Mating Behavior, Insemination and Sperm Transfer in the Ground Beetle Carabus insulicola
Mating Behavior, Insemination and Sperm Transfer in the Ground Beetle Carabus insulicola
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地面甲虫 Carabus insulicola 的交配行为、授精和精子转移
DOI：
10.2108/zsj.19.1067
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发表时间：
2002
影响因子：
0.9
通讯作者：
Y. Takami
中科院分区：
文献类型：
--
作者：
Y. Takami
摘要 分析了地面甲虫 Carabus insulicola 的交配行为、授精和精子转移过程。 C. insulicola 具有复杂的生殖器，其中强烈硬化的雄性交配片插入雌性阴道阑尾的交配体中。在交配过程中，我观察到雄性和雌性交配前的挣扎以及射精延迟，这表明存在两性冲突。授精是通过精囊实现的，精囊牢固地粘附在受精囊、总输卵管和阴道阑尾的开口处。交配后精囊溶解，精子在交配后三小时内转移到受精囊内。精子束包含在睾丸和精囊内，但在受精囊中发现了游离精子。
Abstract Mating behavior and the processes of insemination and sperm transfer in the ground beetle Carabus insulicola were analyzed. C. insulicola has elaborate genitalia, in which the strongly sclerotized male copulatory piece is inserted into the female vaginal appendix in copula. During mating, I observed pre-copulatory struggles of males and females, as well as delays in ejaculation, suggesting the presence of intersexual conflicts. Insemination was achieved with a spermatophore, which strongly adhered to the openings of the spermatheca, common oviduct, and vaginal appendix. The spermatophore dissolved after copulation, and sperm were transferred into the spermatheca within three hours after copulation. Sperm bundles were contained within the testes and spermatophores, but free spermatozoa were found in the spermatheca.