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Long-term retention of acoustic telemetry transmitters in temperate predators revealed by predation tags implanted in wild prey fish |
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| Authors: | Natalie V Klinard Jordan K Matley Aaron T Fisk Timothy B Johnson |
| Institution: | 1. Great Lakes Institute for Environmental Research, University of Windsor, Windsor, Ontario, Canada;2. Ontario Ministry of Natural Resources and Forestry, Glenora Fisheries Station, Picton, Ontario, Canada |
| Abstract: | Bloater Coregonus hoyi (n = 48) were implanted with V9DT-2x predation transmitters and monitored on 105 acoustic receivers in eastern Lake Ontario for >6 months. Twenty-three predation events were observed, with predator retention of tags ranging from ≤1 to ≥194 days and 30% of retentions lasting >150 days. Long tag retention times raise concerns for acoustic telemetry analysis and the health of piscivorous predators retaining tags. |
| Keywords: | acoustic telemetry coregonid gut evacuation Laurentian Great Lakes predation tag retention |