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

A New Species of Rhinergasilus Boeger et Thatcher, 1988 (Copepoda: Ergasilidae) from Gills of Astyanax fasciatus (Cuvier, 1819) (Actinopterygii: Characidae)

Full text
Narciso, Rodrigo Bravin [1] ; Brandao, Heleno [2] ; Perbiche-Neves, Gilmar [3] ; da Silva, Reinaldo Jose [1]
Total Authors: 4
[1] Sao Paulo State Univ, Inst Biosci, UNESP, Botucatu, SP - Brazil
[2] Univ Tecnol Fed Parana UTFPR, Santa Helena, Parana - Brazil
[3] Univ Fed Sao Carlos UFSCAR, Sao Carlos, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: ACTA PARASITOLOGICA; v. 65, n. 2, p. 327-334, JUN 2020.
Web of Science Citations: 1

Purpose To describe a new species of a parasitic copepod, Rhinergasilus digitus n. sp. (Cyclopoida, Ergasilidae), collected from the gills of the red-tailed lambari Astyanax fasciatus (Characiformes, Characidae) in two tributaries of the Jurumirim Reservoir (Upper Paranapanema River), Sao Paulo State, Brazil: Ribeirao dos Veados and Paranapanema River. Methods Fish were collected using multi-panel gills nets. The gill of each fish was washed and examined in a stereo microscope for copepods. The copepods found were stored in 70% ethanol, cleared in lactic acid, and mounted in Hoyer's medium. Drawings were made with the aid of a Leica microscope DMLS equipped with a drawing tube. Results The new species differs from its congeneric species, Rhinergasilus piranhus (type-species), in having comparatively biggest body size (body length: 535-598 mu m in the new species vs. 237-282 mu m in R. piranhus); second antennary segment armed with a minute sensillum near middle of inner margin and a row of spinules on outer margin; third exopodal segment of leg 1 with digitiform process; interpodal plates two and three both ornamented with spinules along posterior margin; leg 5 reduced and represented by two unequal setae. Conclusions Based on the morphological differences described above, we erected a new species of Rhinergasilus. Rhinergasilus digitus n. sp. is the second ergasilid described from A. fasciatus, as well as it represents the first report of this genus in a characid fish. (AU)

FAPESP's process: 11/24159-3 - The Taquari River as area of reproduction and recruitment of fish and its role in biodiversity maintenance of the Jurumirim Reservoir (Upper Rio Paranapanema, SP)
Grantee:Reinaldo José da Silva
Support type: Regular Research Grants