Central Mass. Mosquito Control Project

Weekly Report- 10/5/14-10/11/14

EPI Week #41

 

 

Cumulative Surveillance Summary

Target Species

Ae. vex

Cq. per

Cs. mel

Oc. can

Culex

All Species

No. Pools

43

199

66

42

720

1450

Total Specimens

437

7717

354

352

12238

23263

No. Pools WNV +

0

0

0

0

1

1

No. Pools EEE +

0

0

0

0

1

1

Pool of WNV+ Culex Species collected in Clinton on 7/3/13

Pool of EEE+ Culex Species collected in Tewksbury on 9/23/13

 

Weather Summary (Northborough, MA): The weather for this particular week averaged 53.44F with a recorded high temperature of 73.2F and a recorded low temperature of only 36.8F. For this week there was also a total of 0.25 inches of rain observed. Compared to the previous week, it was approximately 4.97F cooler on average, and rained about 1.37 inches less. October has experienced 1.79 inches of rain, while the total rainfall for the month of September was 1.16 inches.

 

Service Request Summary (FINAL): For 2014 we received 57% more requests than the 11 year average; 13,778 requests compared to the average of 8,761. Requests were 13.49% more than the 2013 totals, 12,140 in 2013 against 13,778 in 2014. Standard response to service request has ended, we will continue to monitor for arboviruses and respond as needed.

 

CMMCP Mosquito Summary*-

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

Last Week Last Year

Aedes vexans

+00.00%

+00.00%

N/A

Coquillettidia perturbans

-100.0%

-100.0%

N/A

Culiseta melanura

-62.07%

+120.0%

Holliston, Tewksbury

Ochlerotatus canadensis

+00.00%

+00.00%

N/A

Culex Species

-100.0%

+00.00%

(Tewksbury, Natick)**

All Species

-58.82%

+40.00%

Tewksbury, Marlborough

The predominant mosquito for the week was Ochlerotatus japonicus, followed by Culex.

 

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

 

**Supplemental surveillance traps

 

General narrative: Temperatures continued to decrease through EPI week 41, which also experienced .25 inches of rain. The overall collection numbers at the historical trap sites were less than half of the previous week, including zero specimens of target species Aedes vexans, Coquillettidia perturbans, Ochlerotatus canadensis and Culex. Conversely, when compared to the corresponding 2013 period, overall collections numbers were higher and also individually for Culiseta melanura. At the historical CDC trap locations, Cs. melanura was the principal mosquito species, followed by Cs. morsitans. EPI week 41 was the final week of the 2014 CMMCP surveillance program. Sparse mosquito activity will continue until hard frosts further reduce the remaining population.

 

Submitted by Frank Cornine, CMMCP Field Biologist


 

Central Mass. Mosquito Control Project

Weekly Report- 9/28/14-10/4/14

EPI Week #40

 

 

Cumulative Surveillance Summary

Target Species

Ae. vex

Cq. per

Cs. mel

Oc. can

Culex

All Species

No. Pools

40

198

61

41

717

1427

Total Specimens

420

7713

343

348

12217

23158

No. Pools WNV +

0

0

0

0

1

1

No. Pools EEE +

0

0

0

0

1

1

Pool of WNV+ Culex Species collected in Clinton on 7/3/13

Pool of EEE+ Culex Species collected in Tewksbury on 9/23/13

 

Weather Summary (Northborough, MA): The weather for this particular week averaged 58.41F with a recorded high temperature of 84.4F and a recorded low temperature of only 43.8F. For this week there was also a total of 1.62 inches of rain observed. Compared to the previous week, it was approximately 1.20F cooler on average, and rained about 1.11 inches more. September finished with 1.16 inches of rain, while the total rainfall for the month of August was 3.70 inches.

 

Service Request Summary (FINAL): For 2014 we received 57% more requests than the 11 year average; 13,778 requests compared to the average of 8,761. Requests were 13.49% more than the 2013 totals, 12,140 in 2013 against 13,778 in 2014. Standard response to service request has ended, we will continue to monitor for arboviruses and respond as needed.

 

CMMCP Mosquito Summary*-

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

Last Week Last Year

Aedes vexans

+00.00%

+00.00%

N/A

Coquillettidia perturbans

+100.0%

-50.00%

Tewksbury

Culiseta melanura

+314.3%

+52.63%

Tewksbury

Ochlerotatus canadensis

+00.00%

+00.00%

N/A

Culex Species

-50.00%

-50.00%

Tewksbury

All Species

+100.0%

+36.00%

Tewksbury

The predominant mosquito for the week was Culex, followed by Ochlerotatus japonicus.

 

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

 

General narrative: There was a slight decrease in temperature for EPI week 40, with over 1.5 inches of precipitation. Compared to the previous week, temperatures were approximately a degree cooler, and over an inch more of rain. The overall collection numbers at the historical trap sites were higher compared to the previous week, which was largely due to an increase in the Culiseta melanura target species. Compared to the corresponding 2013 period, overall collections numbers were higher. Again this was also the case for Cs. melanura. At the historical CDC trap locations, Cs. melanura was the principal mosquito species, followed by Culex. During EPI week 41, there is the potential for scattered frost in the CMMCP service area. This would further reduce much of the remaining mosquito population for 2014.

 

Submitted by Frank Cornine, CMMCP Field Biologist


 

Central Mass. Mosquito Control Project

Weekly Report- 9/21/14-9/27/14

EPI Week #39

 

 

Cumulative Surveillance Summary

Target Species

Ae. vex

Cq. per

Cs. mel

Oc. can

Culex

All Species

No. Pools

38

197

56

41

714

1413

Total Specimens

410

7712

287

348

12196

23067

No. Pools WNV +

0

0

0

0

1

1

No. Pools EEE +

0

0

0

0

1

1

Pool of WNV+ Culex Species collected in Clinton on 7/3/13

Pool of EEE+ Culex Species collected in Tewksbury on 9/23/13

 

Weather Summary (Northborough, MA): The weather for this particular week averaged 59.61F with a recorded high temperature of 83.2F and a recorded low temperature of only 39.8F. For this week there was also a total of 0.51 inches of rain observed. Compared to the previous week, it was approximately 5.01F warmer on average, and rained about 0.48 inches more. September has experienced 1.08 inches of rain, while the total rainfall for the month of August was 3.70 inches.

