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Risk-taking behaviour variation over time in sea bass Dicentrarchus labrax: effects of day-night alternation, fish phenotypic characteristics and selection for growth ArchiMer
Millot, Sandie; Begout, Marie-laure; Chatain, Beatrice.
Differences in bold and shy personality on sea bass Dicentrarchus labrax were investigated between a population (wild) produced from wild-brood fish and a population (selected) produced from selected-brood fish. During the experiment (112 days), fish were reared under self-feeding condition to characterize the feeding behaviour of each individual fish. Three risk-taking tests (T1, T2 and T3 of 24 h with day-night alternation) were carried out at > 1 month intervals on 180 fish of each strain in order to monitor D. labrax behaviour over time and in relation to the light:dark period. A risk-taking score was evaluated via a preference choice between a safe zone (without food) and a risky zone (potentially with food) by recording the number and the duration...
Tipo: Text Palavras-chave: Learning; Habituation; Domestication; Choice test; Boldness.
Ano: 2009 URL: http://archimer.ifremer.fr/doc/2009/publication-7313.pdf
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First links between self-feeding behaviour and personality traits in European seabass, Dicentrarchus labrax ArchiMer
Ferrari, Sebastien; Benhaim, David; Colchen, Tatiana; Chatain, Beatrice; Begout, Marie-laure.
Most studies carried out with seabass under self-feeding conditions report an intriguing social structure that is built around the device and the food dispenser with three coexisting triggering categories: high-triggering (HT), low-triggering (LT) and zero-triggering (ZT) fish. However, neither sex nor feeding motivation or hierarchy can explain the establishment of this specialization. We characterised the personality of seabass with the commonly used restraint and open field tests and assessed the link between personality traits and individual triggering activity towards the self-feeder apparatus. We found no differences between triggering categories during the restraint test but high triggering fish were characterised as shyer than low- and...
Tipo: Text Palavras-chave: Behaviour; Boldness; Foraging; Open field test; Restraint test; Teleost.
Ano: 2014 URL: https://archimer.ifremer.fr/doc/00216/32742/31147.pdf
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Self-feeding behaviour and personality traits in tilapia: a comparative study between Oreochromis niloticus and Sarotherodon melanotheron ArchiMer
Benhaim, David; Akian, Dieudonne; Ramos, Mathieu; Ferrari, Sebastien; Yao, Kouakou; Begout, Marie-laure.
Hybridization aims at combining valuable traits from two species into a single group. Nile tilapia Oreochromis niloticus (NT) and Black-chinned tilapia Sarotherodon melanotheron (BCT) are respectively characterized by fast growth and water salinity tolerance which attract the breeders who could take advantage of both species. The first step is to characterize both species behavior in different contexts. The aim of this study was to compare the self-feeding behaviour between NT and BCT with a design allowing to reveal individual and group feed demand behaviour and then to identify the individual specialization that builds around the device and the food dispenser. The second objective was to estimate the links between the individual specialization and...
Tipo: Text Palavras-chave: Boldness; Personality; Self-feeder; Individual specialization; Social structure.
Ano: 2017 URL: http://archimer.ifremer.fr/doc/00363/47419/47424.pdf
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