Central Mass. Mosquito Control Project

Weekly Report- 10/4/15 10/10/15

EPI Week #40

 

 

Cumulative Surveillance Summary

Target Species

Ae. vex

Cq. per

Cs. mel

Oc. can

Culex

All Species

No. Pools

298

615

187

232

1027

4244

Total Specimens

2527

35543

1237

4823

18055

76060

No. Pools WNV +

0

0

1

0

9

10

No. Pools EEE +

0

0

0

0

1

1

Pool of WNV+ Culex pipiens/restuans complex collected in Clinton on 8/27/15

Pool of WNV+ Culex pipiens/restuans complex collected in Lowell on 9/4/15

Pool of WNV+ Culex pipiens/restuans complex collected in Millbury on 9/9/15

Pool of WNV+ Culex pipiens/restuans complex collected in Millville on 9/10/15

Pool of WNV+ Culex pipiens/restuans complex collected in Millbury on 9/17/15

Pool of WNV+ Culex pipiens/restuans complex collected in Natick on 9/17/15

Pool of WNV+ Culex pipiens/restuans complex collected in Sherborn on 9/17/15

Pool of WNV+ Culex pipiens/restuans complex collected in Northbridge on 9/18/15

Pool of WNV+ Culex pipiens/restuans complex collected in Wilmington on 9/22/15

Pool of EEE+ Culex pipiens/restuans complex collected in Northbridge on 9/25/15

Pool of WNV+ Culiseta melanura collected in Westborough on 9/30/15

 

Weather Summary (Northborough, MA): The weather for EPI Week 40 averaged 55.6F with a recorded high temperature of 70.2F and a recorded low temperature of only 40.5F. There were 0.23 inches of precipitation observed this week. Compared to the previous week, it was approximately 2.8F cooler on average, and rained about 1.95 inches less. There has been 0.53 inches of rain accumulated in October, after 3.72 inches for the month of September.

 

CMMCP Mosquito Summary*-

Target Species Δ From Δ From Predominant Trap Site(s)

Last Week Last Year

Aedes vexans

+00.00%

+00.00%

Lancaster, Westborough

Coquillettidia perturbans

-100.0%

-100.0%

Southborough

Culiseta melanura

-36.84%

-58.62%

Tewksbury, Wilmington

Ochlerotatus canadensis

+00.00%

+00.00%

Southborough

Culex Species

-100.0%

-100.0%

Shrewsbury, Millbury

All Species

-56.67%

-61.76%

Lancaster, Westborough

The predominant mosquito for the week was Ae. vexans followed by Culex

 

*Seasonal numbers may contribute to these comparisons being not as significant as they appear

 

General narrative:

The temperatures for EPI Week 40 dropped approximately 2.8F from the previous week, with only 0.23 inches of precipitation observed. Overall collection numbers experienced a decrease of almost 57% from EPI Week 39 at the historical surveillance trap sites. All target species experienced either a decrease of remained steady from the previous week. Aedes vexans was the most abundant mosquito in the CMMCP service area with Culex spp. second. This week the CMMCP Surveillance Program conducted the final collections for the 2015 mosquito season. The local mosquito populations will continue to decrease, but the threat of mosquito-borne disease will remain until the area experiences a hard frost.

 

1 WNV positive was recorded in Epi week #40 in Cs. melanura in Westboro. The local Board of Health put out public notices and no adulticide interventions were made due to weather conditions (low temps).

 

For the year we received 173% more service requests than average; 15,477 requests compared to the 12 year average of 8,901. 15,561 service calls have been completed despite weather conditions earlier in the season that cancelled or postponed operations. Catch basin treatments have ended in all member communities as a preemptive control for Culex and West Nile Virus final tally for 2015 is 84,902, a 28% increase from 2014. Our tire collection and ditch maintenance programs are now operating full time.

 

Submitted by Frank Cornine, CMMCP Staff Biologist


 

Central Mass. Mosquito Control Project

Weekly Report- 9/27/15 10/3/15

EPI Week #39

 

 

Cumulative Surveillance Summary

Target Species

Ae. vex

Cq. per

Cs. mel

Oc. can

Culex

All Species

No. Pools

283

614

177

231

1017

4124

Total Specimens

2455

35542

1214

4821

18015

75808

No. Pools WNV +

0

0

0

0

9

9

No. Pools EEE +

0

0

0

0

1

1

Pool of WNV+ Culex pipiens/restuans complex collected in Clinton on 8/27/15

Pool of WNV+ Culex pipiens/restuans complex collected in Lowell on 9/4/15

Pool of WNV+ Culex pipiens/restuans complex collected in Millbury on 9/9/15

Pool of WNV+ Culex pipiens/restuans complex collected in Millville on 9/10/15

Pool of WNV+ Culex pipiens/restuans complex collected in Millbury on 9/17/15

Pool of WNV+ Culex pipiens/restuans complex collected in Natick on 9/17/15

Pool of WNV+ Culex pipiens/restuans complex collected in Sherborn on 9/17/15

Pool of WNV+ Culex pipiens/restuans complex collected in Northbridge on 9/18/15

Pool of WNV+ Culex pipiens/restuans complex collected in Wilmington on 9/22/15

Pool of EEE+ Culex pipiens/restuans complex collected in Northbridge on 9/25/15

 

Weather Summary (Northborough, MA): The weather for EPI Week 39 averaged 58.4F with a recorded high temperature of 84.1F and a recorded low temperature of only 36.4F. There were 2.18 inches of precipitation observed this week. Compared to the previous week, it was approximately 0.3F cooler on average, and rained about 2.17 inches more. There was 3.72 inches of rain accumulated in September, after 1.45 inches for the month of August.

 

CMMCP Mosquito Summary*-

Target Species Δ From Δ From Predominant Trap Site(s)

Last Week Last Year

Aedes vexans

+00.00%

+00.00%

Natick, Auburn

Coquillettidia perturbans

-33.33%

+100.0%

Webster

Culiseta melanura

+11.76%

+171.4%

Westborough, Tewksbury

Ochlerotatus canadensis

+00.00%

+00.00%

N/A

Culex Species

+33.33%

+300.0%

Wilmington, Shrewsbury

All Species

+00.00%

+76.47%

Natick, Auburn

The predominant mosquito for the week was Culex followed by Ae. vexans

 

*Seasonal numbers may contribute to these comparisons being not as significant as they appear

 

General narrative:

The temperatures for EPI Week 39 dropped approximately 0.3F from the previous week, with 2.18 inches of precipitation observed. Overall collection numbers remained steady from EPI Week 38 at the historical surveillance trap sites. Of the target species, Culiseta melanura and Culex species experienced slight increases from the previous week, while Coquillettidia perturbans decreased. Culex spp. was the most abundant mosquito in the CMMCP service area with Aedes vexans second. Collection numbers will continue to decrease as we approach the end of the season.

 

1 WNV positive and 1 EEE positive were recorded in Epi week #39, both in Culex spp. The Northbridge EEE isolation resulted in a wide area spray on Oct. 1 after discussion with the BOH. Additional surveillance will continue to determine if additional isolations are recorded, as well as population numbers. The isolation in Wilmington also resulted in some adulticiding in the area WNV was found after consultation with the BOH.

 

For the year we received 173% more service requests than average; 15,477 requests compared to the 12 year average of 8,901. 15,561 service calls have been completed despite weather conditions earlier in the season that cancelled or postponed operations. Catch basin treatments have ended in all member communities as a preemptive control for Culex and West Nile Virus final tally for 2015 is 84,902, a 28% increase from 2014. Our tire collection and ditch maintenance programs are now operating full time.

