Female mating strategy during precopulatory mate guarding in spider mites
Female mating strategy during precopulatory mate guarding in spider mites
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红蜘蛛交配前守卫期间的雌性交配策略
DOI：
10.1016/j.anbehav.2008.09.030
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发表时间：
2009
期刊：
影响因子：
2.5
通讯作者：
K. Oku
中科院分区：
文献类型：
--
作者：
K. Oku
在一些分类群中，雌性通过使用雄性战斗来间接选择配偶。在Kanzawa蜘蛛Tetranychus kanzawi中，成年雄性守护生殖前安静的雌性。在一项双重选择实验中，更多的雄性首先接近已经有同种雄性守卫的雌性，而不是接近单独的雌性。在进一步的实验中，我研究了在交配前的配偶守卫过程中，哪些因素会吸引雄性。雄性不会被没有处于守护配偶位置的雄性所吸引。相比之下，没有繁殖的个体、未成年的雄性或雌性处于守护配偶的位置时，确实吸引了同种雄性。这些结果表明，任何处于守护配偶位置的同种个体的存在，都会刺激静止的雌性产生吸引雄性的化学物质。守卫的安静的雌性也吸引了捕食性叶螨Neoseiulus emersleyi的注意，但独居的雌性没有注意到。由于N·emersleyi使用化学线索寻找猎物，比独居雌性释放更多化学物质的戒备森严的雌性可能面临更大的危险。然而，雄性并不被以前接触过女性新城疫病毒的守卫的安静的雌性吸引。因此，安静的雌性似乎控制着它们的化学物质的释放，也就是说，戒备森严的静止的雌性释放出一个吸引雄性的信号。当一只以上的雄性试图保护一只雌性时，通常会发生雄性打斗。我讨论了在交配前的交配保护过程中，通过使用雄性引诱信号来促进甘扎伊雌蜂进行间接配偶选择的可能性。
In some taxa, females choose their mates indirectly by using male combat. In the Kanzawa spider mite, Tetranychus kanzawai, adult males guard prereproductive quiescent females. In a dual choice experiment, more males first approached females already guarded by a conspecific male than approached solitary females. In further experiments, I examined which factors attracted males during precopulatory mate guarding. Males were not attracted to males not in a mate-guarding position. In contrast, the presence of a nonbreeding individual, a juvenile male or a female in a mate-guarding position did attract conspecific males. These results suggest that the presence of any conspecific individual in a mate-guarding position stimulates quiescent females to produce chemicals that attract males. Guarded quiescent females also attracted the attention of the predatory mite, Neoseiulus womersleyi, but solitary females did not. Since N. womersleyi search for prey using chemical cues, guarded females that release more chemicals than solitary females are probably in more danger. However, males were not attracted to guarded quiescent females that had been previously exposed to N. womersleyi. Thus, quiescent females appeared to control the release of their chemicals, that is, guarded quiescent females release a male-attractant signal. When more than one male attempts to guard one female, male combat often occurs. I discuss the possibility of indirect mate choice by T. kanzawai females during precopulatory mate guarding facilitated by the use of male-attractant signals.