Effect of size grading on sea bass (<i>Dicentrarchus labrax</i>) juvenile self-feeding behaviour, social structure and culture performance

Benhaïm, David; Péan, Samuel; Brisset, Blandine; Leguay, Didier; Bégout, Marie‐Laure; Chatain, Béatrice

doi:10.1051/alr/2011140

Cited by 21 publications

(22 citation statements)

References 71 publications

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“…; Benhaïm et al . , ), comprise the available data base for European seabass behaviour during rearing. In this study, behavioural monitoring was performed while fish were under calm conditions, during feeding, when stress events occurred and during specific periods (the spawning period and the high water temperature period).…”

Section: Discussionmentioning

confidence: 99%

“…In particular, there is limited available information about the behaviour of European sea bass, Dicentrarhus labrax, during on-growing in sea cages. Feeding behaviour has been studied in small tanks (Azzaydi, Madrid, Zamora, S anchez-V azquez & Mart ınez 1998;Paspatis, Maragoudaki & Kentouri 2002;Valverde, Mendiola L opez & De Costa 2005;Di-Poi, Beauchaud, Bouchut, Dutto, Cov es & Attia 2008;Millot & B egout 2009;Millot, B egout & Chatain 2009a;Benha€ ım, P ean, Brisset, Leguay, B egout & Chatain 2011;Benha€ ım, B egout, P ean, Brisset, Leguay & Chatain 2012a) with focus on feeding behaviour and individual variations, changes due to water current and dominance hierarchies in small groups. A few studies looked at feeding with different feeding practices in large cages (Andrew, Noble, Kadri, Jewell & Huntingford 2002;Sar a, Oliveri, Martino & Campobello 2010) presenting information on the swimming activity of the individuals.…”

Section: Introductionmentioning

confidence: 99%

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Behaviour of European sea bass,Dicentrarchus labraxL., in cages - impact of early life rearing conditions and management

et al. 2012

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European sea bass, Dicentrarchus labrax L., groups reared under different conditions during larval stages (mesocosm and intensive rearing) were monitored during on-growing in sea cages until marketable size (350-400 g). Four caged groups were followed for a period of 17 months each at a pilot scale farm, where vertical distribution behaviour was monitored. This was performed while fish were under calm conditions, during feeding and when stress events occurred. Also during two specific periods: (i) spawning and (ii) high water temperature. Clear differences in the behavioural pattern of swimming depth, displacement and used space between the groups were observed. The individuals from the mesocosm rearing were more sensitive to human presence, showing stronger reactions (speed of displacement and vertical distribution). Most pronounced differences were observed during the 'extreme' warm period and the reproductive season. Within the seasons, European sea bass responded during feeding and stress showing a tendency to move deeper compared to calm conditions. The increased displacements were longer during feeding and stress.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Behaviour of European sea bass,Dicentrarchus labraxL., in cages - impact of early life rearing conditions and management

et al. 2012

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“…A number of studies have shown a positive effect of size grading on the growth of small fish (Gunnes 1976;Jobling & Reisner 1987;Seppä et al 1999;Dou et al 2004). However, several other studies do not support the notion of a positive effect on growth (Wallace & Kolbeinshavn 1988;Baardvik & Jobling 1990;Carmichael 1994;Sunde et al 1998;Stefánsson et al 2000;Martins et al 2005;SalasLeiton et al 2010;Benhaïm et al 2011).…”

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confidence: 96%

“…Any substantial or systematic reproduction, redistribution, reselling, loan, sub-licensing, systematic supply, or distribution in any form to anyone is expressly forbidden. Terms & Conditions of access and use can be found at http://www.tandfonline.com/page/termsand-conditions Introduction Variation in individual growth rate within a fish stock is a common and significant obstacle to profitable management in commercial fish culture (Jobling 1985;Knights 1987;Barki et al 2000;Benhaïm et al 2011). This differential growth rate produces a heterogeneous fish size population which makes feeding and harvesting operation difficult in the fish farm setting.…”