 

Submitted by Frank Cornine, CMMCP Staff Biologist


 

Central Mass. Mosquito Control Project

Weekly Report- 9/10/15 9/26/15

EPI Week #38

 

 

Cumulative Surveillance Summary

Target Species

Ae. vex

Cq. per

Cs. mel

Oc. can

Culex

All Species

No. Pools

250

603

150

230

315

3831

Total Specimens

2219

35527

11131

4818

17882

77415

No. Pools WNV +

0

0

0

0

8

8

No. Pools EEE +

0

0

0

0

0

0

Pool of WNV+ Culex pipiens/restuans complex collected in Clinton on 8/27/15

Pool of WNV+ Culex pipiens/restuans complex collected in Lowell on 9/4/15

Pool of WNV+ Culex pipiens/restuans complex collected in Millbury on 9/9/15

Pool of WNV+ Culex pipiens/restuans complex collected in Millville on 9/10/15

Pool of WNV+ Culex pipiens/restuans complex collected in Millbury on 9/17/15

Pool of WNV+ Culex pipiens/restuans complex collected in Natick on 9/17/15

Pool of WNV+ Culex pipiens/restuans complex collected in Sherborn on 9/17/15

Pool of WNV+ Culex pipiens/restuans complex collected in Northbridge on 9/18/15

 

Weather Summary (Northborough, MA): The weather for EPI Week 38 averaged 57.3F with a recorded high temperature of 77.2F and a recorded low temperature of only 42.5F. There were 0.01 inches of precipitation observed this week. Compared to the previous week, it was approximately 10.3F cooler on average, and rained about 0.29 inches less. There has been 1.84 inches of rain accumulated in September, after 1.45 inches for the month of August.

 

CMMCP Mosquito Summary*-

Target Species Δ From Δ From Predominant Trap Site(s)

Last Week Last Year

Aedes vexans

+152.00%

+00.00%

Wilmington

Coquillettidia perturbans

+19.00%

+00.0%

Sturbridge

Culiseta melanura

+97.0%

+678.00%

Tewksbury

Ochlerotatus canadensis

+50.00%

+00.00%

Culex Species

-56.00%

-4.0%

Ashland, Natick, Tewksbury

All Species

+172.7%

+20.00%

The predominant mosquito for the week was Ae. vexans followed by Culex

 

*Seasonal numbers may contribute to these comparisons being not as significant as they appear

 

General narrative:

The temperatures for EPI Week 38 dropped approximately 10F from the previous week, with negligible precipitation observed. Overall collection numbers increased by approximately 200% from EPI Week 37 at the historical surveillance trap sites, due in part to the previous weeks rainfall and a late season increase in Cs. melanura and Ae. vexans. Other target species continued to decline. Aedes vexans was the most abundant species in the CMMCP service area with Culex spp. a distant second.

 

4 West Nile Virus positives were recorded in Epi week #38; one each in Millbury, Natick, Northbridge and Sherborn. The isolation in Millbury was at the same site WNV was found in Epi week 37, and the collection was made 12 hours before we performed a vector control operation in the area no additional spraying was necessary, and we will still monitor virus activity in the area. Natick & Sherborn sent out press releases urging personal protection measures, but Northbridge did request a vector control operation. Adulticiding was performed in a half mile radius around the WNV+ trap on Sept. 24. Looking ahead a week or two it is doubtful that adulticiding operations will be feasible the rest of the season.

 

For the year we received 173% more service requests than average; 15,477 requests compared to the 12 year average of 8,901. 15,561 service calls have been completed despite weather conditions earlier in the season that cancelled or postponed operations. Catch basin treatments have ended in all member communities as a preemptive control for Culex and West Nile Virus final tally for 2015 is 84,902, a 28% increase from 2014. Our tire collection and ditch maintenance programs are now operating full time.

 

Submitted by Frank Cornine, CMMCP Staff Biologist


 

Central Mass. Mosquito Control Project

Weekly Report- 9/3/15 9/19/15

EPI Week #37

 

 

Cumulative Surveillance Summary

Target Species

Ae. vex

Cq. per

Cs. mel

Oc. can

Culex

All Species

No. Pools

242

602

148

230

927

3796

Total Specimens

2076

35520

1113

4818

17574

74506

No. Pools WNV +

0

0

0

0

4

4

No. Pools EEE +

0

0

0

0

0

0

Pool of WNV+ Culex pipiens/restuans complex collected in Clinton on 8/27/15

Pool of WNV+ Culex pipiens/restuans complex collected in Lowell on 9/4/15

Pool of WNV+ Culex pipiens/restuans complex collected in Millbury on 9/9/15

Pool of WNV+ Culex pipiens/restuans complex collected in Millville on 9/10/15

 

Weather Summary (Northborough, MA): The weather for EPI Week 37 averaged 67.6F with a recorded high temperature of 87.3F and a recorded low temperature of only 53.2F. There was 0.30 inches of precipitation observed this week. Compared to the previous week, it was approximately 5.1F cooler on average, and rained about 1.2 inches less. There has been 1.83 inches of rain accumulated in September, after 1.45 inches for the month of August.

 

CMMCP Mosquito Summary*-

Target Species Δ From Δ From Predominant Trap Site(s)

Last Week Last Year

Aedes vexans

-93.75%

-00.00%

Westborough, Auburn

Coquillettidia perturbans

-90.24%

-60.00%

Dracut, Milford, Webster

Culiseta melanura

-71.43%

-33.33%

Tewksbury, Millville

Ochlerotatus canadensis

-00.00%

-00.00%

N/A

Culex Species

-77.78%

-78.95%

Boxborough, Natick

All Species

-89.62%

-75.56%

Boxborough, Natick

The predominant mosquito for the week was Culex followed by Ae. Vexans

 

*Seasonal numbers may contribute to these comparisons being not as significant as they appear

 

General narrative:

The temperatures for EPI Week 37 dropped approximately 5F from the previous week, with almost 0.30 inches of precipitation observed. Overall collection numbers decreased by approximately 89.6% from EPI Week 36 at the historical surveillance trap sites. The Coquillettidia perturbans population for this season is nearly extinguished, while Culex spp. population also experienced a significant decrease. All other target species either had a weekly reduction or remained the same. Compared to the 2014 season, the long-term surveillance locations showed a decrease of approximately 75.6%. Culex spp. was the most abundant species in the CMMCP service area with Aedes vexans second.

 

For the year we received 173% more service requests than average; 15,477 requests compared to the 12 year average of 8,901. 15,561 service calls have been completed despite weather conditions earlier in the season that cancelled or postponed operations. Catch basin treatments continue in some member communities as a preemptive control for Culex and West Nile Virus. Our tire collection and ditch maintenance programs have restarted as time and personnel allow.

 

Submitted by Frank Cornine, CMMCP Staff Biologist


 

Central Mass. Mosquito Control Project

Weekly Report- 9/6/15 9/12/15

EPI Week #36

 

 

Cumulative Surveillance Summary

Target Species

Ae. vex

Cq. per

Cs. mel

Oc. can

Culex

All Species

No. Pools

219

592

145

229

855

3610

Total Specimens

1983

35499

1109

4816

16871

73406

No. Pools WNV +

0

0

0

0

1

1

No. Pools EEE +

0

0

0

0

0

0

Pool of WNV+ Culex pipiens/restuans complex collected in Clinton on 8/27/15

 

Weather Summary (Northborough, MA): The weather for EPI Week 36 averaged 72.8F with a recorded high temperature of 94.7F and a recorded low temperature of only 53.3F. There was 1.53 inches of precipitation observed this week. Compared to the previous week, it was approximately 0.03F cooler on average, and rained about 1.5 inches more. There has been 1.53 inches of rain accumulated in September, after 1.45 inches for the month of August.

