Abstract

The structure of olfactory sensilla was compared in amphipods from the Baikal region, namely in nine Baikal species (Ommatogammarus carneolus melanophthalmus Bazikalova, 1945; O. flavus (Dybowsky, 1874); O. albinus (Dybowsky, 1874); Eulimnogammarus verrucosus (Gerstfeldt, 1858); E. vittatus (Dybowsky, 1874); E. cyaneus (Dybowsky, 1874); Acanthogammarus godlewskii (Dybowsky, 1874); Pallasea cancelloides (Gerstfeldt, 1858); and Gmelinoides fasciatus (Stebbing, 1899)) and a Holarctic species, Gammarus lacustris Sars, 1863. The results of the study demonstrate the comparison of aesthetasc lengths and numbers, as well as SEM images of the aesthetascs for Baikal amphipods for the first time. Our results confirm and complement the previously obtained data on the number of aesthetascs per segment for three deep-water Baikal amphipod species of the genus Ommatogammarus. Within the studied deep-water amphipods with different habitat depth ranges, Ommatogammarus albinus (Dybowsky, 1874), inhabiting maximum habitat depths, have the highest number of aesthetascs. The size and number of aesthetascs did not differ between males and females of the littoral Eulimnogammarus verrucosus (Gerstfeldt, 1858) and deep-water species. The littoral amphipods were shown to have more antennae I equipped with mechanoreceptors than deep-water amphipods.

中文翻译：

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贝加尔湖地区滨海和深水片脚类动物嗅觉结构的比较

摘要

对贝加尔湖地区的片脚类动物，即九种贝加尔湖物种（ Ommatogammarus carneolus melanolookingmus Bazikalova, 1945; O. flavus (Dybowsky, 1874); O. albinus (Dybowsky, 1874); Eulimnogammarus verrucosus (Gerstfeldt, 1874) ）的嗅觉感受器结构进行了比较。 1858)；E. vittatus (Dybowsky, 1874)；E.cyaneus (Dybowsky, 1874)；Acanthogammarus godlewskii (Dybowsky, 1874)；Pallasea cancelloides (Gerstfeldt, 1858)；和Gmelinoides fasciatus (Stebbing, 1899)) 和全北种, Gammarus lacustris Sars, 1863。研究结果首次展示了贝加尔湖端足类动物审美节长度和数量的比较，以及审美节的SEM图像。我们的结果证实并补充了先前获得的关于贝加尔湖Ommatogammarus属三种深水片脚类物种每节审美数量的数据。在所研究的不同栖息地深度范围的深水片脚类动物中，栖息于最大栖息地深度的Ommatogammarus albinus (Dybowsky, 1874) 具有最高的审美数量。沿海Eulimnogammarus verrucosus (Gerstfeldt, 1858) 和深水物种的雄性和雌性审美能力的大小和数量没有差异。研究表明，沿海片足类动物比深水片足类动物拥有更多配备机械感受器的触角。