First record of Hysterothylacium sp Moravec, Kohn et Fernandes, 1993 larvae (Nematoda: Anisakidae) infecting the ornamental fish Hyphessobrycon eques Steindachner, 1882 (Characiformes, Characidae)

Author(s)

Acosta, A. A. ^[1] ; Silva, R. J. ^[1]

Affiliation

^[1] UNESP, Inst Biociencias, Lab Parasitol Anim Silvestres, Programa Posgrad Zool, Dept Parasitol, BR-18618970 Botucatu, SP - Brazil

• Document type: Journal article
• Source: Brazilian Journal of Biology; v. 75, n. 3, p. 638-642, AUG 2015.
• Web of Science Citations: 1

Abstract

This study reports for the first time infection with Hysterothylacium sp. larvae in the ornamental fish Hyphessobrycon eques from the Paranapanema River, Jurumirim Reservoir, Sao Paulo State, Brazil. A sample of 33 specimens of H. eques was collected in October, 2011. Four specimens of H. eques were parasitized by Hysterothylacium sp. larvae in the intestine and coelomic cavity, with prevalence of 12.1%, mean intensity of infection of 1, and mean abundance of 0.121 +/- 0.05. A total of 40 unidentified free-living nematodes were found in the stomach content of 17 fish. This fish species is introduced in the Paranapanema River. Invasive species may affect the native fauna given the introduction of pathogens and parasites. This study also complements data on the diet of H. eques due to the records of free-living nematode as part of the stomach content. Infections with Hysterothylacium sp. larvae may affect the biology of this fish and bring about profit losses to aquarists. (AU)

• FAPESP's process: 10/19543-6 - Environmental integrity of the Jurumirim Reservoir (Upper Paranapanema River) based on the fish fauna, parasite supracommunity, feeding and migratory behavior of fishes
• Grantee: Edmir Daniel Carvalho
• Support type: Regular Research Grants