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Philometra saltatrix (Nematoda: Philometridae) in the ovary of the bluefish, Pomatomus saltatrix (Linnaeus, 1766), off the coast of the state of Rio de Janeiro, Brazil

Published online by Cambridge University Press:  11 April 2017

S.C. São Clemente ,
N.N. Felizardo ,
M.F. Ferreira ,
R.C. Menezes ,
N.C. Cunha ,
F.C.C. Aguiar ,
E.R. Nascimento ,
E.L. Telleria ,
R. Tortelly  and
M. Knoff
S.C. São Clemente
Affiliation:
Fishery Inspection and Technology Laboratory, Fluminense Federal University, Niterói, RJ, Brazil
N.N. Felizardo
Affiliation:
Fishery Inspection and Technology Laboratory, Fluminense Federal University, Niterói, RJ, Brazil
M.F. Ferreira
Affiliation:
Department of Veterinary Medicine, Veterinary School, Espírito Santo Federal University, Alegre, ES, Brazil
R.C. Menezes
Affiliation:
Laboratory for Clinical Research on Dermatozoonoses in Domestic Animals, Evandro Chagas National Institute of Infectious Disease, Fiocruz, Rio de Janeiro, RJ, Brazil
N.C. Cunha
Affiliation:
Molecular Epidemiology Laboratory, Department of Veterinary Public Health, Fluminense Federal University, Niterói, RJ, Brazil
F.C.C. Aguiar
Affiliation:
Molecular Epidemiology Laboratory, Department of Veterinary Public Health, Fluminense Federal University, Niterói, RJ, Brazil
E.R. Nascimento
Affiliation:
Molecular Epidemiology Laboratory, Department of Veterinary Public Health, Fluminense Federal University, Niterói, RJ, Brazil
E.L. Telleria
Affiliation:
Laboratory of Parasite and Vector Molecular Biology, Oswaldo Cruz Institute, Fiocruz, Rio de Janeiro, RJ, Brazil
R. Tortelly
Affiliation:
Department of Pathology, Veterinary School, Fluminense Federal University, Niterói, RJ, Brazil
M. Knoff*
Affiliation:
Laboratory of Helminth Parasites of Vertebrates, Oswaldo Cruz Institute, Fiocruz, Rio de Janeiro, RJ, Brazil
*
*E-mail: [email protected]
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Abstract

The aims of the present study were to identify and describe the occurrence of nematode parasites in the gonads of bluefish Pomatomus saltatrix from off the coast of the state of Rio de Janeiro, Brazil. Only females were found to be parasitized by the nematodes, which were identified as P. saltatrix using morphological, morphometric and molecular data. Infection of female bluefish by this nematode had the following values: prevalence, 48.7%; mean intensity, 2.6; mean abundance, 1.3; and range of infection, 1–10 specimens. Histopathological examination of transverse and longitudinal sections of the parasitized ovaries showed nematodes at different stages of development among oocytes, but no indication of any associated inflammatory reaction. The presence of nematodes in the ovaries of bluefish is an important indication of fish hygiene, and parasitized fish are usually rejected by consumers because of their repugnant appearance.

Type
Research Papers
Information
Journal of Helminthology , Volume 92 , Issue 2 , March 2018 , pp. 210 - 215
Copyright
Copyright © Cambridge University Press 2017 

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