Delayed spermatophore removal from the mate’s genitalia in the land snail Euhadra peliomphala.
Delayed spermatophore removal from the mate’s genitalia in the land snail Euhadra peliomphala.
复制标题
陆生蜗牛 Euhadra peliomphala 的精囊从配偶生殖器中被延迟移除。
DOI：
10.1111/bij.12008
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发表时间：
2013
影响因子：
1.9
通讯作者：
S.
中科院分区：
文献类型：
--
作者：
Kimura;K.;Chiba;S.
尽管许多研究表明，雄性生殖器官形态的变化可以影响雄性受精的成功，但在许多情况下，性选择和性冲突的机制导致生殖器形态差异的原因尚不清楚。区分这些机制至少需要了解生殖器官形态影响受精成功的过程。陆地蜗牛的生精器官（SPO）的长度就是一个很好的例子。精子包囊的长度可能对精子包囊向受体生殖道的转移有重要影响。为了验证这一假设，我们在euhadra peliomphala（Pfeiffer, 1850）中研究了在交配后72、84和96小时，精子供体的SPO长度与其精子包囊在精子受体中的位置之间的关系。结果表明，较长的精子需要较长的时间才能到达配子体并开始被消化。这些发现表明，这种精包消化的延迟解释了具有长SPO的蜗牛高受精成功率的机制。
Although many studies have demonstrated that variation in male genital morphology can influence male fertilization success, it remains unclear in many cases which mechanism(s) of sexual selection and sexual conflict produce the morphological divergence of genitalia. Distinguishing between such mechanisms requires, at the very least, information on the process by which genital morphology influences fertilization success. The length of the spermatophore-producing organ (SPO) of the stylommatophoran land snails is a case in point. The length of the spermatophore may have an important influence on the transfer of the spermatophore to the recipient's genital tract. To test this hypothesis, we investigated inEuhadra peliomphala(Pfeiffer, 1850) the relationship between the length of the SPO in sperm donors and the position of their spermatophore in sperm recipients at 72, 84, and 96 h after mating. The results showed that longer spermatophores required longer times to reach a gametolytic organ and to begin to be digested. These findings suggest that this delay in spermatophore digestion explains the mechanism for the high fertilization success shown by snails with a long SPO.