大树蛙产卵习性的研究

On egg-laying habit of Rnacophorus dennysi Blanford

在福建东北部地区大树蛙的初始抱对时间在3～4月间.抱对发生在闷热高温的傍晚,所持续时间随着温度的升高而缩短,反之则延长;日平均气温低于16℃时,不能实现有效抱对.大树蛙产卵时气温降至17.5℃以下,出现不连续产卵和产卵时间延长的现象.泡沫团卵只由雌蛙搅拌形成,雄蛙无参与行为.产卵于临时性积水者繁殖失败.

The initial embrace of Rnacophorus dennysi Blanford in northeast Fujian takes place at the hot and sultry dusk from March to April. The time taken will be shortened when temperature rises and be lengthened when it drops. Effective embrace will not be realized when the average daily temperature is below 16 ℃. Discontinuous spawning happens when temperature drops below 17.5 ℃ and the spawning time will be longer. The foaming eggs form by stirring of the female only, and the male ones do not join in. The reproduction fails if the egg-laying action takes place in a temporary pond.