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1 February 2012 Variation of Calcium Levels in the Tissues and Hemolymph of Litopenaeus vannamei at Various Molting Stages and Salinities
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Abstract

We measured concentrations of Ca2 in tissues (hemolymph, hepatopancreas, cuticle, and muscle) of the whiteleg shrimp Litopenaeus vannamei (Boone, 1931) and recorded changes in tissue calcium levels at molting stages and different salinities. Calcium in tissues varied significantly with molting stage (p < 0.05). Salinity also affected Ca2 concentrations in tissues (p < 0.05). The highest Ca2 concentrations were found in the cuticle, followed by the hepatopancreas. Ratios of Ca2 /Na in tissues (except for muscle) varied with the molting stage and were higher in 4 g L-1 than in other salinities. Calcium entering the shrimp may initially be mineralized in the cuticle or stored in the hemolymph and hepatopancreas, after which it is released to support mineralization in the post-molt period. Muscles may take part in the growth of L. vannamei by storing calcium during the molting cycle.

© The Crustacean Society, 2012.
Chun-Huei Li and Sha-Yen Cheng "Variation of Calcium Levels in the Tissues and Hemolymph of Litopenaeus vannamei at Various Molting Stages and Salinities," Journal of Crustacean Biology 32(1), 101-108, (1 February 2012). https://doi.org/10.1163/193724011X615370
Received: 20 October 2010; Accepted: 1 May 2011; Published: 1 February 2012
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