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Lipid Nutrition of the Spiny Lobster Panulirus japonicus (Decapoda, Palinuridae): A Review

Akio Kanazawa and Shunsuke Koshio
Crustaceana
Vol. 67, No. 2, Proceedings of the Fourth International Workshop on Lobster Biology and Management, 1993 (Sep., 1994), pp. 226-232
Published by: Brill
Stable URL: http://www.jstor.org/stable/20104982
Page Count: 7
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Lipid Nutrition of the Spiny Lobster Panulirus japonicus (Decapoda, Palinuridae): A Review
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Abstract

The nutritional research on crustaceans such as the American lobster Homarus americanus and the prawn Penaeus japonicus has been reviewed by several workers. However, nutritional studies on Palinuridae are very scarce, particularly on the larval stages that are difficult to rear under artificial conditions. In the present paper, lipid nutrition of the spiny lobster, Panulirus japonicus, is reviewed and compared with that of American lobsters or prawns. Crustaceans have been shown to require lipids such as essential fatty acids, phospholipids and sterols. We investigated tissue uptake of [${}^{14}\text{C}$] n-3 highly unsaturated fatty acids for the spiny lobster using [${}^{14}\text{C}$] labeled eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). The results demonstrated that both [${}^{14}\text{C}$] EPA and [${}^{14}\text{C}$] DHA in the muscle and hepatopancreas were incorporated at higher levels (76 to 91% of total radioactive lipids) in phospholipids such as phosphatidylcholine and phosphatidylinositol than in neutral lipids (9 to 24% of total radioactive lipids). It was found that the ability for the bioconversion of EPA and DHA to other fatty acids is probably lacking in spiny lobsters. These results agree with those of studies on other Crustacea. /// Les recherches sur la nutrition des crustacés tels que le homard américain Homarus americanus et la crevette Penaeus japonicus ont été passées en revue par plusieurs auteurs. Cependant, les études sur la nutrition des Palinuridae sont très rares, en particulier chez les stades larvaires qui sont difficiles à élever sous des conditions artificielles. Dans ce travail, la nutrition lipidique de la langouste Panulirus japonicus est examinée et comparée avec celle des homards américains et des crevettes. On a montré que les crustacés avaient besoin de lipides tels que des acides gras essentiels, des phospholipides et des stérols. Nous avons testé l'absorption par les tissus d'acides gras [${}^{14}\text{C}$] n-3 hautement insaturés chez la langouste en utilisant l'acide eicosapentaenoique (EPA) et l'acide docosahexaenoique (DHA) marqués au [${}^{14}\text{C}$]. Les résultats obtenus ont démontré que dans le muscle et l'hépatopancréAs, le [${}^{14}\text{C}$]EPA et le [${}^{14}\text{C}$]DHA étaient tous deux incorporés à des niveaux plus élevés (76 à 91% des lipides radioactifs totaux) dans les phospholipides tels que phosphatidylcholine et phosphatidylinositol que dans les lipides neutres (9 à 24% des lipides totaux radioactifs). On a trouvé que la capacité à la bioconversion de EPA et DHA en d'autres acides gras est probablement inexistante chez la langouste. Ces résultats sont en accord avec ceux obtenus chez d'autres crustacés.

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