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The complete mitochondrial genome of a corpse related necrophagous beetle, Necrodes littoralis (Coleoptera: Silphidae).

ABSTRACT: Necrodes littoralis (Linnaeus, 1758) (Coleoptera: Silphidae) is recognized as an important forensically beetle species. In this study, we report the mitogenome of N. littoralis. The total length of the mitogenome was 17,830bp (GenBank accession no. MW415274). Two ribosomal RNAs, 13 protein-coding genes, 22 transfer RNAs and a non-coding control region were identified. The base composition of N. littoralis was A (39.27%), G (9.49%), T (37.03%), and C (14.21%), respectively. Phylogenetic analysis indicated that N. littoralis is closely related to Diamesus osculans.

SUBMITTER: Jiang Y

PROVIDER: S-EPMC8079010 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Project description:In the central plains of North America, the beetle family Silphidae comprised two subfamilies, Silphinae and Nicrophorinae, differentiated by reproductive behaviors. Silphinae, known as carrion beetles, feed on carrion and fly larvae and produce free-living larvae that receive no parental care. Adult Nicrophorinae, known as burying beetles, prepare a vertebrate carcass into a brood ball and provide biparental care to their offspring. Preparation of a brood ball involves coating the carcass in antimicrobial oral and anal secretions. These secretions contain a community of microbes, referred to as the secretion microbiome, which inhibit carcass microbe succession, preventing normal decomposition. Here, the secretion microbiomes of five species of Nicrophorinae and two species of Silphinae, both sampled from Oklahoma, with additional Nicrophorinae from Nebraska, were characterized using culture-independent analyses to understand and decipher factors shaping diversity and community structure. We identify the core secretion microbiome across Silphidae and show that, while the host subfamily, secretion type, and collection locality had no significant effect on the bacterial community alpha diversity, these factors significantly influenced bacterial community structure. Global and local tests of phylogenetic associations identified 14 genera with phylogenetic signals to the host subfamily and species. Description of the bacterial communities present in silphid secretions furthers our understanding of how these beetles interact with microbes for carcass nutrient processing. Future culture-dependent studies from silphid secretions may identify novel antimicrobials and nontoxic compounds that can act as meat preservatives or sources for antimicrobials.IMPORTANCEThe manuscript explores the secretion bacterial community of carrion and burying beetles of the central plains of North America. A core secretion microbiome of 11 genera is identified. The host subfamily, secretion type, and collection locality significantly affects the secretion microbiome. Future culture-dependent studies from silphid secretions may identify novel antimicrobials and nontoxic compounds that can act as meat preservatives or sources for antimicrobials.

Dataset Information

The complete mitochondrial genome of a corpse related necrophagous beetle, Necrodes littoralis (Coleoptera: Silphidae).

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