Factors Affecting the Composition and Succession of Beetles in Exposed Pig Carcasses in Southern Brazil

被引:5
作者
Ries, Ana Carolina R. [1 ]
Costa-Silva, Vinicius [2 ,3 ]
dos Santos, Charles F. [1 ]
Blochtein, Betina [1 ]
Thyssen, Patricia J. [2 ]
机构
[1] Pontifical Catholic Univ Rio Grande do Sul PUCRS, Sch Hlth & Life Sci, Av Ipiranga 6681, BR-90619900 Porto Alegre, RS, Brazil
[2] Univ Campinas UNICAMP, Dept Anim Biol, Lab Integrat Entomol, Sao Paulo, Brazil
[3] Fed Univ Mato Grosso UFMT, Inst Biol, Lab Scarabaeoidol, Cuiaba, Mato Grosso, Brazil
关键词
necrophagous; Coleoptera; regional database; postmortem interval; forensic entomology; FORENSIC IMPORTANCE; SCAVENGER BEETLES; COLEOPTERA; DECOMPOSITION; CARRION; CURITIBA; DIPTERA; FAUNA; DERMESTIDAE; TEMPERATURE;
D O I
10.1093/jme/tjaa175
中图分类号
Q96 [昆虫学];
学科分类号
摘要
Coleoptera is one of the largest taxon among animals and exhibits diverse eating habits. When associated with decaying corpses, beetles can be of great value in estimating the postmortem interval. In order to consolidate a useful database for the forensic field, it is necessary to study the entomological fauna associated with the carcasses in different geographical regions since the diversity of insects varies according to the biogeoclimate zone. Thus, this study aimed to assess the influence of environmental and ecological factors on the composition and succession of beetles associated with pig carcasses exposed in southern Brazil. Collections were carried out during the hot/dry and cold/wet seasons. A total of 415 specimens belonging to 18 Coleoptera families were sampled. The highest total abundance (n = 329) and diversity (n = 44 taxa) were recorded in the cold/wet season, corresponding to approximately 80% of the total sampled from the two seasons. Dermestidae (26.7%) was the family most abundantly sampled. Regarding eating habits, in an increasing order of importance were necrophagous (43.3%), predator (31.6%), and omnivorous (0.05%). In the hot/dry season, there was no faunal succession. In the cold/wet season, the succession was more associated with differences in abundance than to the presence or absence of a specific taxon by decomposition stage. Considering all the factors analyzed in the current study, three species of beetles, Dermestes maculatus DeGeer (Dermestidae), Euspilotus azureus (Sahlberg, 1823) (Histeridae), and Oxelytrum discicolle Brulle, 1840 (Silphidae), could be identified as being of the greatest forensic relevance in this biogeoclimatic zone.
引用
收藏
页码:104 / 113
页数:10
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