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Morphology and distribution of the cave knifefish Eigenmannia vicentespelaea Triques, 1996 (Gymnotiformes: Sternopygidae) from Central Brazil, with an expanded diagnosis and comments on subterranean evolution Neotropical Ichthyology
Bichuette,Maria Elina; Trajano,Eleonora.
We present herein data on morphology and distribution of the cave knifefish Eigenmannia vicentespelaea Triques, 1996, from the São Domingos karst area, Central Brazil, comparing it to the epigean (surface) species, Eigenmannia sp., found in the same area (but not syntopic with E. vicentespelaea) and also with congeners from other localities. Collecting sites comprising epigean and subterranean stream reaches in São Domingos were sampled during the dry seasons of 1999, 2000, and 2001 using several methods. Preserved specimens of E. vicentespelaea (n=25, including holotype and paratype) and of Eigenmannia sp. (n=15) were compared with focus on morphometric characters, body pigmentation and eye condition. A combination of characters separates E....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Morphometric data; Electric fishes; Cave environment; São Domingos karst area.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252006000100011
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Three new species of the Eigenmannia trilineata species group (Gymnotiformes: Sternopygidae) from northwestern South America Neotropical Ichthyology
Herrera-Collazos,Edgar Esteban; Galindo-Cuervo,Aleidy M.; Maldonado-Ocampo,Javier A.; Rincón-Sandoval,Melissa.
ABSTRACT Eigenmannia is one of the more taxonomically complex genera within the Gymnotiformes. Here we adopt an integrative taxonomic approach, combining osteology, COI gene sequences, and geometric morphometrics to describe three new species belonging to the E. trilineata species group from Colombian trans-Andean region. These new species increase the number of species in the E. trilineata complex to 18 and the number of species in the genus to 25. The distribution range of the E. trilineata species group is expanded to include parts of northwestern South America and southern Central America.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Electric fishes; Glass knifefishes; Integrative taxonomy; Species delimitation; Trans-Andean region.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252020000100201
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