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1 November 2009 Physiological and Biochemical Variations during the Molt Cycle in Juvenile Litopenaeus vannamei under Laboratory Conditions
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Abstract

Biochemical changes, specifically in hemocyanin and glucose concentrations in hemolymph, glycogen in the digestive gland, were studied throughout the molt cycle in juveniles of Litopenaeus vannamei in a high salinity condition (36), and related to variations in the osmotic capacity of organisms. Increasing hemolymph volume before molting modifies circulating glucose and hemocyanin concentrations acting on the osmotic capacity. Variations in glucose concentrations are indicators of differential energy requirements throughout the molt cycle. Hemocyanin was used as an indirect indicator of the energy consumed by shrimp in various molt processes that affect the osmotic capacity. The co-variability of these metabolites is the result of the biochemical adaptations displayed by shrimp to maintain homeostasis. Their relation to changes in the osmotic capacity is given as a model to understand and predict events associated with molting under hypo-osmotic conditions.

Carmen Galindo, Gabriela Gaxiola, Gérard Cuzon, and Xavier Chiappa-Carrara "Physiological and Biochemical Variations during the Molt Cycle in Juvenile Litopenaeus vannamei under Laboratory Conditions," Journal of Crustacean Biology 29(4), 544-549, (1 November 2009). https://doi.org/10.1651/08-3094.1
Received: 20 September 2008; Accepted: 1 March 2009; Published: 1 November 2009
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