Changes in
the taurine content during the early growth stages of artificially produced
yellowtail compared with wild fish
H. Matsunari, T. Takeuchi, Y. Murata, M. Takahashi,
N. Ishibashi, H. Chuda, T. Arakawa-2003
Nippon Suisan Gakkaishi, 69(5): 757-762
(from ISI Current Contents)
Abstract:
This experiment was conducted to investigate the changes in taurine content
during the development of artificially produced yellowtail Seriola
quinqeradiata larvae and juveniles. Besides this, the taurine content of
wild caught and reared yellowtail was compared. We analyzed the free amino
acids content in larvae and juveniles produced at the Goto Station of Japan
Sea-Farming Association and Nagasaki Prefecture Institute of Fisheries (TL,
4.2-186.8 mm) and juveniles caught from the coastal area of Nagasaki
Prefecture (TL, 29.7-179.0 mm).
The content of most free amino acids such as lysine,
leucine, isoleucine, alanine decreased between the fertilized egg stage and
open-mouth stage, with the exception of taurine in artificially reared fish.
The taurine content in the whole body of the artificially reared larvae
decreased rapidly during the rotifer feeding. The amount of taurine in the
wild fish was higher compared to the cultured fish. These results reveal
that taurine has an important role compared to other free amino acids,
suggesting live food and diet used for yellowtail culture would not satisfy
the taurine requirement of yellowtail.
(Tokyo Univ. Fi sheries, Dept. Aquat. Biosci., Tokyo 1088477, Japan, e-mail: take@tokyo-u-fish.ac.jp)