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	Provedor de dados Genet. Mol. Biol. (2) Mastozool. neotrop. (1) Autor Castilho,Camila S. (1) Cordeiro-Estrela,Pedro (1) Fornel,Rodrigo (1) Freitas,Thales R.O. de (1) Gava,Adriana (1) Schleich,Cristian E. (1) de Freitas,Thales Renato O. (1) Mais... Palavra-chave Subterranean rodent (3) Care-elicitation calls (1) Chromosome polymorphism (1) Cranium (1) Geometric morphometrics (1) Honest signaling (1) Karyotypes (1) Microsatellite (1) Phenotypic evolution (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Info:eu-repo/semantics/report (1) Ano 2018 (1) 2012 (1) 2009 (1) País Brazil (2) Argentina (1) Idioma Inglês (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última A hybrid zone of the genus Ctenomys: a case study in southern Brazil Genet. Mol. Biol. Castilho,Camila S.; Gava,Adriana; Freitas,Thales R.O. de. We describe variation at microsatellite loci and the chromosomal polymorphisms of a hybrid population, and hybridizing populations of Ctenomys minutus (the minor tuco-tuco) from the coastal plain of Rio Grande do Sul, southern Brazil. Cytogenetic analysis and a survey of six microsatellite loci included 101 specimens of C. minutus from the parental populations (2n/AN = 42/74 and 48a/76) and their contact zone. Cytogenetic analysis recorded 26 different karyotypes exhibited by 50 individuals from the hybrid population. Of the 26 karyotypes, only 14% presented a parental-like configuration, and none had the combinations of 2n and AN expected for an F1 hybrid. The remaining karyotypes were alternative hybrid forms, with 2n varying from 42 to 46 and AN from 68... Tipo: Info:eu-repo/semantics/article Palavras-chave: Chromosome polymorphism; Subterranean rodent; Karyotypes; Microsatellite. Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572012000600014 Effect of age and temperature on the vocal behavior of pups of Ctenomys talarum (Rodentia: Ctenomyidae) Mastozool. neotrop. Schleich,Cristian E.. The aim of this study was to determine if the rate of vocalizations emitted by isolated pups of the subterranean rodent Ctenomys talarum vary with pups' age and ambient temperature. As expected, the time that the pups spent begging during isolation decreased as they grew up. No statistical differences in the time spent begging were observed between pups at 25º C or 19º C. However the situation was different if the pup's body weight was considered. In twelve analyzed periods, at thermoneutrality (25º C) the pup with lowest body weight of each litter vocalized only six times more than the others, while at low temperatures (19º C) the number rose to nine times. The meaning of these results, considering the main predictions of honest signaling models, is... Tipo: Info:eu-repo/semantics/report Palavras-chave: Care-elicitation calls; Honest signaling; Subterranean rodent. Ano: 2009 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832009000100025 Skull shape and size variation within and between mendocinus and torquatus groups in the genus Ctenomys (Rodentia: Ctenomyidae) in chromosomal polymorphism context Genet. Mol. Biol. Fornel,Rodrigo; Cordeiro-Estrela,Pedro; de Freitas,Thales Renato O.. Abstract We tested the association between chromosomal polymorphism and skull shape and size variation in two groups of the subterranean rodent Ctenomys. The hypothesis is based on the premise that chromosomal rearrangements in small populations, as it occurs in Ctenomys, produce reproductive isolation and allow the independent diversification of populations. The mendocinus group has species with low chromosomal diploid number variation (2n=46-48), while species from the torquatus group have a higher karyotype variation (2n=42-70). We analyzed the shape and size variation of skull and mandible by a geometric morphometric approach, with univariate and multivariate statistical analysis in 12 species from mendocinus and torquatus groups of the genus Ctenomys.... Tipo: Info:eu-repo/semantics/article Palavras-chave: Cranium; Geometric morphometrics; Phenotypic evolution; Subterranean rodent. Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572018000200263 Registros recuperados: 3 Primeira ... 1 ... Última

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