Instrumentation and handling effects on Antarctic fur seals (Arctocephalus gazella)

Show simple item record Blanchet, Marie-Anne Lydersen, Christian Biuw, Martin De Bruyn, P.J. Nico Hofmeyr, G.J. Greg (Gordon John Gregory) Krafft, Bjørn A. Kovacs, Kit M., 1956- 2015-09-02T08:42:25Z 2015-09-02T08:42:25Z 2014
dc.description.abstract The use of biologging instruments has greatly improved our understanding of the behaviour, physiology and ecology of free-ranging marine mammals. However, handling wild animals and attaching instruments to streamlined bodies can cause stress and potentially influence behaviour and swimming/ diving energetics. The goals of this study, undertaken on Bouvetøya, were (1) to determine if the first trip to sea after instrumentation is representative of subsequent trips in lactating Antarctic fur seals, to explore potential handling effects and assess possible biases in having multiple short-duration deployments (inflating N, using a limited number of tags) and (2) to evaluate potential effects of two different instrument combinations (SMRU satellite data relay loggers and very high frequency radio transmitters versus Wildlife Computers time depth recorders and very high frequency radio transmitters) on trip durations, dive parameters, female body condition and pup growth. Handling did not appear to have any effects on the parameters studied; data from the first and second trips did not differ significantly. This implies that multiple short-term deployments are unlikely to result in biased data in this species. Instrument type did have measurable effects; time-at-sea was greater and pup growth was lower for pairs in which mothers carried bulkier instruments. This suggests that instrument streamlining is important to avoid negative impacts and that bulkier equipment should be deployed on lactating females with caution and only for short periods. The study highlights that instrument effects should be taken into account when comparing data from experiments collected using different equipment packages. en_ZA
dc.description.librarian hb2015 en_ZA
dc.description.sponsorship Norwegian Antarctic Research Expedition. Norwegian Research Council. en_ZA
dc.description.uri en_ZA
dc.identifier.citation Blanchet, M-A, Lydersen, C, Biuw, M, De Bruyn, PJN, Hofmeyr, GJG, Krafft, BA & Kovacs, KM 2014, 'Instrumentation and handling effects on Antarctic fur seals (Arctocephalus gazella)', Polar Research, vol. 33, no. 21630, pp. 1-10. en_ZA
dc.identifier.issn 0800-0395 (print)
dc.identifier.issn 1751-8369 (online)
dc.identifier.other 10.3402/polar.v33.21630
dc.language.iso en en_ZA
dc.publisher Co-Action Publishing en_ZA
dc.rights © 2014 M.-A. Blanchet et al. This is an Open Access article distributed under the terms of the Creative Commons Attribution-Noncommercial 3.0. International License ( en_ZA
dc.subject Bioenergetics en_ZA
dc.subject Biologging en_ZA
dc.subject Instrument effects en_ZA
dc.subject Satellite relay data loggers (SRDLs) en_ZA
dc.subject Timedepth recorders (TDRs) en_ZA
dc.subject Platform transmitter terminals (PTTs) en_ZA
dc.subject Very high frequency radio transmitters (VHFs) en_ZA
dc.title Instrumentation and handling effects on Antarctic fur seals (Arctocephalus gazella) en_ZA
dc.type Article en_ZA

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