METROPOLITAN MOSQUITO CONTROL DISTRICT 2020 OPERATIONAL REVIEW & PLANS FOR 2021 Annual Report to the Technical Advisory Board Joe Elling, Field Operations Supervisor, Plymouth Facility, testing larvicide treatments by drone in a small wetland. MMCD photo Metro Counties Government Center ~ 2099 University Avenue West ~ St. Paul, MN 55104-3431 www.mmcd.org Metropolitan Mosquito Control District Mission Technical Advisory Board The MMCC formed the TAB in 1981 to provide annual, The Metropolitan Mosquito Control District’s mission is to promote health and well-being by independent review of the field control programs, to enhance protecting the public from disease and annoyance inter-agency cooperation, and to facilitate compliance with caused by mosquitoes, black flies, and ticks in an Minnesota State Statute 473.716. environmentally sensitive manner. Technical Advisory Board Members Governance 2020-2021 The Metropolitan Mosquito Control District, Stephen Kells, Chair University of Minnesota established in 1958, controls mosquitoes and Donald Baumgartner US EPA gnats and monitors ticks in the metropolitan Phil Monson Mn Pollution Control Agency counties of Anoka, Carver, Dakota, Hennepin, Ramsey, Scott, and Washington. The District John Moriarty Three Rivers Park District operates under the eighteen-member Metropolitan Elizabeth Schiffman Mn Department of Health Mosquito Control Commission (MMCC), Gary Montz Mn Dept. of Natural Resources composed of county commissioners from the Susan Palchick Hennepin Co. Public Health participating counties. An executive director is responsible for the operation of the program and Robert Sherman Independent Statistician reports to the MMCC. Vicki Sherry US Fish & Wildlife Service Christopher Smith Mn Dept. of Transportation Metropolitan Mosquito Control Christine Wicks Mn Dept. of Agriculture Commission 2021 Jeff Reinert Anoka County Scott Schulte Anoka County Robyn West Anoka County Metropolitan Mosquito Control District Gayle Degler Carver County Contributing Staff Tom Workman Carver County Stephen Manweiler Executive Director Mary Hamann-Roland Dakota County Diann Crane Entomologist Laurie Halvorson Dakota County Janet Jarnefeld Technical Services/Tick Liz Workman Dakota County Kirk Johnson Vector Ecologist Kevin Anderson Hennepin County Carey LaMere Technical Services/Black Fly Angela Conley Hennepin County Scott Larson Assistant Entomologist Chris LaTondresse Hennepin County Alex Carlson Public Affairs Jim McDonough Ramsey County Nancy Read Technical Services Coordinator Mary Jo McGuire Ramsey County Mark Smith Purchasing Lead Rafael Ortega Ramsey County John Walz Technical Services/Black Fly Michael Beard Scott County Tom Wolf Scott County Gary Kriesel Washington Co. Lisa Weik Washington Co. DRAFT Annual Report to the Technical Advisory Board DRAFT Table of Contents EXECUTIVE SUMMARY ..................................................................................................................................................i CHAPTER 1 MOSQUITO SURVEILLANCE .................................................................................................................... 1 Background .................................................................................................................................................................. 1 2020 Surveillance ........................................................................................................................................................ 2 Precipitation............................................................................................................................................................ 2 Larval Collections .................................................................................................................................................. 6 Adult Mosquito Collections ................................................................................................................................... 8 Monday Night Network................................................................................................................................... 8 Sweep Net Collections .................................................................................................................................... 9 CO2 Trap Collections ...................................................................................................................................... 9 Geographic Distribution ................................................................................................................................ 10 Seasonal Distribution .................................................................................................................................... 15 New Jersey Light Traps ................................................................................................................................. 18 Coquillettidia perturbans Population Prediction .................................................................................................. 21 Rare Detections .................................................................................................................................................... 21 2021 Plans – Surveillance .......................................................................................................................................... 23 CHAPTER 2 MOSQUITO-BORNE DISEASE ................................................................................................................. 24 Background ................................................................................................................................................................ 24 2020 Mosquito-borne Disease Services ..................................................................................................................... 25 Source Reduction ................................................................................................................................................. 25 La Crosse Encephalitis ......................................................................................................................................... 26 Aedes triseriatus Surveillance and Control ................................................................................................... 26 La Crosse Encephalitis in Minnesota ............................................................................................................ 27 Exotic Species ............................................................................................................................................... 27 Aedes albopictus ........................................................................................................................................ 27 Aedes japonicus ......................................................................................................................................... 28 West Nile Virus .................................................................................................................................................... 29 Adult Culex Surveillance ...................................................................................................................................... 31 Larval Culex Surveillance .................................................................................................................................... 34 Eastern Equine Encephalitis ................................................................................................................................. 37 Western Equine Encephalitis ................................................................................................................................ 39 Jamestown Canyon Virus ..................................................................................................................................... 39 2021 Plans – Mosquito-borne Disease ....................................................................................................................... 40 CHAPTER 3 TICK-BORNE DISEASE ............................................................................................................................. 41 Background ................................................................................................................................................................ 41 2020 Tick-borne Disease Services ............................................................................................................................. 42 Lyme Disease and Human Anaplasmosis ............................................................................................................. 42 Ixodes scapularis Distribution Study.................................................................................................................... 42 Tick-borne Disease Prevention Services .............................................................................................................. 44 Additional Updates ............................................................................................................................................... 44 2021 Plans for Tick-borne Services ........................................................................................................................... 46 Surveillance and Disease Prevention Services ..................................................................................................... 46 New or