Comparison of chemosensilla in three phytoseiid mites with different feeding habits

IF 1.3 3区农林科学 Q2 ENTOMOLOGY

Systematic and Applied Acarology Pub Date : 2023-11-24 DOI:10.11158/saa.28.11.1

Yaozong Su, Jiaxing Wei, Bo Zhang, Xuenong Xu

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引用次数: 0

Abstract

Abstract Phytoseiidae comprised over 2000 described species with different feeding habits. However, the mechanisms of food selection were virtually unknown in most phytoseiid mites. To explore the potential mechanism of odor perception, we compared the type and number of chemosensilla on the tarsi of legs and pedipalps by scanning and transmission electron microscopy in three representative predatory mites, i.e., Phytoseiulus persimilis (specialized predator of Tetranychus), Neoseiulus californicus (selective predator of tetranychid mites), and Amblyseius swirskii (generalist predator). All three species had two types of putatively olfactory sensilla, with a porous vs. grooved surface on the tip of the first pair of legs. Of these, five porous setae were found in each of the three species of predatory mites studied. However, only one grooved seta was found at the tip of the first pair of legs in P. persimilis, and two in A. swirskii and N. californicus. In addition, the pedipalp has nine grooved setae, which were hypothesized to be contact chemosensilla in each of the three species. No porous setae were found on either pedipalp or the other three pairs of legs, i.e., leg II, III and IV. Additionally, we provided a new chaetotactic notation for the tarsus of leg I by considering the type and number of setae based on our observation of the three species of Phytoseiidae studied.

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三种取食习性不同的植物螨的化感作用比较

摘要植物螨科有 2000 多个已描述的物种，它们具有不同的取食习性。然而，大多数植物螨的食物选择机制几乎不为人知。为了探索气味感知的潜在机制，我们通过扫描和透射电子显微镜比较了三种具有代表性的捕食螨，即Phytoseiulus persimilis（专门捕食四膜螨）、Neoseiulus californicus（选择性捕食四膜螨）和Amblyseius swirskii（综合捕食者）腿跗蹠和足跗蹠上化学感器的类型和数量。这三个物种都有两种类型的假定嗅觉感受器，第一对腿的顶端分别有多孔和沟纹表面。其中，在所研究的三种捕食螨中，每种都发现了五个多孔刚毛。然而，在 P. persimilis 的第一对腿的顶端只发现了一个沟状刚毛，在 A. swirskii 和 N. californicus 的第一对腿的顶端发现了两个沟状刚毛。此外，在这三个物种中，每个物种的脚掌都有 9 根沟槽状刚毛，据推测这些刚毛是接触化学感器。在两只脚掌和其他三对脚（即第二、第三和第四对脚）上均未发现多孔刚毛。此外，我们还根据对所研究的三个物种的观察，考虑了刚毛的类型和数量，为Ⅰ腿的跗蹠提供了一个新的序列标记。

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来源期刊

Systematic and Applied Acarology ENTOMOLOGY-

CiteScore

2.20

自引率

33.30%

发文量

152

期刊介绍： Systematic and Applied Acarology (SAA) is an international journal of the Systematic and Applied Acarology Society (SAAS). The journal is intended as a publication outlet for all acarologists in the world. There is no page charge for publishing in SAA. If the authors have funds to publish, they can pay US$20 per page to enable their papers published for open access. SAA publishes papers reporting results of original research on any aspects of mites and ticks. Due to the recent increase in submissions, SAA editors will be more selective in manuscript evaluation: (1) encouraging more high quality non-taxonomic papers to address the balance between taxonomic and non-taxonomic papers, and (2) discouraging single species description (see new special issues for single new species description) while giving priority to high quality systematic papers on comparative treatments and revisions of multiple taxa. In addition to review papers and research articles (over 4 printed pages), we welcome short correspondence (up to 4 printed pages) for condensed version of short papers, comments on other papers, data papers (with one table or figure) and short reviews or opinion pieces. The correspondence format will save space by omitting the abstract, key words, and major headings such as Introduction.