Clemson University, Poole Agricultural Center, Clemson, SC.
J Insect Sci. 2020 Jul 1;20(4). doi: 10.1093/jisesa/ieaa084.
The diversity and ecological variety of Holometabola foregrounds a wide array of dynamic symbiotic relationships with gut-dwelling bacteria. A review of the literature highlights that holometabolous insects rely on both obligate bacteria and facultative bacteria living in their guts to satisfy a number of physiological needs. The driving forces behind these differing relationships can be hypothesized through the scrutiny of bacterial associations with host gut morphology, and transmission of bacteria within a given host taxon. Our knowledge of the evolution of facultative or obligate symbiotic bacteria in holometabolan systems is further enhanced by an assessment of the various services the bacteria provide, including nutrition, immune system health, and development. The diversity of Holometabola can thus be examined through an assessment of known bacterial partnerships within the orders of Holometabola.
昆虫的多样性和生态多样性突显了与肠道共生细菌之间广泛的动态共生关系。文献综述强调,完全变态昆虫依靠生活在其肠道内的专性细菌和兼性细菌来满足许多生理需求。通过仔细研究细菌与宿主肠道形态的关联以及在特定宿主分类群内细菌的传播,可以假设这些不同关系的驱动力。通过评估细菌提供的各种服务,包括营养、免疫系统健康和发育,我们对完全变态系统中兼性或专性共生细菌的进化有了进一步的了解。因此,可以通过评估完全变态目中已知的细菌伙伴关系来研究完全变态类的多样性。