Shooting darts: co-evolution and counter-adaptation in hermaphroditic snails.
Shooting darts: co-evolution and counter-adaptation in hermaphroditic snails.
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射击飞镖：雌雄同体蜗牛的共同进化和反适应。
DOI：
10.1186/1471-2148-5-25
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发表时间：
2005-03-30
影响因子：
3.4
通讯作者：
Schulenburg H
中科院分区：
文献类型：
--
作者：
Koene JM;Schulenburg H
两性之间的进化利益冲突往往导致共同进化的军备竞赛，其中包括对一种性别有利但对另一种性别有害的特征的重复竞争，以及后者的反适应。在雌雄同体中，这些对抗性的相互作用至少是一种同等重要的驱动力。在这里，我们调查了两性动物性冲突中最引人注目的例子之一的进化，即所谓的陆蜗牛射爱镖。将这种钙质飞镖刺入伴侣的皮肤最终会增加父子关系。这种特性显然对射手有利，但它会操纵精子在接收器中的储存。因此，可以预期爱镖和精包接收器官之间的军备竞赛。我们进行了详细的28 S核糖体RNA基因序列的系统发育分析飞镖拥有的土地蜗牛物种。Shimodaira-Hasegawa检验和贝叶斯后验概率都拒绝了大多数生殖结构的单系起源，包括爱镖，表明大多数特征重复出现。基于推断的系统发育树，我们计算了不同生殖性状的系统发育独立对比。随后的主成分分析和相关分析表明，这些对比是协变的，这意味着这些性状的相关进化发生。我们的研究代表了第一次全面的比较分析生殖器官的特点，同时雌雄同体。此外，它强烈表明，共同进化的军备竞赛可能是由这些生物体中的性冲突引起的，并在雌雄同体交配系统的进化中发挥关键作用。
Evolutionary conflicts of interest between the sexes often lead to co-evolutionary arms races consisting of repeated arisal of traits advantageous for one sex but harmful to the other sex, and counter-adaptations by the latter. In hermaphrodites, these antagonistic interactions are at least an equally important driving force. Here, we investigate the evolution of one of the most striking examples of sexual conflict in hermaphrodites, the so-called shooting of love-darts in land snails. Stabbing this calcareous dart through the partner's skin ultimately increases paternity. This trait is obviously beneficial for the shooter, but it manipulates sperm storage in the receiver. Hence, an arms race between the love-dart and the spermatophore receiving organs may be expected. We performed a detailed phylogenetic analysis of 28S ribosomal RNA gene sequences from dart-possessing land snail species. Both the Shimodaira-Hasegawa test and Bayesian posterior probabilities rejected a monophyletic origin of most reproductive structures, including the love-dart, indicating that most traits arose repeatedly. Based on the inferred phylogenetic trees, we calculated phylogenetically independent contrasts for the different reproductive traits. Subsequent principal component and correlation analyses demonstrated that these contrasts covary, meaning that correlated evolution of these traits occurred. Our study represents the first comprehensive comparative analysis of reproductive organ characteristics in simultaneous hermaphrodites. Moreover, it strongly suggests that co-evolutionary arms races can result from sexual conflict in these organisms and play a key role in the evolution of hermaphroditic mating systems.
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影响因子：
64.8
作者：
Arnqvist, G;Rowe, L
通讯作者：
Rowe, L
DOI：
10.1139/cjz-78-10-1767
发表时间：
2000-10-01
期刊：
CANADIAN JOURNAL OF ZOOLOGY-REVUE CANADIENNE DE ZOOLOGIE
影响因子：
--
作者：
Baminger, H;Locher, R;Baur, B
通讯作者：
Baur, B
影响因子：
0.8
作者：
Koene, JM;Sundermann, G;Michiels, NK
通讯作者：
Michiels, NK
影响因子：
6.5
作者：
Goldman, N;Anderson, JP;Rodrigo, AG
通讯作者：
Rodrigo, AG
影响因子：
2.9
作者：
Greeff, JM;Michiels, NK
通讯作者：
Michiels, NK