Stellate halrs on leaves of a deciduous shrub Viburnumerosum var. punctaturn (Adoxaceae) effectively protect Brevipalpus obovatus (Acari : Tenuipalpidae) eggs from the predator Phytoseius nipponicus (Acari : Phyoseildae)
Stellate halrs on leaves of a deciduous shrub Viburnumerosum var. punctaturn (Adoxaceae) effectively protect Brevipalpus obovatus (Acari : Tenuipalpidae) eggs from the predator Phytoseius nipponicus (Acari : Phyoseildae)
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落叶灌木荚莲属植物Viburnumerosum var. 叶子上的星状花环。
DOI：
10.1007/s10493-012-9648-4
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发表时间：
2013
影响因子：
2.2
通讯作者：
Masahiro Osakabe
中科院分区：
文献类型：
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作者：
Masaaki Sudo;Masahiro Osakabe
草食性假蜘蛛螨brevipalpusobovatusdonnadieu的卵比蜘蛛螨的卵潜伏期长，且不受蛛网的保护。brevipalpusobovatusa通常在寄主叶片毛间的空隙中产卵。我们研究了星状毛对viburumerosumvar的影响。斑叶（VEP）对卵存活的影响。AdultB。在VEP叶盘上引入了obovatusandPhytoseiusnipponicusEhara；eachB。每天检查卵直到孵化。在叶星状毛更为复杂的叶背表面，卵生成活率（63%比42%）高于叶正面。随着蛋龄的增加和大部分蛋的孵化，捕食风险迅速降低。当提供混合龄鸡蛋时，无论鸡蛋龄如何，日本稻瘟虫都捕食鸡蛋。弯曲的星状毛的操纵实验表明，正常的毛发降低了b的捕食风险。obovatuseggs byP.nipponicus。因此，由于星状毛阻碍了对b的搜索，因此可以认为捕食危险降低。倒卵龙卵的植物卵螨。
The eggs of the herbivorous false spider miteBrevipalpusobovatusDonnadieu have a longer incubation period than those of spider mites and are not protected by webs.Brevipalpusobovatusoften lays its eggs in the gaps among the hairs on host leaves. We examined the effects of stellate hairs ofViburnumerosumvar.punctatum(VEP) leaves on the survival ofB.obovatuseggs. AdultB.obovatusandPhytoseiusnipponicusEhara, a generalist predator, were introduced to VEP leaf disks; eachB.obovatusegg was inspected daily until hatching. More eggs (63 vs. 42 %) survived on the abaxial surfaces of VEP leaves, where the stellate hairs are more complicated, than on the adaxial surfaces. Predation hazard decreased rapidly with increasing egg age and a substantial portion of the eggs hatched.Phytoseiusnipponicuspreyed on eggs regardless of egg age when mixed-age eggs were provided. Manipulative experiments with bent stellate hairs showed that the normal hairs reduced the predation risk ofB.obovatuseggs byP.nipponicus. Therefore, the predation hazard was considered to decrease since the stellate hairs hindered the search forB.obovatuseggs by the phytoseiid mite.