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Título: Metacercariae of Austrodiplostomum spp. (Digenea: Diplostomidae) infecting the eyes and brains of fish in Brazilian Amazon
Título(s) alternativo(s): Metacercaria de Austrodiplostomum spp. (Digenea: Diplostomidae) infectando olhos e cérebros de peixes na Amazônia Brasileira
Autor(es): Lima, Márcio Jonathan Soares
Veiga, Renato Pastor
Sousa, Luciclara Ferreira de
Santana, Maxwell Barbosa de
Oliveira, Marcos Sidney Brito
Tavares-Dias, Marcos
Corrêa, Lincoln Lima
Data do documento: 21-Out-2019
Resumo: The aim of this paper was to report the occurrence of Austrodiplostomum spp. in the eyes and brain of Acaronia nassa, Caquetaia spectabilis, Satanoperca acuticeps, Curimatella sp. and Crenicichla marmorata in a lake of the Amazon River system in the state of Pará (Brazil). Of 49 fish examined, 10.2% were parasitized by Austrodiplostomum spp. metacercariae, and A. nassa was the host with higher number of metacercariae. In five examined fish species, a total of 51 metacercariae were collected, with 45 found in the eyes and 6 in the cranial vault. In the eyes, the metacercariae were free and active in the vitreous humor, but no opacification was observed. In the brain, the metacercariae were also free and active, and located mainly below the encephalon, on the cranial floor, at the height of the ophthalmic lobes and near the optic nerve. In laboratory observations, however, the infected fish did not exhibit any behavioral disorders, and this may be related to the low level of parasitism. This was the first report of this digenean for C. spectabilis, S. acuticeps, Curimatella sp., C. marmorata and A. nassa.
Palavras-chave: Amazo
Digenea
Parasites; Freshwater fish
Citação: Lima, Márcio Jonathan Soares; Veiga, Renato Pastor; Sousa, Luciclara Ferreira de; Santana, Maxwell Barbosa de; Oliveira, Marcos Sidney Brito; Tavares-Dias,Marcos; Corrêa, Lincoln Lima. Metacercariae of Austrodiplostomum spp. (Digenea: Diplostomidae) infecting the eyes and brains of fish in Brazilian Amazon. Arquivos do Instituto Biológico. v. 86, e0932018, 2019.
ISSN: 1808-1657
Número DOI: 10.1590/1808-1657000932018
Idioma: en_US
Editora: Instituto Biológico
Local da Publicação: São Paulo
URI: http://repositoriobiologico.com.br//jspui/handle/123456789/398
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