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Assessment of non-lethal markers for early detection of precocious puberty in sea bass (Dicentrarchus labrax) males

AuthorsAmeur, Z.; Carrillo, Manuel ; Zanuy, Silvia ; Gómez, Ana
Issue Date14-Oct-2014
CitationAquaculture Europe (2014)
AbstractPuberty comprises the developmental period in which an immature juvenile becomes capable of sexual reproduction for the first time. This process involves functional activation of the brain-pituitary-gonad axis (Taranger et al., 2010). Under farming conditions, the sea bass populations show biased sex ratios with more than 70% of males. About 20 to 30% of these males mature precociously in the first year of life, instead of the second (Carrillo et al., 1995). These precocious males show lower growth rate than the non-precocious during their second year (Felip et al., 2006), before reaching marketable size, resulting in economic loses to the fish farmer. The present study aimed to define non-lethal markers for early prediction of precocity rates in a population, helping to the management of stocks, and as a knowledge base to understand which are the physical/physiological conditions that lead a fish to mature precociously.
DescriptionTrabajo presentado en Aquaculture Europe 2014, celebrado en San Sebastián (España) del 4 al 17 de octubre de 2014
Appears in Collections:(IATS) Comunicaciones congresos
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