Biodiversity of parasites found in the trahira, Hoplias malabaricus (Bloch, 1794), collected in the Batalha River, Tietê-Batalha drainage basin, SP, Brazil

Author(s)

THAYANA GIÃO ^[1] ; LARISSA S. PELEGRINI ^[2] ; RODNEY K. DE AZEVEDO ^[3] ; VANESSA D. ABDALLAH ^[4]

Affiliation

^[1] Universidade do Sagrado Coração/USC. Pró-reitoria de Pesquisa e Pós-graduação - Brasil

^[2] Universidade Estadual Paulista/UNESP. Instituto de Biociências de Botucatu - Brasil

^[3] Universidade do Sagrado Coração/USC. Pró-reitoria de Pesquisa e Pós-graduação - Brasil

^[4] Universidade do Sagrado Coração/USC. Pró-reitoria de Pesquisa e Pós-graduação - Brasil

• Document type: Journal article
• Source: Anais da Academia Brasileira de Ciências; v. 92, n. 2 2020-06-12.

Abstract

Abstract Eighty-one Hoplias malabaricus specimens were collected between February 2014 and June 2016. A total of 29 species of metazoan parasites were found, 13 of which were identified as monogeneans, seven were digenean species, seven of which were nematodes, and two of which were from the subclass Hirudinea. The highest prevalence values ​​were presented by Contracaecum sp. and Tylodelphys sp. The highest mean abundance and mean intensity was recorded by Tylodelphys sp.; the values were ​​36.7 ± 61.8 and 55.65 ± 69.1, respectively. The abundance of the monogenean Urocleidoides cuiabai was found to be positively correlated with host weight. The abundance of Bucephalidae gen. sp. exhibited significant positive correlations with host weight and length. For Contracaecum sp., a significant negative correlation was found between its abundance and host length and weight. No significant differences between the diversity indexes (Margalef, Pielou and Shannon) of the parasites collected in the two points were found. The Sorensen similarity index, with a value of 0.82 between the two sampling points revealed that the parasitic diversity between them is similar. The findings from this study represent new records of occurrence of H. malabaricus, as well as of Urocleidoides margolisi, Scleroductus sp. and Helobdella sp. (AU)

• FAPESP's process: 15/17932-9 - Study of parasites of Hoplias malabaricus (Bloch, 1794) collected in river Batalha, Tiete-Batalha basin, SP, Brazil
• Grantee: Thayana Gião
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• FAPESP's process: 12/23655-0 - Biodiversity of the metazoan parasites of the species of fishes that are predominant in the Batalha River, middle Tietê River, State of São Paulo, Brazil
• Grantee: Vanessa Doro Abdallah Kozlowiski
• Support Opportunities: Regular Research Grants