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| Anttila, Katja; Mauduit, Florian; Le Floch, Stephane; Claireaux, Guy; Nikinmaa, Mikko. |
| Oil spills pose a threat to aquatic organisms. However, the physiological effects of crude oil on cardiac function and on thermal tolerance of juvenile fish are still poorly understood. Consequently, in this paper, we will present results of two separate experiments where we exposed juvenile rainbow trout and European sea bass to crude oil and made cardiac thermal tolerances and maximum heart rate (fHmax) measurements after 1 week (rainbow trout) and 6-month recovery (sea bass). In both species, the fHmax was lower in crude oil-exposed fish than in the control ones at temperatures below the optimum but this difference disappeared at higher temperatures. More importantly, the oil-exposed fish had significantly higher Arrhenius break point temperature for... |
| Tipo: Text |
Palavras-chave: Arrhenius break point temperature; Critical thermalmaximum; CTMAX; Fish; Heart rate; Oil spill; PAH. |
| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00391/50271/50970.pdf |
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| Zhang, Yangfan; Timmerhaus, Gerrit; Anttila, Katja; Mauduit, Florian; Jorgensen, Sven Martin; Kristensen, Torstein; Claireaux, Guy; Takle, Harald; Farrell, Anthony P.. |
| Commercially selective breeding of Atlantic salmon (Salmo salar) primarily for rapid growth may compromise cardiorespiratory robustness and its related phenotypes. Therefore, a suite of respiratory indices was used to evaluate aerobic capacity and hypoxia tolerance to test the hypothesis that exercise training can improve the athletic robustness in both domesticated and wild strains of Atlantic salmon, but with the domesticated strain having a less cardiorespiratory plasticity and a lower athletic robustness than the wild strain. We also tested a second hypothesis that a constant acceleration screening protocol should segregate fish according to athletic robustness based on their swimming ability. These hypotheses were tested with parr from Bolaks... |
| Tipo: Text |
Palavras-chave: Athletic robustness; Atlantic salmon; Domestication; Exercise training; Hypoxia tolerance; Respiratory performance. |
| Ano: 2016 |
URL: https://archimer.ifremer.fr/doc/00334/44518/44214.pdf |
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| Crespel, Amélie; Anttila, Katja; Lelièvre, Pernelle; Quazuguel, Patrick; Le Bayon, Nicolas; Zambonino-infante, Jose-luis; Chabot, Denis; Claireaux, Guy. |
| The accumulation of CO2 in the atmosphere and resulting ocean acidification represent a threat to marine ecosystems. While acid–base regulatory capacity is well developed in marine fish, allowing compensation of extra-cellular pH during short-term hypercapnia, the possible energetic costs of such regulation during long-term exposure remain to be established. In this study, juvenile European sea bass (Dicentrarchus labrax) were exposed from 2 days post-hatching to three different ocean acidification scenarios: control (present condition, PCO2 = 520 µatm, pH 7.9), moderate acidification (PCO2 = 950 µatm, pH 7.7), and high acidification (PCO2 = 1490 µatm, pH 7.5). After 1.5 years of exposure, fish aerobic metabolic capacities, as well as elements of their... |
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| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00512/62340/66604.pdf |
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