SEA LAMPREY CONTROL IN THE GREAT LAKES 2018 ANNUAL REPORT TO THE GREAT LAKES FISHERY COMMISSION Jessica Barber U.S. Fish and Wildlife Service Marquette, Michigan United States Mike Steeves Fisheries and Oceans Canada Sault Ste. Marie, Ontario Canada GLFC Annual Meeting Detroit, MI May 29-30, 2019 Cover: Tim Granger (U.S. Fish and Wildlife Service) searches for larval Sea Lamprey while patrolling a granular Bayluscide plot in the Detroit River. Photo: Dave Keffer, USFWS). Table of Contents INTRODUCTION ........................................................................................................................................ 8 FISH-COMMUNITY OBJECTIVES ........................................................................................................... 8 Lake Superior ................................................................................................................................... 9 Lake Michigan ................................................................................................................................. 9 Lake Huron ...................................................................................................................................... 9 Lake Erie ........................................................................................................................................ 10 Lake Ontario .................................................................................................................................. 11 LAMPRICIDE CONTROL ........................................................................................................................ 12 Lake Superior ................................................................................................................................. 15 Lake Michigan ............................................................................................................................... 19 Lake Huron .................................................................................................................................... 21 Lake Erie ........................................................................................................................................ 25 Lake Ontario .................................................................................................................................. 27 ALTERNATIVE CONTROL ..................................................................................................................... 29 Barriers ................................................................................................................................................. 29 Lake Superior ................................................................................................................................. 31 Lake Michigan ............................................................................................................................... 32 Lake Huron .................................................................................................................................... 35 Lake Erie ........................................................................................................................................ 37 Lake Ontario .................................................................................................................................. 38 Juvenile Trapping ................................................................................................................................. 39 Sterile Male Release Technique ........................................................................................................... 39 ASSESSMENT ........................................................................................................................................... 40 Larval Assessment ................................................................................................................................ 41 Lake Superior ................................................................................................................................. 41 Lake Michigan ............................................................................................................................... 50 Lake Huron .................................................................................................................................... 57 Lake Erie ........................................................................................................................................ 63 Lake Ontario .................................................................................................................................. 65 Juvenile Assessment ............................................................................................................................. 68 Lake Superior ................................................................................................................................. 68 Lake Michigan ............................................................................................................................... 69 Lake Huron .................................................................................................................................... 70 Lake Erie ........................................................................................................................................ 72 Lake Ontario .................................................................................................................................. 73 Adult Assessment ................................................................................................................................. 74 Lake Superior ................................................................................................................................. 74 Lake Michigan ............................................................................................................................... 77 Lake Huron .................................................................................................................................... 79 Lake Erie ........................................................................................................................................ 81 Lake Ontario .................................................................................................................................. 83 RISK MANAGEMENT .............................................................................................................................. 86 TASK FORCE REPORTS .......................................................................................................................... 90 Lampricide Control Task Force............................................................................................................ 90 Barrier Task Force ................................................................................................................................ 92 Larval Assessment Task Force ............................................................................................................. 95 Trapping Task Force ............................................................................................................................ 97 COMMUNICATIONS AND OUTREACH ............................................................................................. 101 PERMANENT EMPLOYEES OF THE SEA LAMPREY CONTROL PROGRAM .............................. 103 1 Tables Table 1. Summary of lampricide applications in tributaries of the Great Lakes in 2018. ............12 Table 2. Details on the application of lampricides to tributaries and lentic areas of Lake Superior during 2018 (letter in parentheses corresponds to location of stream in Figure 2). .......................16 Table 3. Details on the application of lampricides to tributaries and lentic areas of Lake Michigan during 2018 (letter in parentheses corresponds to location of stream in Figure 2). .......................20 Table 4. Details on the application of lampricides to tributaries and lentic areas of Lake Huron during 2018 (letter in parentheses corresponds to location of stream in Figure 2). .......................23 Table 5. Details on the application of lampricides to tributaries and lentic areas of Lake Erie during 2018 (letter in parentheses corresponds to location of stream in Figure 2). .......................26 Table 6. Details on the application of lampricides to tributaries of Lake Ontario during 2018 (letter in parentheses corresponds to location of stream in Figure 2).......................................................28 Table 7. Status of concurrence requests for barrier removals, replacements, or fish passage projects in Lake Superior tributaries during 2018. ........................................................................31 Table 8. Status of concurrence requests for barrier removals, replacements, or fish passage projects in Lake Michigan tributaries during 2018. .......................................................................34 Table 9. Status of concurrence requests for barrier removals, replacements, or fish passage projects in Lake Huron tributaries during 2018. ............................................................................36 Table 10. Status of concurrence requests for barrier removals, replacements, or fish passage projects in Lake Erie tributaries during 2018. ...............................................................................38