Helicometrina nimia Linton, 1910 (Digenea: Opecoelidae) in dusky grouper Epinephelus marginatus (Lowe, 1834) (Teleostei: Serranidae) from southeastern Brazil

Helicometrina nimia (Opecoelidae) is a digenean with wide distribution. Fish families most commonly used as hosts for H. nimia are Serranidae, Pomodasydae, Scorpaenidae and Clinidae. In the present study, a new host and a new host locality are presented for the species. A description of the studied...

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Bibliographic Details
Published in:Brazilian journal of biology 2014-05, Vol.74 (2), p.472-479
Main Authors: Roumbedakis, K, Marchiori, N C, Garcia, P, Pereira Junior, J, Castro, L A S, Martins, M L
Format: Article
Language:English
Subjects:
Animals
BIOLOGY
Brazil - epidemiology
Female
Fish Diseases - epidemiology
Fish Diseases - parasitology
intestine
Male
marine fish
parasitology
Perciformes - parasitology
Prevalence
stomach
Trematoda - classification
Trematoda - isolation & purification
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Summary:Helicometrina nimia (Opecoelidae) is a digenean with wide distribution. Fish families most commonly used as hosts for H. nimia are Serranidae, Pomodasydae, Scorpaenidae and Clinidae. In the present study, a new host and a new host locality are presented for the species. A description of the studied specimens, besides comments concerning its taxonomic status and biometrically compared tables of H. nimia reports are given. The taxonomic status of members of Helicometrina has been questionable. The greatest controversy for the genus seems to be related to the validity of diagnostic features, especially in regard to the number of testes. In the present study, all studied specimens presented a permanent and steady number of testes (n=9) and therefore its use as a diagnostic character is supported by the present authors. Epinephelus marginatus is considered a new host for Helicometrina nimia, and São Paulo state, southeastern Brazil, a new locality for the species.
ISSN:1519-6984
1678-4375
1678-4375
1519-6984
DOI:10.1590/1519-6984.12612