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Occurrence and histopathological effects of Monstrilla sp. (Copepoda: Monstrilloida) and other parasites in the brown mussel Perna perna from Brazil

Published online by Cambridge University Press:  11 December 2009

Eduardo Suárez-Morales
Affiliation:
El Colegio de la Frontera Sur (ECOSUR), Avenida Centenario Km 5.5, Chetumal, Quintana Roo 77014, Mexico
Marcos Paiva Scardua
Affiliation:
Laboratório de Imunologia Aplicada à Aquicultura, Departamento de Biologia Celular, Embriologia e Genética, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, 88040-900, Florianópolis, SC, Brazil
Patricia Mirella da Silva*
Affiliation:
Laboratório de Imunologia Aplicada à Aquicultura, Departamento de Biologia Celular, Embriologia e Genética, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, 88040-900, Florianópolis, SC, Brazil
*
Correspondence should be addressed to: P. Mirella da Silva, Universidade Federal de Sergipe, Núcleo de Engenharia de Pesca, Rua Mal. Rondon s/n, Cidade Universitária Prof. José Aloísio de Campos, Jardim Rosa Elze, 49100-000, Aracaju, SE, Brazil email: [email protected]

Abstract

During a parasitological survey of the brown mussel Perna perna from highly productive culture fields in the southern sector of Brazil, monstrilloid copepods were discovered in the mantle of this mytilid bivalve. Numerous specimens of endoparasitic copepods were found within nodules in the mantle of the host; they belong to an undetermined species of Monstrilla. Monstrilloid copepods were known to be endoparasitic in polychaetes and in one species of prosobranch mollusc only; their occurrence as parasites of bivalve molluscs has not been previously documented. This is also the first record of these crustaceans infecting commercial molluscs. The prevalence of Monstrilla sp. infecting the brown mussel was 25.6%. At the histological level, it was observed that the larvae induced a strong haemocytic infiltration resulting from the complete larval encapsulation within the host mantle. The effect of this monstrilloid in the cultured populations of P. perna deserves further study.

Type
Research Article
Copyright
Copyright © Marine Biological Association of the United Kingdom 2009

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