| Enregistrements |
| Auteur |
Ferrari, S.; Horri, K.; Allal, F.; Vergnet, A.; Benhaim, D.; Vandeputte, M.; Chatain, B.; Begout, M.-L. |
| Titre |
Heritability of Boldness and Hypoxia Avoidance in European Seabass, Dicentrarchus labrax |
Type |
Article scientifique |
| Année |
2016 |
Publication |
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Revue Abrégée |
PLoS One |
| Volume |
11 |
Numéro |
12 |
Pages |
e0168506 |
| Mots-Clés |
atlantic salmon; behavioral plasticity; confinement stress; individual-differences; rainbow-trout; rearing conditions; Risk-taking; salmon salmo-salar; stress-coping styles; trout oncorhynchus-mykiss |
| Résumé |
To understand the genetic basis of coping style in European seabass, fish from a full factorial mating (10 females x 50 males) were reared in common garden and individually tagged. Individuals coping style was characterized through behavior tests at four different ages, categorizing fish into proactive or reactive: a hypoxia avoidance test (at 255 days post hatching, dph) and 3 risk-taking tests (at 276, 286 and 304 dph). We observed significant heritability of the coping style, higher for the average of risk-taking scores (h(2) = 0.45 +/- 0.14) than for the hypoxia avoidance test (h(2) = 0.19 +/- 0.10). The genetic correlations between the three risk-taking scores were very high (r(A) = 0.96-0.99) showing that although their repeatability was moderately high (r(P) = 0.64-0.72), successive risk-taking tests evaluated the same genetic variation. A mild genetic correlation between the results of the hypoxia avoidance test and the average of risk-taking scores (0.45 +/- 0.27) suggested that hypoxia avoidance and risk-taking tests do not address exactly the same behavioral and physiological responses. Genetic correlations between weight and risk taking traits showed negative values whatever the test used in our population i.e. reactive individual weights were larger. The results of this quantitative genetic analysis suggest a potential for the development of selection programs based on coping styles that could increase seabass welfare without altering growth performances. Overall, it also contributes to a better understanding of the origin and the significance of individual behavioral differences. |
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| Auteur institutionnel |
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Thèse |
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Lieu de Publication |
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Éditeur |
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| Langue |
English |
Langue du Résumé |
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Titre Original |
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Titre de collection |
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Titre de collection Abrégé |
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Numéro de collection |
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Edition |
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| ISSN |
1932-6203 |
ISBN |
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Médium |
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Expédition |
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Conférence |
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| Notes |
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Approuvé |
pas de |
| Numéro d'Appel |
MARBEC @ alain.herve @ |
collection |
2071 |
| Lien permanent pour cet enregistrement |
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| Auteur |
Fiandrino, A.; Ouisse, V.; Dumas, F.; Lagarde, F.; Pete, R.; Malet, N.; Le Noc, S.; de Wit, R. |
| Titre |
Spatial patterns in coastal lagoons related to the hydrodynamics of seawater intrusion |
Type |
Article scientifique |
| Année |
2017 |
Publication |
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Revue Abrégée |
Mar. Pollut. Bull. |
| Volume |
119 |
Numéro |
1 |
Pages |
132-144 |
| Mots-Clés |
bay; confinement; estuary; Hydromorphological zonations; Mediterranean coastal lagoons; Mixing efficiency; model performance; Numerical model; sparus-aurata; Transport timescale; transport time scales; ulva rigida; venice lagoon; Water renewal; water renewal timescales; wind-driven circulation |
| Résumé |
Marine intrusion was simulated in a choked and in a restricted coastal lagoon by using a 3D-hydrodynamic model. To study the spatiotemporal progression of seawater intrusion and its mixing efficiency with lagoon waters we define Marine Mixed Volume (V-MM) as a new hydrodynamic indicator. Spatial patterns in both lagoons were described by studying the time series and maps of VMM taking into account the meteorological conditions encountered during a water year. The patterns comprised well-mixed zones (WMZ) and physical barrier zones (PBZ) that act as hydrodynamic boundaries. The choked Bages-Sigean lagoon comprises four sub-basins: a PBZ at the inlet, and two WMZ's separated by another PBZ corresponding to a constriction zone. The volumes of the PBZ were 2.1 and 5.4 millions m(3) with characteristic mixing timescale of 68 and 84 days, respectively. The WMZ were 123 and 433 millions m(3) with characteristics mixing timescale of 70 and 39 days, respectively. (C) 2017 Elsevier Ltd. All rights reserved. |
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| Auteur institutionnel |
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Thèse |
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Lieu de Publication |
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Éditeur |
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| Langue |
English |
Langue du Résumé |
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Titre Original |
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| Éditeur de collection |
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Titre de collection |
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Titre de collection Abrégé |
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| Volume de collection |
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Numéro de collection |
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Edition |
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| ISSN |
0025-326x |
ISBN |
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Médium |
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Expédition |
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Conférence |
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| Notes |
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Approuvé |
pas de |
| Numéro d'Appel |
MARBEC @ alain.herve @ |
collection |
2181 |
| Lien permanent pour cet enregistrement |