 

CMMCP Mosquito Summary*-

Target Species Δ From Δ From Predominant Trap Site(s)

Last Week Last Year

Aedes vexans

+1600%

+1600%

Leominster, Berlin

Coquillettidia perturbans

-48.75%

-26.79%

Littleton, Berlin, Webster

Culiseta melanura

+16.67%

-30.00%

Tewksbury, Holliston

Ochlerotatus canadensis

+00.00%

+00.00%

N/A

Culex Species

-63.27%

-50.00%

Wilmington, Chelmsford

All Species

-22.63%

+0.950%

Wilmington, Chelmsford

The predominant mosquito for the week was Culex followed by Coquillettidia perturbans

 

General narrative:

 

The temperatures for EPI Week 36 remained steady from the previous week, with almost 1.5 inches of precipitation observed. Overall collection numbers decreased by approximately 23% from EPI Week 35 at the historical surveillance trap sites. The continued decrease of Coquillettidia perturbans was the primary factor behind this reduction, along with a decrease in the Culex spp. population. Aedes vexans and Culiseta melanura experienced increases, while there were no Ochlerotatus canadensis observed this week. Compared to the 2014 season, the long-term surveillance locations showed a slight increase of less than one percent. Culex spp. was the most abundant species in the CMMCP service area with Cq. perturbans second.

 

For the year we received 173% more service requests than average; 15,477 requests compared to the 12 year average of 8,901. 15,561 service calls have been completed despite weather conditions earlier in the season that cancelled or postponed operations. Catch basin treatments continue in some member communities as a preemptive control for Culex and West Nile Virus. Our tire collection and ditch maintenance programs have restarted as time and personnel allow.

 

Submitted by Frank Cornine, CMMCP Staff Biologist


 

Central Mass. Mosquito Control Project

Weekly Report- 8/30/15-9/5/15

EPI Week #35

 

 

Cumulative Surveillance Summary

Target Species

Ae. vex

Cq. per

Cs. mel

Oc. can

Culex

All Species

No. Pools

204

574

141

227

823

3429

Total Specimens

1863

35353

1101

4814

16285

72072

No. Pools WNV +

0

0

0

0

1

1

No. Pools EEE +

0

0

0

0

0

0

Pool of WNV+ Culex pipiens/restuans complex collected in Clinton on 8/27/15

 

Weather Summary (Northborough, MA): The weather for EPI Week 35 averaged 72.8F with a recorded high temperature of 90.7F and a recorded low temperature of only 48.7F. There was 0.0 inches of precipitation observed this week. Compared to the previous week, it was approximately 2.9F warmer on average, and rained about 0.1 inches less. There has been 0.0 inches of rain accumulated in September, after 1.45 inches for the month of August.

 

CMMCP Mosquito Summary*-

Target Species Δ From Δ From Predominant Trap Site(s)

Last Week Last Year

Aedes vexans

+00.00%

+00.00%

Westborough, Boylston

Coquillettidia perturbans

-89.83%

-89.29%

Webster, Sturbridge

Culiseta melanura

+20.00%

+20.00%

Tewksbury, Wilmington

Ochlerotatus canadensis

+00.00%

-100.0%

N/A

Culex Species

+121.4%

+287.5%

Chelmsford, Sturbridge

All Species

-22.11%

-16.85%

Westborough, Sturbridge

The predominant mosquito for the week was Culex followed by Coquillettidia perturbans

 

General narrative:

 

The temperatures for EPI Week 35 averaged approximately 3F warmer than the previous week, with zero precipitation observed. Overall collection numbers decreased by approximately 22% from EPI Week 34 at the historical surveillance trap sites. A significant decrease in Coquillettidia perturbans was the primary factor behind this reduction. Culiseta melanura and Culex spp. experienced increases, while Aedes vexans and Ochlerotatus canadensis decreased or remained steady. Compared to the 2014 season, the long-term surveillance locations showed an overall decrease of approximately 17%. Culex spp. was the most abundant species in the CMMCP service area with Cq. perturbans second.

 

For the year we received 173% more service requests than average; 15,477 requests compared to the 12 year average of 8,901. 15,561 service calls have been completed despite weather conditions earlier in the season that cancelled or postponed operations. Catch basin treatments are underway in all member communities as a preemptive control for Culex and West Nile Virus. Our tire collection and ditch maintenance programs have restarted as time and personnel allow. West Nile Virus was detected in a pool of Culex mosquitoes in Hudson in the downtown area. Nearly 12 (11.7) linear miles were sprayed Sept. 3 after coordination with the Hudson Board of Health to lower populations of mosquitoes and related risk from disease transmission in the area. Supplemental trapping was performed in the area and catch basins treatments were treated/retreated to lower populations of Culex. Schools, recreational and other public areas in town will be scheduled for adulticiding as soon as possible.

 

Submitted by Frank Cornine, CMMCP Staff Biologist


 

Central Mass. Mosquito Control Project

Weekly Report- 8/23/15-8/29/15

EPI Week #34

 

 

Cumulative Surveillance Summary

Target Species

Ae. vex

Cq. per

Cs. mel

Oc. can

Culex

All Species

No. Pools

172

537

136

224

730

3115

Total Specimens

1502

34918

1091

4777

14968

69205

No. Pools WNV +

0

0

0

0

0

0

No. Pools EEE +

0

0

0

0

0

0

 

Weather Summary (Northborough, MA): The weather for EPI Week 34 averaged 69.9F with a recorded high temperature of 86.8F and a recorded low temperature of only 54.5F. There was 0.10 inches of precipitation observed this week. Compared to the previous week, it was approximately 5.92F cooler on average, and rained about 1.18 inches less. There has been 1.45 inches of rain accumulated in August, after 0.17 inches for the month of July.

 

CMMCP Mosquito Summary*-

Target Species Δ From Δ From Predominant Trap Site(s)

Last Week Last Year

Aedes vexans

-100.0%

-100.0%

N/A

Coquillettidia perturbans

-43.27%

-11.94%

Sturbridge, Ashland

Culiseta melanura

-37.50%

-58.33%

Westford, Tewksbury, Auburn

Ochlerotatus canadensis

+00.00%

-100.0%

N/A

Culex Species

-36.36%

-24.32%

Westford, Clinton

All Species

-43.45%

-31.16%

Westford, Sturbridge

The predominant mosquito for the week was Culex followed by Coquillettidia perturbans

 

General narrative:

 

The temperatures for EPI Week 34 averaged approximately 6F cooler than the previous week, with only 0.10 inches of precipitation. Overall collection numbers decreased by approximately 43% from EPI Week 33 at the historical surveillance trap sites. Once again, a significant decrease in Coquillettidia perturbans was the primary factor behind this reduction. The other target species, Aedes vexans, Culiseta melanura, Culex spp., Ochlerotatus canadensis, also experienced reductions. Compared to the 2014 season, the long-term surveillance locations showed an overall decrease of approximately 31%. Culex spp. has surpassed Cq. perturbans as the most abundant species in the CMMCP service area. Populations will likely continue to decrease as we approach the end of the season.

 

For the year we have received 173% more service requests than average; 15,477 requests to date compared to the 12 year average of 8,901. Requests were 14.2% more than the 2014 totals for the same time frame, 13,544 in 2014 against 15,477 in 2015. Service requests decreased 6.7% from EPI week 33 to Epi week 34 for 2015 (366 v. 219). 458 service calls were completed this week with no weather events impacting operations. To date 15,561 service calls have been completed despite weather conditions earlier in the season that cancelled or postponed operations. Catch basin treatments are underway in all member communities as a preemptive control for Culex and West Nile Virus. Our tire collection and ditch maintenance programs have restarted as time and personnel allow. This is the last week of the residential adulticide program. One human case of West Nile Virus was identified in Middlesex county but after further investigation by MDPH is was determined that exposure most likely occurred in New Jersey. As a precaution we have set out extra traps in the area and catch basins treatments were performed to lower populations of Culex.

