The Jumping Viper genus Metlapilcoatlus is composed of five species distributed throughout the Mesoamerican region, with M. indomitus being endemic to Honduras. While there have been numerous publications about its distribution, basic data concerning the species natural history (reproduction, diet, and behavior) remain poorly known. Here we expand on the knowledge of M. indomitus through an ex-situ study of two captive individuals inside a herpetarium. Over the course of three years from October 11, 2017, we monitored reproductive patterns of courtship, copulation, and reproductive potential. We register two events of courtship and copulation, and three deliveries with a total of 61 neonates (26, 14, and 21 respectively). We found significant differences in the total length of the neonates between broods (p = 3.557e-12). Our data mark a strong correlation and linear trade-off between the number of offspring per delivery and their length, with neonates of broods containing fewer offspring being of greater length, whereas those neonates from larger broods were shorter in average.

中文翻译：

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圈养的 Metlapilcoatlus indomitus (Serpentes: Viperidae) 生殖生物学的第一个数据

跳跃蝰蛇属 Metlapilcoatlus 由五个物种组成，分布在整个中美洲地区，其中 M. indomitus 是洪都拉斯特有的。虽然已经有许多关于其分布的出版物，但关于该物种自然历史（繁殖、饮食和行为）的基本数据仍然知之甚少。在这里，我们通过对爬行动物中两个圈养个体的异地研究来扩展对 M. indomitus 的了解。从 2017 年 10 月 11 日起的三年时间里，我们监测了求偶、交配和繁殖潜力的繁殖模式。我们记录了两个求偶和交配事件以及三个分娩事件，总共有 61 个新生儿（分别为 26、14 和 21）。我们发现幼崽之间的新生儿总长度存在显着差异（p = 3.557e-12）。