magistrska naloga
Tjaša Mlakar (Author), Dušan Devetak (Mentor), Jan Podlesnik (Co-mentor)

Abstract

Hrošči govnači naseljujejo vse zoogeografske regije sveta. Največje število vrst najdemo v tropskih predelih in savanah. V Evropi se vrstna pestrost in pomembnost posameznih družin po regijah razlikuje. So koprofagne žuželke, večinoma oportunisti, ki se prehranjujejo z različnimi iztrebki brez večje diskriminacije, medtem ko nekatere vrste kažejo nagnjenost k prehranjevanju z iztrebki določenih skupin vretenčarjev. Govnači iztrebke pojedo, prenesejo v nižje dele prsti ali pa na druga mesta. Hranijo se s tekočo ali deloma tekočo hrano katere vonj zaznavajo s pomočjo posameznih olfaktornih celic, ki so nameščene na antenah. Pri odlaganju jajc govnači uporabljajo tri osnovne strategije, ki vplivajo na vrsto ekoloških procesov. Raziskavo smo delali na območju Kozjaka, kjer smo s pomočjo talnih pasti primerjali privlačnost treh različnih vrst iztrebkov (kravjih, ovčjih in pasjih), vpliv bližine pašnika na številčnost in vrstno pestrost govnačev ter primerjali vrstno sestavo govnačev v iztrebkih rastlinojedov in mesojedov. Na obeh lokacijah smo ulovili 270 osebkov, ki pripadajo 18 vrstam govnačev. Ugotovili smo, da ima bližina pašnika določen vpliv na številčnost in vrstno pestrost govnačev, ki pa sta bili največji v ovčjih iztrebkih, sledijo jim pasji in kravji.

Keywords

magistrska dela;govnači;Scarabaeoidea;koprofagija;vrstna pestrost;abundanca;prehranjevalne preference;

Data

Language: Slovenian
Year of publishing:
Typology: 2.09 - Master's Thesis
Organization: UM FNM - Faculty of Natural Sciences and Mathematics
Publisher: [T. Mlakar]
UDC: 632.76:595.768.1:614.95(043.2)
COBISS: 90650883 Link will open in a new window
Views: 399
Downloads: 14
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Other data

Secondary language: English
Secondary title: A dung beetle's (coleoptera: polyphaga: scarabaeoidea) preference to various types of dung
Secondary abstract: Dung beetles inhabit all zoogeographical regions of the world. The largest number of species is found in the tropics and savannas. In Europe, the species diversity and importance of individual families varies from region to region. Dung beetles are coprophagous insects, mostly opportunists, that feed on a variety of feces without much discrimination, while some species show a tendency to feed on the feces of certain groups of vertebrates. Dung beetles eat the excrement, transfer it to the lower parts of the soil or to other places. They feed on liquid or partially liquid food, the smell of which they detect with the help of individual olfactory cells placed on the antennae. When laying eggs, dung beetles use three basic strategies that affect a number of ecological processes. The research was conducted in the Kozjak area. We used baited pit-fall traps to analyze the attractiveness of excrements of three different species (cow, sheep and dog) and the impact of pasture proximity on the abundance and species diversity. We also analyzed the species composition concerning the excrement of herbivores and carnivores. We captured 270 individuals that belong to 18 dung beetle species. The results show that the proximity of the pasture has an impact on the abundance and species diversity. The largest abundance and species richness was observed in traps baited with sheep’s excrements, followed by dog’s and lastly cow’s excrements.
Secondary keywords: master theses;dung beetles;coprophagy;Scarabaeoidea;species richness;abundance;resource preferences;Zoologija;Hrošči;Hrana (živali);Univerzitetna in visokošolska dela;
Type (COBISS): Master's thesis/paper
Thesis comment: Univ. v Mariboru, Fak. za naravoslovje in matematiko, Oddelek za biologijo
Pages: VIII, 39 f.
ID: 13549766