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Succession and sezonality of necrobiont insects communities on carcasses of small mammals
Mikátová, Šárka ; Šípek, Petr (advisor) ; Šuláková, Hana (referee)
The presented master thesis describes the changes of insects communities on carcases of small mammals in course of the decay. We focused both on aspects of (temporal) succession as well on season dependent differences in carrion insect community. The study was carried out during the seasons 2014 and 2015; in each of the years we used a different carrion type (2014: mice (Mus musculus) +/- 20g, 2015: brown rat (Rattus norvegicus) 400-500g). Because we wanted to record the actual successional stage, we used a "walk-through" type of traps instead of commonly used pitfall traps. The general succession pattern was similar in both seasons; however the succession course of brown rat carcasses was slightly delayed. The succession was strongly influenced by the first species colonizing the carrion and morover, most of the carcasses were dominated or monopolized by a single species (or species group). Only the carcasses of mice were buried by the burying beetles (Silphinae: Nicrophorus). Bow flies (Calliphoridae) have been identified as the most common members of carrion insect communities. The other important members were the flesh flies (Sarcophagidae), and beetle families Silphidae and Staphylinidae. The highest abundance of insect was observed in summer, lowest abundance either in spring or fall depending on the...
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Succession and sezonality of necrobiont insects communities on carcasses of small mammals
Mikátová, Šárka ; Šípek, Petr (advisor) ; Šuláková, Hana (referee)
The presented master thesis describes the changes of insects communities on carcases of small mammals in course of the decay. We focused both on aspects of (temporal) succession as well on season dependent differences in carrion insect community. The study was carried out during the seasons 2014 and 2015; in each of the years we used a different carrion type (2014: mice (Mus musculus) +/- 20g, 2015: brown rat (Rattus norvegicus) 400-500g). Because we wanted to record the actual successional stage, we used a "walk-through" type of traps instead of commonly used pitfall traps. The general succession pattern was similar in both seasons; however the succession course of brown rat carcasses was slightly delayed. The succession was strongly influenced by the first species colonizing the carrion and morover, most of the carcasses were dominated or monopolized by a single species (or species group). Only the carcasses of mice were buried by the burying beetles (Silphinae: Nicrophorus). Bow flies (Calliphoridae) have been identified as the most common members of carrion insect communities. The other important members were the flesh flies (Sarcophagidae), and beetle families Silphidae and Staphylinidae. The highest abundance of insect was observed in summer, lowest abundance either in spring or fall depending on the...
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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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