 

Submitted by Frank Cornine, CMMCP Staff Biologist


 

Central Mass. Mosquito Control Project

Weekly Report- 8/16/15-8/22/15

EPI Week #33

 

 

Cumulative Surveillance Summary

Target Species

Ae. vex

Cq. per

Cs. mel

Oc. can

Culex

All Species

No. Pools

148

503

130

218

668

2847

Total Specimens

1167

34256

1074

4766

13248

65844

No. Pools WNV +

0

0

0

0

0

0

No. Pools EEE +

0

0

0

0

0

0

 

Weather Summary (Northborough, MA): The weather for EPI Week 33 averaged 75.8F with a recorded high temperature of 91.8F and a recorded low temperature of only 64.2F. There was 1.28 inches of precipitation observed this week. Compared to the previous week, it was approximately 5.18F warmer on average, and rained about 1.22 inches more. There has been 1.35 inches of rain accumulated in August, after 0.17 inches for the month of July.

 

CMMCP Mosquito Summary*-

Target Species Δ From Δ From Predominant Trap Site(s)

Last Week Last Year

Aedes vexans

+500.0%

+400.0%

Westford, Gardner, Natick

Coquillettidia perturbans

-56.30%

-47.47%

Billerica, Lowell, Stow

Culiseta melanura

+33.33%

+00.00%

Gardner, Lancaster

Ochlerotatus canadensis

-100.0%

-100.0%

N/A

Culex Species

+10.00%

-42.86%

Westford, Hudson

All Species

-43.81%

-45.98%

Westford, Billerica, Lowell

The predominant mosquito for the week was Coquillettidia perturbans followed by Culex

 

General narrative:

 

The temperatures for EPI Week 33 averaged approximately 5F warmer than the previous week, with one large precipitation event (>1). Overall collection numbers decreased by approximately 44% from EPI Week 32 at the historical surveillance trap sites. A significant decrease in Coquillettidia perturbans, was the primary factor behind this reduction. Increases were observed in several populations including Culiseta melanura, Culex spp., and Aedes vexans. Compared to the 2014 season, the long-term surveillance locations showed an overall decrease of almost 46%. As with the weekly comparison, this was primarily due to a reduction in the number of Cq. perturbans specimens collected. Cq. perturbans remained the most abundant species in the CMMCP service area with Culex spp. second. The large precipitation event may contribute to a late season rise in flood water species but biting pressure may be offset by cooler temperatures forecasted in the upcoming weeks.

 

For the year we have received 178% more service requests than average; 15,258 requests to date compared to the 12 year average of 8,554. Requests were 14.9% more than the 2014 totals for the same time frame, 13,270 in 2014 against 15,258 in 2015. Service requests decreased 9% from EPI week 32 to Epi week 33 for 2015 (399 v. 366). 374 service calls were completed this week with minimal weather events impacting operations. To date 15,203 service calls have been completed despite weather conditions earlier in the season that cancelled or postponed operations. Catch basin treatments are underway in all member communities as a preemptive control for Culex and West Nile Virus. Our tire collection program has restarted as time and personnel permit.

 

Submitted by Frank Cornine, CMMCP Staff Biologist


 

Central Mass. Mosquito Control Project

Weekly Report- 8/9/15-8/15/15

EPI Week #32

 

 

Cumulative Surveillance Summary

Target Species

Ae. vex

Cq. per

Cs. mel

Oc. can

Culex

All Species

No. Pools

135

450

120

214

621

2657

Total Specimens

910

31971

1021

4742

12161

61492

No. Pools WNV +

0

0

0

0

0

0

No. Pools EEE +

0

0

0

0

0

0

 

Weather Summary (Northborough, MA): The weather for EPI Week 32 averaged 70.6F with a recorded high temperature of 90.0F and a recorded low temperature of only 55.3F. There was only 0.06 inches of precipitation observed this week. Compared to the previous week, it was approximately 0.61F cooler on average, and rained about 0.05 inches more. There has been 0.07 inches of rain accumulated in August, after 0.17 inches for the month of July.

 

CMMCP Mosquito Summary*-

Target Species Δ From Δ From Predominant Trap Site(s)

Last Week Last Year

Aedes vexans

+100.0%

+100.0%

Natick, Northbridge

Coquillettidia perturbans

+19.00%

+9.170%

Wilmington, Lowell

Culiseta melanura

-84.21%

-60.00%

Millville, Southborough

Ochlerotatus canadensis

+100.0%

+100.0%

Auburn, Boylston, Lowell

Culex Species

-27.27%

-6.980%

Littleton, Southborough

All Species

+2.050%

+4.910%

Wilmington, Lowell

The predominant mosquito for the week was Coquillettidia perturbans followed by Culex

 

General narrative:

 

The temperatures for EPI Week 32 averaged approximately 1F cooler than the previous week, with scattered precipitation events. Overall collection numbers increased by 2% from EPI Week 31 at the historical surveillance trap sites. Increases in Coquillettidia perturbans, Aedes vexans, and Ochlerotatus canadensis collections offset decreases in the Culiseta melanura and Culex spp. populations. Compared to the 2014 season, the long-term surveillance locations showed an overall increase of almost 5%. As with the weekly comparison, this was primarily due to additional Cq. perturbans, Ae. vexans, and Oc. canadensis specimens being collected. Cq. perturbans remained the most abundant species in the CMMCP service area with Culex spp. second. The surveillance program will continue to monitor for arbovirus as we approach the latter portion of the season, which traditionally is an elevated period for mosquito-borne disease.

 

For the year we have received 181% more service requests than average; 14,892 requests to date compared to the 12 year average of 8,199. Requests were 15.06% more than the 2014 totals for the same time frame, 12,942 in 2014 against 14,892 in 2015. Service requests decreased 11.02% from EPI week 31 to Epi week 32 for 2015 (443 v. 399). 530 service calls were completed this week with minimal weather events impacting operations. To date 14,829 service calls have been completed despite weather conditions earlier in the season that cancelled or postponed operations. Catch basin treatments are underway in all member communities as a preemptive control for Culex and West Nile Virus.

 

Submitted by Frank Cornine, CMMCP Staff Biologist


 

Central Mass. Mosquito Control Project

Weekly Report- 8/2/15 - 8/8/15

EPI Week #31

 

 

Cumulative Surveillance Summary

Target Species

Ae. vex

Cq. per

Cs. mel

Oc. can

Culex

All Species

No. Pools

120

408

107

204

560

2421

Total Specimens

836

29803

980

4680

10952

57478

No. Pools WNV +

0

0

0

0

0

0

No. Pools EEE +

0

0

0

0

0

0

 

Weather Summary (Northborough, MA): The weather for EPI Week 31 averaged 71.2F with a recorded high temperature of 88.5F and a recorded low temperature of only 53.7F. There was only 0.01 inches of precipitation observed this week. Compared to the previous week, it was approximately 3.6F cooler on average, and rained about 0.07 inches less. There has been 0.01 inches of rain accumulated in August, after 0.17 inches for the month of July.

