期刊论文详细信息
PeerJ
The role of gut microbiota in the regulation of standard metabolic rate in female Periplaneta americana
article
Paul A. Ayayee1  Andrew Ondrejech2  George Keeney2  Agustí Muñoz-Garcia3 
[1] Department of Biological Sciences, Kent State University;Department of Evolution, Ecology and Organismal Biology, Ohio State University;Department of Evolution, Ecology and Organismal Biology, Ohio State University at Mansfield
关键词: Standard metabolic rate;    Gut microbial assemblage;    Nutritional stress;    Antibiotic;    Periplaneta americana;   
DOI  :  10.7717/peerj.4717
学科分类:社会科学、人文和艺术(综合)
来源: Inra
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【 摘 要 】

Insect gut microbiota contribute significantly to host nutritional ecology. Disrupting insect gut microbial assemblages impacts nutrient provisioning functions, and can potentially affect host standard metabolic rate (SMR), a measure of host energy balance. In this study, we evaluated the effect of disrupting gut microbial assemblages on the SMR of female Periplaneta americana cockroaches fed dog food (DF, high protein/carbohydrate (p/c) ratio), and cellulose-amended dog food (CADF, 30% dog food, 70% cellulose, low p/c ratio) diets, supplemented with none, low, or high antibiotic doses. Bacterial loads decreased significantly between diet types (P = 0.04) and across antibiotic doses (P = 0.04). There was a significant diet type x antibiotic dose interaction on SMR of females on both diets (P = 0.05) by the end of the seven-day experimental period. In CADF-fed females, SMR decreased linearly with decreasing bacterial load. However, SMR of DF-fed females on the low dose was significantly higher than those in the control and high dose groups. This is interpreted as a diet-dependent response by low dose DF-fed females to the loss of nutritional services provided by gut bacteria. Severe reductions in bacterial load at high doses reduced SMR of females on both diet types. This study provides insights into the potential role of gut bacteria as modulators of host energy expenditure under varying dietary conditions.

【 授权许可】

CC BY   

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