A host shift from wild blue cohosh to cultivated potato by the phytophagous ladybird beetle, Epilachna yasutomii (Coleoptera, Coccinellidae)
A host shift from wild blue cohosh to cultivated potato by the phytophagous ladybird beetle, Epilachna yasutomii (Coleoptera, Coccinellidae)
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植食性瓢虫 Epilachna yasutomii（鞘翅目，瓢虫科）将宿主从野生蓝升麻转移到栽培马铃薯
DOI：
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发表时间：
1999
期刊：
影响因子：
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通讯作者：
N. Morimoto
中科院分区：
文献类型：
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作者：
Y. Shirai;N. Morimoto
比较了以野生蓝升麻为食的非害虫种群和以马铃薯为主的栽培茄科作物为食的害虫种群的植食性瓢虫Epilachna yasutomii生活史特征。新出现的成年人的非害虫人口进入滞育早在仲夏时，蓝升麻枯萎，而成年人的害虫人口被发现在番茄和茄子领域，直到深秋。害虫种群有较大的女性，更高的人口增长率，较短的幼虫发育期，并减少越冬女性的寿命，与nonpest人口。方差分析表明，这些生活史性状均受到食用植物的影响，每头雌虫的产卵量和越冬雌虫的寿命也受到种群类型的影响。这些结果表明，E.由于寄主从野生蓝升麻转移到栽培茄科作物，安富氏蚜由低生殖力、寿命长转变为高生殖力、寿命短。
Life history traits of the phytophagous ladybird beetle Epilachna yasutomii were compared between a nonpest population feeding on wild blue cohosh and a pest population feeding on cultivated solanaceous crops, mainly potato. Newly emerged adults of the nonpest population entered diapause early in midsummer when blue cohosh withered, while adults of the pest population were found in tomato and eggplant fields until late autumn. The pest population had larger females, a higher population growth rate, a shorter larval developmental period, and reduced longevity of overwintered females, compared with the nonpest population. ANOVA indicated that all these life history traits were influenced by the food plant, and that the number of eggs laid per female and the longevity of overwintered females were also affected by the population type. These findings suggest that the life history pattern of E. yasutomii changed to high fecundity with a short life span from low fecundity with a long life span as a result of the host shift from wild blue cohosh to cultivated solanaceous crops.