The health and diversity of plant-feeding insects are strictly linked to their host plants and mutualistic symbionts. However, the study of bacterial symbionts within different insects on the same plant lineage is very limited. This study aimed to investigate the bacterial diversity in insect samples that exclusively feed on , representing three insect orders, Hemiptera, Lepidoptera, and Blattodea, each exhibiting distinct dietary preferences. The bacterial community was predominantly composed of , , , , and . The study found significant variations in symbiotic organisms among three insect orders: hemipterans had , lepidopterans had , and blattodean had . Furthermore, the dietary preferences of these insects played a pivotal role in shaping the symbiotic relationship of insects. are prevalent in sap feeders, dominate in stem feeders, and are abundant in leaf feeders. Seasonal influences also affect bacterial symbionts in , with present exclusively in winter. We also observed that the bacterial composition varies across all samples, but their core functions appear to be consistent. This highlights the complex relationship between host phylogeny and diet, with phylogeny being the primary driver, shaping adaptations to specialized diets.
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| http://dx.doi.org/10.3390/insects15030187 | DOI Listing |
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