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Fish Physiol Biochem. 2010 Mar;36(1):29-37. doi: 10.1007/s10695-008-9276-4. Epub 2008 Nov 2.

Development of digestive enzyme activity in larvae of spotted sand bass Paralabrax maculatofasciatus II: Electrophoretic analysis.

Author information

1
DACBIOL Laboratorio de Acuacultura, Universidad Juárez Autónoma de Tabasco, Carretera Villahermosa Cárdenas Km 0.5, 86139 Villahermosa, Tabasco, Mexico. alvarez_alfonso@hotmail.com

Abstract

The activities of several digestive enzymes during larval development of the spotted sand bass (Paralabrax maculatofasciatus) were evaluated using electrophoretic techniques. The results show the presence of three isoforms of alkaline protease from day 2 after hatching (ah) and the early appearance of one pepsin-like band from day 12 ah onwards. In addition, two lipase bands first appeared on day 2 ah, and there was a change in the molecular weight of one band from day 15 ah onwards. Several alpha-amylase isoforms were observed from hatching up to day 5 ah. These results indicate that the important digestive enzymes develop rapidly in these larvae, supporting the possibility of early weaning at day 12 ah using artificial diets.

PMID:
18979220
DOI:
10.1007/s10695-008-9276-4
[Indexed for MEDLINE]

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