Microbiological and chitinoclastic activities associated withPenaeus setiferus |
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| Authors: | Mary A Hood Samuel P Meyers |
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| Institution: | (1) Faculty of Biology, University of West Florida, 32504 Pensacola, Florida, USA;(2) Dept. Food Science, Louisiana State University, 70803 Baton Rouge, Louisiana, USA |
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| Abstract: | Analysis of microbiological and chitinase activities relative to the white shrimpPenaeus setiferus, and its chitinoclastic endosymbionts, have demonstrated the relevance of total chitinolytic processes in penaeid biology. Microorganisms may serve as a direct source of nutrients for the animal as well as in the elaboration of extracellularin situ chitinase enzymes. The enzyme produced by the predominant gut bacteria,Beneckea neptuna, is a moderately actively inducible chitinase while the shrimp has an indigenous constitutive chitinase and chitobiase system. Factors of temperature, pH, ion inhibition and reducing sugar ratios have been compared for the bacterial and animal enzymes. This dual enzyme system suggests that metabolic chitin transformation may play a vital role in crustacean metabolism. |
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