豫北太行山区中国林蛙的生态学研究

Study on the Ecology of Rana Chensinensis in the Mountain Taihang Mountains on the North of Henan Province

报道了豫北太行山区中国林蛙的生境、生活习性、繁殖生态和食性.繁殖季节为3月上旬至4月中下旬.种群性比因时而异,产卵期间雌雄性比较小（1/6.16～1/4.50）,产卵后雌雄性比有一定的上升（1/3.33～1/2.08）,即将开始冬眠时雌雄性比最高（1/1.53）.室内和野外自然条件下产卵量有较大差异,室内平均为478粒,野外自然条件下平均为1 079粒.卵粒直径约为1.5～1.8 mm.捕食种类以膜翅目、鞘翅目和双翅目昆虫居多;有益系数以及食物种类在不同季节有所差异.

The ecological habits of Rana chensinensis in Mt. Taihang on the north of Henan Province was reported. We investigated it from habitat, activity, feeding and breeding habits. The breeding season was from early March to mid April. The sex ratio varied with the seasons. During the reproductive period the sex ratio reached the maximum. It reached the minimum in hibernation. The average number of eggs layed in house condition is obvious less than in field. The analysis of the feeding habits of Rana chensinensis indicated that they feed on many kinds of preys which mainly composed of Hymenoptera, Copcoptera, Diptera and Lepidoptera. The beneficial coefficient also varied with the seasons.