Data from: Reproductive phenology of the tomato frog, Dyscophus antongili, in an urban pond of Madagascar's east coast

Based on daily monitoring around an urban pond in the coastal town of Maroantsetra, from 2003-2011, we provide an analysis of the yearly reproductive activity of the tomato frog (Dyscophus antongilii), a large-sized and prominent red-coloured microhylid frog from north-eastern Madagascar. Frogs were observed all year round but despite the lack of limited climatic seasonality in the region it was possible to observe a high activity period between January-May and a lower activity period between June-December. Freshly laid eggs were found in all months except November, and with highest incidence between January and May, while calling was heard in all months. We found a positive correlation between daily adult counts and minimum air temperature. On the contrary rainfall did not significantly predict activity, although boosts of calling and egg-laying especially in the austral winter were observed after heavy rainfall events. We define D. antongilii in Maroantsetra as a sporadic wet season breeder that reproduces at irregular intervals following heavy rain events.

本数据集基于2003年至2011年间对沿海城镇马安赞特拉（Maroantsetra）一处城市池塘周边的日常监测，针对番茄蛙（Dyscophus antongilii）的年度繁殖活动展开了系统性分析。番茄蛙是产自马达加斯加东北部、体型硕大且体色醒目的姬蛙科（Microhylidae）蛙类。研究区域内全年均有蛙类观测记录，但尽管该区域气候季节性并不显著，仍可观测到1月至5月为活动高峰期，6月至12月为活动低谷期。除11月外，全年各月均能发现新鲜产下的蛙卵，其中1月至5月的产卵频次最高；而雄蛙鸣唱行为在所有月份均有观测记录。研究发现，每日记录的成蛙数量与最低气温呈正相关关系。与之相反，降雨量并未显著预测蛙类活动水平，尽管在强降雨事件后，尤其是南半球冬季期间，曾观测到鸣唱行为与产卵事件的显著激增。本研究将马安赞特拉地区的番茄蛙定义为偶发性雨季繁殖者，其繁殖活动会在强降雨事件后以不规则间隔发生。