Differences in three instars of four carrion nitidulids (Coleoptera, Nitidulidae, Nitidula and Omosita) revealed using SEM

IF 1.7 3区 农林科学 Q2 ENTOMOLOGY Arthropod Structure & Development Pub Date : 2023-12-18 DOI:10.1016/j.asd.2023.101317
Gengwang Hu , Chao Liu , Runze Zhang , Liangliang Li , Shipeng Shao , Ruonan Zhang , Yundi Gao , Yi Guo , Ya Yang , Yu Wang , Luyang Tao
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Abstract

The genera Omosita and Nitidula from the family Nitidulidae, are often reported to be associated with rotten animal carcasses. However, morphological descriptions of their larval stages are limited and are usually only from the third instar larvae, which does not provide enough systematic data. In this study, the overall structure of three instar larvae from the four Nitidulidae species was compared using optical microscopy, and the resolution was not satisfactory. To compensate, a large number of structures and organs were observed by scanning electron microscopy (SEM). Results showed that the number and distribution of chaetotaxy in different parts, including the macrosetae, setae, and microtrichia, have important identification values between the genera, species, and even instars. We also discuss the possible role of microtrichia in the biology of Nitidulidae larvae. Additionally, we described the number and types of sensilla in three sensory organs, and the morphologic parameters of the head capsule and urogomphi as determined by SEM images, are provided. An identification key with application value for storage products and forensic entomology was also compiled.

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利用扫描电子显微镜揭示四种腐尸硝虫(鞘翅目,硝虫科,硝虫属和 Omosita)三个蜕期的差异
据报道,腐臭蝇科的Omosita属和Nitidula属经常与腐烂的动物尸体有关。然而,对其幼虫阶段的形态描述非常有限,而且通常只有第三龄幼虫的形态描述,无法提供足够的系统数据。本研究使用光学显微镜比较了四种 Nitidulidae 的三龄幼虫的整体结构,分辨率并不理想。为了弥补这一不足,我们使用扫描电子显微镜(SEM)观察了大量的结构和器官。结果表明,不同部位(包括大刚毛、刚毛和小刚毛)的序列数量和分布在属、种甚至龄期之间都具有重要的鉴别价值。我们还讨论了微立克次体在 Nitidulidae 幼虫生物学中可能发挥的作用。此外,我们还描述了三个感觉器官中感觉器的数量和类型,并提供了通过扫描电镜图像确定的头囊和尿囊的形态参数。此外,我们还编制了一个具有贮藏产品和法医昆虫学应用价值的识别密钥。
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来源期刊
CiteScore
3.50
自引率
10.00%
发文量
54
审稿时长
60 days
期刊介绍: Arthropod Structure & Development is a Journal of Arthropod Structural Biology, Development, and Functional Morphology; it considers manuscripts that deal with micro- and neuroanatomy, development, biomechanics, organogenesis in particular under comparative and evolutionary aspects but not merely taxonomic papers. The aim of the journal is to publish papers in the areas of functional and comparative anatomy and development, with an emphasis on the role of cellular organization in organ function. The journal will also publish papers on organogenisis, embryonic and postembryonic development, and organ or tissue regeneration and repair. Manuscripts dealing with comparative and evolutionary aspects of microanatomy and development are encouraged.
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