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| Cadiz, Laura; Ernande, Bruno; Quazuguel, Patrick; Servili, Arianna; Zambonino-infante, Jose-luis; Mazurais, David. |
| Environmental conditions, to which organisms are exposed during all their life, may cause possible adaptive responses with consequences in their subsequent life-history trajectory. The objective of this study was to investigate whether ecologically relevant combinations of hypoxia (40% and 100% air saturation) and temperature (15° and 20 °C), occurring during the larval period of European sea bass larvae (Dicentrarchus labrax), could have long-lasting impacts on the physiology of resulting juveniles. Hypoxic challenge tests were performed over one year to give an integrative evaluation of physiological performance. We revealed that juvenile performance was negatively impacted by hypoxia but not by the thermal conditions experienced at larval stage. This... |
| Tipo: Text |
Palavras-chave: Hypoxia; Temperature; Developmental plasticity; Carry-over effects; Opercular malformation; European sea bass. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00434/54606/55988.pdf |
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| Cadiz, Laura; Zambonino-infante, Jose-luis; Quazuguel, Patrick; Madec, Lauriane; Le Delliou, Herve; Mazurais, David. |
| Several physiological functions in fish are shaped by environmental stimuli received during early life. In particular, early-life hypoxia has been reported to have long-lasting effects on fish metabolism, with potential consequences for fish life history traits. In the present study, we examine whether the synergistic stressors hypoxia (40% and 100% air saturation) and temperature (15° and 20 °C), encountered during early life, could condition later metabolic response in European sea bass (Dicentrarchus labrax) juveniles. Growth rate and metabolic parameters related to carbohydrate and lipid metabolism in the liver were investigated at the juvenile stage under normoxic and chronic hypoxic conditions. Juvenile growth rates were significantly lower... |
| Tipo: Text |
Palavras-chave: Hypoxia; Developmental plasticity; Metabolism; European sea bass. |
| Ano: 2018 |
URL: http://archimer.ifremer.fr/doc/00404/51536/52126.pdf |
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| Cadiz, Laura; Servili, Arianna; Quazuguel, Patrick; Madec, Lauriane; Zambonino, Jose-luis; Mazurais, David. |
| European sea bass (Dicentrarchus labrax) inhabits coastal waters and may be exposed to hypoxia at different life stages, requiring physiological and behavioral adaptation. In the present study, we attempted to determine whether regulation of hemoglobin (Hb) gene expression plays a role in the physiological response to chronic moderate hypoxia in whole larvae and hematopoietic tissues (head kidney and spleen) of juveniles. We also tested the hypothesis that hypoxia exposure at the larval stage could induce a long-term effect on the regulation of Hb gene expression. For this purpose, D. labrax were exposed to a non-lethal hypoxic condition (40% air saturation) at the larval stage from 28 to 50 days post-hatching (dph) and/or at the juvenile stage from 196 to... |
| Tipo: Text |
Palavras-chave: Hypoxia; Hemoglobin; Early exposure; European sea bass. |
| Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00399/51039/51831.pdf |
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