 

Service Request Summary (FINAL): For 2014 we received 57% more requests than the 11 year average; 13,778 requests compared to the average of 8,761. Requests were 13.49% more than the 2013 totals, 12,140 in 2013 against 13,778 in 2014. Standard response to service request has ended, we will continue to monitor for arboviruses and respond as needed.

 

CMMCP Mosquito Summary*-

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

Last Week Last Year

Aedes vexans

+00.00%

-100.0%

N/A

Coquillettidia perturbans

-100.0%

+00.00%

N/A

Culiseta melanura

-30.00%

-22.22%

Tewksbury

Ochlerotatus canadensis

+00.00%

+00.00%

N/A

Culex Species

+00.00%

+200.0%

Holliston, Tewksbury, Lowell

All Species

-32.00%

+21.43%

Devens, Tewksbury

The predominant mosquito for the week was Culex, followed by Ochlerotatus japonicus.

 

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

 

General narrative: Temperatures rose several degrees in EPI week 39, with approximately one half inch of rain. The overall collection numbers at the historical trap sites were lower compared to the previous week. This was also the case for all target species. However, when compared to the corresponding 2013 period, overall collections numbers were actually higher. An increase was also shown for Culex of the target mosquitoes. Despite this increase when compared to the previous year, Culiseta melanura was actually lower for the 2014 collection period. At the historical CDC trap locations, Culex was the principal mosquito, followed by Ochlerotatus japonicus. Temperatures are predicted to remain cool for EPI week 40, and collection numbers should continue to decline as we approach the end of the season.

 

Submitted by Frank Cornine, CMMCP Field Biologist


 

Central Mass. Mosquito Control Project

Weekly Report- 9/14/14-9/20/14

EPI Week #38

 

 

Cumulative Surveillance Summary

Target Species

Ae. vex

Cq. per

Cs. mel

Oc. can

Culex

All Species

No. Pools

33

196

53

41

704

1385

Total Specimens

359

7707

264

348

12146

22893

No. Pools WNV +

0

0

0

0

1

1

No. Pools EEE +

0

0

0

0

0

0

Pool of WNV+ Culex Species collected in Clinton on 7/3/13

 

Weather Summary (Northborough, MA): The weather for this particular week averaged 54.60F with a recorded high temperature of 73.8F and a recorded low temperature of only 35.3F. For this week there was also a total of 0.03 inches of rain observed. Compared to the previous week, it was approximately 8.14F cooler on average, and rained about 0.25 inches less. September has experienced 0.57 inches of rain, while the total rainfall for the month of August was 3.70 inches.

 

Service Request Summary (FINAL): For 2014 we received 57% more requests than the 11 year average; 13,778 requests compared to the average of 8,761. Requests were 13.49% more than the 2013 totals, 12,140 in 2013 against 13,778 in 2014. Standard response to service request has ended, we will continue to monitor for arboviruses and respond as needed.

 

CMMCP Mosquito Summary*-

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

Last Week Last Year

Aedes vexans

+00.00%

+00.00%

N/A

Coquillettidia perturbans

-90.00%

-50.00%

Webster

Culiseta melanura

+233.3%

+900.0%

Tewksbury, Webster

Ochlerotatus canadensis

+00.00%

+00.00%

N/A

Culex Species

-89.47%

-66.67%

Berlin, Hopedale

All Species

-44.44%

+92.31%

Berlin, Hopedale

The predominant mosquito for the week was Culex, followed by Ochlerotatus japonicus.

 

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

 

General narrative: Temperatures continued to drop in EPI week 38, with no significant precipitation. Compared to the previous week, temperatures were approximately 8 degrees cooler, which predictably lowered mosquito collection numbers. The overall collection numbers at the historical trap sites were lower compared to the previous week. This was also the case for all target species aside from Culiseta melanura. Compared to the corresponding 2013 period, overall collections numbers were actually higher, and also for Culiseta melanura of the target species. At the historical CDC trap locations, Culiseta melanura was the principal mosquito species, but when all trap types are taken into consideration Culex becomes the predominant mosquito, followed by Ochlerotatus japonicus. Temperatures are predicted to remain cool for EPI week 39, which may cause all collection numbers to further decline. Catch basins treatments have ended, with a new high total: 66,467 basins were treated in the CMMCP service area in 2014.

 

Submitted by Frank Cornine, CMMCP Field Biologist


 

Central Mass. Mosquito Control Project

Weekly Report- 9/7/14-9/13/14

EPI Week #37

 

 

Cumulative Surveillance Summary

Target Species

Ae. vex

Cq. per

Cs. mel

Oc. can

Culex

All Species

No. Pools

30

193

51

41

687

1342

Total Specimens

343

7687

254

348

11947

22545

No. Pools WNV +

0

0

0

0

1

1

No. Pools EEE +

0

0

0

0

0

0

Pool of WNV+ Culex Species collected in Clinton on 7/3/13

 

Weather Summary (Northborough, MA): The weather for this particular week averaged 62.74F with a recorded high temperature of 77.8F and a recorded low temperature of only 47.8F. For this week there was also a total of 0.28 inches of rain observed. Compared to the previous week, it was approximately 12.39F cooler on average, and rained about 1.03 inches less. September has experienced 0.54 inches of rain, while the total rainfall for the month of August was 3.70 inches.

 

Service Request Summary (FINAL): For 2014 we received 57% more requests than the 11 year average; 13,778 requests compared to the average of 8,761. Requests were 13.49% more than the 2013 totals, 12,140 in 2013 against 13,778 in 2014. Standard response to service request has ended, we will continue to monitor for arboviruses and respond as needed.

 

CMMCP Mosquito Summary*-

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

Last Week Last Year

Aedes vexans

+00.00%

-100.0%

N/A

Coquillettidia perturbans

-82.14%

-67.74%

Webster, Holliston

Culiseta melanura

-70.00%

-76.92%

Tewksbury

Ochlerotatus canadensis

+00.00%

+00.00%

N/A

Culex Species

-47.22%

-24.00%

Milford, Tewksbury

All Species

-57.14%

-57.14%

Webster, Milford, Tewksbury

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

 

General narrative: After a spike in average temperature and collection numbers, EPI week 37 was more seasonable which was reflected in the mosquito surveillance. This week was approximately 12 degrees cooler, with around a quarter inch of precipitation. The overall collection numbers at the historical trap sites were lower compared to previous week as well as the corresponding 2013 period. All target species were present in lower or equal levels for both comparisons. At the historical CDC trap locations, Culex was the principal mosquito followed by Coquillettidia perturbans, and this was also true when all trap types are taken into consideration. Cq. perturbans should continue their decline through the end of the season. Temperatures are predicted to remain cool for EPI week 38, which may cause all collection numbers to further decline.

