Data/hora: 09/06/2024 08:41:54

Provedor de dados: | 5
País: | France
Título: | Hypoxia tolerance of common sole juveniles depends on dietary regime and temperature at the larval stage: evidence for environmental conditioning
Autores: | Zambonino, Jose-luis; Claireaux, Guy; Ernande, Bruno; Quazuguel, Patrick; Severe, Armelle; Huelvan, Christine; Mazurais, David.
Data: | 2013-05
Ano: | 2013
Palavras-chave: | Fish; Environmental programming; Climate change; Hypoxia; Nutrition.
Resumo: | An individual's environmental history may have delayed effects on its physiology and life history at later stages in life because of irreversible plastic responses of early ontogenesis to environmental conditions. We chose a marine fish, the common sole, as a model species to study these effects, because it inhabits shallow marine areas highly exposed to environmental changes. We tested whether temperature and trophic conditions experienced during the larval stage had delayed effects on life-history traits and resistance to hypoxia at the juvenile stage. We thus examined the combined effect of global warming and hypoxia in coastal waters, which are potential stressors to many estuarine and coastal marine fishes. Elevated temperature and better trophic conditions had a positive effect on larval growth and developmental rates; warmer larval temperature had a delayed positive effect on body mass and resistance to hypoxia at the juvenile stage. The latter suggests a lower oxygen demand of individuals that had experienced elevated temperatures during larval stages. We hypothesize that an irreversible plastic response to temperature occurred during early ontogeny that allowed adaptive regulation of metabolic rates and/or oxygen demand with long-lasting effects. These results could deeply affect predictions about impacts of global warming and eutrophication on marine organisms.
Tipo: | Text
Idioma: | Inglês

Identificador:

http://archimer.ifremer.fr/doc/00127/23858/21810.pdf

DOI:10.1098/rspb.2012.3022

Editor: | Royal Society of London
Relação: | http://archimer.ifremer.fr/doc/00127/23858/
Formato: | application/pdf
Fonte: | Proceedings of the Royal society of London (B) (Biological sciences) (0962-8452) (Royal Society of London), 2013-05 , Vol. 280 , N. 1758 , P. 1-9
Fonte: | 2013 The Author(s) Published by the Royal Society. All rights reserved.