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Title:Primerjava kopalnih struktur dveh vrst koprofagnih hroščev Onthophagus ovatus (Linnaeus, 1767) in Anoplotrupes stercorosus (Hartmann v Scriba, 1791) : magistrsko delo
Authors:ID Pasarič, Tadej (Author)
ID Podlesnik, Jan (Mentor) More about this mentor... New window
ID Klenovšek, Tina (Comentor)
Files:.pdf EMAG_Pasaric_Tadej_2024.pdf (4,28 MB)
MD5: 9CCA28EED8F2252C5D39550633F27648
 
Language:Slovenian
Work type:Master's thesis/paper
Typology:2.09 - Master's Thesis
Organization:FNM - Faculty of Natural Sciences and Mathematics
Abstract:Onthophagus ovatus in Anoplotrupes stercorosus sta vrsti koprofagnih hroščev. To pomeni, da se prehranjujeta z iztrebki živali. Koprofagni hrošči imajo več strategij prehranjevanja in razmnoževanja. Poznamo endokopride, parakopride in telekopride. Obe raziskovani vrsti spadata med parakopride, kar pomeni, da hrošči neposredno pod iztrebkom izkopljejo različno globoke tunele, v katere shranijo kroglico iztrebka za odlaganje jajčec. Zaradi njihove skupne lastnosti – kopanja tunelov smo se v magistrski nalogi odločili preveriti in primerjati kopalne strukture izbranih vrst hroščev. Natančneje smo pri teh dveh vrstah govnačev raziskovali sprednje tibije in glave. Analizo velikosti in oblike struktur smo opravili z geometrijsko morfometrijo. Raziskave so potekale na zbirki hroščev. V raziskavo je bilo vključeno 270 osebkov (139 osebkov vrste O. ovatus in 131 osebkov vrste A. stercorosus). Osebki vrste O. ovatus so bili razvrščeni glede na lokacijo, mesec in spol. Osebki vrste A. stercorosus so bili razvrščeni glede na lokacijo in mesec. Tibije in glave smo glede na omenjene dejavnike primerjali za vsako vrsto posebej. Ugotovili smo, da se tibije in glave znotraj posamezne vrste ne razlikujejo po velikosti, lahko pa se razlikujejo po obliki glede na mesec nabiranja, spol ali lokacijo. Na obliko verjetno vpliva različna trdnost tal, različna globina kopanja tunelov in pojavljanje več generacij v enem letu. Poleg opravljene znotrajvrstne primerjave smo vrsti O. ovatus in A. stercorosus primerjali tudi med sabo. Primerjali smo velikost in obliko kopalnih struktur. Ugotovili smo, da so kopalne strukture osebkov vrste A. stercorosus večje od kopalnih struktur osebkov vrste O. ovatus. Vrsti se močno razlikujeta tudi v obliki glave in tibije.
Keywords:govnači, Onthophagus ovatus, Anoplotrupes stercorosus, kopalne strukture, koprofagni hrošči, geometrijska morfometrija
Place of publishing:Maribor
Place of performance:Maribor
Publisher:[T. Pasarič]
Year of publishing:2024
Number of pages:XI, 87 str.
PID:20.500.12556/DKUM-89500-ddc6d302-2e56-e77e-aeb5-b442058fd6c6 New window
UDC:595.76(043.2)
COBISS.SI-ID:206409731 New window
Publication date in DKUM:05.09.2024
Views:202
Downloads:55
Metadata:XML DC-XML DC-RDF
Categories:FNM
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Licences

License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Licensing start date:15.07.2024

Secondary language

Language:English
Title:Comparison of digging structures of two coprophagous beetles Onthophagus ovatus (Linnaeus, 1767) and Anoplotrupes stercorosus (Hartmann v Scriba, 1791)
Abstract:Onthophagus ovatus and Anoplotrupes stercorosus are species of coprophagous beetles. This means they feed on animal faeces. Coprophagous beetles have multiple feeding and reproductive strategies. We distinguish endocoprids, paracoprids, and telecoprids. Both investigated species belong to the paracoprids, meaning they directly dig tunnels of varying depths beneath the dung. They use these tunnels for depositing dung balls as source of food for their offspring (brooding ball). Due to their tunnelling behaviour, we decided to examine and compare their digging structures in our master's thesis. Specifically, we researched the front tibiae and heads of these two dung beetles. We conducted the analysis using geometric morphometrics. The research was conducted on a beetle collection. The study included 270 specimens (139 specimens of O. ovatus and 131 specimens of A. stercorosus). Individuals of O. ovatus were classified according to location, month, and gender. Individuals of A. stercorosus were classified by location and month. We compared the tibiae and heads based on these factors for each species separately. We found that within each species, the tibiae and heads do not differ in size, but they may differ in shape depending on the month of collection, gender, or location. Shape is likely influenced by different soil hardness, tunnelling depth, and the occurrence of various generations throughout the year. In addition to intra-specific comparisons, we also compared both species, O. ovatus and A. stercorosus. We compared the size and shape of digging structures and found that the digging structures of A. stercorosus individuals are larger than those of O. ovatus individuals. There were also significant differences in head and tibia shape between the species.
Keywords:dung beetles, Onthophagus ovatus, Anoplotrupes stercorosus, digging structures, coprophagous beetles, geometric morphometrics.


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