Week 29 – July 14-20

2013 MOSQUITO REPORT: WEEK 29

Report based on data collected from traps deployed the week of July 14-20, 2013. Report prepared by Chan Suom, M.S., Dave Lawson, and Nate Boonisar.

1. CURRENT MOSQUITO ACTIVITY/TREND

CDC Light Traps:
CDC light traps collections are mixed this week. The following towns resported higher than average collections: Canton, Dedham, Dover, Norfolk, Sharon, Walpole, and Westwood.

Gravid Traps:
Gravid mosquito collections are higher than average through all of Norfolk County.

 2. CURRENT PREDOMINANT SPECIES

CDC Light Traps:
We are still seeing high numbers of Aedes vexans, Psorophora ferox, and Coquillettidia perturbans though their populations are no match for the collections from earlier in the season. Canton and Dedham are consistently active with high numbers of these mosquitoes. Westwood reported an explosion of Ae. vexans and Co. perturbans with no indication of the like from the previous week.  Uranotaenia sapphirina has made a definite appearance this week as they were plentiful in traps across the county. Though the previous week indicated the contrary, Culiseta melanurapopulations are lower than average.

Gravid Traps:
Culex pipiens/restuans are predominant in these traps and their numbers had increased substantially over the past few weeks.

3. COMPARISON TO PREVIOUS SEASON

The overall mosquito population for this week is about average compared to the historical averages for each town. Towns along the Neponset and Charles River flood plains are experiencing the after effects of mosquito breeding exacerbated by constant humidity, past past rainfalls, and past flooding events. Precipitation this coming week will only create more habitat for mosquitoes.

4. WEATHER SUMMARY

Weather this week was hot and humid with temperatures in the 90’s each day. The only precipitation occurred on Saturday along the extreme southern border of the district from Plainville to Avon where ¼ to ½ inch fell from a line of thunderstorms with a trace to a tenth of an inch further north into Franklin and Walpole.

Total weekly rainfall:  0.00 inches (-0.68 in.)
Total Monthly rainfall:  0.52 inches (-1.45 in.)
Total Yearly rainfall: 25.27 inches (+2.02 in.)

5. NUMBER OF REQUESTS FOR SERVICE

We received 312 service requests this week, with a total of 6,611 service requests for the year.

6. MCP/COMMISSION RESPONSE

The Norfolk County Mosquito Control District continues to receive a large number of requests, district-wide, for ULV applications and the district continues to respond to these requests with ULV applications.

Contact

144 Production Rd, Suite C

Walpole, MA 02081

Office: (781) 762-3681
Fax: (781) 769-6436