 

Submitted by Frank Cornine, CMMCP Field Biologist


 

Central Mass. Mosquito Control Project

Weekly Report- 8/31/14-9/6/14

EPI Week #36

 

 

Cumulative Surveillance Summary

Target Species

Ae. vex

Cq. per

Cs. mel

Oc. can

Culex

All Species

No. Pools

16

178

50

40

665

1279

Total Specimens

216

7534

251

343

11772

22053

No. Pools WNV +

0

0

0

0

1

1

No. Pools EEE +

0

0

0

0

0

0

Pool of WNV+ Culex Species collected in Clinton on 7/3/13

 

Weather Summary (Northborough, MA): The weather for this particular week averaged 75.13F with a recorded high temperature of 89.5F and a recorded low temperature of only 56.6F. For this week there was also a total of 1.31 inches of rain observed. Compared to the previous week, it was approximately 5.44F warmer on average, and rained about 0.76 inches more. August finished with 3.70 inches of rain, while the total rainfall for the month of July was 3.26 inches.

 

Service Request Summary (FINAL): For 2014 we received 57% more requests than the 11 year average; 13,778 requests compared to the average of 8,761. Requests were 13.49% more than the 2013 totals, 12,140 in 2013 against 13,778 in 2014. Standard response to service request has ended, we will continue to monitor for arboviruses and respond as needed.

 

CMMCP Mosquito Summary*-

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

Last Week Last Year

Aedes vexans

+00.00%

-100.0%

N/A

Coquillettidia perturbans

+00.00%

-17.65%

Webster, Tewksbury

Culiseta melanura

+100.0%

-44.44%

Tewksbury

Ochlerotatus canadensis

-100.0%

+00.00%

N/A

Culex Species

+125.0%

-14.29%

Tewksbury, Dracut

All Species

+17.98%

-44.74%

Tewksbury, Webster

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

 

General narrative: Temperatures experienced another increase this past week, and there was also approximately 1.31 inches of rain. The elevated temperatures may have contributed to an increase in the overall collection numbers at historical trap sites, as anticipated. This increase was primarily due to additional Culex mosquitoes. Despite the overall increase compared to EPI week 35, all of our target species were present in lower or equal levels when compared to the corresponding 2013 collection period. At the historical CDC trap locations, Coquillettidia perturbans was again the principal species followed by Culex, but when all trap types are taken into consideration, these two switch predominance. Cq. perturbans are expected to continue their decline through the end of the season. Additionally, seasonable temperatures are predicted for EPI week 37, which may cause all collection numbers to decline.

 

Submitted by Frank Cornine, CMMCP Field Biologist


 

Central Mass. Mosquito Control Project

Weekly Report- 8/24/14-8/30/14

EPI Week #35

 

 

Cumulative Surveillance Summary

Target Species

Ae. vex

Cq. per

Cs. mel

Oc. can

Culex

All Species

No. Pools

16

174

47

40

638

1235

Total Specimens

216

7478

241

343

11500

21650

No. Pools WNV +

0

0

0

0

1

1

No. Pools EEE +

0

0

0

0

0

0

Pool of WNV+ Culex Species collected in Clinton on 7/3/13

 

Weather Summary (Northborough, MA): The weather for this particular week averaged 69.69F with a recorded high temperature of 89.4F and a recorded low temperature of only 51.4F. For this week there was also a total of 0.55 inches of rain observed. Compared to the previous week, it was approximately 4.05F warmer on average, and rained about 0.35 inches more. There has been 2.65 inches of rain accumulated in August, while the total rainfall for the month of July was 3.26 inches.

 

Service Request Summary: For the year we received 57% more requests than average; 13,778 requests to date compared to the 11 year average of 8,761. Requests were 13.49% more than the 2013 totals for the same time frame, 12,140 in 2013 against 13,778 in 2014. Service requests decreased 17% from EPI week 34 to Epi week 35 for 2014 (274 vs. 234).

 

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

-16.42%

-71.57%

Webster, Tewksbury

Culiseta melanura

-58.33%

-86.11%

Holliston, Webster

Ochlerotatus canadensis

+00.00%

+00.00%

Webster

Culex Species

-56.76%

-44.83%

Shrewsbury, Hopedale

All Species

-35.51%

-68.99%

Webster, Tewksbury

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

 

General narrative: Temperatures rose this past week after several weeks of cooling. EPI week 35 also experienced approximately 0.55 inches of rain. The overall collection numbers continued to decrease at historical trap sites, again primarily due to lower observations of Coquillettidia perturbans and Culex mosquitoes. All of our target species were present in lower or equal levels compared to EPI week 34 and also when compared to the corresponding 2013 collection period. At the historical CDC trap locations, Cq. perturbans was again the principal species followed by Culex, but when all trap types are taken into consideration, these two switch predominance. Although Aedes vexans were not collected at the historical trap sites this week, we may begin to observe them and similar species resulting from the significant rain event of EPI week 33. Cq. perturbans are expected to continue their decline through the end of the season. Warm temperatures are predicted to remain for EPI week 36, which may cause a rebound in collection numbers.

 

Submitted by Frank Cornine, CMMCP Field Biologist


 

Central Mass. Mosquito Control Project

Weekly Report- 8/17/14-8/23/14

EPI Week #34

 

 

Cumulative Surveillance Summary

Target Species

Ae. vex

Cq. per

Cs. mel

Oc. can

Culex

All Species

No. Pools

10

145

43

39

614

1152

Total Specimens

112

6815

227

342

11196

20472

No. Pools WNV +

0

0

0

0

1

1

No. Pools EEE +

0

0

0

0

0

0

Pool of WNV+ Culex Species collected in Clinton on 7/3/13

 

Weather Summary (Northborough, MA): The weather for this particular week averaged 65.64F with a recorded high temperature of 83.8F and a recorded low temperature of only 48.9F. For this week there was also a total of 0.20 inches of rain observed. Compared to the previous week, it was approximately 1.99F cooler on average, and rained about 1.56 inches less. There has been 2.10 inches of rain accumulated in August, while the total rainfall for the month of July was 3.26 inches.