 

CMMCP Mosquito Summary*-

Target Species Δ From Δ From Predominant Trap Site(s)

Last Week Last Year

Aedes vexans

-100.0%

-100.0%

N/A

Coquillettidia perturbans

-60.86%

-64.97%

Berlin, Lowell, Devens

Culiseta melanura

+40.74%

+11.76%

Wilmington, Tewksbury

Ochlerotatus canadensis

-100.0%

-100.0%

Boylston

Culex Species

-19.12%

-21.43%

Boxborough, Hopkinton

All Species

-54.15%

-58.50%

Sherborn, Devens

The predominant mosquito for the week was Coquillettidia perturbans followed by Culex

 

General narrative:

 

The temperatures for EPI Week 31 averaged approximately 4F cooler than the previous week, with only 0.01 inches of precipitation. Overall collection numbers decreased by 54% from EPI Week 30 at the historical surveillance trap sites. This decrease was largely due to a drop in Coquillettidia perturbans specimens. The only target species to experience an increase from the previous week was Culiseta melanura. Compared to the 2014 season, the long-term surveillance locations showed an overall decrease of almost 59%. As with the weekly comparison, this was primarily due to a significant reduction in Cq. perturbans. Despite this reduction, Cq. perturbans remained the most abundant species in the CMMCP service area with Culex spp. second.

 

For the year we have received 185% more service requests than average; 14,493 requests to date compared to the 12 year average of 7,838. Requests were 16.8% more than the 2014 totals for the same time frame, 12,399 in 2014 against 14,493 in 2015. Service requests decreased 39.5% from EPI week 30 to Epi week 31 for 2015 (618 v. 443). 482 service calls were completed this week with minimal weather events impacting operations. To date 14,299 service calls have been completed despite weather conditions earlier in the season that cancelled or postponed operations. Catch basin treatments are underway in all member communities as a preemptive control for Culex and West Nile Virus.

 

Submitted by Frank Cornine, CMMCP Staff Biologist


 

Central Mass. Mosquito Control Project

Weekly Report- 7/26/15 - 8/1/15

EPI Week #30

 

 

Cumulative Surveillance Summary

Target Species

Ae. vex

Cq. per

Cs. mel

Oc. can

Culex

All Species

No. Pools

111

356

100

198

497

2196

Total Specimens

804

27946

880

4649

9829

53981

No. Pools WNV +

0

0

0

0

0

0

No. Pools EEE +

0

0

0

0

0

0

 

Weather Summary (Northborough, MA): The weather for EPI Week 30 averaged 74.8F with a recorded high temperature of 92.9F and a recorded low temperature of only 61.5F. There was only 0.08 inches of precipitation observed this week. Compared to the previous week, it was approximately 2.0F warmer on average, and rained about 0.04 inches more. There has been 0.17 inches of rain accumulated in July, after 5.17 inches for the month of June.

 

CMMCP Mosquito Summary*-

Target Species Δ From Δ From Predominant Trap Site(s)

Last Week Last Year

Aedes vexans

-100.0%

+00.00%

Millbury

Coquillettidia perturbans

+87.18%

+99.45%

Billerica, Webster

Culiseta melanura

-57.14%

-25.00%

Tewksbury, Billerica

Ochlerotatus canadensis

-66.67%

-33.33%

Billerica

Culex Species

+106.7%

-13.89%

Hopedale, Wilmington

All Species

+58.33%

+77.12%

Billerica, Webster, Wilmington

The predominant mosquito for the week was Coquillettidia perturbans followed by Culex

 

General narrative:

 

The temperatures for EPI Week 30 averaged approximately 2F warmer than the previous week, with only 0.08 inches of precipitation. July was an extremely dry month, finishing with only 0.17 inches observed at the CMMCP weather station. Overall collection numbers increased by 58% from EPI Week 29 at the historical surveillance trap sites. An increase in Coquillettidia perturbans collections was primarily responsible for this overall rise in surveillance specimens. The only other target species to experience an increase from the previous week was Culex spp. Compared to the 2014 season, the long-term surveillance locations showed an overall increase of almost 77%. As with the weekly comparison, this was primarily due to additional Cq. perturbans specimens being collected. Cq. perturbans remained the most abundant species in the CMMCP service area with Culex spp. second.

 

For the year we have received 191% more service requests than average; 14,050 requests to date compared to the 12 year average of 7,356. Requests were 18.4% more than the 2014 totals for the same time frame, 11,866 in 2014 against 14,050 in 2015. Service requests increased 10.1% from EPI week 29 to Epi week 30 for 2015 (561 v. 618). 816 service calls were completed this week with minimal weather events impacting operations. To date 13,817 service calls have been completed despite weather conditions earlier in the season that cancelled or postponed operations. Catch basin treatments are underway in all member communities as a preemptive control for Culex and West Nile Virus.

 

Submitted by Frank Cornine, CMMCP Staff Biologist


 

Central Mass. Mosquito Control Project

Weekly Report- 7/19/15 - 7/25/15

EPI Week #29

 

 

Cumulative Surveillance Summary

Target Species

Ae. vex

Cq. per

Cs. mel

Oc. can

Culex

All Species

No. Pools

102

303

91

192

441

1975

Total Specimens

788

25151

835

4594

8934

49747

No. Pools WNV +

0

0

0

0

0

0

No. Pools EEE +

0

0

0

0

0

0

 

Weather Summary (Northborough, MA): The weather for EPI Week 29 averaged 72.8F with a recorded high temperature of 90.0F and a recorded low temperature of only 55.3F. There was only 0.04 inches of precipitation observed this week. Compared to the previous week, it was approximately 0.85F warmer on average, and rained about 0.04 inches more. There has been 0.09 inches of rain accumulated in July, after 5.17 inches for the month of June.

 

CMMCP Mosquito Summary*-

Target Species Δ From Δ From Predominant Trap Site(s)

Last Week Last Year

Aedes vexans

+00.00%

+200.0%

Gardner, Hudson

Coquillettidia perturbans

-45.07%

-81.09%

Milford, Acton

Culiseta melanura

+40.00%

-41.67%

Gardner

Ochlerotatus canadensis

-14.29%

-90.16%

Hudson, Gardner

Culex Species

-40.00%

-46.43%

Gardner

All Species

-36.08%

-77.06%

Gardner, Milford

The predominant mosquito for the week was Coquillettidia perturbans followed by Culex

 

General narrative:

 

The temperatures for EPI Week 29 averaged approximately 1F warmer than the previous week, with only 0.04 inches of precipitation. July has been extremely dry with only 0.09 inches observed at the CMMCP weather station. Overall collection numbers decreased by 36% from EPI Week 28 at historical surveillance trap sites. This decrease was likely due to a significant drop in the Coquillettidia perturbans population. Despite this reduction, Cq. perturbans remained the most abundant species in the CMMCP service area. The only target species to experience an increase from the previous week was Culiseta melanura, by approximately 40%. Compared to the 2014 season, the long-term surveillance locations showed an overall decrease of almost 77. As with the weekly comparison, this reduction was primarily due to a significant drop in the Cq. perturbans population.

 

For the year we have received 194% more service requests than average; 13,432 requests to date compared to the 12 year average of 6,902. Requests were 20% more than the 2014 totals for the same time frame, 11,160 in 2014 against 13,432 in 2015. Service requests decreased 35% from EPI week 26 to Epi week 27 for 2015 (755 v.561). 1,008 service calls were completed this week with no weather events impacting operations. To date 13,001 service calls have been completed despite weather conditions earlier in the season that cancelled or postponed operations. Catch basin treatments are underway in all member communities as a preemptive control for Culex and West Nile Virus.

