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	Provedor de dados Neotropical Ichthyology (1) PAB (1) Autor Castaño-Meneses,Gabriela (1) Deprá,Gabriel de Carvalho (1) Ferreira,Katiane Mara (1) Ota,Renata Rúbia (1) Palacios-Vargas,José Guadalupe (1) Vitorino Júnior,Oscar Barroso (1) Mais... Palavra-chave Secondary sexual characters (2) Allochromy (1) Allomery (1) Endemism (1) Guthriella muskegis (1) Knodus breviceps (1) Morphological variations (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2021 (1) 2009 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Two new species of Knodus (Characidae: Stevardiinae) from the upper rio Tocantins basin, with evidence of ontogenetic meristic changes Neotropical Ichthyology Deprá,Gabriel de Carvalho; Ota,Renata Rúbia; Vitorino Júnior,Oscar Barroso; Ferreira,Katiane Mara. ABSTRACT Two new species from the upper rio Tocantins basin are described in Knodus based on the traditional definition of the genus. The new species are distinguished from other congeners by meristic and morphometric characters, such as the number of cusps in the premaxillary and dentary teeth, the number of scale series between dorsal-fin origin and lateral line, the orbital diameter and the body depth. With the two new species, the number of endemic species in the upper rio Tocantins basin upstream of the mouth of the rio Paranã, rises to 53 (89 to the confluence with rio Araguaia). The existence of a meristic character that changes through ontogeny (allomery), viz. the number of scale series between dorsal-fin origin and lateral line, was detected in... Tipo: Info:eu-repo/semantics/article Palavras-chave: Allochromy; Allomery; Endemism; Knodus breviceps; Secondary sexual characters. Ano: 2021 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252021000100208 Importance and evolution of sexual dimorphism in different families of Collembola (Hexapoda) PAB Palacios-Vargas,José Guadalupe; Castaño-Meneses,Gabriela. A bibliographic revision of sexual dimorphism in different families of Collembola was performed in order to determine the most common patterns in each group. We list several examples of the sexual dimorphism in different families of Collembola, which illustrate from some of the smallest differences between males and females to major differences between both sexes in some families. We show different cases of sexual dimorphism in Spinactaletes, Sminthurides, and the remarkable morphology of Guthriella muskegis. It seems that most of the cases of strong sexual dimorphism are related to aquatic habitats or behaviour still not fully understood. Species belonging to primarily aquatic families (fresh water or marine water) have the most evolved morphology, where... Tipo: Info:eu-repo/semantics/article Palavras-chave: Guthriella muskegis; Morphological variations; Secondary sexual characters. Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2009000800024 Registros recuperados: 2 Primeira ... 1 ... Última

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