NDLI: Changes in free amino acid profile of red snapper Lutjanus campechanus, eggs, and developing larvae

Content Provider	Springer Nature Link
Author	Hastey, R. P. Phelps, R. P. Davis, D. A. Cummins, K. A.
Copyright Year	2009
Abstract	The free amino acids (FAA) profile was determined for newly fertilized eggs and resultant larvae from wild-caught red snapper Lutjanus campechanus induced to spawn with hCG. Yolk sac and oil globule volumes of eggs and larvae were monitored over time from digital photographs. FAA profiles of the eggs and larvae were measured in picomoles (pmol) of FAA/mg of eggs by HPLC. Newly fertilized eggs had a mean total FAA content of 21.72 ± 3.55 nmoles/egg (92.81 ± 9.71 nmoles/mg eggs). Leucine, valine, lysine, and isoleucine were the most abundant essential FAA comprising 35.9% of the total FAA. Alanine, serine, asparagine, and glycine were the most abundant non-essential FAA comprising 34.2% of the total FAA. At 24 h post-hatch (hph) the mean total FAA had decreased by 81% since egg fertilization. The bulk of the FAA decrease was between the time of hatch and 12 hph. Only 8.5 ± 1.5% of the initial concentration in fertilized eggs of isoleucine, 9.7 ± 2.5% of arginine, and 9.9 ± 2.0% of threonine remained at 12 hph. Among the non-essential FAA, alanine dropped the most by 12 hph with 4.6% of the concentration found in a recently fertilized egg remaining, while cysteine had increased 254.7 ± 26.2%. The yolk sac volume decreased rapidly in the first 12 hph and was further reduced 77.0 ± 2.5% from 12 to 24 hph. The oil globule depletion rate was a more linear decline from fertilized egg to 36 hph.
Starting Page	473
Ending Page	481
Page Count	9
File Format	PDF
ISSN	09201742
Journal	Fish Physiology and Biochemistry
Volume Number	36
Issue Number	3
e-ISSN	15735168
Language	English
Publisher	Springer Netherlands
Publisher Date	2009-04-03
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Free amino acids Red snapper, Lutjanus campechanus Marine fish eggs Marine fish larva Aquaculture Zoology Animal Biochemistry Animal Anatomy / Morphology / Histology Animal Physiology Freshwater & Marine Ecology
Content Type	Text
Resource Type	Article
Subject	Physiology Medicine Biochemistry Aquatic Science

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