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Acta Limnologica Brasiliensia
https://actalb.org/article/doi/10.1590/S2179-975X10120
Acta Limnologica Brasiliensia
Original Article

Investigating the diversity of fish parasites in the floodplain of the upper Paraná River: a long-term ecological monitoring

Investigando a diversidade de parasitas de peixes da planície de inundação do alto rio Paraná: um monitoramento ecológico de longa duração

João Otávio Santos Silva; Atsler Luana Lehun; Aparecida de Fátima Cracco Rodrigues; Lidiany Doreto Cavalcanti; Danilo Nunes Nicola; Wagner Toshio Hasuike; Ricardo Massato Takemoto

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Abstract

Abstract:: Aim: The aim of this study was to present the description of new species of fish parasites in native and non-native hosts and the parasite interaction / host, available in studies for 37 years in the upper Paraná River floodplain.

Methods: The sampling described in this study is part of a scientometric methodology, in which specific query expressions were used, together with the database available in the Nupelia Sector Library, through Theses and Dissertations.

Results: A total of 44 species of parasites belonging to different groups were described for 27 species of fish of different orders. In these 37 years of studies, an increase 68% was observed in the number of parasite species, presenting a richness of 201 species in the floodplain, being: Monogenea, Digenea, Nematoda and Cestoda are the groups that present the largest records of species. More than 80 hosts have their parasite fauna registered and most studies are carried out with species of native hosts in the floodplain, being Prochilodus lineatus the host with the highest number of records.

Conclusions: Parasitological studies are an important scientific tool for understanding the dynamics of ecological interactions in the natural environment, and knowledge of this diversity of organisms is continuous and necessary, and the results of the monitoring carried out in the floodplain during the last 37 years only reinforce this with a constant increase in the description of new species and new records of parasite-host interactions. In times of constant environmental loss and habitat fragmentation, it is of utmost importance to care for and preserve floodplains to maintain biodiversity.

Keywords

ichthyoparasites, parasitism, biodiversity, ecological study

Resumo

Resumo: Objetivo: O objetivo deste estudo, foi apresentar a descrição de novas espécies de parasitos de peixe em hospedeiros nativos e não nativos, a interação parasito/hospedeiro, com dados disponibilizados de 37 anos de estudos na planície de inundação do alto rio Paraná.

Métodos: A amostragem descrita neste estudo faz parte de uma metodologia cienciométrica, na qual foram utilizadas expressões de consultas específicas, junto com o banco de dados disponíveis pela Biblioteca setorial do Nupelia, através de Teses e Dissertações.

Resultados: Ao todo, 44 espécies de parasitas pertencentes a diferentes grupos foram descritas para 27 espécies de peixes de diferentes ordens. Atualmente, registrou-se um aumento de 68% no número de espécies de parasitas, apresentando uma riqueza de 201 espécies na planície de inundação, sendo: Monogenea, Digenea, Nematoda e Cestoda os grupos que apresentam os maiores registros de espécies. Mais de 80 hospedeiros tem sua fauna parasitária registrada e maioria dos estudos são realizados com espécies de hospedeiros nativos da planície, sendo Prochilodus lineatus o hospedeiro com o maior número de registros.

Conclusões: Os estudos parasitológicos são uma ferramenta científica importante para entender a dinâmica das interações ecológicas em ambiente natural, e o conhecimento desta diversidade de organismos é contínuo e necessário, e os resultados do monitoramento realizado na planície durante os últimos 37 anos só reforçam isso com aumento constante de descrição de espécies novas e novos registros de interação parasito hospedeiro. Em tempos de perda constante de ambiente e fragmentação de habitats, é de extrema importância cuidar e preservar as planícies aluviais para manter a biodiversidade.
 

Palavras-chave

ictioparasitas, parasitismo, biodiversidade, estudo ecológico

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Submitted date:
10/20/2020

Accepted date:
08/17/2021

Publication date:
09/16/2021

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