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Biochemical composition and function of jelly masses of Marphysa gravelyi (Polychaeta: Eunicidae) from Pulicat Lake, India

Published online by Cambridge University Press:  23 March 2017

E. Malathi ,
Collette M Juliana  and
Priscilla A Lyndsay
E. Malathi*
Affiliation:
Department of Zoology, Queen Mary's College, Chennai, India
Collette M Juliana
Affiliation:
Department of Zoology, Queen Mary's College, Chennai, India
Priscilla A Lyndsay
Affiliation:
Department of Zoology, Queen Mary's College, Chennai, India
*
Correspondence should be addressed to: E. Malathi, Department of Zoology, Queen Mary's College, Chennai, India email: [email protected]
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Abstract

Eggs of Marphysa gravelyi are spawned in gelatinous masses and the developing larvae are harboured in them until they are ready to undergo settlement. In order to understand the function of the jelly mass, morphometric, histochemical, biochemical and antimicrobial analyses were performed. The observations indicate the fibrous jelly mass is composed of carbohydrate, protein and lipid, and size is correlated to number of eggs present within. Extracts from the jelly mass of Marphysa gravelyi exhibit inhibitory activity against Escherichia coli, Vibrio vulnificus and Candida albicans but no activity was seen against seven other microorganisms tested. The results show that the function of the jelly mass is to nourish the developing embryos, protect against desiccation and predation from macrofauna, and most importantly prevent the dispersal of the juveniles from the desirable habitat.

Keywords

Marphysa gravelyiPolychaetajelly massmorphometricsbiochemical compositionantimicrobial properties
Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 97 , Special Issue 5: Proceedings of the 12th International Polychaete Conference Amgueddfa Cymru - National Museum Wales Cardiff, Wales, UK, 1-5 August 2016 , August 2017 , pp. 1135 - 1141
Copyright
Copyright © Marine Biological Association of the United Kingdom 2017 

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