...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Animal biology >Use of the dart apparatus by the hermaphroditic land snail Polymita muscarum (Lea, 1834)
【24h】

Use of the dart apparatus by the hermaphroditic land snail Polymita muscarum (Lea, 1834)

机译：雌雄同体蜗牛Polymita muscarum使用飞镖装置（Lea，1834年）

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Many species of pulmonate land snails are equipped with one or more so-called "love darts". Even though the number and shape of these calcareous darts vary considerably between species, dart use has only been investigated in very few species. Here, we redescribe the mating behaviour of Polymita muscarum because previous reports did not include the use of the dart apparatus. Mating in this hermaphroditic land snail can be divided into three stages: courtship, copulation and post-copulatory activity. During courtship, full eversion of the genital atrium is reached, thus exposing the sensitive zone, genital lobes and dart apparatus. We observed that P muscarum pushes the everted dart apparatus repeatedly onto different parts of the partner's body and does not lose its dart after stabbing. Dissected specimens had a single, slender dart with a round base, a broad corona and a circular cross-section. We propose that the morphology of P muscarum's dart is consistent with the idea of simple darts needing to be stabbed more often in order to increase the transfer of mucus, which contains a biologically active substance (i.e. allohormone) that enhances the chances of paternity. Besides adding to the growing diversity in the use of love darts in land snails, these findings contribute to the understanding of the evolution of this peculiar reproductive act.
机译：许多种类的肺蜗牛都装有一个或多个所谓的“爱情飞镖”。尽管这些钙质飞镖的数量和形状在不同物种之间差异很大，但仅在极少数物种中研究了飞镖的使用。在这里，由于以前的报道并未包括飞镖装置的使用，因此我们重新描述了香菇的交配行为。在这种雌雄同体的蜗牛中交配可分为三个阶段：求爱，交配和交配后活动。在求爱过程中，生殖器心房完全外翻，从而暴露了敏感区，生殖器叶和飞镖装置。我们观察到，穆斯卡鲁姆（P muscarum）反复将飞镖装置推到伴侣身体的不同部位，并且在刺伤后不会失去飞镖。解剖后的标本有一个细长的飞镖，飞镖的底部呈圆形，宽的电晕，截面为圆形。我们认为P穆斯卡鲁姆镖的形态与为了增加粘液的转移而需要更频繁地刺入简单的飞镖的想法是一致的，粘液中含有一种具有生物活性的物质（即异源激素），可以增加亲子鉴定的机会。这些发现除了增加了在田螺中使用飞镖的多样性之外，还有助于人们了解这种特殊生殖行为的演变。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号