2016
DOI: 10.1590/0001-3765201620140569
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Abstract: This study aimed to describe the reproductive biology of populations of Thamnodynastes hypoconia in subtemperate wetlands based on macroscopic analyses of their gonads. We analyzed 101 specimens from the southernmost regions of Brazil. The males had a greater snout-vent length, but the females reached sexual maturity with a greater body size. The reproductive cycle of the females was seasonal, with secondary vitellogenesis occurring between the winter and spring (May-October). Based on macroscopic analysis of … Show more

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Cited by 8 publications
(7 citation statements)
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“…Once cold temperatures represent a limiting factor mainly for egg incubation (Hubert, 1985), the seasonal cycle with the advanced stages restricted to warmer seasons was expected. This pattern corroborates with the female cycle observed for congeneric Lygophis anomalus (Panzera & Maneyro, 2013), as well as subtropical populations of other dipsadid species (Aguiar & Di-Bernardo, 2005;Balestrin & Di-Bernardo, 2005;López & Giraudo, 2008;Zanella & Cechin, 2010;Oliveira et al, 2011;Mesquita et al 2013;Rebelato et al 2016;Quintela et al, 2017;J. G. Frota, unpubl.…”
Section: Ratiosupporting
confidence: 79%
See 1 more Smart Citation
“…Once cold temperatures represent a limiting factor mainly for egg incubation (Hubert, 1985), the seasonal cycle with the advanced stages restricted to warmer seasons was expected. This pattern corroborates with the female cycle observed for congeneric Lygophis anomalus (Panzera & Maneyro, 2013), as well as subtropical populations of other dipsadid species (Aguiar & Di-Bernardo, 2005;Balestrin & Di-Bernardo, 2005;López & Giraudo, 2008;Zanella & Cechin, 2010;Oliveira et al, 2011;Mesquita et al 2013;Rebelato et al 2016;Quintela et al, 2017;J. G. Frota, unpubl.…”
Section: Ratiosupporting
confidence: 79%
“…Among the several aspects of natural history, data on the reproductive biology are especially essential, considering its importance for the adoption of strategies for the species conservation (Shine & Bonnet, 2009;Almeida-Santos et al, 2014). Once scarce, studies on the reproductive aspects of Neotropical snakes have received a substantial increment in the past decades (Almeida-Santos et al, 2014), which included relevant investigations on species or populations occurring in subtropical climatic domains (Hartmann et al, 2004;Aguiar & Di-Bernardo, 2005;Balestrin & Di-Bernardo, 2005;Leite et al, 2009;Zanella & Cechin, 2010;Oliveira et al, 2011;Mesquita et al, 2013;Panzera & Maneyro, 2013;Rebelato et al, 2016;Loebens et al, 2017;Quintela et al, 2017). These studies revealed a predominant pattern of seasonal female reproductive cycle (restricted to the warmer period of the year) and marked sexual dimorphism, where females attain larger body sizes and males have tails comparatively larger.…”
mentioning
confidence: 99%
“…Although anuran activity in the area decreases during cold months, most terrestrial and aquatic species can be found throughout the year (Ximenez and Tozetti 2015), which suggests that seasonal variation of food resources may not represent the conditioning factor for the temporal discontinuity in the advanced vitellogenesis of the E. p. sublineatus populations analyzed. The pattern of non-continuous or seasonal female reproduction was found in a variety of guilds and reproductive modes of populations or species from the subtropical Neotropics (Hartmann et al 2004, Aguiar and Di-Bernardo 2005, Balestrin and DiBernardo 2005, Pizzato and Marques 2006, López and Giraudo 2008, Leite et al 2009, Zanella and Cechin 2010, Mesquita et al 2013, Rebelato et al 2016, where temperature seems to represent a strong limiting factor. An examination of the male reproductive cycle based solely on macroscopical analyses is limited to provide an accurate view of the occurring patterns (Rojas et al 2013 (Vieira 1984) and this condition may represent a limiting factor for gametogenesis, in view of its thermal requirements (Girons 1982).…”
Section: Discussionmentioning
confidence: 99%
“…Frota, unpublished data) and other xenodontines (e.g. Aguiar & Di-Bernardo 2005, López & Giraudo 2008, Orofino et al 2010, Zanella & Cechin 2010, Mesquita et al 2013, Panzera & Maneyro 2013, Rebelato et al 2016). This pattern is commonly observed in snakes that do not present male-tomale combat (Shine 1994).…”
Section: Discussionmentioning
confidence: 93%
“…We examined sexual dimorphism, reproductive cycle in females, fecundity and size at sexual maturity. In view of the seasonal pattern found in all dipsadids so far studied in subtropical domains of Pampa biome and surrounding Atlantic Forest (Aguiar & Di-Bernardo 2005, Balestrin & Di-Bernardo 2005, Zanella & Cechin 2010, Mesquita et al 2013, Panzera & Maneyro 2013, Rebelato et al 2016, Loebens et al 2016, Quintela et al 2017, we hypothesize that E. j. coralliventris will also exhibit a reproductive pattern characterized by marked seasonality.…”
Section: Introductionmentioning
confidence: 86%