Use of Electricity to Sedate Lake Trout for Intracoelomic Implantation of Electronic Transmitters

Author:

Faust Matthew D.1,Vandergoot Christopher S.1,Hostnik Eric T.2,Binder Thomas R.3,Mida Hinderer Julia L.4,Ives Jessica T.4,Krueger Charles C.5

Affiliation:

1. Ohio Department of Natural Resources, Division of Wildlife, Sandusky Fisheries Research Station, 305 East Shoreline Drive, Sandusky, Ohio, 44870, USA

2. Department of Veterinary Clinical Sciences, The Ohio State University, 601 Vernon Tharp Street, Columbus, Ohio, 43210, USA

3. Hammond Bay Biological Station, Michigan State University, 11188 Ray Road, Millersburg, Michigan, 49759, USA

4. Great Lakes Fishery Commission, 2100 Commonwealth Boulevard, Suite 100, Ann Arbor, Michigan, 48105, USA

5. Center for Systems Integration and Sustainability, Department of Fisheries and Wildlife, Michigan State University, 115 Manly Miles Building, 1405 South Harrison Road, East Lansing, Michigan, 48823, USA

Abstract

Abstract Use of telemetry data to inform fisheries conservation and management is becoming increasingly common; as such, fish typically must be sedated before surgical implantation of transmitters into the coelom. Given that no widely available, immediate-release chemical sedative currently exists in North America, we investigated the feasibility of using electricity to sedate Lake Trout Salvelinus namaycush long enough for an experienced surgeon to implant an electronic transmitter (i.e., 180 s). Specifically, our study objectives were to determine (1) whether some combination of electrical waveform characteristics (i.e., duty cycle, frequency, voltage, and pulse type) could sedate Lake Trout for at least 180 s; and (2) whether Lake Trout that were sequentially exposed to continuous DC and pulsed DC had greater rates of spinal injury and short-term mortality than control fish. A Portable Electrosedation System unit was used to sedate hatchery and wild Lake Trout. Dual-frequency pulsed-DC and two-stage approaches successfully sedated Lake Trout and had similar induction and recovery times. Lake Trout sedated using the two-stage approach did not have survival rates or spinal abnormalities that were significantly different from those of control fish. We concluded that electricity was a viable alternative to chemical sedatives for sedating Lake Trout before surgical implantation of an electronic transmitter, but we suggest that Lake Trout and other closely related species (e.g., Arctic Char Salvelinus alpinus) may require morphotype-specific electrical waveforms due to their morphological diversity. Received January 28, 2017; accepted April 24, 2017 Published online June 20, 2017

Funder

Great Lakes Fishery Commission

Great Lakes Restoration Initiative

Great Lakes Acoustic Telemetry Observation System

Great Lakes Restoration Initiative appropriations

Publisher

Oxford University Press (OUP)

Reference58 articles.

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2. Comparison of MS-222 and electronarcosis as anesthetics on cortisol levels in juvenile Atlantic Sturgeon;Balazik;Transactions of the American Fisheries Society,2013

3. Spawning site fidelity of wild and hatchery Lake Trout, Salvelinus namaycush, in northern Lake Huron;Binder;Canadian Journal of Fisheries and Aquatic Sciences,2016

4. A review of tricaine methanesulfonate for anesthesia of fish;Carter;Reviews in Fish Biology and Fisheries,2011

5. Polymorphism in Lake Trout in Great Bear Lake: intra-lake morphological diversification at two spatial scales;Chavarie;Biological Journal of the Linnean Society,2015

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