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1.
Braz J Biol ; 73(3): 543-8, 2013 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-24212695

RESUMEN

Many arthropod species are associated with carrion and some of them can be used as forensic indicators in murder investigations to estimate the time of death. Different physical conditions of cadavers may influence the fauna and the importance of freezing and thawing is unknown. The present paper sought to survey the Coleoptera species encountered in frozen and fresh rabbit carcasses, at a forest in Curitiba, Brazil. Four rabbit carcasses, two of them fresh and the other frozen were used. The coleopterofauna was sampled daily, and analyzed using non-parametric tests. A total of 666 beetles were sampled, belonging to 28 species in 10 families. Most of the beetles captured were larvae of Oxelytrum spp. (433) which are known to be necrophagous. The two frozen carcasses accounted for most of the beetles (338 and 180) in comparison with the two fresh carcasses (103 and 45). The tests were based on the most abundant species. Oxelytrum spp. median differed significantly between carcasses (H = 12.47844; p = 0.0059). The two fresh carcasses differed significantly (U = 190.0; p = 0.00019), but there was no significant difference between the frozen carcasses (U = 336.0; p = 0.29755). The data indicate that the freezing process prevents certain species to colonize carcasses, in this case with the dominance of species of Oxelytrum. These data also indicate that careful attention is necessary before using frozen carcasses in forensic entomology studies.


Asunto(s)
Escarabajos/clasificación , Congelación , Animales , Brasil , Cadáver , Escarabajos/fisiología , Conducta Alimentaria , Antropología Forense , Larva , Cambios Post Mortem , Conejos
2.
Braz. J. Biol. ; 73(3): 543-548, Aug. 2013. tab
Artículo en Inglés | VETINDEX | ID: vti-31053

RESUMEN

Many arthropod species are associated with carrion and some of them can be used as forensic indicators in murder investigations to estimate the time of death. Different physical conditions of cadavers may influence the fauna and the importance of freezing and thawing is unknown. The present paper sought to survey the Coleoptera species encountered in frozen and fresh rabbit carcasses, at a forest in Curitiba, Brazil. Four rabbit carcasses, two of them fresh and the other frozen were used. The coleopterofauna was sampled daily, and analyzed using non-parametric tests. A total of 666 beetles were sampled, belonging to 28 species in 10 families. Most of the beetles captured were larvae of Oxelytrum spp. (433) which are known to be necrophagous. The two frozen carcasses accounted for most of the beetles (338 and 180) in comparison with the two fresh carcasses (103 and 45). The tests were based on the most abundant species. Oxelytrum spp. median differed significantly between carcasses (H = 12.47844; p = 0.0059). The two fresh carcasses differed significantly (U = 190.0; p = 0.00019), but there was no significant difference between the frozen carcasses (U = 336.0; p = 0.29755). The data indicate that the freezing process prevents certain species to colonize carcasses, in this case with the dominance of species of Oxelytrum. These data also indicate that careful attention is necessary before using frozen carcasses in forensic entomology studies.(AU)


Muitas espécies de artrópodes são associadas a carcaças e algumas delas podem ser utilizadas em casos de morte violenta como indicadoras forenses do intervalo decorrido desde a morte do indivíduo. Diferentes condições físicas dos cadáveres podem influenciar a fauna, sendo que o efeito do congelamento e descongelamento é desconhecido. Os objetivos do presente trabalho foram levantar as espécies de Coleoptera em carcaças de coelho frescas e congeladas em um remanescente florestal localizado em Curitiba, Brasil. Foram utilizadas quatro carcaças de coelhos, dois frescos e dois previamente congelados. A coleopterofauna foi amostrada diariamente e analisada com testes não paramétricos. Foram coletados 666 espécimes, pertencentes a 28 espécies, de 10 famílias. A maioria dos besouros coletados foi representada por larvas de Oxelytrum spp. (433), as quais são necrófagas. Observou-se um maior número de indivíduos sobre as carcaças congeladas (338 e 180) em comparação com as duas frescas (103 e 45). Os testes foram baseados nas espécies mais abundantes. A mediana das espécies de Oxelytrum diferiu significativamente entre as carcaças (H = 12,47844; p = 0,0059). As duas carcaças frescas diferiram significativamente (U = 190,0; p = 0,00019), porém não houve diferença significativa entre as carcaças congeladas (U = 336,0; p = 0,29755). Os dados indicaram que o processo de congelamento evitou que algumas espécies colonizassem as carcaças, neste caso com dominância de espécies de Oxelytrum. Estes dados também indicam a necessidade de cuidado ao utilizar carcaças congeladas em estudos de entomologia forense.(AU)


Asunto(s)
Animales , Escarabajos/clasificación , Conejos , Congelación , Entomología , Brasil
3.
Arq. Inst. Biol ; 76(1)2009.
Artículo en Portugués | LILACS-Express | VETINDEX | ID: biblio-1462009

RESUMEN

ABSTRACT The present paper sought a better understanding of the fauna of synantropic insects associated with different urban environments of Curitiba and São José dos Pinhais, Paraná, Brazil. The samplings were made during one year, using light traps with ultraviolet light and sticky traps, in companies. A total of 1,644 insects were collected, the food company being the place with the higher percentage of insects. Diptera was the most abundant order (42.9%), followed by Hymenoptera (21.5%) and Blattaria (13.7%). The density of insects reveals that it is important to intensify the sanitary vigilance in the studied locations as these insects act as mechanical transmitters of pathogenic organisms.


RESUMO O estudo buscou o conhecimento da fauna de insetos sinantrópicos associada a diferentes ambientes comerciais em Curitiba e São José dos Pinhais, Paraná. As coletas foram realizadas durante um ano, em empresas prestadoras de serviços, por meio de armadilhas adesivas e com luz ultravioleta. Foram coletados 1.644 insetos, sendo a indústria de alimentos o local com o maior percentual. Diptera foi a ordem mais abundante (42,9%), seguida de Hymenoptera (21,5%) e Blattaria (13,7%). A densidade de insetos demonstra que a vigilância sanitária dos locais estudados deve ser intensificada, pois esses insetos são importantes veiculadores de patógenos.

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