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GROWTH AND VARIATIONS IN LIPID CLASS AND FATTY ACID COMPOSITION DURING LARVAL DEVELOPMENT OF THE STONE CRAB, MENIPPE ADINA WILLIAMS AND FELDER, 1986.
Citation:
Nates, S. F. AND C L. McKenney Jr. GROWTH AND VARIATIONS IN LIPID CLASS AND FATTY ACID COMPOSITION DURING LARVAL DEVELOPMENT OF THE STONE CRAB, MENIPPE ADINA WILLIAMS AND FELDER, 1986. INVERTEBRATE REPRODUCTION AND DEVELOPMENT 37(2):157-165, (2000).
Description:
Larval development in decapod crustaceans is marked by variable growth patterns and changes in weight and biochemical composition. Larvae of the stone crab, Menippe adina, were mass-reared under laboratory conditions (28?C; 20o/ooS) from hatching to the megalopa stage. Growth in M. adina is exponential throughout the zoeal stages (y=10.395e01592x, R2=0.98). Dry weight increased by 16-fold from the first to fifth zoeal stage (ZI-ZV), and by day 22, the average weight for megalopae was 272.5?48.6 ?g. Iatroscan lipid class analysis revealed that polar lipids (>64%) and neutral lipids of which steryl esters (>20%) were dominant, represent the major lipid classes in larvae at every stage. Free fatty acids and free sterols were present in small amounts. Triacylglycerols represented on average 3% of total lipids. Total lipids of zoeae and megalopae contained substantial concentrations of palmitic (16:0), stearic (18:0), eicosapentaenoic (20:5w3), oleic (18:1w9) and arachidonic (20:4w6). Proximate biochemical composition revealed conspicuous variations during metamorphosis that appear cyclic in nature.