南京裂爪螨生物学及其发生与温度、降雨的关系

Study on the Biology of S nanjingensis and the Relations with Rain and Air Temperature

研究表明： 南京裂爪螨Ｓｃｈｉｚｏｔｅｔｒａｎｙｃｈｕｓｎａｎｊｉｎｇｅｎｓｉｓ雌成螨营两性或孤雌产雄生殖； 林间自然性比８．２３∶１； 雄螨可交尾多次； 卵集中产于丝膜下， 每雌一生平均产卵１６．７ 粒， 日均产卵０．８ 粒； 该螨以雌成螨和卵滞育越冬， １１ 月中旬入蛰， ３ 月上旬出蛰； ２０～３５℃范围内， 各螨态发育历期随温度升高而变短， ４１℃不能完成生活史； 从卵到成螨产卵有效积温为３２５．３７８ ５日度， 计算该螨在福建１ａ 发生１９ 代． 少量降雨造成幼、若、成螨大量死亡， 但对卵孵化影响不大， 浸水对幼、若。

The biology of S nanjingensis and the relations with rain and air temperature were studied The gfemale adults run bisexual reproduction or arrhenotoky,the proportion of female to male is 8 23 naturally,the males can mate many time,but the females only once,every female adult can oviposite 0 8 a day and the total is 16 7 on average in one life,and,they can survive in the winter as female adults or egg by diapausing from November to March The result also showed that the mites grow quickly with the rising of temperature in 20～35℃ and their effective accumulative temperature from egg to lying egg is 324 378 5d,short term rain can cause larvas,nymphs and adults dead but the eggs don't,and there is significant effect on the egg,larvas,nymphs and adults if they are soaked