 

Submitted by Frank Cornine, CMMCP Staff Biologist


 

Central Mass. Mosquito Control Project

Weekly Report- 7/12/15 - 7/18/15

EPI Week #28

 

 

Cumulative Surveillance Summary

Target Species

Ae. vex

Cq. per

Cs. mel

Oc. can

Culex

All Species

No. Pools

86

246

84

180

375

1687

Total Specimens

713

20959

808

4533

7633

43338

No. Pools WNV +

0

0

0

0

0

0

No. Pools EEE +

0

0

0

0

0

0

 

Weather Summary (Northborough, MA): The weather for EPI Week 28 averaged 71.9F with a recorded high temperature of 89.2F and a recorded low temperature of only 52.1F. There was zero precipitation observed this week. Compared to the previous week, it was approximately 0.74F warmer on average, and rained about 0.02 inches less. There has been 0.05 inches of rain accumulated in July, after 5.17 inches for the month of June.

 

CMMCP Mosquito Summary*-

Target Species Δ From Δ From Predominant Trap Site(s)

Last Week Last Year

Aedes vexans

+2300%

+2400%

Auburn, Tewksbury

Coquillettidia perturbans

+174.9%

+9.890%

Wilmington, Tewksbury

Culiseta melanura

-58.33%

+500.0%

Millbury, Wilmington

Ochlerotatus canadensis

-36.36%

+6.670%

Auburn, Billerica

Culex Species

+1.85%

-49.07%

Holliston, Auburn

All Species

+143.7%

+11.34%

Wilmington, Tewksbury, Auburn

The predominant mosquito for the week was Coquillettidia perturbans followed by Culex

 

General narrative:

 

The temperatures for EPI Week 28 averaged approximately 1 degree warmer than the previous week, with only no observed precipitation. At historical surveillance trap sites, the overall collection numbers increased by 144% over EPI week 27. This large increase was primarily due to a significant rise in the Coquillettidia perturbans population. EPI Week 28 also experienced elevated levels of Aedes vexans, which may be a result of the significant June rain events. This floodwater species is still considered low in the CMMCP service area, despite the relative spike in population. Compared to the 2014 season, the long-term surveillance locations showed an overall increase of approximately 11%. Cq. perturbans was once again the most abundant species in the CMMCP service area, with Culex spp. the second most abundant mosquito. Cq. perturbans will likely remain the predominant species for EPI week 29.

 

For the year we have received 203% more service requests than average; 12,871 requests to date compared to the 12 year average of 6,332. Requests were 22% more than the 2014 totals for the same time frame, 10,511 in 2014 against 12,871 in 2015. Service requests decreased 23% from EPI week 27 to Epi week 28 for 2015 (930 v.755). 1,375 service calls were completed this week with only one weather event in Natick impacting operations. To date 11,993 service calls have been completed despite weather conditions earlier in the season that cancelled or postponed operations. Catch basin treatments have restarted as a preemptive control for Culex and West Nile Virus.

 

Submitted by Frank Cornine, CMMCP Staff Biologist


 

Central Mass. Mosquito Control Project

Weekly Report- 7/5/15 - 7/11/15

EPI Week #27

 

 

Cumulative Surveillance Summary

Target Species

Ae. vex

Cq. per

Cs. mel

Oc. can

Culex

All Species

No. Pools

74

207

78

168

325

1498

Total Specimens

622

17715

773

4370

6359

38170

No. Pools WNV +

0

0

0

0

0

0

No. Pools EEE +

0

0

0

0

0

0

 

Weather Summary (Northborough, MA): The weather for this EPI week 27 averaged 72.7F with a recorded high temperature of 87.9F and a recorded low temperature of only 54.9F. For this week there was also a total of 0.02 inches of rain observed. Compared to the previous week, it was approximately 6.91F warmer on average, and rained about 0.29 inches less. There has been 0.05 inches of rain accumulated in July, after 5.17 inches for the month of June.

 

CMMCP Mosquito Summary*-

Target Species Δ From Δ From Predominant Trap Site(s)

Last Week Last Year

Aedes vexans

-83.33%

+100.0%

Lunenburg, Lowell

Coquillettidia perturbans

+8.300%

-54.80%

Lunenburg, Lowell

Culiseta melanura

+140.0%

-36.84%

Tewksbury, Wilmington

Ochlerotatus canadensis

-31.25%

+46.67%

Lunenburg, Marlborough

Culex Species

+217.7%

+31.71%

Fitchburg, Auburn, Clinton

All Species

+11.33%

-44.72%

Lunenburg, Lowell

The predominant mosquito for the week was Coquillettidia perturbans followed by Culex

 

General narrative:

 

The temperatures for EPI week 27 averaged approximately 7 degrees warmer than the previous week, with only 0.05 inches of precipitation observed. At historical surveillance trap sites, the overall collection numbers increased by 11.33% over EPI week 26, with only Aedes vexans and Ochlerotatus canadensis experiencing decreases. Despite this weekly increase, the long-term surveillance locations showed an overall decrease compared to the 2014 season. This reduction was due in large part to a decrease in Coquillettidia perturbans and Culiseta melanura. Despite the decline, Cq. perturbans was once again the most abundant species in the CMMCP service area, with Culex spp. the second most abundant mosquito. Cq. perturbans will likely remain the predominant species for EPI week 28.

 

For the year we have received 212% more service requests than average; 12,116 requests to date compared to the 12 year average of 5,674. Requests were 27% more than the 2014 totals for the same time frame, 9,544 in 2014 against 12,116 in 2015. Service requests increased 37% from EPI week 26 to Epi week 27 for 2015 (678 v. 930) most likely due to 1.82 inches of rain received in Epi week 25. 1,275 service calls were completed this holiday shortened week with weather events impacting operations on July 9. Additional crews were dispatched on overtime on July 10 to respond to residents requests for service. To date 10,618 service calls have been completed despite weather conditions earlier in the season that cancelled or postponed operations. Catch basin treatments will begin next week as a preemptive control for Culex and West Nile Virus.

 

Submitted by Frank Cornine, CMMCP Staff Biologist


 

Central Mass. Mosquito Control Project

Weekly Report- 6/28/15 - 7/4/15

EPI Week #26

 

 

Cumulative Surveillance Summary

Target Species

Ae. vex

Cq. per

Cs. mel

Oc. can

Culex

All Species

No. Pools

57

158

69

153

245

1217

Total Specimens

442

9009

741

4231

4043

26155

No. Pools WNV +

0

0

0

0

0

0

No. Pools EEE +

0

0

0

0

0

0

 

Weather Summary (Northborough, MA): The weather for this EPI week 26 averaged 65.8F with a recorded high temperature of 83.6F and a recorded low temperature of only 51.3F. For this week there was also a total of 0.31 inches of rain observed. Compared to the previous week, it was approximately 4.8F cooler on average, and rained about 1.51 inches less. There was 5.17 inches of rain accumulated in June, after 1.97 inches for the month of May.

 

CMMCP Mosquito Summary*-

Target Species Δ From Δ From Predominant Trap Site(s)

Last Week Last Year

Aedes vexans

-25.00%

+600.0%

Marlborough, Acton

Coquillettidia perturbans

-4.680%

-11.07%

Stow, Littleton

Culiseta melanura

-80.00%

-50.00%

Gardner, Millville

Ochlerotatus canadensis

-59.49%

+6.670%

Marlborough, Hopedale

Culex Species

-41.38%

+54.55%

Hopedale, Holliston

All Species

-24.75%

-6.940%

Stow, Littleton

The predominant mosquito for the week was Coquillettidia perturbans followed by Culex

 

General narrative:

 

The temperatures for EPI week 26 averaged approximately 5 degrees cooler than the previous week, with only 0.31 inches of precipitation observed. At historical surveillance trap sites, the overall collection numbers were almost 25% lower than EPI week 25, with all target species experiencing decreases. These long-term surveillance locations also showed an overall decrease compared to the 2014 season, although of the target species, Aedes vexans, Ochlerotatus canadensis, and Culex spp. were present in higher numbers. Coquillettidia perturbans and Culiseta melanura were all lower compared to this collection period of the previous season. Despite the decrease, Cq. perturbans was again the most abundant species in the CMMCP service area, with Culex spp. the second most abundant mosquito. Cq. perturbans will likely remain the predominant species for EPI week 27. Warmer temperatures should increase collections numbers and contribute to the emergence of flood water and container mosquitoes.

