Feeding Biology of Boddaert's Tropical Racer,Mastigodryas boddaerti(Serpentes, Colubridae) from the Brazilian Amazon

Composition and ecological patterns of snake assemblages in an Amazon-Cerrado Transition Zone in Brazil

“…The most abundant species (Tab. I) were Beebe, 1946;Cunha & Nascimento, 1978;Martins & Oliveira, 1998;Strüssmann, 2000;Marques et al, 2005;Siqueira et al, 2012 Pseustes poecilonotus polylepis Cunha & Nascimento, 1978;Dixon & Soini, 1986;Greene, 1973;Roze, 1996;Martins & Oliveira, 1998;Santos-Costa et al, 2015. Total specimens Crotalus durissus (n = 50), Philodryas olfersii (n = 15), Philodryas nattereri (n = 13), Xenodon rabdocephalus (n = 12), Lachesis muta (n = 10), and Erythrolamprus almadensis (n = 10). However, most of the other species were relatively rare, and eight were recorded only once during the study.…”

“…Over the past few decades, an increasing number of studies of South American snake communities have become available, although data are still scarce for communities of Brazilian Amazon (Martins & Oliveira, 1998;Bernarde & Abe, 2006;Santos-Costa et al 2015), Pantanal (Strüssmann, 2000), Cerrado (Carvalho & Nogueira, 1998;Sawaya et al, 2008), Atlantic Forest (Hartmann et al, 2009), and Pampa (Zanella & Cechin, 2006). Moreover, basic information about feeding ecology, reproductive biology, and habitat use of South American snakes have all been relatively well studied, providing the basis for the identification of certain patterns, such as the reproductive seasonality of species inhabiting temperate zones (Marques & Puorto, 1998;Pizzato et al, 2007), and the lack of seasonality in tropical climates (SantosCosta et al, 2006;Maschio et al, 2007;Prudente et al, 2007;Albarelli & Santos-Costa, 2010;Bernarde & Abe, 2010;Maschio et al 2010, Siqueira et al 2012.…”

Geographical variation in the reproduction and sexual dimorphism of the Boddaert's tropical racer, Mastigodryas boddaerti (Serpentes: Colubridae)

“…This behavior has been suggested for M. bifossatus (FERREIRA & OUTEIRAL 1998, LEITE et al 2009, DOURADO et al 2013, and has been observed in species of other genera, such as Coniophanes fissidens (Günther, 1858) (ZUG et al 1979), Dendrophidion dendrophis (Schlegel, 1837) (PRUDENTE et al 2007) and Echinanthera cyanopleura (Cope, 1885) (ZANELLA & CECHIN 2010). The difference in the length of the heads of males and females of M. boddaerti may be related to the exploitation of different resources, which may contribute to reduce intraspecific competition (SHINE 1993, VINCENT et al 2004) between the sexes, since males feed on larger prey (SIQUEIRA et al 2012).…”

“…The number of eggs and follicles was also counted, and the length of the largest follicle measured. Females were considered sexually mature when containing eggs or flaccid oviducts (SHINE 1977a, SIQUEIRA et al 2012, whereas males were considered mature when they presented opaque and convoluted deferent ducts, which indicates the presence of sperm (SHINE 1977b). Individuals with an umbilical scar were considered to be newborns (SANTOS-COSTA et al 2006).…”

DIMORFISMO SEXUAL, REPRODUCCIÓN Y BIOLOGÍA ALIMENTARIA DE Helicops angulatus (LINNAEUS, 1758) (COLUBRIDAE: HYDROPSINI) EN LA AMAZONIA ORIENTAL, BRASIL

“…Some taxa differ in their habits, especially when it comes to breeding and feeding activity (Pizzatto, Jordão and Marques, 2008;Alencar, Gaiarsa and Martins, 2013;Silva, Oliveira, Nascimento, Machado and Prudente, 2017b). This information may be important to understand, for example, how those behaviors vary and how they affect the species distribution (Santos-Costa, Prudente and Di-Bernardo, 2006;Albarelli and Santos-Costa, 2010;Siqueira, Nascimento and Santos-Costa, 2012;Nascimento, Siqueira and Santos-Costa, 2013;Siqueira, Nascimento, Montingelli and Santos-Costa, 2013).…”