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High stocking density induces crowding stress and affects amino acid metabolism in Senegalese sole Solea senegalensis (Kaup 1858) juveniles
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Orientador(es)
Resumo(s)
Fish held at high stocking densities are generally
exposed to chronic stress situations that impose severe
energy demands and may predispose the ¢sh to infection. Senegalese sole Solea senegalensis (Kaup) juveniles (78.8 18.9 g body weight) were maintained at
low (LSD; 4 kg m2 at the end of the experiment),
medium (MSD; 9 kg m2
) and high (HSD;14 kg m2
)
stocking densities during a period of 63 days.
Although disease outbreaks were observed in ¢sh
reared at HSD, growth and food consumption did not
vary among di¡erent treatments. Results from plasma
cortisol and free amino acids (FAAs) showed signi¢-
cant di¡erences among di¡erent rearing densities
pointing to HSD as stressful rearing condition.
Descrição
Palavras-chave
Amino acids Stress response Cortisol Senegalese sole Glucose Density
Contexto Educativo
Citação
Costas, B.; Aragão, C.; Mancera, J.M.; Dinis, M.T.; Conceição, L.E.C.; Refojos, B.C.High stocking density induces crowding stress and affects amino acid metabolism in Senegalese sole Solea senegalensis (Kaup 1858) juveniles, Aquaculture Research, 39, 1, 1-9, 2008