Maize benefits the predatory beetle, Propylea japonica (Thunberg), to provide potential to enhance biological control for aphids in cotton.
Maize benefits the predatory beetle, Propylea japonica (Thunberg), to provide potential to enhance biological control for aphids in cotton.
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DOI：
10.1371/journal.pone.0044379
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发表时间：
2012
期刊：
影响因子：
3.7
通讯作者：
Ge F
中科院分区：
文献类型：
--
作者：
Ouyang F;Men X;Yang B;Su J;Zhang Y;Zhao Z;Ge F
天敌生物控制在害虫综合治理中起着重要作用。通才昆虫捕食者在农业害虫的调节中提供了重要的生物学服务。本研究的目的是了解多作物农田生态系统中捕食性天敌的产卵偏好、生境选择和取食行为的外显过程，这对于制定和实施害虫综合治理方案至关重要。玉米可以作为天敌的栖息地，并有利于捕食者，为加强棉花害虫的生物控制提供潜力。2008-2010年，通过田间调查和稳定碳同位素分析，研究了龟纹瓢虫在棉花-玉米复合生态系统中的外显过程。田间调查表明，日本蚜成虫产卵前会在寄主植物上寻找高丰度的猎物，间接表明日本蚜成虫更喜欢栖息在玉米植株上，并前往棉花植株上主动捕食蚜虫。在一个食物转换实验中，成虫的δ 13 C值发现，个体甲虫正在从以玉米或棉花饲养的蚜虫为基础的C3-食物转换到以C4为基础的食物，并在一周内开始反映其新的C4资源的同位素比率。在6月、7月和8月，约80%-100%的玉米中的日本拟谷盗成虫的食物来源于基于C3的资源，而在9月，约80%的食物来源于基于C4的资源。结果表明，玉米可以作为一个栖息地或避难源的捕食性甲虫，P. japonica，并有利于捕食者提供潜在的，以加强生物防治棉花害虫。
Biological control provided by natural enemies play an important role in integrated pest management. Generalist insect predators provide an important biological service in the regulation of agricultural insect pests. Our goal is to understand the explicit process of oviposition preference, habitat selection and feeding behavior of predators in farmland ecosystem consisting of multiple crops, which is central to devising and delivering an integrated pest management program. The hypotheses was that maize can serve as habitat for natural enemies and benefits predators to provide potential to enhance biological control for pest insects in cotton. This explicit process of a predatory beetle, Propylea japonica, in agricultural ecosystem composed of cotton and maize were examined by field investigation and stable carbon isotope analysis during 2008–2010. Field investigation showed that P. japonica adults will search host plants for high prey abundance before laying eggs, indicating indirectly that P. japonica adults prefer to inhabit maize plants and travel to cotton plants to actively prey on aphids. The δ13C values of adult P. japonica in a dietary shift experiment found that individual beetles were shifting from a C3- to a C4-based diet of aphids reared on maize or cotton, respectively, and began to reflect the isotope ratio of their new C4 resources within one week. Approximately 80–100% of the diet of P. japonica adults in maize originated from a C3-based resource in June, July and August, while approximately 80% of the diet originated from a C4-based resource in September. Results suggest that maize can serve as a habitat or refuge source for the predatory beetle, P. japonica, and benefits predators to provide potential to enhance biological control for insect pests in cotton.
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影响因子：
2.7
作者：
Crist, TO;Pradhan-Devare, SV;Summerville, KS
通讯作者：
Summerville, KS
影响因子：
2.7
作者：
Gratton, C;Forbes, AE
通讯作者：
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影响因子：
1.7
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通讯作者：
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影响因子：
2.7
作者：
PETELLE, M;HAINES, B;HAINES, E
通讯作者：
HAINES, E
影响因子：
2.2
作者：
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Winemiller, KO