Week 39 – Sept 25-Oct 1

2011 MOSQUITO REPORT: WEEK 39

Report based on data collected from traps deployed the week of September 25, 2011 through October 1, 2011. Report prepared by John Smith, Chan Suom, M.S., and Nate Boonisar.

1. CURRENT MOSQUITO ACTIVITY/TREND

CDC Light Traps:
Host-seeking mosquito activity continues to be average which is normal for this time of season, although some sites continue to produce mammalophilicmosquitoes as a result of wet conditions from the past month. Towns that are experiencing a higher rate of mosquito activity include: Canton, Bellingham,Franklin, Holbrook, Medfield, Millis, Quincy, Sharon, parts of Walpole, and Weymouth.

Gravid Traps:
Gravid trap mosquito collections are mostly average to lower than average. Only Dover, Medway, Needham, and Wrentham collected higher than average numbers of gravid mosquitoes.

2. CURRENT PREDOMINANT SPECIES

CDC Light Traps:
Aedes vexans populations continue to drop throughout the county although they are numerous in Bellingham, Canton, Franklin, Medfield, Millis, Quincy, parts of Walpole, and Weymouth. Psorophora ferox continues to be overabundant in Canton. Ochlerotatus canadensis mosquitoes are higher than average in Sharon and Millis. Culiseta melanura numbers have come down in most parts of the county but continue to be plentiful in Holbrook, Millis, Sharon, and parts ofWalpole.

Gravid Traps:
Gravid Culex pipiens/restuans mosquito populations are mostly below average this week. Oc. japonicus populations are higher than average in Canton,Norwood, and Randolph.

3. COMPARISON TO PREVIOUS SEASON

Except for the high numbers of recently emerged, flood-dependent species of mosquitoes, most trap sites are collecting an average number of mosquitoes. The flood prone areas in Norfolk County will continue to experience periodic increases in mosquito activity until the first hard frost. We have ended our surveillance program for the season with the notion that the upcoming weeks’ activity levels will be low as colder night time temperatures become the norm.

4. WEATHER SUMMARY

No weather report available this week.

5. NUMBER OF REQUESTS FOR SERVICE

NCMCP received 7,598 calls year to date for service. NCMCP has discontinued recording calls from residents requesting ULV applications.

6. MCP/COMMISSION RESPONSE

NCMCP discontinued all early morning ground ULV applications due to the forecast of unfavorable weather conditions. NCMCP personnel have shifted operations to water management activities. Public outreach continues in all member communities relative to personnel protection. NCMCP has suspended these weekly activity reports until next season.

Contact

144 Production Rd, Suite C

Walpole, MA 02081

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