 

Service Request Summary: For the year we have received 60% more requests than average; 13,544 requests to date compared to the 11 year average of 8,479. Requests were 15.3% more than the 2013 totals for the same time frame, 11,739 in 2013 against 13,544 in 2014. Service requests decreased 20% from EPI week 33 to Epi week 34 for 2014 (328 vs. 274).

 

CMMCP Mosquito Summary*-

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

Last Week Last Year

Aedes vexans

+100.0%

-75.00%

Webster

Coquillettidia perturbans

-9.17%

+32.00%

Webster, Leominster

Culiseta melanura

-46.67%

-82.61%

Tewksbury

Ochlerotatus canadensis

+300.0%

-62.50%

Webster

Culex Species

+79.07%

+8.45%

Westford

All Species

+9.12%

-9.33%

Westford, Webster

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

 

General narrative: The cooling trend continued this week with EPI week 34 being several degrees lower than the previous week, while experiencing only 0.20 inches of rain. This accumulated rainfall was significantly lower than EPI week 33, which had approximately 1.76 inches. Unlike the previous week, the overall collection numbers decreased at historical trap sites, primarily due to lower observations of Coquillettidia perturbans and Culex mosquitoes. There were multiple Aedes vexans collected at these sites during EPI week 34, which may be a result of the heavy rains experienced the prior surveillance period. All of our target species were present in lower or equal levels compared to the corresponding 2013 collection period. At the historical CDC trap locations, Cq. perturbans was again the principal species followed by Culex, but when all trap types are taken into consideration, these two switch predominance. Ae. vexans and similar species may continue to emerge following the significant rain event of the previous week, while Cq. perturbans are expected to continue their decline. Supplemental CO2 baited CDC traps are continuing to be deployed throughout the CMMCP service area.

 

Submitted by Frank Cornine, CMMCP Field Biologist


 

Central Mass. Mosquito Control Project

Weekly Report- 8/10/14-8/16/14

EPI Week #33

 

 

Cumulative Surveillance Summary

Target Species

Ae. vex

Cq. per

Cs. mel

Oc. can

Culex

All Species

No. Pools

5

120

40

38

584

1071

Total Specimens

41

6212

215

341

10733

19230

No. Pools WNV +

0

0

0

0

1

1

No. Pools EEE +

0

0

0

0

0

0

Pool of WNV+ Culex Species collected in Clinton on 7/3/13

 

Weather Summary (Northborough, MA): The weather for this particular week averaged 67.63F with a recorded high temperature of 86.2F and a recorded low temperature of only 55.0F. For this week there was also a total of 1.76 inches of rain observed. Compared to the previous week, it was approximately 3.61F cooler on average, and rained about 1.72 inches more. There has been 1.90 inches of rain accumulated in August, while the total rainfall for the month of July was 3.26 inches.

 

Service Request Summary: For the year we have received 63% more requests than average; 13,270 requests to date compared to the 11 year average of 8,125. Requests were 19.2% more than the 2013 totals for the same time frame, 11,125 in 2013 against 13,270 in 2014. Service requests decreased 65% from EPI week 32 to Epi week 33 for 2014 (543 vs. 328).

 

CMMCP Mosquito Summary*-

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

Last Week Last Year

Aedes vexans

+100.0%

-75.00%

Webster

Coquillettidia perturbans

-9.17%

+32.00%

Webster, Leominster

Culiseta melanura

-46.67%

-82.61%

Tewksbury

Ochlerotatus canadensis

+300.0%

-62.50%

Webster

Culex Species

+79.07%

+8.45%

Westford

All Species

+9.12%

-9.33%

Westford, Webster

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

 

General narrative: EPI week 33 was several degrees cooler than the previous week and also experienced a large rain event of approximately 1.70 inches. That rainfall accounts for most of the monthly total to date. Despite the cooler temperatures, the overall collection numbers increased at historical trap sites, primarily due to additional Culex mosquitoes. Slight decreases in Coquillettidia perturbans and Culiseta melanura were not enough to offset the increase in Culex. Another single specimen of Aedes vexans was collected at these sites during EPI week 33. Of our target species, Cq. perturbans and Culex are the only ones present in higher levels compared to the corresponding 2013 collection period. At the historical CDC trap locations, Cq. perturbans was again the principal species followed by Culex, but when all trap types are taken into consideration, these two switch predominance. The large rain event during EPI week 33 may contribute to an increase of select mosquito species over the next couple of weeks. To assist in the detection of mosquito-borne disease, additional CDC traps are continuing to be utilized in all CMMCP communities.

 

Submitted by Frank Cornine, CMMCP Field Biologist


 

Central Mass. Mosquito Control Project

Weekly Report- 8/3/14-8/9/14

EPI Week #32

 

 

Cumulative Surveillance Summary

Target Species

Ae. vex

Cq. per

Cs. mel

Oc. can

Culex

All Species

No. Pools

3

94

34

36

539

972

Total Specimens

12

5341

186

321

9802

17228

No. Pools WNV +

0

0

0

0

1

1

No. Pools EEE +

0

0

0

0

0

0

Pool of WNV+ Culex Species collected in Clinton on 7/3/13

 

Weather Summary (Northborough, MA): The weather for this particular week averaged 71.24F with a recorded high temperature of 89.7F and a recorded low temperature of only 55.3F. For this week there was also a total of 0.04 inches of rain observed. Compared to the previous week, it was approximately 1.61F warmer on average, and rained about 1.19 inches less. There has been 0.14 inches of rain accumulated in August, while the total rainfall for the month of July was 3.26 inches.

 

Service Request Summary: For the year we have received 60% more requests than average; 12,942 requests to date compared to the 11 year average of 7,768. Requests were 17.5% more than the 2013 totals for the same time frame, 10,689 in 2013 against 12,942 in 2014. Service requests increased slightly from EPI week 31 to Epi week 32 for 2014 (533 vs. 543).

