Physiological response in different strains of sea bass (Dicentrarchus labrax): Swimming and aerobic metabolic capacities
Fecha
2011Autor
Luna-Acosta, A.
Lefrançois, C.
Millot, S.
Chatain, B.
Bégout, M.-L.
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Resumen
Sea bass (Dicentrarchus labrax) is one of the major marine species cultivated in Southern Europe. An ongoing
selection programme based on production traits has produced the first generation of different strains issued
from wild, domesticated or selected sires. Inter-strain differences exist upon many fish species. To test if that
was the case in these strains of sea bass, we measured individual oxygen consumption (MO2) in relation to
swimming speed, critical swimming speed, standard metabolic rate, active metabolic rate, aerobic metabolic
scope, net cost of transport and excess post-exercise oxygen consumption. MO2 associated to swimming effort
tended to be lower in the Wild strain, when compared to Domesticated and Selected strains. Nevertheless, no
significant (pN0.05) inter-strain differences were observed for none of the physiological traits listed above.
These results suggest that (i) the selection process, based on production traits, respects functional integrity in
the three strains of sea bass, and that (ii) this species possesses a large physiological plasticity. Nevertheless,
before validating this selection framework, studies should be done in order to compare other genetic,
physiological and behavioural traits in other strains issued from more than one generation of selection.
Palabras clave
Respiratory metabolism; Swimming; Selection; Domestication; AquacultureEnlace al recurso
https://doi.org/10.1016/j.aquaculture.2011.03.004Colecciones
- Año 2011 [102]
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