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6. Diel Activity and Effect of Carcass Decomposition on the Attractiveness to the Forensically Important Species Oxelytrum Discicolle (Coleoptera: Silphidae)†.

Author

Lira, Luiz Antonio, Macedo, Marcos Patrício, Pujol‐Luz, José Roberto, and Vasconcelos, Simão Dias

Subjects
*ANIMAL carcasses, *DEAD animals, *SILPHIDAE, *BEETLES, *FORENSIC entomology, *FORENSIC biology
Abstract

Oxelytrum discicolle is a carrion beetle commonly found in the Neotropical region, mainly associated with cadavers and carcasses. Information on behavior related to the likelihood of cadaver colonization is scarce. We performed two field experiments in peri‐urban forest in Brazil in order to strengthen our knowledge on O. discicolle behavior. In the first experiment, we assessed the preference for piglet carcasses at different stages of decomposition offered simultaneously in two seasons, dry and rainy, while in the second experiment we investigated the diel activity of adults. A total of 493 adults were collected in the experiments. A significantly higher abundance was detected in the rainy season. There was a marked preference for carcasses at advanced stages. Adults exhibited a typical nocturnal behavior, the number trapped at night was 17 times greater than those collected during the day. Oxelytrum discicolle is nocturnal species that prefers carcasses in advanced stage of decomposition. [ABSTRACT FROM AUTHOR]

Published
2019
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7. Diel Activity and Effect of Carcass Decomposition on the Attractiveness to the Forensically Important Species Oxelytrum Discicolle (Coleoptera: Silphidae)†.

Author

Lira, Luiz Antonio, Macedo, Marcos Patrício, Pujol‐Luz, José Roberto, and Vasconcelos, Simão Dias

Subjects
ANIMAL carcasses, DEAD animals, SILPHIDAE, BEETLES, FORENSIC entomology, FORENSIC biology
Abstract

Oxelytrum discicolle is a carrion beetle commonly found in the Neotropical region, mainly associated with cadavers and carcasses. Information on behavior related to the likelihood of cadaver colonization is scarce. We performed two field experiments in peri‐urban forest in Brazil in order to strengthen our knowledge on O. discicolle behavior. In the first experiment, we assessed the preference for piglet carcasses at different stages of decomposition offered simultaneously in two seasons, dry and rainy, while in the second experiment we investigated the diel activity of adults. A total of 493 adults were collected in the experiments. A significantly higher abundance was detected in the rainy season. There was a marked preference for carcasses at advanced stages. Adults exhibited a typical nocturnal behavior, the number trapped at night was 17 times greater than those collected during the day. Oxelytrum discicolle is nocturnal species that prefers carcasses in advanced stage of decomposition. [ABSTRACT FROM AUTHOR]

Published
2019
Full Text
View/download PDF

9. Diel Activity and Effect of Carcass Decomposition on the Attractiveness to the Forensically Important Species Oxelytrum Discicolle (Coleoptera: Silphidae) † .

Author

Lira LA, Macedo MP, Pujol-Luz JR, and Vasconcelos SD

Subjects
Animals, Brazil, Coleoptera anatomy & histology, Entomology, Forensic Pathology, Humans, Humidity, Models, Animal, Rain, Seasons, Temperature, Time Factors, Coleoptera physiology, Feeding Behavior physiology, Postmortem Changes, Swine
Abstract

Oxelytrum discicolle is a carrion beetle commonly found in the Neotropical region, mainly associated with cadavers and carcasses. Information on behavior related to the likelihood of cadaver colonization is scarce. We performed two field experiments in peri-urban forest in Brazil in order to strengthen our knowledge on O. discicolle behavior. In the first experiment, we assessed the preference for piglet carcasses at different stages of decomposition offered simultaneously in two seasons, dry and rainy, while in the second experiment we investigated the diel activity of adults. A total of 493 adults were collected in the experiments. A significantly higher abundance was detected in the rainy season. There was a marked preference for carcasses at advanced stages. Adults exhibited a typical nocturnal behavior, the number trapped at night was 17 times greater than those collected during the day. Oxelytrum discicolle is nocturnal species that prefers carcasses in advanced stage of decomposition., (© 2018 American Academy of Forensic Sciences.)

Published
2019
Full Text
View/download PDF

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