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Carrion Beetles Visiting Pig Carcasses During Early Spring in Urban, Forest and Agricultural Biotopes of Western Europe Author(S): Jessica Dekeirsschieter, François J

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Carrion Beetles Visiting Pig Carcasses During Early Spring in Urban, Forest and Agricultural Biotopes of Western Europe Author(S): Jessica Dekeirsschieter, François J Carrion Beetles Visiting Pig Carcasses during Early Spring in Urban, Forest and Agricultural Biotopes of Western Europe Author(s): Jessica Dekeirsschieter, François J. Verheggen, Eric Haubruge and Yves Brostaux Source: Journal of Insect Science, 11(73):1-13. 2011. Published By: Entomological Society of America DOI: http://dx.doi.org/10.1673/031.011.7301 URL: http://www.bioone.org/doi/full/10.1673/031.011.7301 BioOne (www.bioone.org) is a nonprofit, online aggregation of core research in the biological, ecological, and environmental sciences. BioOne provides a sustainable online platform for over 170 journals and books published by nonprofit societies, associations, museums, institutions, and presses. Your use of this PDF, the BioOne Web site, and all posted and associated content indicates your acceptance of BioOne’s Terms of Use, available at www.bioone.org/page/terms_of_use. Usage of BioOne content is strictly limited to personal, educational, and non-commercial use. Commercial inquiries or rights and permissions requests should be directed to the individual publisher as copyright holder. BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders in the common goal of maximizing access to critical research. Journal of Insect Science: Vol. 11 | Article 73 Dekeirsschieter et al. Carrion beetles visiting pig carcasses during early spring in urban, forest and agricultural biotopes of Western Europe Jessica Dekeirsschieter1a, François J. Verheggen1, Eric Haubruge1 and Yves Brostaux2 1Department of Functional and Evolutionary Entomology, Gembloux Agro-Bio Tech, University of Liege, 2 Passage des Déportés, 5030 Gembloux, Belgium 2 Department of Applied Statistics, Computer Science and Mathematics, Gembloux Agro-Bio Tech, University of Liege, 2 Passage des Déportés, 5030 Gembloux, Belgium Abstract Carrion beetles are important in terrestrial ecosystems, consuming dead mammals and promoting the recycling of organic matter into ecosystems. Most forensic studies are focused on succession of Diptera while neglecting Coleoptera. So far, little information is available on carrion beetles postmortem colonization and decomposition process in temperate biogeoclimatic countries. These beetles are however part of the entomofaunal colonization of a dead body. Forensic entomologists need databases concerning the distribution, ecology and phenology of necrophagous insects, including silphids. Forensic entomology uses pig carcasses to surrogate human decomposition and to investigate entomofaunal succession. However, few studies have been conducted in Europe on large carcasses. The work reported here monitored the presence of the carrion beetles (Coleoptera: Silphidae) on decaying pig carcasses in three selected biotopes (forest, crop field, urban site) at the beginning of spring. Seven species of Silphidae were recorded: Nicrophorus humator (Gleditsch), Nicrophorus vespillo (L.), Nicrophorus vespilloides (Herbst), Necrodes littoralis L., Oiceoptoma thoracica L., Thanatophilus sinuatus (Fabricius), Thanatophilus rugosus (L.). All of these species were caught in the forest biotope, and all but O. thoracica were caught in the agricultural biotope. No silphids were caught in the urban site. Keywords: Silphidae, carrion ecology, decomposition, forensic entomology, insect succession Correspondence: a [email protected] Editor: Tugrul Giray was Editor of this paper Received: 1 June 2010, Accepted: 11 October 2010 Copyright : This is an open access paper. We use the Creative Commons Attribution 3.0 license that permits unrestricted use, provided that the paper is properly attributed. ISSN: 1536-2442 | Vol. 11, Number 73 Cite this paper as: Dekeirsschieter J, Verheggen FJ, Haubruge E, Brostaux Y. 2011. Carrion beetles visiting pig carcasses during early spring in urban, forest and agricultural biotypes of Western Europe. Journal of Insect Science 11:73 available online: insectscience.org/11.73 Journal of Insect Science | www.insectscience.org 1 Journal of Insect Science: Vol. 11 | Article 73 Dekeirsschieter et al. Introduction Carrion beetles (Coleoptera: Silphidae) of beetles in forensic entomology can be perform vital ecosystem functions (Wolf and relevant (Kulshrestha and Satpathy 2001; Gibbs 2004) by promoting the breakdown and Midgley et al. 2010). Families of beetles of recycling of organic matter into terrestrial forensic importance are Silphidae (carrion ecosystems (Ratcliffe 1996; Hastir and Gaspar beetles), Dermestidae (larder, skin or hide 2001; Kalinova et al. 2009). Most