The mucus of a land snail love-dart suppresses subsequent matings in darted individuals.
The mucus of a land snail love-dart suppresses subsequent matings in darted individuals.
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陆生蜗牛的粘液会抑制被射箭个体随后的交配。
DOI：
10.1016/j.anbehav.2012.12.026
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发表时间：
2013
期刊：
影响因子：
2.5
通讯作者：
S. (2013)
中科院分区：
文献类型：
--
作者：
Kimura;K.;Shibuya;K.;Chiba;S. (2013)
我们研究了同时雌雄同体的陆生蜗牛的交配行为，即所谓的射爱镖，蜗牛将其爱镖射入其交配伴侣。研究表明，飞镖会将一些粘液涂层转移到伴侣的血液中，飞镖上的粘液会增加精子的储存量。然而，粘液是否以其他方式影响精子受体尚不清楚。我们测试了这一假设，即粘液转移的精子捐助者在飞镖轴承蜗牛Euhadra quaesita抑制随后的交配，并促进产卵在他们的合作伙伴。我们发现，交配间隔较长的刺伤蜗牛比没有刺伤，蜗牛对注射粘液随后交配往往比对照组。产卵的蜗牛数量在治疗之间没有差异。这些发现表明，飞镖粘液可以抑制其受体随后的交配。捐精者通过射出涂有镖粘液的爱镖，可能在与以前和未来的捐精者的精子竞争中具有优势。
We studied a mating behaviour of simultaneously hermaphroditic land snails, the so-called shooting of love-darts, whereby a snail drives its love-dart(s) into its mating partner. It has been shown that the dart transfers some of its mucous coating into the partner's blood and that mucus from the dart increases sperm storage. However, whether the mucus affects the sperm recipient in other ways is unclear. We tested the hypothesis that mucus transfer by sperm donors in dart-bearing snails Euhadra quaesita suppresses subsequent matings and promotes oviposition in their partners. We found that the intermating interval was longer in stabbed snails than in ones not stabbed and that snail pairs injected with mucus subsequently mated less often than control pairs. The number of snails that laid eggs did not differ between treatments. These findings show that the dart mucus can suppress subsequent matings in its recipients. Sperm donors may possess advantages in sperm competition with both previous and prospective sperm donors by shooting the love-dart coated with the dart mucus.