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Beetles on carrion: life strategies and ecological classification
Kadlec, Jakub ; Šípek, Petr (advisor) ; Růžička, Jan (referee)
This work summarizes available information about beetle communities on carrions, their life strategy and ecology classification. Necrobiotic beetles are very important part of the decomposition process and the return of organic mass to the life cycle. We can classify decomposition by several criterions, most commonly by the overall appearance of the carrion and by the species of present insect. Conclusions are different depending on authors. Process of decomposition of carrion is affected by the readiness of access for different species of insect. Insect succession depends on many factors, some factors increase the process and others decrease it. The interrelationships between different colonizators of carrion are very important, this relationship is described by three models of classic success ecology. Necrobiotic insect has specific adaptations for the life on carrion. For this thesis, we have chosen 13 families, which are often discussed in publications. The rest of 190 necrobiotic genuses from 34 families is listed in this thesis with their characteristic ecology.
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Succession of insect communities inhabiting carcasses of small vertebrates, with emphasis on the beetles
Kadlec, Jakub ; Šípek, Petr (advisor) ; Růžička, Jan (referee)
This master thesis deals with succession and succession mechanisms of beetles (Coleoptera) on carrions of small vertebrates. As a model sample of small carrion a small mouse of weight 20 grams was chosen. In 2014 two experiments occurred. The first one studied the succession of a beetle community in dependence on seasonality and time of death of the sample. The second experiment was aimed to survey the blocking effect of an early insect succession on the final beetle community composition on carrions. It turned out, that during decomposition of the carrion the overall amount of beetles raised equally to the guild of necrophagous beetles. Change of the species spectrum during succession was not statistically confirmed. On the other hand, the effect of seasonality was clear as during the season the abundance and the amount of species increased. The proportion of trophic guilds changed significantly, necrophagous beetles were the most dominant part of the community towards the end of the season. Equally, the taxonomic composition of the community also changed during the season. The seasonal dynamics of carrion beetles was clear; Nicrophorus vespillo (Linnaeus, 1758) and N. investigator Zetterstedt, 1824 showed their peaks in spring and summer while N. humator (Gleditsch, 1767) and N. vespilloides...
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Effect of carrion size on the succesion of the nephilous insect society
Mikátová, Šárka ; Šípek, Petr (advisor) ; Jakubec, Pavel (referee)
The aim of this work was to assess the effect of carrion size on insect communities succession based on previously published studies. Assessement of various factors on carrion is important in forensic analysis and to determine the PMI (post morte interval). The most abundant and investigate groups of carrion insects are Diptera and Coleoptera. Model organism in most cases is a pig (Sus scrofa L). Decomposition of small carrions varies from medium and large size carrion, which causes different succession of insects. Relevant judging of differences between studies is not possible because of many factors which affect carrion decomposition. Key words: necrobiont insects, carrion, body size, Diptera, Coleoptera
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Beetles on carrion: life strategies and ecological classification
Kadlec, Jakub ; Šípek, Petr (advisor) ; Růžička, Jan (referee)
This work summarizes available information about beetle communities on carrions, their life strategy and ecology classification. Necrobiotic beetles are very important part of the decomposition process and the return of organic mass to the life cycle. We can classify decomposition by several criterions, most commonly by the overall appearance of the carrion and by the species of present insect. Conclusions are different depending on authors. Process of decomposition of carrion is affected by the readiness of access for different species of insect. Insect succession depends on many factors, some factors increase the process and others decrease it. The interrelationships between different colonizators of carrion are very important, this relationship is described by three models of classic success ecology. Necrobiotic insect has specific adaptations for the life on carrion. For this thesis, we have chosen 13 families, which are often discussed in publications. The rest of 190 necrobiotic genuses from 34 families is listed in this thesis with their characteristic ecology.
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