GABA, 5-HT and amino acids in the rotifers Brachionus plicatilis and Brachionus rotundiformis
Abstract
γ-Aminobutyric acid (GABA) and 5-hydroxytryptamine (5-HT) have been shown to increase the reproduction of the Brachionus plicatilis (NH3L strain). In the present study, the endogenous presence of GABA and 5-HT in the rotifers B. plicatilis (NH3L and Kamiura strains) and Brachionus rotundiformis (Langkawi strain) were confirmed by dot blot immunoassay and high-performance liquid chromatography (HPLC). HPLC showed that GABA and 5-HT concentrations in the three rotifer strains range from 71 to 188 pmol/mg and from 12 to 64 pmol/mg, respectively. A total of 33 amino acids were also detected in B. plicatilis and B. rotundiformis, with glutamic acid, serine, glycine, taurine, threonine, alanine, arginine, proline, valine and isoleucine in high concentrations relative to other amino acids.
Citation
Gallardo, W. G., Hagiwara, A., Hara, K., Soyano, K., & Snell, T. W. (2000). GABA, 5-HT and amino acids in the rotifers Brachionus plicatilis and Brachionus rotundiformis.Publisher
ElsevierSubject
Acknowledgment/Sponsorship
This study was supported by Grant-in-Aid for Scientific Research from the Ministry of Education, Science and Culture of Japan (No. 10660187) and Integrated Research Program for Effects of Endocrine Disrupters on Agriculture, Forestry, and Fisheries and their Action Mechanisms on Domestic Animals and Fishes (ED-99-II-3-1).
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Conference paper
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Series: Aquaculture extension manual; No. 60A 32-page manual with topics on the biology and cultivation techniques of zooplankton.