 

CMMCP Mosquito Summary*-

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

Last Week Last Year

Aedes vexans

-100.0%

+00.00%

N/A

Coquillettidia perturbans

-61.82%

+194.6%

Webster, Tewksbury

Culiseta melanura

-55.88%

+50.00%

Tewksbury

Ochlerotatus canadensis

-100.0%

-100.0%

N/A

Culex Species

-38.57%

-35.82%

Hopedale, Stow, Auburn

All Species

-59.63%

+24.45%

Webster, Hopedale

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

 

General narrative: There was a slight increase in temperature during EPI week 32, and very little rainfall, especially compared to the previous week. This week was approximately two degrees warmer on average with only 0.04 inches of rain observed. All target species, Aedes vexans, Coquillettidia perturbans, Culiseta melanura, Culex, and Ochlerotatus canadensis experienced decreases at the historical trap sites during this period. After observing the season’s first Ae. vexans specimen last week, collections once again returned zero at these particular sites. Of our target species, only Culex and Oc. canadensis are present in lower levels than during the 2013 EPI week 32. At the historical CDC trap locations, Cq. perturbans was again the principal species followed by Culex, but when all trap types are taken into consideration, these two switch predominance. Additional CDC traps have started to be utilized in all CMMCP communities in the continued search for eastern equine encephalitis and West Nile virus.

 

Submitted by Frank Cornine, CMMCP Field Biologist


 

Central Mass. Mosquito Control Project

Weekly Report- 7/27/14-8/2/14

EPI Week #31

 

 

Cumulative Surveillance Summary

Target Species

Ae. vex

Cq. per

Cs. mel

Oc. can

Culex

All Species

No. Pools

2

58

32

34

506

883

Total Specimens

2

3915

171

308

9082

14953

No. Pools WNV +

0

0

0

0

1

1

No. Pools EEE +

0

0

0

0

0

0

Pool of WNV+ Culex Species collected in Clinton on 7/3/13

 

Weather Summary (Northborough, MA): The weather for this particular week averaged 69.63F with a recorded high temperature of 84.3F and a recorded low temperature of only 54.7F. For this week there was also a total of 1.23 inches of rain observed. Compared to the previous week, it was approximately 2.8F cooler on average, and rained about 1.16 inches more. There has been 3.26 inches of rain accumulated in July, while the total rainfall for the month of June was 1.46 inches.

 

Service Request Summary: For the year we have received 67% more requests than average; 12,399 requests to date compared to the 11 year average of 7,424. Requests were 22% more than the 2013 totals for the same time frame, 10,164 in 2013 against 12,399 in 2014. Service requests dropped (32%) from EPI week 30 to Epi week 31 for 2014 (706 vs. 533).

 

 

CMMCP Mosquito Summary*-

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

Last Week Last Year

Aedes vexans

+100.0%

-50.00%

Webster

Coquillettidia perturbans

+88.45%

+118.8%

Webster, Leominster

Culiseta melanura

+385.7%

+126.7%

Tewksbury

Ochlerotatus canadensis

+60.00%

-61.90%

Webster

Culex Species

+52.17%

+141.4%

Sherborn, Milford

All Species

+85.30%

+88.77%

Webster, Leominster

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

 

General narrative:

 

There was a decrease in temperature during EPI week 31, as well as a significant increase in rainfall. This week was approximately three degrees cooler on average with almost an inch and a quarter of rain observed. All target species, Aedes vexans, Coquillettidia perturbans, Culiseta melanura, Culex, and Ochlerotatus canadensis, experienced increases at the historical trap sites during this period. The single Ae. vexans specimen collected this week was the season’s first at these particular sites. The additional Cq. perturbans collected this week caused the overall collection numbers at the historical sites to significantly increase. Of our target species, only Ae.vexans and Oc. canadensis are present in lower levels than during the 2013 EPI week 31. At the historical CDC trap locations, Cq. perturbans was again the principal species followed by Culex, but when all trap types are taken into consideration, these two switch predominance. The significant rains this week may lead to more floodwater species, such as Ae.vexans, over the next couple of weeks.

Submitted by Frank Cornine, CMMCP Field Biologist


 

Central Mass. Mosquito Control Project

Weekly Report- 7/20/14-7/26/14

EPI Week #30

 

 

Cumulative Surveillance Summary

Target Species

Ae. vex

Cq. per

Cs. mel

Oc. can

Culex

All Species

No. Pools

1

50

27

33

440

784

Total Specimens

1

3344

137

300

7809

12953

No. Pools WNV +

0

0

0

0

1

1

No. Pools EEE +

0

0

0

0

0

0

Pool of WNV+ Culex Species collected in Clinton on 7/3/13

 

Weather Summary (Northborough, MA): The weather for this particular week averaged 72.43F with a recorded high temperature of 91.7F and a recorded low temperature of only 54.9F. For this week there was also a total of 0.07 inches of rain observed. Compared to the previous week, it was approximately 0.11F cooler on average, and rained about 0.40 inches less. There has been 2.13 inches of rain accumulated in July, while the total rainfall for the month of June was 1.46 inches.

 

Service Request Summary: For the year we have received 71% more requests than average; 11,866 requests to date compared to the 11 year average of 6,946. Requests were 26% more than the 2013 totals for the same time frame, 9,432 in 2013 against 11,866 in 2014. Service requests rose slightly (9%) from EPI week 29 to Epi week 30 for 2014 (649 vs. 706).

 

 

CMMCP Mosquito Summary*-

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

Last Week Last Year

Aedes vexans

+00.00%

-100.0%

N/A

Coquillettidia perturbans

+67.41%

+64.21%

Webster, Tewksbury

Culiseta melanura

+1100%

+20.00%

Holliston

Ochlerotatus canadensis

+313.3%

+121.4%

Webster

Culex Species

-62.04%

-38.81%

Shrewsbury

All Species

+52.61%

+45.20%

Webster, Shrewsbury

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

 

General narrative:

The temperature this week remained stable, with very little accumulated rainfall. Following the largest week for Coquillettidia perturbans, there was a significant drop in this mosquito species. Ochlerotatus canadensis and Culiseta melanura also experienced decreases this week, while Culex mosquitoes had a significant increase at the CDC historical trap sites. Once again Aedes vexans was absent from these historic trap sites and still has yet to be collected at these locations in 2014. The decrease in overall historical site collection numbers was largely due to the significant drop in Cq. perturbans specimens this week. At the historical CDC trap locations, all target species were present in lower levels this week than during the 2013 EPI week 30, and once again Cq. perturbans was the principal species followed by Culex. However, when all trap types are taken into consideration, these two switch predominance for the CMMCP service area.

