Behavioral differences between rotation-resistant and wild-type Diabrotica virgifera virgifera (Coleoptera: Chrysomelidae)
Behavioral differences between rotation-resistant and wild-type Diabrotica virgifera virgifera (Coleoptera: Chrysomelidae)
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DOI：
10.1603/0046-225x-35.4.1049
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发表时间：
2006-08-01
影响因子：
1.7
通讯作者：
Levine, E.
中科院分区：
文献类型：
--
作者：
Knolhoff, L. M.;Onstad, D. W.;Levine, E.
在伊利诺斯州和印第安纳州，西部玉米根虫（Diabrotica virgifera virgifera LeConte）通过在大豆（Glycine max L.梅尔）田间和其他作物与玉米（Zea mays L.）区分抗轮伐期和野生型行为表型的方法是确定抗轮伐期遗传基础的第一步。释放进入和离开生物测定竞技场之间的时间被用作甲虫活性的量度，以区分行为表型。结果表明，D. v.来自作物轮作不再有效的地区的玉米雌虫比来自轮作仍然有效的地区的雌虫更活跃。在2004年和2005年的试验中，甲虫种群的地理来源是一个主要的显着影响。在玉米地里比在实验室里更容易观察到行为差异。结果与假设一致，即对玉米而不是任何特定引诱剂的保真度的损失是旋转阻力的原因。相似环境中甲虫种群之间的行为差异表明，抗轮纹天牛和野生型天牛之间存在遗传差异。v.virgifera，尽管尚未鉴定出特定的一个或多个基因。
In Illinois and Indiana, the western corn rootworm, Diabrotica virgifera virgifera LeConte, circumvents crop rotation as a control measure by ovipositing in soybean (Glycine max L. Merr.) fields and in other crops in rotation with corn (Zea mays L.). A means of distinguishing between rotation-resistant and wild-type behavioral phenotypes is the first step in determining the genetic basis of rotation resistance. The time between release into and departure from a bioassay arena was used as a measure of beetle activity to distinguish between behavioral phenotypes. Results from these assays indicate that D. v. virgifera females from regions where crop rotation is no longer effective are more active than females from regions where rotation remains effective. The geographic source of the beetle population was a main significant effect in trials done in both 2004 and 2005. Behavioral differences were more easily observed in a cornfield rather than in the laboratory. Results were consistent with the hypothesis that a loss of fidelity to corn rather than any particular attractant is the cause of rotation resistance. Behavioral differences between populations of beetles in similar environments suggest that there is a genetic difference between rotation-resistant and wild-type D. v. virgifera, although no specific gene or genes have yet been identified.