Effect of Temperature on Reproductive Performance of Crossbred Frogs in the Winter Season

Abstract

The objectives of this study were to investigate the effect of temperature on growth and survival rate of crossbred frog parents and to study the effect of temperature on fertilization of crossbred frog eggs and hatching rate of crossbred frogs. Crossbred frog parents were raised in cement ponds in the winter season during November 2017 to February 2018. The experiment was laid out in a completely randomized design with three replications. The treatments consisted of untreated control (ambient), 30, 32, 34 and 36 ºC. The results of raising crossbred frogs in cement ponds in the winter indicated that temperatures (of untreated control, 30, 32, 34 and 36 ºC) were not significantly different for body weight and survival rate of parents. The female parent raised at untreated control in the winter season did not lay eggs, whereas female parents raised at 30, 32, 34 and 36 ºC could lay eggs. The female parent raised at 34 ºC tended to have the highest fertilized eggs. The parents raised at 30, 32, 34 and 36 ºC had the hatching rates ranging from 45.9 to 95.9%. The results indicated that reproduction of crossbred frogs in the winter is possible and the temperature range of 30 to 36 ºC is suitable for
crossbred frog reproduction.