The impact of environmental heterogeneity on the gut microbiota of Holotrichia parallela larvae (Coleoptera: Scarabaeidae)

HUANG Shengwei; ZHANG Hongyu

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The impact of environmental heterogeneity on the gut microbiota of Holotrichia parallela larvae (Coleoptera: Scarabaeidae)

HUANG Shengwei 1 #,ZHANG Hongyu 2 *

1.State Key Laboratory of Agricultural Microbiology, WuHan 430070

2. Institute of Urban and Horticultural Pests, Wuhan, 430070

*Correspondence author

#Submitted by

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Funding: Specialized Research Fund for the Doctoral Program of Higher Education of China （No.No. 200805040010）

Opened online:19 January 2012

Accepted by: none

Citation: HUANG Shengwei,ZHANG Hongyu.The impact of environmental heterogeneity on the gut microbiota of Holotrichia parallela larvae (Coleoptera: Scarabaeidae)[OL]. [19 January 2012] http://en.paper.edu.cn/en_releasepaper/content/4461358

In this paper, we demonstrated the composition and diversity of microbial communities in hindgut of Holotrichia parallela larvae, and investigate how did intestine microbial communities respond to environmental heterogeneity. Methods: Extract total DNA of gut bacteria, construct clone libraries of 16S rDNA, and DGGE was performed to analyze the clone libraries. Sequencing and phylogenetic analysis were performed to determine the difference of intestine microbial communities among different instars. Results: Firmicutes and Proteobacteria were the major phyla of the hindgut microbiota. Bacterial diversity (Chao1 and Shannon indices) and community structure varied across the sampled populations, and the observed variation can be explained by environmental parameters of the locations where the populations were sampled. Conclusions: Our results suggest that the gut's bacterial community changes in response to environmental heterogeneity, possibly to meet the host's ecological needs or physiological demands.

Keywords:Agricultural Entomology and Pest Control; gut microbiology; environmental parameters; PCR-DGGE; White grub

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