silphids are beetles), Staphylinidae (rove beetles), carrion feeders (necrophagous species) or prey Histeridae (clown or hister beetles), Cleridae on other carrion inhabitants such as fly eggs (checker beetles) and Nitidulidae (sap beetles) or maggots and other carrion beetles (Haskell et al. 1997; Byrd and Castner 2001; (necrophilous species) (Ratcliffe 1996; Hastir Wyss and Cherix 2006). Among them, carrion and Gaspar 2001; Sikes 2005, 2008). The beetles can provide information on necrophagous insects, including flies and postmortem colonization on remains and time carrion beetles, have particular relationships since death (Haskell et al. 1997; Smith 1986; with decomposing remains of vertebrate Watson and Carlton 2005). So far, little carcasses that constitute a rich, but ephemeral information is available on carrion beetles resource (Anderson and VanLaerhoven 1996; postmortem colonization and the process of Grassberger and Frank 2004; Carter et al. decomposition in temperate biogeoclimatic 2007). These specialized insects are attracted countries. to the cadaver that they colonize in a relative predictable sequence called the entomofaunal The world fauna of Silphidae is composed of succession or insect succession (Megnin 1894; fewer than 200 species distributed in 15 Putman 1983; Schoenly and Reid 1987; genera (Portevin 1926; Peck 2001; Sikes Marchenko 1988, 2001; Benecke 2004). Study 2005). This family has a Holarctic distribution of these insects in a medico-legal context is (Peck 2001). In Western Europe, this family is part of forensic entomology (Hall 1990; divided in two subfamilies: Nicrophorinae Amendt et al. 2004). Many forensic (i.e. burying beetles) with eleven species and entomological studies have been conducted on Silphinae including seventeen species pig carcasses as surrogate human models for (Portevin 1926; Du Chatenet 1986; Hastir and physiological, ethical and economical reasons Gaspar 2001; Debreuil 2003a,b, 2004a,b,c). (Rodriguez and Bass 1983; Catts and Goff There are seven species of Nicrophorinae and 1992; Anderson and VanLaerhoven 1996; thirteen species of Silphinae reported in Grassberger and Frank 2004; Hart and Belgium (Hastir and Gaspar 2001; Ruicka Whitaker 2005), but few were conducted in and Schneider 2004). Many forensic Europe with pig carcasses (Grassberger and entomological papers highlight the necessity Frank 2004; Garcia-Rojo 2004; Wyss and to generate data on insect succession and Cherix 2006; Matuszewski et al. 2008). Many insect seasonal activity on carrion in specific published reports are focused on Diptera geographic regions and various biotopes pattern colonization and very few looked at within these regions (Catts and Goff 1992; Coleoptera succession (Kocarek 2003; Byrd and Castner 2001; Amendt et al. 2004; Matuszewski et al. 2008; Midgley and Villet Sharanowski et al. 2008). This paper identifies 2009, Midgley et al. 2010). However, the use the early activity of silphids that occur on Journal of Insect Science | www.insectscience.org 2 Journal of Insect Science: Vol. 11 | Article 73 Dekeirsschieter et al. large carcasses in a temperate biogeoclimatic x 90 cm x 90 cm) to avoid scavenging by region in three different biotopes (forest, vertebrate carnivores. agricultural and urban site). Insect collection and identification Materials and Methods In order to quantify insect colonization on pig carcasses, pitfall traps and yellow traps were Sites and study period used to collect sarcosaprophagous insects. For continuous surveillance, six pitfall traps (glass This study was conducted during spring 2007 jars of 15 cm in height and 8 cm in diameter) (29 March - 11 May) in three distinct and two yellow traps (plastic container of 9 biotopes: a forest biotope, an agricultural cm in height and 27 cm in diameter), both biotope and an urban site, located in Belgium. filled with soapy water, were placed around The forest habitat consisted of pedonculate each carcass. The disposition of the pitfall oaks, Quercus robur L. (Fagales: Fagaceae), traps flush to the surface, was the following: European beeches, Fagus sylvatica L. and two near the ventral face, two near the dorsal sycamore maples, Acer pseudoplatanus L. face, one near the head and one near the anus. (Sapindales: Sapindaceae). The agricultural One yellow trap was placed near the head and biotope was a transect (5 meters width) of the other was placed near the anus (Figure 1). meadow with an alignment of willows (Salix sp.) between a barley Hordeum vulgare L. (Poales: Poaceae) field and an enclosed grassland. The meadow was not grazed for the duration of the experiment. The urban biotope was an abandoned building of two floors with broken windows and inside vegetation Clematis vitalba L. (Ranunculales: Ranunculaceae). The building was located on Figure 1. Disposition of the traps around the pig carcass (dark grey, a secure site belonging
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