A Methodological Framework to Estimate the Site Fidelity of Tagged Animals Using Passive Acoustic Telemetry

Type Article
Date 2015-08
Language English
Author(s) Capello Manuela1, 2, Robert MarianneORCID3, Soria Marc4, Potin Gael4, Itano David5, Holland Kim5, Deneubourg Jean-Louis2, Dagorn Laurent1
Affiliation(s) 1 : Univ Montpellier, CNRS, IFREMER, IRD,UMR MARBEC, Sete, France.
2 : Univ Libre Bruxelles, Unit Social Ecol, Brussels, Belgium.
3 : French Inst Res & Exploitat Sea IFREMER, Fishery Technol & Biol Lab, Lorient, France.
4 : Univ Montpellier, CNRS, IFREMER, IRD,UMR MARBEC, St Denis, Reunion.
5 : Univ Hawaii Manoa, Hawaii Inst Marine Biol, Kaneohe, HI USA.
Source Plos One (1932-6203) (Public Library Science), 2015-08 , Vol. 10 , N. 8 , P. -
DOI 10.1371/journal.pone.0134002
WOS© Times Cited 10
Abstract The rapid expansion of the use of passive acoustic telemetry technologies has facilitated unprecedented opportunities for studying the behavior of marine organisms in their natural environment. This technological advance would greatly benefit from the parallel development of dedicated methodologies accounting for the variety of timescales involved in the remote detection of tagged animals related to instrumental, environmental and behavioral events. In this paper we propose a methodological framework for estimating the site fidelity (“residence times”) of acoustic tagged animals at different timescales, based on the survival analysis of continuous residence times recorded at multiple receivers. Our approach is validated through modeling and applied on two distinct datasets obtained from a small coastal pelagic species (bigeye scad, Selar crumenophthalmus) and a large, offshore pelagic species (yellowfin tuna, Thunnus albacares), which show very distinct spatial scales of behavior. The methodological framework proposed herein allows estimating the most appropriate temporal scale for processing passive acoustic telemetry data depending on the scientific question of interest. Our method provides residence times free of the bias inherent to environmental and instrumental noise that can be used to study the small scale behavior of acoustic tagged animals. At larger timescales, it can effectively identify residence times that encompass the diel behavioral excursions of fish out of the acoustic detection range. This study provides a systematic framework for the analysis of passive acoustic telemetry data that can be employed for the comparative study of different species and study sites. The same methodology can be used each time discrete records of animal detections of any nature are employed for estimating the site fidelity of an animal at different timescales.
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