Changes in amino acid and fatty acid composition during early development in cobia (Rachycentron canadum)

An estimation of the utilization of endogenous nutrients from the yolk sac that occurs during embryonic and early larval development can be a valuable approach to studying the nutritional requirements of fish larvae. In this study, fertilized eggs, embryos (before the membrane, 24 hours after fertil...

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Bibliographic Details
Published in:Frontiers in Marine Science 2022-09, Vol.9
Main Authors: Huang, Jian-sheng, Li, Rong-xin, Xie, Rui-tao, Chen, You-ming, Zhang, Jian-dong, Amenyogbe, Eric, Chen, Gang
Format: Article
Language:English
Subjects:
amino acids
embryos
fatty acids
fertilized eggs
larvae
Rachycentron canadum
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Summary:An estimation of the utilization of endogenous nutrients from the yolk sac that occurs during embryonic and early larval development can be a valuable approach to studying the nutritional requirements of fish larvae. In this study, fertilized eggs, embryos (before the membrane, 24 hours after fertilization), newly-hatched larvae (0-d-old), and open-mouthed larvae (3-day-old, unfed rotifers) samples of cobia ( Rachycentron canadum ) were collected to determine the amino acid and fatty acid profiles. Crude protein composition varies significantly for cobia during the different stages of development. The total amino acids, except for lysine(Lys), histidine (His), methionine(Met), serine(Ser), and glycine(Gly), had no significant change in the early development stage ( P > 0.05); the content of other six essential amino acids (EAA) and six non-essential amino acids (NEAA) was consistent with the changing trend of total essential amino acid. From hatching newly hatched larvae to open-mouthed larvae, except for Leu, Phe and Ser, decreased significantly ( P
ISSN:2296-7745
2296-7745
DOI:10.3389/fmars.2022.995616