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Two new species of Heptapterus (Siluriformes: Heptapteridae) from the Uruguay River basin, Brazil
Author(s) -
FaustinoFuster Dario R.,
Bockmann Flávio A.,
Malabarba Luiz R.
Publication year - 2019
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/jfb.13908
Subject(s) - biology , structural basin , fishery , drainage basin , mekong river , ecology , zoology , paleontology , geography , cartography
As part of an ongoing taxonomic revision of the genus Heptapterus from the Laguna dos Patos and Uruguay River drainages and Atlantic coastal streams of southern Brazil and Uruguay, two new species closely related to Heptapterus mustelinus were identified. Both species are endemic to small tributaries of the Uruguay River. The two new species are distinguished from each other and from other species of Heptapterus by arrangement of cephalic and trunk laterosensory systems, number of vertebrae and number of dorsal, pectoral and anal‐fin rays. Phylogenetic analyses of mitochondrial DNA ( coI and cytb ) sequence data further supports distinctiveness of the two new species.