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5 March 2021 Habitat Associations of Carrion Beetles (Coleoptera: Silphidae) Across a Full Annual Cycle
Emmy L. Engasser, Rachel L. Stone, Mary Liz Jameson
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Abstract

Necrophagous insects play an important role in decomposition and nutrient recycling of decomposing vertebrates. Ecological studies of carrion-associated beetles enhance forensic investigations by providing information about community assemblages and predictable patterns of succession. However, lack of standardized protocols that include replication, spatial scale, and phenology reduce detection of patterns and predictions. To address these gaps and examine the influence of habitat (woodlands vs grasslands) and abiotic factors on carrion beetle (Coleoptera: Silphidae) communities, we developed an experimental approach from broad to finer scale located within the Kansas Flint Hills across a full annual cycle (12 contiguous months). In total, 3,333 adult carrion beetles in nine species were collected from pitfall traps baited with rat carrion over thirteen 4-wk collecting periods. PERMANOVA and NMDS demonstrate that the silphid beetle community was significantly different in species composition between grassland and woodland habitats, but communities did not differ significantly in overall mean abundance, mean species richness, or mean species diversity. Two species exhibited strong habitat associations; one associated with grassland habitat (Nicrophorus marginatus F.) and one with woodland habitat (Nicrophorus orbicollis Say). Our results reveal that habitat associations of silphid beetles can be useful in forensic investigations by determining corpse relocation and in ecological studies that explore niche filtering.

© The Author(s) 2021. Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.
Emmy L. Engasser, Rachel L. Stone, and Mary Liz Jameson "Habitat Associations of Carrion Beetles (Coleoptera: Silphidae) Across a Full Annual Cycle," Environmental Entomology 50(3), 605-614, (5 March 2021). https://doi.org/10.1093/ee/nvab011
Received: 14 July 2020; Accepted: 12 January 2021; Published: 5 March 2021
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KEYWORDS
carrion ecology
community ecology
forensic entomology
indicator species
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