Abstract: The fatty acid profile of Onychocamptus mohammed (Blanchard and Richard 1891) from laboratory culture and the wild species from the habitat was ascertained using gas chromatography–mass spectrometry (GC-MS) and compared. The fatty acids detected in this experiment have the carbon number ranging between C14-25. The wild sample showed the presence of 24 fatty acids in which the highest percentage was shown by nonadecanoic acid, methyl ester (2.25 ± 0.27%) and the lowest was shown by 15-tetracosenoic acid, methyl ester, (Z)- (0.04 ± 0.01 %); tetracosanoic acid, methyl ester (0.04 ± 0.02 %) and 5,8,11,14,17-eicosapentaenoic acid, methyl ester, (all-Z)- (0.04 ± 0.05 %). In cultured sample, 26 fatty acids were present and the highest percentage was shown by methyl hexadec-9-enoate (2.21 ± 0.03 %) and the least percentage was shown by heptadecanoic acid, methyl ester (0.05 ± 0.02 %) and heptadecanoic acid,16-methyl-, methyl ester (0.05 ± 0.01 %). The essential fatty acids such as docosahexaenoic acid (1.34 ± 0.19 %) and eicosapentaenoic acid (1.85 ± 0.01 %) were present in desired quantities in cultured sample and this ensures that the harpacticoid copepod, O. mohammed can serve as a live feed for developing shell fish and fin fish larvae.
Keywords: fatty acid, live food, harpacticoid copepod.
Title: Comparative fatty acid analysis of wild and cultured freshwater harpacticoid copepod – Onychocamptus mohammed (Blanchard and Richard, 1891)
Author: Mohammed Farzana Yasmeen, Abdus Saboor
International Journal of Life Sciences Research
ISSN 2348-313X (Print), ISSN 2348-3148 (online)
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