 

For the year we have received 222% more service requests than average; 11,186 requests to date compared to the 12 year average of 5,032. Requests were 31% more than the 2014 totals for the same time frame, 8,567 in 2014 against 11,186 in 2015. Service requests decreased 65% from EPI week 25 to Epi week 26 for 2015 (1,122 vs. 678). 1,933 service calls were completed this week with no weather events impacting operations. Additional crews were dispatched on overtime on June 26 to respond to residents requests for service. To date 9,343 service calls have been completed despite weather conditions earlier in the season that cancelled or postponed operations.

 

Submitted by Frank Cornine, CMMCP Staff Biologist


 

Central Mass. Mosquito Control Project

Weekly Report- 6/21/15 - 6/27/15

EPI Week #25

 

 

Cumulative Surveillance Summary

Target Species

Ae. vex

Cq. per

Cs. mel

Oc. can

Culex

All Species

No. Pools

35

110

55

124

189

911

Total Specimens

287

4647

617

3729

2661

18564

No. Pools WNV +

0

0

0

0

0

0

No. Pools EEE +

0

0

0

0

0

0

 

Weather Summary (Northborough, MA): The weather for this particular week averaged 70.6F with a recorded high temperature of 87.2F and a recorded low temperature of only 52.1F. For this week there was also a total of 1.82 inches of rain observed. Compared to the previous week, it was approximately 5.1F warmer on average, and rained about 0.94 inches more. There has been 4.89 inches of rain accumulated in June, after 1.97 inches for the month of May.

 

CMMCP Mosquito Summary*-

Target Species Δ From Δ From Predominant Trap Site(s)

Last Week Last Year

Aedes vexans

+700.0%

+800.0%

Billerica, Southborough

Coquillettidia perturbans

+243.2%

+479.17%

Lancaster, Billerica

Culiseta melanura

-77.48%

+400.0%

Tewksbury

Ochlerotatus canadensis

-30.09%

+79.55%

Billerica, Webster

Culex Species

-19.44%

+262.5%

Hudson, Billerica

All Species

+25.92%

+206.37%

Billerica, Lancaster

The predominant mosquito for the week was Coquillettidia perturbans followed by Culex

 

General narrative:

 

The temperatures for EPI week 25 averaged approximately 5 degrees warmer than the previous week, with 1.82 inches of precipitation observed. Overall collection numbers were higher than EPI week 24, although only Coquillettidia perturbans and Aedes vexans exhibited increases of the target species. Culiseta melanura, Ochlerotatus canadensis and Culex spp. all experienced decreases from the prior collection period. Cq. perturbans was the most abundant species in the CMMCP service area for EPI week 25, with Culex spp. becoming the second most abundant mosquito. Cq. perturbans will likely remain a predominant species for the next several weeks. Overall collections numbers should continue to increase with further emergence of this species. The continued significant rain events will contribute to future flood water and container mosquitoes.

 

For the year we have received 244% more service requests than average; 10,508 requests to date compared to the 12 year average of 4,308. Requests were 42% more than the 2014 totals for the same time frame, 7,403 in 2014 against 10,508 in 2015. Service requests decreased 9% from EPI week 24 to Epi week 25 for 2015 (1,231 vs. 1,122). 2,203 service calls were completed this week despite scattered thunderstorms impacting operations on June 23. Additional crews were dispatched on overtime on June 26 to respond to residents requests for service. To date 7,410 service calls have been completed despite weather conditions that continue to cancel or postpone operations.

 

Submitted by Frank Cornine, CMMCP Staff Biologist


 

Central Mass. Mosquito Control Project

Weekly Report- 6/14/15 - 6/20/15

EPI Week #24

 

 

Cumulative Surveillance Summary

Target Species

Ae. vex

Cq. per

Cs. mel

Oc. can

Culex

All Species

No. Pools

19

67

45

108

129

701

Total Specimens

122

2033

578

3258

1262

13494

No. Pools WNV +

0

0

0

0

0

0

No. Pools EEE +

0

0

0

0

0

0

 

Weather Summary (Northborough, MA): The weather for this particular week averaged 65.7F with a recorded high temperature of 83.6F and a recorded low temperature of only 51.1F. For this week there was also a total of 0.88 inches of rain observed. Compared to the previous week, it was approximately 3.76F cooler on average, and rained about 0.27 inches more. There has been 3.07 inches of rain accumulated in June, after 1.97 inches for the month of May.

 

CMMCP Mosquito Summary*-

Target Species Δ From Δ From Predominant Trap Site(s)

Last Week Last Year

Aedes vexans

+100.0%

+100.0%

Northbridge, Southborough

Coquillettidia perturbans

+1057%

+523.1%

Westborough, Devens

Culiseta melanura

+2120%

+177.5%

Tewksbury, Wilmington

Ochlerotatus canadensis

+88.33%

+101.8%

Northbridge, Webster

Culex Species

+414.3%

+125.0%

Hudson, Marlborough

All Species

+151.3%

+126.0%

Westborough, Northbridge

The predominant mosquito for the week was Coquillettidia perturbans followed by Ochlerotatus canadensis

 

General narrative:

 

The temperatures for EPI week 24 averaged approximately 4 degrees cooler than the previous week, with 0.88 inches of precipitation observed. Overall collection numbers were higher than EPI week 23, with all target species displaying increases from the prior collection period. Coquillettidia perturbans has overtaken Ochlerotatus canadensis as the most abundant species in the CMMCP service area, with Oc. canadensis now becoming the second most abundant species. Cq. perturbans will likely remain a predominant species for the next several weeks. Overall collections numbers should continue to increase with further emergence of this species. Additional rain events could contribute to more flood water and container mosquitoes as well.

 

For the year we have received 267% more service requests than average; 9,386 requests to date compared to the 12 year average of 3,514. Requests were 156% more than the 2014 totals for the same time frame, 6,016 in 2014 against 9,386 in 2015. Service requests decreased 14% from EPI week 23 to Epi week 24 for 2015 (1,421 v 1,231). 1,781 service calls were completed this week despite rain impacting operations on June 15. Additional crews were dispatched on overtime on June 19 to respond to residents requests for service. To date 5,180 service calls have been answered despite weather conditions that continue to cancel or postpone operations.

 

Submitted by Frank Cornine, CMMCP Staff Biologist


 

Central Mass. Mosquito Control Project

Weekly Report- 6/7/15 - 6/13/15

EPI Week #23

 

 

Cumulative Surveillance Summary

Target Species

Ae. vex

Cq. per

Cs. mel

Oc. can

Culex

All Species

No. Pools

10

15

24

49

59

407

Total Specimens

46

244

313

1172

176

6751

No. Pools WNV +

0

0

0

0

0

0

No. Pools EEE +

0

0

0

0

0

0

 

Weather Summary (Northborough, MA): The weather for this particular week averaged 69.4F with a recorded high temperature of 87.1F and a recorded low temperature of only 42.6F. For this week there was also a total of 0.61 inches of rain observed. Compared to the previous week, it was approximately 12.63F warmer on average, and rained about 2.70 inches less. There has been 2.19 inches of rain accumulated in June, after 1.97 inches for the month of May.

