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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Parasitism by Sphincterodiplostomum musculosum (Digenea, Diplostomidae) metacercariae in the eyes of Steindachnerina insculpta (Characiformes, Curimatidae)

Full text
Author(s):
Brandao, Heleno [1] ; Yamada, Fabio Hideki [1] ; Toledo, Gislayne de Melo [1] ; Acosta, Aline Angelina [1] ; Carvalho, Edmir Daniel [1] ; da Silva, Reinaldo Jose [1]
Total Authors: 6
Affiliation:
[1] Univ Estadual Paulista Julio de Mesquita Filho UN, BR-18618970 Botucatu, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: Revista Brasileira de Parasitologia Veterinária; v. 23, n. 2, p. 144-149, APR-JUN 2014.
Web of Science Citations: 2
Abstract

New occurrences and effects of parasitism by metacercariae in fish eyes have recently been discussed in many studies. The aim of the present study was to evaluate the infection levels of the eye flukes Sphincterodiplostomum musculosum Dubois, 1936 (metacercariae) in Steindachnerina insculpta (Fernadez-Yepez, 1948) from three ecosystems under the influence of the Jurumirim reservoir (Paranapanema, Taquari and Veados Rivers). A total of 174 fish specimens were sampled between April 2011 and April 2012. There were high levels of infection by S. musculosum metacercariae in the eyes of S. insculpta from all the sampled ecosystems, thus presenting broad geographical distribution. The histological analyses revealed that the metacercariae were apparently lodged behind the retina. The smaller fish from the Taquari River were less parasitized by metacercariae than the adults. This pattern can be explained by the cumulative effect of parasitism, as demonstrated by the positive correlation between the abundance of metacercariae and fish body size. (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
FAPESP's process: 11/22603-3 - Helminths of fish as environmental bioindicators of the Jurumirim Reservoir (Upper Paranapanema River, SP, Brazil).
Grantee:Fábio Hideki Yamada
Support type: Scholarships in Brazil - Post-Doctorate