Abundance of Antennal Chemosensilla in Two Parasitoid Wasps with Different Degree of Host Specificity May Explain Sexual and Species Differences in Their Response to Host-Related Volatiles
Abundance of Antennal Chemosensilla in Two Parasitoid Wasps with Different Degree of Host Specificity May Explain Sexual and Species Differences in Their Response to Host-Related Volatiles
复制标题
两种具有不同程度宿主特异性的寄生蜂触角化学感受器的丰度可能解释了它们对宿主相关挥发物反应的性别和物种差异
DOI：
10.1002/jemt.20974
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发表时间：
2011-10-01
影响因子：
2.5
通讯作者：
Fadamiro, Henry Y.
中科院分区：
文献类型：
--
作者：
Das, Prithwiraj;Chen, Li;Fadamiro, Henry Y.
内寄生蜂（Hytera：茧蜂科），Microplitis croceipes（专家）和Cotesia marginiventris（通才）是鳞翅目幼虫的寄生蜂，其寄主特异性程度不同。我们小组以前的研究报告了两种寄生蜂对寄主相关挥发物的反应的关键差异。为了可能理解我们的结果的基础上，我们比较了丰富的触角感器在两种寄生蜂的性别使用扫描电子显微镜和银染技术。这两个物种的男性有相对较长的触角比同种女性。两种植物的感器主要有5种类型：刺形感器（无孔感器）、刺形感器（无孔感器）、刺形感器（无孔感器）和刺形感器。dea（nonporous），s.盾形目（多孔的），s. basiconica（2种类型，1型具顶孔，2型具壁孔）和s.腔锥（无孔）。银染证实s细胞壁有多个孔。placodea和s. basiconica类型2和s上的终端开口。basiconica 1型，表明化学感受功能。在一般情况下，这两个假定的化学感受器类型，S。placodea和s. basiconica、M. croceipes（specialist）比C. marginiventris（多面手），男女都是如此。性别比较，S placodea和s. M. croceipes男性相比，女性。相反，S。雌性C. marginiventris比男性。这些结果可以解释两种寄生蜂对寄主相关挥发物的反应的差异，并讨论了感器类型在寄生蜂行为生态学中的可能作用。Microsc. Res. Tech. 74：900-909，2011. (C)2010 Wiley-Liss，Inc.
The endoparasitic wasps (Hymenoptera: Braconidae), Microplitis croceipes (specialist), and Cotesia marginiventris (generalist) are parasitoids of lepidopteran larvae that differ in their degree of host specificity. Previous studies by our group have reported key differences in the response of both parasitoids to host-related volatiles. To possibly understand the basis for our results, we compared the abundance of antennal sensilla in both sexes of both parasitoid species using scanning electron microscopy and silver-staining techniques. Males of both species had relatively longer antennae than conspecific females. Five major sensilla types were recorded in both species: sensilla chaetica (nonporous), s. trichodea (nonporous), s. placodea (multiporous), s. basiconica (two types, type 1 with terminal opening and type 2 with wall pores), and s. coeloconica (nonporous). Silver staining confirmed multiple pores on the walls of s. placodea and s. basiconica type 2 and terminal openings on s. basiconica type 1, suggesting chemosensory function. In general, both putative chemosensilla types, s. placodea and s. basiconica, were more abundant in M. croceipes (specialist) than in C. marginiventris (generalist), and this was true for both sexes. Comparing the sexes, s. placodea and s. trichodea were significantly more abundant in M. croceipes males compared to females. In contrast, s. placodea was relatively more abundant in female C. marginiventris than in males. These results may explain the reported differences in the responses of both parasitoid species to host-related volatiles and are discussed in relation to the possible roles of the sensilla types in the behavioral ecology of the parasitoids. Microsc. Res. Tech. 74:900-909, 2011. (C) 2010 Wiley-Liss, Inc.