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confidence: 99%

Effect of size grading on the growth performance of shortfin eel (Anguilla australis) during its yellow stage

Hirt-Chabbert

Sabetian

Young

2014

New Zealand Journal of Marine and Freshwater Research

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It is generally believed that size grading in a fish farm improves the total biomass output, because it will minimise the stress imposed by larger individuals over small individuals, resulting in higher feed intake and growth rate. The objective of this study was to evaluate the effect of size grading on individual growth performance of yellow New Zealand shortfin eel (Anguilla australis). A 109 day trial was conducted in a recirculation aquaculture system (RAS) with 103 eels of similar initial weight (101 ± 12 g). All eels were individually marked by PIT (passive integrated transponder) tags. On day 42, eels were graded to establish the following groups: only small eels (S-graded ≤ 135 g), only large eels (L-graded > 135 g), and small and large eels together (S-ungraded and L-ungraded). The large eels showed better specific growth rate (SGR), feed intake (FI) and feed conversion ratio (FCR) than the small eels. Nevertheless, no significant differences were found either between L-graded and L-ungraded or between S-graded and S-ungraded. The age of eels was not significantly different between groups. These findings suggest that the individual growth rate performance of the eels is not primarily a consequence of social interaction among tank-mates.

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“…This explains why little is known about the effects on the early steps of domestication or selection for growth apart from classical traits of commercial interest [29], [30] and personality trait differences between wild and selected fish [31]. This species has indeed demonstrated a great ability and plasticity in learning to press a lever to receive a food reward [32], [33], [34], [35], [36], [37], [38]. Under other experimental conditions i.e.…”

Section: Introductionmentioning

confidence: 99%

First Insight into Exploration and Cognition in Wild Caught and Domesticated Sea Bass (Dicentrarchus labrax) in a Maze

Benhaïm

Bégout²,

Lucas³

et al. 2013

PLoS ONE

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European sea bass aquaculture is so recent that very little is known on the effects of the early steps of its domestication. Behavioural parameters are sensitive indicators of the domestication process since they are generally impacted as soon as the first generation. The present work compared wild-caught and domesticated sea bass juvenile swimming activity, exploration and ability to learn to discriminate between two 2-D objects associated to a simple spatial task that enabled the tested individual to visually interact with an unfamiliar congener (the reward) located behind a transparent wall at the end of one of the two arms of a maze. Ten fish from each origin were individually tested 3 times in a row during 3 days (9 trials in total). Fish were placed in a start box closed by a transparent wall located in front of two 2-D objects. Fish were filmed during 10 min after the removal of the start box wall. Different swimming variables including angular velocity, total distance travelled and velocity mean, were analyzed from videos as well as the time spent in each of 6 virtual zones including the reward zone near the congener (Cong) and the zone opposite to the reward zone (OpCong). Two learning criteria were chosen: the number of successful turns and time to reach Cong. Behavioural differences were found between domesticated and wild fish. Angular velocity was higher in wild fish while the distance travelled and the velocity mean were higher in domesticated ones. Wild and domesticated fish spent most of the time in Cong and in OpCong. No differences were seen in learning ability between wild and domesticated fish. However, our findings for learning require confirmation by further studies with larger numbers of learning sessions and experiments designed to minimise stress. This study therefore demonstrated an impact of domestication on swimming behaviour but not on spatial learning.

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Effect of size grading on sea bass (Dicentrarchus labrax) juvenile self-feeding behaviour, social structure and culture performance

Cited by 21 publications

References 71 publications

Behaviour of European sea bass,Dicentrarchus labraxL., in cages - impact of early life rearing conditions and management

Behaviour of European sea bass,Dicentrarchus labraxL., in cages - impact of early life rearing conditions and management

Effect of size grading on the growth performance of shortfin eel (Anguilla australis) during its yellow stage

First Insight into Exploration and Cognition in Wild Caught and Domesticated Sea Bass (Dicentrarchus labrax) in a Maze

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