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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 97, No. 2, 2002, pp. 431-433
Bioline Code: oc02083
Full paper language: English
Document type: Research Article
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 97, No. 2, 2002, pp. 431-433

 en SHORT COMMUNICATION - The Histopathology of the Infection of Tilapia rendalli check for this species in other resources and Hypostomus regani check for this species in other resources (Osteichthyes) by Lasidium Larvae of Anodontites trapesialis check for this species in other resources (Mollusca, Bivalvia)
Ângela Teresa Silva-Souza & Jorge C Eiras

Abstract

It is described the histopathology of the infection of Tilapia rendalli check for this species in other resources (Osteichthyes, Perciformes, Cichlidae) and Hypostomus regani check for this species in other resources (Osteichthyes, Siluriformes, Loricariidae) by lasidium larvae of Anodontites trapesialis check for this species in other resources (Mollusca, Bivalvia, Mycetopodidae). The larvae were encysted within the epidermis of the host, being surrounded by a thin hyaline membrane, 3-6 μm thick, of parasite origin. A proliferative host cell reaction did not occur. The histopathology of the infection shows that the lesions induced by the parasites are minimal. However, the numerous small lesions produced by the release of the larvae may provide optimal conditions for the infection by opportunistic pathogens, namely fungus, which may eventually cause the death of the host.

Keywords
fish - bivalve larvae - parasitism

 
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