The multifunctional pygidial gland secretion of the Steninae (Coleoptera: staphylinidae): ecological significance and evolution
The multifunctional pygidial gland secretion of the Steninae (Coleoptera: staphylinidae): ecological significance and evolution
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DOI：
10.1007/s00049-012-0118-6
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发表时间：
2013-03-01
期刊：
影响因子：
1.8
通讯作者：
Dettner, Konrad
中科院分区：
文献类型：
--
作者：
Schierling, Andreas;Seifert, Karlheinz;Dettner, Konrad
野甲虫属（Stenus Latreille）和野甲虫属（Dianous Leach）的pygidial腺体分泌物主要由吡啶类、吡啶类生物碱和几种萜类化合物组成。蚂蚁和鱼的双选择生物试验以及琼脂扩散试验表明，分泌的化合物能够阻止捕食者并保护甲虫免受微生物的侵害。此外，甲虫利用这种分泌物在水面上快速移动，这一过程被称为掠食。因此，最初是为了化学保护敏感的无保护的腹部免受捕食者的攻击而发展起来的，最近的Steninae的分泌物可以被认为是多功能的。四种生物碱化合物在分泌物中以不同的构型异构体出现。两个选择测试表明，蚂蚁区分的立体异构体的stenusine，而没有影响可见的细菌在琼脂扩散试验。此外，在Steninae内，生物碱的分泌成分也有进化趋势，因为一些生物碱主要发生在系统发育的基础物种中，而另一些生物碱主要局限于衍生物种。
The pygidial gland secretion of the rove beetle genera Stenus Latreille and Dianous Leach is composed of pyridine and piperidine-derived alkaloids and several terpene compounds. Two-choice bioassays with ants and fish, as well as agar diffusion assays, revealed that the secretion compounds are capable of deterring predators and protecting the beetles from infestation with microorganisms. In addition, the beetles use the secretion for rapid movements on the water surface, a process called skimming. Thus, originally developed to chemically defend the sensitive unprotected abdomen from predator attacks, the secretion of recent Steninae can be designated as multifunctional. Four of the alkaloid compounds occur as different configurational isomers in the secretion. Two-choice tests showed that ants discriminate between stereoisomers of stenusine, while there was no effect visible on bacteria in agar diffusion assays. Furthermore, there are evolutionary trends within the Steninae concerning the secretion composition, as some of the alkaloids primarily occur in phylogenetically basal species, while others are mainly restricted to derived species.