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Ontogenetic Development of Digestive Enzymes in Orange-Spotted Grouper (Epinephelus coioides, Hamilton, 1822) Larvae

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Title: Ontogenetic Development of Digestive Enzymes in Orange-Spotted Grouper (Epinephelus coioides, Hamilton, 1822) Larvae
Authors: Huayang Guo
Jianzhu Li
Zhenhua Ma
Jiasong Zhang
Panlong Zhe
show 1 moreDachuan Cheng
show less
Keywords: ontogenetic development
digestive enzyme
enzymatic assay
larvae
Epinephelus coioides
LC Subject Headings: Fish culture--Israel.
Fish culture.
Issue Date: 2016
Abstract: The digestive physiology of orange-spotted grouper (Epinephelus coioides) was studied by assessing the specific and total activities of alkaline phosphatase, amylase, lipase, chymotrypsin, and trypsin, from hatching to 34 days post-hatching (DPH). From the onset of exogenous feeding, total alkaline phosphatase, amylase, lipase, and chymotrypsin activity fluctuated then sharply increased from 18 to 34 DPH. In contrast to other enzymes, the specific and total activity of trypsin remained at a low level from 1-26 DPH, and reached the maximum on 30 DPH. Digestive enzymes activity indicated that orange-spotted grouper were able to digest proteins, lipids, and carbohydrates at an early developmental stage. Results from the present study will improve understanding of the ontogeny of orange-spotted grouper during the larval stage, and provide a guide to hatchery feeding of this economically important fish.
Pages/Duration: 11 pages
URI/DOI: http://hdl.handle.net/10524/54962
ISSN: 0792-156X
Appears in Collections:Volume 68, 2016



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