斜纹猫蛛生物学特性的观察

Observations on the Biological Characteristics of Oxyopes sertatus

对斜纹猫蛛的生物学特性进行观察 ,结果表明 ,斜纹猫蛛在鲁东南沿海地区一年发生一代 ,以不同的若蛛在松树翘皮下、枝叶基部和杂草丛中越冬 ,翌年 4月上旬出蛰活动 ,若 (幼 )蛛经 7龄 ,5月上旬开始羽化成蛛 ,5月中旬开始产卵 ,卵期 1 3 9d ,若 (幼 )蛛期 34 1 5d ,成蛛期 4 0 6d ,雌雄比为 3∶1。成蛛日捕食松大蚜 6 0 5 6头 ,是多种害虫的天敌。该蛛的发生与自然灾害、海拔高度、天敌等关系密切。封山育林 ,禁止使用化学农药是保护成若蛛、扩大繁殖的关键。

Observations on the biological characteristics of Oxyopes sertatus were conducted. The result shows that: Oxyopes sertatus has one generation a year in southeast littoral of Shandong, China. Over winter takes place as larva in the pine parks, the base of leaf or weeds. Emergence occurs in early April the next year and imagines occurs in early May after seven instars. Oviposition occurs in mid May and the incubation period is 13.9 days. The life cycle of the larva is 341.5 days, the life span of the adult spider is 40.6 days. Male and female are in a radio of three to one. An adult spider can eat 6.056 Cinara pinea Mordv and it is the main natural enemy of many pests. The outbreak of the spider has a close relationship with natural calamities, altitudes and natural enemy. Closing hillsides and planting trees with the prohibition of using chemical insecticide is the key to protect them.