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An in-depth description of head morphology and mouthparts in larvae of the black soldier fly Hermetia illucens.
Arthropod Structure & Development ( IF 2 ) Pub Date : 2020-08-05 , DOI: 10.1016/j.asd.2020.100969
Daniele Bruno 1 , Teresa Bonacci 2 , Marcella Reguzzoni 3 , Morena Casartelli 4 , Annalisa Grimaldi 5 , Gianluca Tettamanti 5 , Pietro Brandmayr 2
Affiliation  

The larvae of the black soldier fly (BSF) Hermetia illucens are increasingly being used for waste management purposes given their ability to grow on a wide range of organic decaying materials. Although significant efforts have been spent to improve the mass rearing of BSF larvae on specific substrates and their bioconversion capability, little is known about the biology of this insect, especially with regards to the digestive system.

In this study, we analyzed the morphology of the head and buccal apparatus of H. illucens larvae by using optical and scanning electron microscopy, evaluating the different mouthparts and their modifications during larval development.

Our analysis showed that the larval head of H. illucens presents similarities to those of campodeiform insect larvae, whereas the mandibular-maxillary complex represents a food intake solution typical of Stratiomyidae that enables BSF larvae to ingest semiliquid food. The mouthparts resemble a “tunnel boring machine”, where the hypopharynx separates finer organic particles from coarser and inorganic ones.



中文翻译:

深入描述了黑士兵苍蝇Hermetia illucens的幼虫的头部形态和口器。

由于黑士兵蝇(BSF)Hermetia illucens的幼虫能够在多种有机腐烂材料上生长,因此它们的幼虫正越来越多地用于废物管理。尽管已花费大量的努力来改善BSF幼虫在特定底物上的大量繁殖及其生物转化能力,但对这种昆虫的生物学知之甚少,尤其是在消化系统方面。

在这项研究中,我们通过光学和扫描电子显微镜分析了H. illucens幼虫的头和颊器的形态,评估了不同的口器及其在幼虫发育过程中的修饰。

我们的分析表明,H。illucens的幼虫头部与形昆虫幼虫具有相似性,而下颌-上颌复合体代表Stratiomyidae的典型食物摄取溶液,可使BSF幼虫摄取半流质食物。口器类似于“隧道钻孔机”,其中下咽将较细的有机颗粒与较粗的和无机的颗粒分离。

更新日期:2020-08-05
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