Associational Patterns of Scavenger Beetles to Decomposition Stages

Beetles associated with carrion play an important role in recycling organic matter in an ecosystem. Four experiments on decomposition, one per season, were conducted in a semirural area in Bahía Blanca, Argentina. Melyridae are reported for the first time of forensic interest. Apart from adults and...

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Bibliographic Details
Published in:Journal of forensic sciences 2015-07, Vol.60 (4), p.919-927
Main Authors: Zanetti, Noelia I., Visciarelli, Elena C., Centeno, Nestor D.
Format: Article
Language:English
Subjects:
Animals
Argentina
Biodiversity
cadaveric succession
carrion fauna
Coleoptera
Decomposition
Entomology
Feeding Behavior
Forensic Anthropology
forensic entomology
Forensic Pathology
forensic science
Forensic sciences
Insects
Larva
Postmortem Changes
Seasons
Swine
Temperature
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Summary:Beetles associated with carrion play an important role in recycling organic matter in an ecosystem. Four experiments on decomposition, one per season, were conducted in a semirural area in Bahía Blanca, Argentina. Melyridae are reported for the first time of forensic interest. Apart from adults and larvae of Scarabaeidae, thirteen species and two genera of other coleopteran families are new forensic records in Argentina. Diversity, abundance, and species composition of beetles showed differences between stages and seasons. Our results differed from other studies conducted in temperate regions. Four guilds and succession patterns were established in relation to decomposition stages and seasons. Dermestidae (necrophages) predominated in winter during the decomposition process; Staphylinidae (necrophiles) in Fresh and Bloat stages during spring, summer, and autumn; and Histeridae (necrophiles) and Cleridae (omnivores) in the following stages during those seasons. Finally, coleopteran activity, diversity and abundance, and decomposition rate change with biogeoclimatic characteristics, which is of significance in forensics.
ISSN:0022-1198
1556-4029
DOI:10.1111/1556-4029.12781