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| Zaher,Hussam; Grazziotin,Felipe G.; Graboski,Roberta; Fuentes,Ricardo G.; Sánchez-Martinez,Paola; Montingelli,Giovanna G.; Zhang,Ya-Ping; Murphy,Robert W.. |
| We present the results of the first molecular analysis of the phylogenetic affinities of the Asian colubroid genus Sibynophis. We recovered a sister-group relationship between Sibynophis and the New World Scaphiodontophis. Although Liophidium sometimes is associated with these genera, the relationship is distant. Morphological characters that Liophidium shares with Sibynophis and Scaphiodontophis are resolved as homoplasies that probably reflect the similarities of their specialized feeding habits. The traditional subfamily Sibynophiinae is elevated to the family-level, and Scaphiodontophiinae is placed in its synonymy. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sibynophiidae; Sibynophis; Scaphiodontophis; Phylogeny. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492012001200001 |
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| Siqueira,Débora M.; Nascimento,Loana P.; Montingelli,Giovanna G.; Santos-Costa,Maria Cristina dos. |
| We obtained data on time of sexual maturity, dimorphism, fecundity and on the reproductive cycle of Mastigodryas boddaerti (Sentzen, 1796) through the examination of 321 preserved specimens, of which 221 were collected in the Brazilian Amazon region and 100 in the Cerrado savannas of Central Brazil. The degree of sexual size dimorphism (snout-vent length, SVL) was significantly greater in the specimens from the Cerrado in comparison with those from the Amazon. Females had a significantly larger number of ventral scales, on average, whereas males had more sub-caudal scales. However, there was no intersexual difference in tail length or head width, although the heads of the males were significantly longer, which may reflect dietary differences. Breeding... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amazonia; Ecology; Cerrado; Morphology; Population. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702013000500002 |
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