 

CMMCP Mosquito Summary*-

Target Species Δ From Δ From Predominant Trap Site(s)

Last Week Last Year

Aedes vexans

+00.00%

+00.00%

Boxborough

Coquillettidia perturbans

+700.0%

+250.0%

Chelmsford, Milford

Culiseta melanura

-94.79%

-68.75%

Acton, Boylston

Ochlerotatus canadensis

+5900%

+36.36%

Webster, Chelmsford

Culex Species

-61.11%

+16.67%

Webster

All Species

-27.27%

-33.33%

Chelmsford, Acton

The predominant mosquito for the week was Ochlerotatus canadensis followed by Coquillettidia perturbans.

 

*Low early season numbers may contribute to these comparisons being not as significant as they appear

 

General Narrative

 

The temperatures for EPI week 23 averaged approximately 13 degrees warmer than the previous week, with 0.61 inches of precipitation observed. Overall collection numbers were higher than EPI week 22, although the opposite was true for the long-term historical trap sites. Ochlerotatus canadensis was the most abundant species, followed now by Coquillettidia perturbans, which continues to experience weekly increases. Culiseta melanura and Culex spp. experienced decreases following a surge the week prior. Overall collections numbers should continue to increase with further emergence of Cq. perturbans in the CMMCP service area. Flood water species may also begin to be observed a result of the large rain events at the end of May.

 

For the year we have received 301% more service requests than average; 8,155 requests to date compared to the 12 year average of 2,704. Requests were 190% more than the 2014 totals for the same time frame, 4,271 in 2014 against 8,155 in 2015. Service requests decreased 151% from EPI week 22 to Epi week 23 for 2015 (2,156 vs. 1,421). 2,056 service calls were completed this week despite thunderstorms impacting operations on June 9. Additional crews were dispatched on overtime on June 12 to respond to residents requests for service. To date 3,399 service calls have been answered despite weather conditions that continue to cancel or postpone operations. Residents have been alerted through our phone system and social media channels that response may be delayed, but most comments received have been positive and understanding.

 

Submitted by Frank Cornine, CMMCP Staff Biologist


 

Central Mass. Mosquito Control Project

Weekly Report- 5/31/15-6/6/15

EPI Week #22

 

 

Cumulative Surveillance Summary

Target Species

Ae. vex

Cq. per

Cs. mel

Oc. can

Culex

All Species

No. Pools

9

4

17

39

31

260

Total Specimens

44

5

300

1067

106

5236

No. Pools WNV +

0

0

0

0

0

0

No. Pools EEE +

0

0

0

0

0

0

 

Weather Summary (Northborough, MA): The weather for this particular week averaged 56.8F with a recorded high temperature of 78.4F and a recorded low temperature of only 45.6F. For this week there was also a total of 3.31 inches of rain observed. Compared to the previous week, it was approximately 14.26F cooler on average, and rained about 3.31 inches more. There has been 1.58 inches of rain accumulated in June, after 1.97 inches for the month of May.

 

CMMCP Mosquito Summary*-

Target Species Δ From Δ From Predominant Trap Site(s)

Last Week Last Year

Aedes vexans

+00.00%

+00.00%

Westborough, Shrewsbury, Westford

Coquillettidia perturbans

-100.00%

+00.00%

N/A

Culiseta melanura

+54.84%

+269.2%

Tewksbury, Wilmington

Ochlerotatus canadensis

-97.37%

-90.00%

Stow, Hopedale, Millbury

Culex Species

+1800.0%

+260.0%

Webster, Tewksbury, Millbury

All Species

-33.44%

+190.3%

Westford, Stow, Millbury

The predominant mosquito for the week was Ochlerotatus abserratus followed by Ochlerotatus excrucians

 

*Low early season numbers may contribute to these comparisons being not as significant as they appear

 

General narrative: The temperatures for EPI week 22 averaged 14 degrees cooler than the previous week, and 3.31 inches of precipitation was observed. Overall collection numbers were lower than EPI week 21, with Ochlerotatus abserratus remaining the most abundant species, followed now by Oc. excrucians. These two species accounted for over half of all mosquitoes collected and are likely responsible for the volume of adulticide requests. Culiseta melanura and Culex spp. experienced increases which is important to note as they are important vectors of Eastern Equine Encephalitis and West Nile virus respectively. More seasonable temperatures should increase collections numbers. The heavy rains observed this week may cause an additional emergence of flood water species over the next couple of weeks.

 

The catch basin program for Culex control continued, with an additional 9,083 basins treated; this brings the total to 26,241 basins treated as part of our early season WNV control program. Rain events in early Epi week 22 delayed responses to service requests for spraying. 2,136 service requests were received in Epi week 22, a 212% reduction from Epi week 21 (4,578 v 2,156). This is a 201% increase from the 12 year average of 1,066, and a 114% increase from the same Epi week in 2014 (1,887). Despite the rain and cool temperatures we were able to service 1,343 requests with some creative scheduling and 8 crews working overtime Friday June 5. No tires were collected in our source reduction program, this program is on a brief hiatus while we concentrate in our areas of service, but we continue to database any information received from residents.

 

Submitted by Frank Cornine, CMMCP Field Biologist


 

Central Mass. Mosquito Control Project

Weekly Report- 5/24/15-5/30/15

EPI Week #21

 

 

Cumulative Surveillance Summary

Target Species

Ae. vex

Cq. per

Cs. mel

Oc. can

Culex

All Species

No. Pools

5

4

7

22

13

101

Total Specimens

40

5

155

902

49

3512

No. Pools WNV +

0

0

0

0

0

0

No. Pools EEE +

0

0

0

0

0

0

 

Weather Summary (Northborough, MA): The weather for this particular week averaged 71.1F with a recorded high temperature of 86.1F and a recorded low temperature of only 45.6F. For this week there was also a total of 0.00 inches of rain observed. Compared to the previous week, it was approximately 11.57F warmer on average, and rained about 0.2 inches less. There has been only 0.24 inches of rain accumulated in May.

 

CMMCP Mosquito Summary-

Target Species Predominant Trap Site(s)

Aedes vexans

Sturbridge, Billerica, Millville

Coquillettidia perturbans

Holliston, Webster, Tewksbury

Culiseta melanura

Billerica, Tewksbury, Holliston

Ochlerotatus canadensis

Millville, Blackstone, Billerica

Culex Species

Sturbridge, Natick, Boxborough

All Species

Millville, Billerica, Sturbridge

The predominant mosquito for the week was Ochlerotatus abserratus followed by Ochlerotatus canadensis.

 

General narrative:

 

The temperatures for EPI week 21 averaged over 10 degrees higher than the previous week, which allowed for increased mosquito activity in the evening hours. Continued emergence of early season mosquito species was reflected in the surveillance trap collections, with large numbers of Ochlerotatus abserratus and Oc. canadensis. These two species accounted for over three quarters of all mosquitoes collected. There was no precipitation this week, continuing the dry conditions of May. There were a few individual Coquillettidia perturbans specimens collected, although this species is not predicted to have a significant emergence for a couple weeks. Currently Oc. abserratus is the predominant species in the CMMCP service area, with Oc. canadensis second. Continued increases in temperature coupled with additional emergence will cause surveillance collection numbers to rise in the upcoming weeks. Significant rains are expected in EPI week 22.

Service calls were accepted starting May 26. A record number of residents requested service during Epi week 21; 4,578. This represents nearly 30% of the total number of service requests received in 2014 (15,737). 84% (3,854) of the total number were collected through our online system. 17,158 catch basins were treated in May as part of our preemptive WNV prevention program.

 

Submitted by Frank Cornine, CMMCP Staff Biologist