Submitted by Frank Cornine, CMMCP Field Biologist


 

Central Mass. Mosquito Control Project

Weekly Report- 7/13/14-7/19/14

EPI Week #29

 

 

Cumulative Surveillance Summary

Target Species

Ae. vex

Cq. per

Cs. mel

Oc. can

Culex

All Species

No. Pools

1

43

24

31

389

704

Total Specimens

1

3041

130

295

7095

11812

No. Pools WNV +

0

0

0

0

1

1

No. Pools EEE +

0

0

0

0

0

0

Pool of WNV+ Culex Species collected in Clinton on 7/3/13

 

Weather Summary (Northborough, MA): The weather for this particular week averaged 72.54F with a recorded high temperature of 85.5F and a recorded low temperature of only 55.8F. For this week there was also a total of 0.47 inches of rain observed. Compared to the previous week, it was approximately 2.16F cooler on average, and rained about 0.44 inches more. There has been 2.06 inches of rain accumulated in July, while the total rainfall for the month of June was 1.46 inches.

 

Service Request Summary: For the year we have received 71% more requests than average; 11,160 requests to date compared to the 11 year average of 6,515. Requests were 27% more than the 2013 totals for the same time frame, 8,795 in 2013 against 11,160 in 2014. Service requests dropped (12%) from EPI week 28 to Epi week 29 for 2014 (967 vs. 649).

 

CMMCP Mosquito Summary*-

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

Last Week Last Year

Aedes vexans

+00.00%

-100.0%

N/A

Coquillettidia perturbans

+67.41%

+64.21%

Webster, Tewksbury

Culiseta melanura

+1100%

+20.00%

Holliston

Ochlerotatus canadensis

+313.3%

+121.4%

Webster

Culex Species

-62.04%

-38.81%

Shrewsbury

All Species

+52.61%

+45.20%

Webster, Shrewsbury

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

 

General narrative:

 

Compared to EPI week 28, the temperatures were slightly lower, and there were several small rain events, totaling .47 inches for this week. Once again an increase in Coquillettidia perturbans was observed, significantly in fact. Ochlerotatus canadensis and Culiseta melanura also displayed increases this week, while Culex mosquitoes experienced a significant decrease at the CDC historical trap sites. Aedes vexans was again absent from these historic trap sites and has yet to be collected at these locations in 2014. The increase in overall historical site collection numbers was largely due to the additional Cq. perturbans specimens this week. When looking at the historical CDC trap locations, Culex and Ae. vexans were the only target species present in lower levels than during the 2013 EPI week 29. At these locations, Cq. perturbans was again the principal species followed by Culex, but when all trap types are taken into consideration, these two switch predominance.

Submitted by Frank Cornine, CMMCP Field Biologist


 

Central Mass. Mosquito Control Project

Weekly Report- 7/6/14-7/12/14

EPI Week #28

 

 

Cumulative Surveillance Summary

Target Species

Ae. vex

Cq. per

Cs. mel

Oc. can

Culex

All Species

No. Pools

1

34

22

27

303

588

Total Specimens

1

1839

118

233

4431

7786

No. Pools WNV +

0

0

0

0

1

1

No. Pools EEE +

0

0

0

0

0

0

Pool of WNV+ Culex Species collected in Clinton on 7/3/13

 

Weather Summary (Northborough, MA): The weather for this particular week averaged 74.70F with a recorded high temperature of 89.4F and a recorded low temperature of only 57.6F. For this week there was also a total of 0.03 inches of rain observed. Compared to the previous week, it was approximately 0.17F warmer on average, and rained about 1.53 inches less. There has been 1.59 inches of rain accumulated in July, while the total rainfall for the month of June was 1.46 inches.

 

Service Request Summary: For the year we have received 77% more requests than average; 10,511 requests to date compared to the 11 year average of 5,952. Requests were 38% more than the 2013 totals for the same time frame, 7,628 in 2013 against 10,511 in 2014. Service requests dropped very slightly (~1%) from EPI week 27 to Epi week 28 for 2014 (977 vs. 967).

 

CMMCP Mosquito Summary*-

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

Last Week Last Year

Aedes vexans

+00.00%

-100.0%

N/A

Coquillettidia perturbans

+13.07%

-20.31%

Tewksbury, Webster

Culiseta melanura

-100.0%

-100.0%

N/A

Ochlerotatus canadensis

+00.00%

-37.50%

Webster

Culex Species

+163.4%

+58.82%

Webster, Shrewsbury, Lowell

All Species

+20.99%

-22.29%

Tewksbury, Webster

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

 

General narrative:

 

Temperatures remained steady during EPI week 28, with accumulated rainfall falling to near zero after 1.56 inches of precipitation the week before. Coquillettidia perturbans continued increase, although at a much lower level than previous weeks. Culex mosquitoes experienced the most significant increase in the CMMCP service area. Ochlerotatus canadensis remained steady, while Culiseta melanura was not collected this week. The surveillance program still has yet to collect an Aedes vexans specimen at one of the historical trap sites. The additional Cq. perturbans again produced an increase in the overall historical site collection numbers. All of our target species, except Culex, are present in lower levels than during the 2013 EPI week 28. At the historical CDC trap locations, Cq. perturbans was again the principal species followed by Culex, but when all trap types are taken into consideration, these two switch predominance.

 

Mosquitoes with West Nile Virus were confirmed July 9 in a surveillance trap set by CMMCP off Berlin Rd. on July 2. Working with the Clinton & Berlin Boards of Health, a ~1 mile radius around the trap site approximating 9 street miles was sprayed in the area July 10. Catch basins were treated in this area to stop emergence of mosquito species that can carry WNV, and additional surveillance traps have been set up to gauge population density and determine if additional virus can be isolated.

