2020
DOI: 10.3389/fmicb.2020.01698
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Diversity and Composition of the Gut Microbiota in the Developmental Stages of the Dung Beetle Copris incertus Say (Coleoptera, Scarabaeidae)

Abstract: Dung beetles are holometabolous insects that feed on herbivorous mammal dung and provide services to the ecosystem including nutrient cycling and soil fertilization. It has been suggested that organisms developing on incomplete diets such as dungs require the association with microorganisms for the synthesis and utilization of nutrients. We describe the diversity and composition of the gut-microbiota during the life cycle of the dung beetle Copris incertus using 16S rRNA gene sequencing. We found that C. incer… Show more

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Cited by 51 publications
(43 citation statements)
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“…Similar examples of decreasing microbiome diversity can be found throughout the lifecycle of some holometabolous insects, e.g., dung beetles [94] and cabbage flies [95]. For holometabolous insects, ontogenetic changes in gut bacterial communities are generally explained by two main factors: the substantial remodelling of the gastrointestinal tract during metamorphosis [89] and different dietary needs between larvae and adults [94]. Although hemimetabolous Triatominae depend on a blood-based diet throughout their entire development, their preferences for accessory feeding strategies, especially haemolymphagy and coprophagy, may decrease over time and thus limit opportunities for any microbiome enrichment.…”
Section: Losing Diversity: the Main Ontogenetic Shift In Microbiome Csupporting
confidence: 53%
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“…Similar examples of decreasing microbiome diversity can be found throughout the lifecycle of some holometabolous insects, e.g., dung beetles [94] and cabbage flies [95]. For holometabolous insects, ontogenetic changes in gut bacterial communities are generally explained by two main factors: the substantial remodelling of the gastrointestinal tract during metamorphosis [89] and different dietary needs between larvae and adults [94]. Although hemimetabolous Triatominae depend on a blood-based diet throughout their entire development, their preferences for accessory feeding strategies, especially haemolymphagy and coprophagy, may decrease over time and thus limit opportunities for any microbiome enrichment.…”
Section: Losing Diversity: the Main Ontogenetic Shift In Microbiome Csupporting
confidence: 53%
“…However, the relationship between ontogeny and microbiome composition has not been investigated in other hemimetabolous bloodfeeding insects (bed bugs or lice [21];), making generalisable conclusions between biologically similar taxa elusive. Similar examples of decreasing microbiome diversity can be found throughout the lifecycle of some holometabolous insects, e.g., dung beetles [94] and cabbage flies [95]. For holometabolous insects, ontogenetic changes in gut bacterial communities are generally explained by two main factors: the substantial remodelling of the gastrointestinal tract during metamorphosis [89] and different dietary needs between larvae and adults [94].…”
Section: Losing Diversity: the Main Ontogenetic Shift In Microbiome Cmentioning
confidence: 71%
“…Holometabolous insects revert to an almost-axenic state during pupation and some of the microbiota is acquired anew by adults from the environment after emergence [ 8 , 14 , 15 , 62 , 63 , 64 , 65 ]. In some species, adults may harbor a very distinct microbiota than the immature stages [ 10 , 11 , 12 , 66 , 67 , 68 , 69 ] or acquire a very similar microbiota from the environment or conspecifics [ 13 , 70 , 71 ]. In contrast, in hemimetabolous insects, microbes that are acquired after hatching can be maintained for a lifetime [ 8 , 9 ].…”
Section: Insect–microbe Symbiosesmentioning
confidence: 99%
“…Whereas nymphs of hemimetabolous insects may carry their microbiota from early nymphal stages through to the adult stages [ 8 , 9 ], the transformation from larva–pupa–adult in holometabolous insects involves the breakdown of the larval GI tract and the construction of the adult GI tract. During this metamorphosis, there is a high expression of antimicrobial compounds that eliminate most gut bacterial symbionts [ 8 , 10 , 11 ], and can lead to the establishment of a different microbiome in adults [ 12 ]. Adult holometabolous insect may need to reacquire most of their microbiota [ 11 , 13 , 14 ] or to develop strategies to avoid the elimination of existing microbes during molting [ 15 , 16 , 17 ].…”
Section: Introductionmentioning
confidence: 99%
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