Aedeagal sensilla of Agelastica alni (Coleoptera, Chrysomelidae, Galerucinae).

IF 1.3 3区 生物学 Q2 ZOOLOGY
ZooKeys Pub Date : 2025-09-19 eCollection Date: 2025-01-01 DOI:10.3897/zookeys.1252.148748
Michael Schmitt
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引用次数: 0

Abstract

The intromittent part - the median lobe - of the male copulatory organ - the aedeagus - of beetles is strongly sclerotised and so could give the impression of being just a rigid tube, not providing any sensory input to the male beetle. However, it has already been shown that in many beetle species, the median lobe bears sensilla of different types and in different densities. Here, the morphology of the cuticular elements of putative sensilla on the median lobe of the alder leaf beetle, Agelastica alni (Linnaeus, 1758) and their spatial distribution on this organ are described. There are especially two types of sensilla located in large numbers on the median lobe. One is mamilliform and is probably a bimodal uniporous sensillum, the other is cup-shaped with a pore on top suggesting a contact chemosensor. In addition, there are numerous - presumably mechanosensitive - sensilla basiconica. The density of these sensilla is higher apically and on the lower side than basally and on the upper side of the median lobe. These findings confirm earlier ideas that the male copulatory organs in beetles are not sensory-blind but are sensitive to mechanical and chemical stimuli.

Aedeagal银针蝇的感受器(鞘翅目,金针蝇科,银针蝇科)。
雄性蜣螂的交配器官,也就是喙的中间部分,是坚硬的,因此给人的印象就是一个坚硬的管子,不给雄性蜣螂提供任何感官输入。然而,已经有研究表明,在许多种类的甲虫中,中间叶有不同类型和不同密度的感受器。本文描述了桤木叶甲虫Agelastica alni (Linnaeus, 1758)中叶上被认为是感受器的表皮成分的形态及其在该器官上的空间分布。特别是有两种类型的感受器大量分布在正中叶。一个是乳状的,可能是一个双峰单孔感受器,另一个是杯状的,顶部有一个孔,表明是一个接触式化学传感器。此外,还有大量的基本感受器(可能是机械敏感的)。这些感受器的密度在顶端和下侧比在基部和中叶的上侧高。这些发现证实了早期的观点,即甲虫的雄性交配器官不是感觉盲的,而是对机械和化学刺激敏感的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
ZooKeys
ZooKeys 生物-动物学
CiteScore
2.70
自引率
15.40%
发文量
400
审稿时长
3 months
期刊介绍: ZooKeys is a peer-reviewed, open-access, online and print, rapidly produced journal launched to support free exchange of ideas and information in systematic zoology, phylogeny and biogeography. All papers can be freely copied, downloaded, printed and distributed at no charge. Authors and readers are thus encouraged to post the pdf files of published papers on homepages or elsewhere to expedite distribution. There is no charge for color.
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