巴西巴拉那河上游流域首次记录到外来杂交鲶鱼——网状真宽吻鲇×大理石纹油鲶。

First record of non-native hybrid catfish Pseudoplatystoma reticulatum × Leiarius marmoratus in the Upper Paraná River basin, Brazil.

作者信息

Yabu M H S, Vidotto-Magnoni A P, Casimiro A C R, Garcia D A Z, Costa A D A, Prado F D D, Porto-Foresti F, Orsi M L

机构信息

Programa de Pós-graduação em Ciências Biológicas, Universidade Estadual de Londrina, Centro de Ciências Biológicas, Rodovia Celso Garcia Cid, PR 445, Km 380, CEP 86.057-970, Londrina, Paraná, Brazil.

Laboratório de Ecologia de Peixes e Invasões Biológicas, Universidade Estadual de Londrina, Centro de Ciências Biológicas, Departamento de Biologia Animal e Vegetal, Rodovia Celso Garcia Cid, PR 445, Km 380, CEP 86.057-970, Londrina, Paraná, Brazil.

出版信息

J Fish Biol. 2018 Jan;92(1):261-267. doi: 10.1111/jfb.13505. Epub 2017 Nov 30.

DOI:10.1111/jfb.13505

PMID:29194600

Abstract

The aim of this study is to report the presence of a three non-native hybrid long-whiskered catfishes (family Pimelodidae) in the Upper Paraná River basin, Brazil. Genetic analyses demonstrated that the three presumptive hybrids were a result of the crossbreeding of Pseudoplatystoma reticulatum (central Amazonas River basin and Lower Paraná River) and Leiarius marmoratus (Amazonas, Essequibo and Orinoco rivers), producing a hybrid commonly known in Brazil as cachandiá. The potential threat to biodiversity, due to possible genetic contamination, competition and predation of wild stocks, of such artificially produced hybrid fishes is discussed.

摘要

本研究旨在报告在巴西巴拉那河上游流域出现的三只非本地杂交长须鲶鱼（油鲶科）。基因分析表明，这三只假定的杂交种是网状真宽鳍鲶（亚马孙河中部流域和巴拉那河下游）和云斑油鲶（亚马孙河、埃塞奎博河和奥里诺科河）杂交的结果，产生了一种在巴西俗称“cachandiá”的杂交种。本文讨论了此类人工培育的杂交鱼类因可能的基因污染、与野生种群的竞争和捕食而对生物多样性造成的潜在威胁。