Submitted by Frank Cornine, CMMCP Field Biologist


 

Central Mass. Mosquito Control Project

Weekly Report- 6/29/14-7/5/14

EPI Week #27

 

 

Cumulative Surveillance Summary

Target Species

Ae. vex

Cq. per

Cs. mel

Oc. can

Culex

All Species

No. Pools

1

23

22

22

246

490

Total Specimens

1

1037

118

199

3623

5632

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 74.53F with a recorded high temperature of 92.8F and a recorded low temperature of only 57.3F. For this week there was also a total of 1.56 inches of rain observed. Compared to the previous week, it was approximately 4.93F warmer on average, and rained about 1.29 inches more. There has been 1.56 inches of rain accumulated in July, while the total rainfall for the month of June was 1.46 inches. For the year we have received 79% more requests than average; 9,544 requests to date compared to the 11 year average of 5,322. Requests were 54% more than the 2013 totals for the same time frame, 6,181 in 2013 against 9,544 in 2014. Service requests decreased 19% from EPI week 26 to Epi week 27 for 2014 (1,164 vs. 977).

 

CMMCP Mosquito Summary*-

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

Last Week Last Year

Aedes vexans

+00.00%

-100.0%

N/A

Coquillettidia perturbans

+113.1%

+84.59%

Webster, Tewksbury

Culiseta melanura

+90.00%

+58.33%

Tewksbury

Ochlerotatus canadensis

-50.00%

-66.67%

Webster

Culex Species

+272.7%

+64.00%

Hudson, Shrewsbury, Acton

All Species

+87.40%

+38.07%

Webster

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

 

General narrative:

 

There was an increase in temperature during EPI week 27, as well as a significant increase in rainfall. This week was approximately five degrees hotter on average with over an inch and a half of rain observed. The accumulated rainfall was more than the entire month of June experienced. As anticipated, Coquillettidia perturbans continues to experience the greatest increase at the CMMCP historical trap sites. Culiseta melanura and Culex mosquitoes are also showing increases at these sites. Continued reduction of Ochlerotatus canadensis was observed, and there still has not been an Aedes vexans specimens collected at one of the historical trap sites. Once again, the additional Cq. perturbans caused the overall collection numbers at the historical sites to significantly increase. Of our target species, only Ae. vexans and Oc. canadensis are present in lower levels than during the 2013 EPI week 27. At the historical CDC trap locations, Cq. perturbans was again the predominant species followed by Culex. The significant rainfall experienced during EPI week 27 may eventually result in an emergence of Ae. vexans and similar mosquito species.

Submitted by Frank Cornine, CMMCP Field Biologist


 

Central Mass. Mosquito Control Project

Weekly Report- 6/22/14-6/28/14

EPI Week #26

 

 

Cumulative Surveillance Summary

Target Species

Ae. vex

Cq. per

Cs. mel

Oc. can

Culex

All Species

No. Pools

1

18

19

17

204

417

Total Specimens

1

402

99

184

3023

4298

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 69.60F with a recorded high temperature of 87.5F and a recorded low temperature of only 48.4F. For this week there was also a total of 0.27 inches of rain observed. Compared to the previous week, it was approximately 0.13F warmer on average, and rained about 0.22 inches more. There has been 1.46 inches of rain accumulated in June, while the total rainfall for the month of May was 1.79 inches. For the year we have received 81% more requests than average; 8,567 requests to date compared to the 11 year average of 4,711. Requests were 81% more than the 2013 totals for the same time frame, 4,712 in 2013 against 8,567 in 2014. Service requests decreased 19% from EPI week 25 to Epi week 26 for 2014 (1,387 vs. 1,164).

 

CMMCP Mosquito Summary*-

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

Last Week Last Year

Aedes vexans

+00.00%

-100.0%

N/A

Coquillettidia perturbans

+520.8%

-79.70%

Webster, Tewksbury

Culiseta melanura

+100.0%

-87.18%

Holliston, Webster

Ochlerotatus canadensis

-31.82%

-60.53%

Webster

Culex Species

+37.50%

-78.00%

Blackstone, Northborough

All Species

+147.8%

-78.18%

Webster

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

 

General narrative:

 

Temperatures remained steady during EPI week 26, with around a quarter inch of rain. For the second consecutive week, Coquillettidia perturbans displayed the greatest increase at the CMMCP historical trap sites, with both Culiseta melanura and Culex mosquitoes showing increases as well. A reduction was observed for Ochlerotatus canadensis, while Aedes vexans still has not been collected at a historical trap site. The additional Cq. perturbans propelled a significant increase in overall collection numbers at the historical sites. All target species are currently present in lower levels than during EPI week 26 last year. At the historical CDC trap locations, Cq. perturbans was the predominant species followed by Oc. canadensis. This was the same hierarchy as EPI week 25. When all trap types are taken into consideration, Culex becomes the primary mosquito within the CMMCP service area, followed by Cq. perturbans. This species may eventually overtake Culex through further emergence over the upcoming weeks.

Submitted by Frank Cornine, CMMCP Field Biologist


 

Central Mass. Mosquito Control Project

Weekly Report- 6/15/14-6/21/14

EPI Week #25

 

 

Cumulative Surveillance Summary

Target Species

Ae. vex

Cq. per

Cs. mel

Oc. can

Culex

All Species

No. Pools

1

9

16

13

138

303

Total Specimens

1

63

89

154

1716

2455

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 69.47F with a recorded high temperature of 88.9F and a recorded low temperature of only 47.4F. For this week there was also a total of 0.05 inches of rain observed. Compared to the previous week, it was approximately 3.47F warmer on average, and rained about 0.50 inches less. There has been 1.19 inches of rain accumulated in June, while the total rainfall for the month of May was 1.79 inches. For the year we have received 84% more requests than average; 7,403 requests to date compared to the 11 year average of 4,027. Requests were 98% more than the 2013 totals for the same time frame, 3,731 in 2013 against 7,403 in 2014. Service requests decreased 25% from EPI week 24 to Epi week 25 for 2014 (1,745 vs. 1,387).

 

CMMCP Mosquito Summary*-

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

Last Week Last Year

Aedes vexans

+00.00%

+00.00%

N/A

Coquillettidia perturbans

+269.2%

+108.7%

Tewksbury, Webster

Culiseta melanura

-87.50%

-77.27%

Webster, Tewksbury

Ochlerotatus canadensis

-21.43%

+4300%

Berlin

Culex Species

-50.00%

+700.0%

Hudson, Northborough

All Species

-7.10%

+214.0%

Hudson, Northborough

The predominant mosquito for the week was Culex, followed by Ochlerotatus japonicus.

