鼋的自然繁殖生态的考察

An investigation of naturally reproductive ecology of Pelochely bibroni

总结瓯江流域鼋自然繁殖生态考察的结果。鼋在5-6月份交配,6-9月份产卵,每窝多数在40-70枚之间。据对鼋的一个卵窝的挖掘,内共有卵55枚,受精率为9.6%;卵的直径是3.0±0.04cm,重量是18.32±0.30g。报导了鼋产卵的窝内温度、湿度和窝腔的大小以及卵在窝内的分布等。

The natural ecology of Pelochely bibroni breeding in Oujiang river drainage area was investigated and the results were summarized in this paper. Animals of this species commonly mate in May and June, laid eggs during the months from June to September. In most cases, the number of eggs laid in one nest were 40 to 70. According to the data collected from one of nests which was dug up by the authors, it showed that the total number of eggs was 55 in the nest, the fertilized egg rate was 9.6% and the average egg size was3.0±0.04cm in diameter. The temperature, moisture and the egg distribution in the nest cavity were also reported in this paper.