Artículos de revistas
Metazoan parasites of Plagioscion squamosissimus, an invasive species in the Tietê River, São Paulo, Brazil
Parasitas metazoários de Plagioscion squamosissimus, uma espécie invasora no Rio Tietê, São Paulo
Fecha
2017-01-01Registro en:
Revista Brasileira de Parasitologia Veterinaria, v. 26, n. 2, p. 143-151, 2017.
0103-846X
10.1590/s1984-29612017035
S1984-29612017000200143
2-s2.0-85025435815
S1984-29612017000200143.pdf
6917116652167404
0000-0003-3958-7227
Autor
Universidade Estadual Paulista (Unesp)
Universidade Camilo Castelo Branco - Unicastelo
Institución
Resumen
This study focused on the characterization and analysis of communities and infra-communities of metazoan parasites of Plagioscion squamosissimus caught in Promissão Reservoir in the Tietê River in Borborema (21°39'58“S, 49°8'49“W), state of São Paulo, Brazil. Fifty adult specimens caught by professional fishermen in March 2015 were necropsied. The fish presented an average standard length of 25.2 ± 2.2 cm and average weight of 328.82 ± 89.03 g. A total of 5,227 specimens of metazoan parasites were collected: 2,880 (55.1%) adult Diplectanum piscinarius (Monogenoidea: Diplectanidae) and 2,347 (44.9%) Austrodiplostomum compactum metacercariae (Digenea, Diplostomidae), both with 100% prevalence and mean abundance of 57.6 and 46.9, respectively. Parasite diversity was low (species richness = 2), with a Simpson index (D) equal to 0.505, and low values of Brillouin (HB = 0.687) and Margalef diversity (I = 0.117) indices. Berger-Parker’s index of dominance (p = 0.551) indicated a slight dominance of the monogenean parasite D. piscinarius. There was a positive correlation, assessed by Pearson coefficient between parasite abundance of D. piscinarius and standard length (r = 0.43) and weight (r = 0.51) of hosts.