温度对真水狼蛛发育和繁殖的影响  

Effect of temperature on postembryonic development and fecundity of Pirata piraticus

作　　者：彭宇[1] 赵敬钊 刘凤想[1] 胡萃[2] 

机构地区：[1]湖北大学生命科学学院,武汉430062 [2]浙江农业大学植保系,杭州310029

出　　处：《生态学报》2000年第4期606-610,共5页Acta Ecologica Sinica

摘　　要：报道了温度对真水狼蛛发育和繁殖的影响。在 2 0～ 32℃恒温条件下 ,随着温度的升高历期逐渐变短。真水狼蛛在武汉地区一年可发生 2～ 3代。幼蛛发育到成熟所需蜕皮次数与温度有关 ,在各种温度下 ,均以蜕皮 6次的个体最多。 2 8℃恒温条件下 ,产卵率最高 ,孵化率最高 ;30℃下单雌产卵量最大。母蛛携带幼蛛的时间随温度的升高而缩短。根据真水狼蛛在 6种恒温下的幼蛛存活率、雌蛛产卵率、产卵量和孵化率组建了真水狼蛛在不同温度条件下的实验种群增长表。在 6种温度下 ,其种群数量均呈上升趋势 ,其中以 2 8℃时种群数量增长最快 ,繁殖一代种群数量可增加 73.The postembryonic development and fecundity of P.piraticus were investigated at 6 constant temperatures.At 20～32℃,the duration shortened with rising of temperature.In Wuhan area,the spider happened 2～3 generations in one year.The molting times of the spider was influenced by temperature and most of the spider molted 6 times.Both ovipositing rate and hatching rate were the largest at 28℃,while the biggest number of eggs laid by one female occurred at 30℃.When temperature rose from 20℃ to 35℃,the maternal spiders carried their spiderlings for a shorter period.A table for growth index of experimental population was given,and the highest growth index was at 28℃.

关 键 词：真水性狼蛛 发育 繁殖力 温度 天敌 生物防治 

分 类 号：S433[农业科学—农业昆虫与害虫防治]