|Title||A float-release package for recovering data-loggers from wild sharks|
|Publication Type||Journal Article|
|Year of Publication||2016|
|Authors||Whitmore B.M, White C.F, Gleiss A.C, Whitney N.M|
|Journal||Journal of Experimental Marine Biology and Ecology|
|Type of Article||Article|
|Keywords||Accelerometer; activity patterns; adelie penguins; behavior; habitat use; management; movements; Radio telemetry; rhinoptera-bonasus; strategies; Tag recovery; whale sharks; white sharks|
The rapidly expanding use of high-resolution data-loggers to study marine vertebrates presents a wealth of new opportunities for understanding the behavior, physiology, and ecology of these animals in situ. It also presents a number of new logistical challenges, one of the biggest of which is the need to physically recover the tag in order to acquire data, thus, a novel data-logger release and recovery package was designed and tested. This package consisted of a microsphere-resin float, very high frequency (VHF) transmitter, and galvanic timed release (GTR) device which allowed acceleration data logger (ADL) tags to remain on free-living sharks for several days before detaching from the fin. Upon release, tags floated to the surface and were located using a VHF receiver and yagi antenna. This method has been used successfully on blacktip, bull, nurse, and white sharks to produce an overall recovery rate of 95.7% on 47 deployments over periods of 1-111 h and shark displacement distances up to 35 km. This represents a cost-effective method for recovering data-loggers from sharks and large teleosts. (C) 2015 Elsevier B.V. All rights reserved.