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	Provedor de dados Neotropical Ichthyology (2) Autor Albert,James S. (2) Evans,Kory M. (2) Bernt,Maxwell J. (1) Crampton,William G. R. (1) Fronk,Aaron H. (1) Palavra-chave Amazon (1) Amazonia (1) Evolution (1) Geometric morphometrics (1) Identification key (1) Magosternarchus (1) Neotropics (1) Sexual dimorphism (1) Systematics (1) Taxonomy (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2020 (1) 2017 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última A redescription of deep-channel ghost knifefish, Sternarchogiton preto (Gymnotiformes: Apteronotidae), with assignment to a new genus Neotropical Ichthyology Bernt,Maxwell J.; Fronk,Aaron H.; Evans,Kory M.; Albert,James S.. ABSTRACT From a study of morphological and molecular datasets we determine that a species originally described as Sternarchogiton preto does not form a monophyletic group with the other valid species of Sternarchogiton including the type species, S. nattereri. Previously-published phylogenetic analyses indicate that this species is sister to a diverse clade comprised of six described apteronotid genera. We therefore place it into a new genus diagnosed by the presence of three cranial fontanels, first and second infraorbital bones independent (not fused), the absence of an ascending process on the endopterygoid, and dark brown to black pigments over the body surface and fins membranes. We additionally provide a redescription of this enigmatic species with... Tipo: Info:eu-repo/semantics/article Palavras-chave: Amazonia; Neotropics; Sexual dimorphism; Systematics; Taxonomy. Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252020000100216 Taxonomic revision of the deep channel electric fish genus Sternarchella (Teleostei: Gymnotiformes: Apteronotidae), with descriptions of two new species Neotropical Ichthyology Evans,Kory M.; Crampton,William G. R.; Albert,James S.. ABSTRACT This paper provides a taxonomic revision of the Neotropical electric fish genus Sternarchella, with redescriptions of seven valid species and descriptions of two new species. A maximum parsimony analysis of 76 morphological characters from seven ingroup and seven outgroup taxa recovered a non-monophyletic Sternarchella, in which a clade comprising two species with a ventral mouth (S. orinoco + S. sima) is the sister group to a clade comprising seven species that possess a terminal or superior mouth. Nested within this higher-diversity clade is the genus Magosternarchus (recognized herein as a junior synonym of Sternarchella) comprising M. duccis and M. raptor. The Magosternarchus clade forms a polytomy with S. orthos and S. schotti. Sternarchella... Tipo: Info:eu-repo/semantics/article Palavras-chave: Amazon; Evolution; Geometric morphometrics; Identification key; Magosternarchus. Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252017000200210 Registros recuperados: 2 Primeira ... 1 ... Última

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