 

General narrative:

 

Temperatures continued to rise during EPI week 25, while the rainfall dropped to near nothing after two weeks of averaging close to a half an inch. At the CMMCP historical trap sites, Coquillettidia perturbans displayed the greatest increase, while a significant drop in Culiseta melanura was shown. Ochlerotatus canadensis and Culex mosquitoes also had a reduction, although not as great. Despite the increase in Cq. perturbans the overall collection numbers at the historical sites dropped slightly. Compared to last year, Cq. perturbans, Oc. canadensis, and Culex mosquitoes were all present in elevated numbers, whereas Cs.melanura continued to be in lower levels than observed in 2013. This week Cq. perturbans was the predominant species with Oc. canadensis second, through only the historical CDC trap locations. When all trap types are taken into consideration, Culex becomes the primary mosquito within the CMMCP service area, followed by Oc. japonicus. We are seeing the continued emergence of Cq. perturbans, along with strong Culex numbers. This is likely to continue for the next couple of weeks.

Submitted by Frank Cornine, CMMCP Field Biologist


 

Central Mass. Mosquito Control Project

Weekly Report- 6/8/14-6/14/14

EPI Week #24

 

 

Cumulative Surveillance Summary

Target Species

Ae. vex

Cq. per

Cs. mel

Oc. can

Culex

All Species

No. Pools

1

4

13

10

74

199

Total Specimens

1

15

84

110

502

1001

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 66.0F with a recorded high temperature of 87.5F and a recorded low temperature of only 54.6F. For this week there was also a total of 0.55 inches of rain observed. Compared to the previous week, it was approximately 0.99F warmer on average, and rained about 0.04 inches less. There has been 1.14 inches of rain accumulated in June, while the total rainfall for the month of May was 1.79 inches. For the year we have received 83% more requests than average; 6,016 requests to date compared to the 11 year average of 3,287. Requests were 93% more than the 2013 totals for the same time frame, 3,105 in 2013 against 6,016 in 2014. Service requests decreased 36% from EPI week 23 to Epi week 24 for 2014 (2,384 vs. 1,745).

 

CMMCP Mosquito Summary*-

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

Last Week Last Year

Aedes vexans

+00.00%

+00.00%

N/A

Coquillettidia perturbans

+550.0%

-77.19%

Webster, Tewksbury

Culiseta melanura

+150.0%

-6.98%

Webster, Tewksbury

Ochlerotatus canadensis

+27.27%

+522.2%

Webster

Culex Species

+166.7%

-75.76%

Westford, Littleton

All Species

-25.88%

-11.98%

Webster, Westford, Littleton

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

 

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

 

General narrative:

 

The average temperature for EPI week 24 was slightly higher than the previous week, and there was approximately a half inch of rain for the second consecutive week. Despite increases by Coquillettidia perturbans, Culiseta melanura, Ochlerotatus canadensis, and Culex mosquitoes, the overall collection numbers at the historical sites dropped significantly. This decrease was largely due to a reduction in Oc. excrucians specimens from the prior week. Compared to last year, Cq. perturbans, Cs. melanura, and Culex mosquitoes still remain low, while Oc. canadensis continues to be observed in elevated levels. Within the historical CDC trap locations, Oc. canadensis is the predominant species with Cs. melanura second. When all trap types are taken into consideration, Culex becomes the primary mosquito within the CMMCP service area. Surveillance numbers should begin to increase with rising temperatures and further emergence of Cq. perturbans as well as other species.

Submitted by Frank Cornine, CMMCP Field Biologist


 

Central Mass. Mosquito Control Project

Weekly Report- 6/1/14-6/7/14

EPI Week #23

 

 

Cumulative Surveillance Summary

Target Species

Ae. vex

Cq. per

Cs. mel

Oc. can

Culex

All Species

No. Pools

0

1

8

6

16

101

Total Specimens

0

2

44

54

36

335

No. Pools WNV +

0

0

0

0

0

0

No. Pools EEE +

0

0

0

0

0

0

 

Weather Summary (Northborough, MA): The temperatures for EPI week 23 were several degrees higher than the previous week, which allowed for mosquito activity in the evening hours. This was reflected in the surveillance trap collections being much larger than during EPI week 22. Continued emergence of early season mosquito species also likely played a role in these observations. The weather for this particular week averaged 65.01F with a recorded high temperature of 87.7F and a recorded low temperature of only 40.6F. For this week there was also a total of 0.59 inches of rain observed. Compared to the previous week, it was approximately 6.95F warmer on average, and rained about 0.19 inches more. There has been 0.59 inches of rain accumulated in June, while the total rainfall for the month of May was 1.79 inches at the CMMCP weather station (3.64” statewide avg.).

 

For the year we have received 46% more requests than average; 4,271 requests to date compared to the 11 year average of 2,915. Requests were 274% more than the 2013 totals for the same time frame, 867 in 2013 against 2,384 in 2014. Service requests increased 26% from EPI week 22 to Epi week 23 for 2014 (1,887 vs. 2,384).

 

CMMCP Mosquito Summary*-

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

Last Week Last Year

Aedes vexans

+00.00%

+00.00%

N/A

Coquillettidia perturbans

+100.0%

-50.00%

Holliston

Culiseta melanura

-38.46%

-69.23%

Holliston

Ochlerotatus canadensis

+340.0%

+633.3%

Webster

Culex Species

+20.00%

-53.85%

Webster

All Species

+216.7%

+80.95%

Webster

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

 

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

General narrative:

Several spring Aedes and Ochlerotatus species displayed large increases, as well as Oc. canadensis. There were a few individual Coquillettidia perturbans specimens as well, although this species will likely not emerge in large numbers for a couple more weeks. Culiseta melanura is lower than at this point last year, while Oc. canadensis has spiked when compared to 2013. Currently Oc. excrucians is the predominant species in the CMMCP service area, with Oc. canadensis second. Continued increases in temperature coupled with possible emergence are apt to cause surveillance collection numbers to increase in the upcoming weeks.

Submitted by Frank Cornine, CMMCP Field Biologist