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首页> 外文期刊>The Herpetological journal >Reproductive biology of Atractus reticulatus (Boulenger, 1885) (Sepentes, Colubridae) in southern Brazil
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Reproductive biology of Atractus reticulatus (Boulenger, 1885) (Sepentes, Colubridae) in southern Brazil

机译：巴西南部的白术生殖生物学（Boulenger，1885年）（Sepentes，Colubridae）

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The reproductive biology of Atractus reticulatus was studied based on the analyses of 135 specimens from preserved in collections, and on field observations in Rio Grande do Sul State, southern Brazil. The snout-vent length (SVL) of mature females was significantly larger than the SVL of mature males, and the tail length (TL) of mature males was significantly longer than the TL of mature females. Analysis of neonate body size, hatching time and seasonal distribution of body size classes (SVL) suggests that males reach sexual maturity at eight to 10 months old (SVL c. 198 mm) and females at 11 to 12 months old (SVL c. 242 mm). The reproductive period begins in late August, with clutches laid in November, December and January, and hatching occurring from January to March. Fecundity is low: the number of vitellogenic follicles varied from 2 to 6, and the number of eggs from 1 to 3. Relative to female size, the eggs are large and the clutches are heavy, corresponding to approximately 27 % of female body mass.
机译：基于对135份标本保存的标本的分析，以及在巴西南部南里奥格兰德州的实地观察，对白术的生殖生物学进行了研究。成熟雌性的鼻出口长度（SVL）明显大于成熟雄性的SVL，成熟雄性的尾巴长度（TL）明显长于成熟雌性的TL。对新生儿体重，孵化时间和体重类别的季节性分布（SVL）的分析表明，男性在8至10个月大（SVL约198毫米）时达到性成熟，而女性在11到12个月大（SVL 242时）达到性成熟。毫米）。生殖期从八月下旬开始，抓紧时间分别在十一月，十二月和一月，孵化期从一月到三月。产卵率低：卵黄卵泡的卵数从2到6不等，卵的数量从1到3不等。相对于雌性大小，卵大且离合较重，约占雌性体重的27％。

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