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| Leitwein, Maeva; Laporte, Martin; Le Luyer, Jeremy; Mohns, Kayla; Normandeau, Eric; Withler, Ruth; Bernatchez, Louis. |
| Human activities induce direct or indirect selection pressure on natural population and may ultimately affect population’s integrity. While numerous conservation programs aimed to minimize human‐induced genomic variation, human‐induced environmental variation may generate epigenomic variation potentially affecting fitness through phenotypic modifications. Major questions remain pertaining to how much epigenomic variation arises from environmental heterogeneity, whether this variation can persist throughout life, and whether it can be transmitted across generations. We performed whole genome bisulfite sequencing (WGBS) on the sperm of genetically indistinguishable hatchery and wild born migrating adults of Coho salmon (Oncorhynchus kisutch) from two... |
| Tipo: Text |
Palavras-chave: Conservation; Developmental plasticity; Epigenomic; Fisheries; Fitness; Hatchery; Salmonid. |
| Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00688/79977/82923.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; 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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