Article (Scientific journals)
The behavioural repertoire of Arctic charr (Salvelinus alpinus (L.)) in captivity: A case study for testing ethogram completeness and reducing observer effects
Bolgan, Marta; O' Brien, Joanne; Gammell, Martin
2015In Ecology of Freshwater Fish, 25 (2), p. 318-328
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Keywords :
Behavioural accumulation curves; Captivity; Dichotomous key of behaviour; Ethogram; Fish
Abstract :
[en] In the last 20 years, research has been directed towards possible differences in the mating behaviour of species belonging to the Salmonidae family that may reproductively isolate wild populations from escaped hatchery or farmed fish. Despite these studies, a detailed description of the overall behavioural repertoire of Salmonidae species from wild and farmed environments is still lacking. Furthermore, although Arctic charr has been described as the most variable between all vertebrate species, possible behavioural plasticity outside of the breeding season has not been widely investigated, and a complete ethogram for Arctic charr not in breeding condition is currently unavailable. This study presents the first complete ethogram of captive Arctic charr behaviour outside of the breeding season. The completeness of this ethogram was validated based on the Behavioural Accumulation Curves methodology, a reliable and easy to use tool for assessing the best compromise between sampling effort and ethogram completeness. Additionally, a new way of presenting an ethogram has been proposed and validated using a dichotomous key to describe behaviour types. This proved to be a more effective operational tool for identifying Arctic charr behaviour than the ethogram. The dichotomous key of behaviour led to a significantly less ambiguous identification of behavioural units, thus reducing observer, recording errors and enhancing accuracy. This study therefore represents an effective step forward to a more in-depth and rigorous comparison of Arctic charr behavioural adaptation between and within artificial and natural settings. © 2016 John Wiley & Sons A/S.
Disciplines :
Aquatic sciences & oceanology
Author, co-author :
Bolgan, Marta ;  Université de Liège > Département de Biologie, Ecologie et Evolution > Morphologie fonctionnelle et évolutive
O' Brien, Joanne
Gammell, Martin
Title :
The behavioural repertoire of Arctic charr (Salvelinus alpinus (L.)) in captivity: A case study for testing ethogram completeness and reducing observer effects
Publication date :
2015
Journal title :
Ecology of Freshwater Fish
ISSN :
0906-6691
eISSN :
1600-0633
Publisher :
Blackwell Munksgaard
Volume :
25
Issue :
2
Pages :
318-328
Peer reviewed :
Peer Reviewed verified by ORBi
Commentary :
cited By 0 Scopus
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since 26 October 2016

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