PARASITISM ASSOCIATED WITH LENGTH AND GONADAL MATURITY STAGE OF THE FRESHWATER FISH METYNNIS LIPPINCOTTIANUS (CHARACIDAE)

Authors

  • Fábio Hideki Yamada Laboratório de Ictioparasitologia/Nupelia, Universidade Estadual de Maringá, Bloco G-90, Av. Colombo, 5790, 87020-900, Maringá, Paraná, Brasil. https://orcid.org/0000-0003-3317-8799
  • Luís Henrique de Aquino Moreira Laboratório de Ictioparasitologia/Nupelia, Universidade Estadual de Maringá, Bloco G-90, Av. Colombo, 5790, 87020-900, Maringá, Paraná, Brasil.
  • Tiago Lopes Ceschini Laboratório de Ictioparasitologia/Nupelia, Universidade Estadual de Maringá, Bloco G-90, Av. Colombo, 5790, 87020-900, Maringá, Paraná, Brasil. https://orcid.org/0000-0003-0199-0547
  • Maria de los Angeles Perez Lizama Laboratório de Ictioparasitologia/Nupelia, Universidade Estadual de Maringá, Bloco G-90, Av. Colombo, 5790, 87020-900, Maringá, Paraná, Brasil. https://orcid.org/0000-0002-9714-9383
  • Ricardo Massato Takemoto Laboratório de Ictioparasitologia/Nupelia, Universidade Estadual de Maringá, Bloco G-90, Av. Colombo, 5790, 87020-900, Maringá, Paraná, Brasil. https://orcid.org/0000-0001-7592-2083
  • Gilberto Cezar Pavanelli Laboratório de Ictioparasitologia/Nupelia, Universidade Estadual de Maringá, Bloco G-90, Av. Colombo, 5790, 87020-900, Maringá, Paraná, Brasil. https://orcid.org/0000-0001-5875-185X

DOI:

https://doi.org/10.24039/rnh2012621014

Keywords:

Brazil, Characidae, digeneans, endoparasites, Metynnis lippincottianus, nematodes.

Abstract

Parasitism was observed in 72.7% of 44 specimens of Metynnis lippincottianus (Cope, 1870) (Characidae) caught in the Upper Paraná River floodplain, Brazil. One species of digenean, Dadayus pacupeva Lacerda, Takemoto & Pavanelli, 2003, and four species of nematodes, Spinoxyuris oxydoras Peter, 1994, Contracaecum sp. Railliet & Henry, 1912 (larval stage), Procamallanus (Spirocamallanus) inopinatus Travassos, Artigas & Pereira, 1928 and Raphidascaris (Sprentascaris) mahnerti Petter & Cassone, 1984 were identified. The prevalence of D. pacupeva was correlated with the host's standard length. Correlations between the host's standard length and the abundance of S. oxydoras, P. (S.) inopinatus and D. pacupeva were observed. In addition, fish length was correlated with the diversity of parasites. D. pacupeva and S. oxydoras had their abundances influenced by the host's gonadal maturity stage. According to gonadal maturity stage, the host may or may not have an increased susceptibility to parasites, suggesting a cumulative process causing higher parasite abundance in larger fish and in the mature stage (more time of exposure) than the immature stage (young fish).

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Published

2012-12-12

How to Cite

Hideki Yamada, F., de Aquino Moreira, L. H., Lopes Ceschini, T., Perez Lizama, M. de los A., Massato Takemoto, R., & Cezar Pavanelli, G. (2012). PARASITISM ASSOCIATED WITH LENGTH AND GONADAL MATURITY STAGE OF THE FRESHWATER FISH METYNNIS LIPPINCOTTIANUS (CHARACIDAE). Neotropical Helminthology, 6(2), 247–253. https://doi.org/10.24039/rnh2012621014

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Section

Artículos Originales