Procedures and rationale for marking sea otters captured and treated during the T/V Exxon Valdez oil spill

Biological Report 90(12)
By:  and 
Edited by: Keith Bayha and Jennifer Kormendy

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Abstract

Four methods were used for marking sea otters (Enhydra lutris) captured and treated during the response to the T/V Exxon Valdez oil spill. Colored and numbered flipper tags were placed on each sea otter that was brought to the otter treatment centers. These tags allowed individual recognition and permitted the tracking of individuals through the treatment and holding processes. Recovery of tagged carcasses may provide a crude measure of the fates of rehabilitated otters. Seven sea otters were instrumented with radio transmitters attached to flipper tags as part of a pilot release program. The results of that study were inconclusive. Forty-five sea otters were implanted with radio transmitters as part of a study to assess the fate of rehabilitated sea otters. Specific objectives of the study include estimating survived rates and monitoring the reproductive success of the sample of rehabilitated sea otters and comparing the results with similar variables in a control population. Transponder chips were injected in the perianal region of all but seven of the instrumented sea otters, and all were tagged with red flipper tags. The advantages and disadvantages of each type of tag are discussed.

Study Area

Publication type Conference Paper
Publication Subtype Conference Paper
Title Procedures and rationale for marking sea otters captured and treated during the T/V Exxon Valdez oil spill
Series title Biological Report
Series number 90(12)
DOI 10.5962/bhl.title.45854
Year Published 1990
Language English
Publisher U.S. Fish and Wildlife Service
Publisher location Anchorage, AK
Contributing office(s) Alaska Science Center
Description 6 p.
Larger Work Type Report
Larger Work Subtype Federal Government Series
Larger Work Title Sea otter symposium: Proceedings of a symposium to evaluate the response effort on behalf of sea otters after the T/V Exxon Valdez oil spill into Prince William Sound (Biological Reports 90[12])
First page 394
Last page 399
Conference Title Sea Otter Symposium: Symposium to evaluate the response effort on behalf of sea otters after the T/V Exxon Valdez oil spill into Prince William Sound
Conference Location Anchorage, AK
Conference Date April 17-19, 1990
Country United States
State Alaska
Other Geospatial Exxon Valdez
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