20.500.12556/DKUM-72004 Primerjava obustnih okončin izbranih površinskih in podzemeljskih podzemljarjev (leiodidae: cholevinae) Comparison of the mouthparts in selected epigean and hypogean cholevinae (coleoptera: leiodidae) Žuželke so najštevilčnejša skupina živali in poseljujejo vse kopenske in večino sladkovodnih habitatov. Hrošči obsegajo 40 % celotnega števila do sedaj opisanih živalskih vrst. Podzemeljski hrošči so še vedno slabo raziskani, ker smo mnogi habitati, ki jih poseljujejo, težko dostopni. Domnevamo, da so se skladno s prevladujočim načinom prehranjevanja pri obravnavanih vrstah razvile določene konvergentne morfološke prilagoditve obustnega aparata. V raziskavi nas zanima, ali lahko med jamskimi mrharčki in sorodnimi hrošči iz drugih poddružin družine Leiodidae prepoznamo posamezne tipe morfoloških struktur obustnega aparata kot posledico načina prehranjevanja. Zaradi kompleksnosti obustnega aparata smo v analizo vključili le mandibulo. Na mandibuli so zobci, ščetine in druge strukture, ki so pomembne za prepoznavanje načina prehranjevanja. Izpreparirali in primerjali smo mandibule 18 vrst iz družine Leiodidae. Mandibulam smo določili oslonilne točke in med seboj primerjali obliko ter velikost. Rezultat analize mandibul 18 vrst je njihova razvrstitev v tri velikostne razrede: majhne, srednje velike in velike mandibule. Oblika mandibul je bolj ali manj zvezna. Zanimala nas je povezava med obliko in velikostjo mandibule ter prehranjevalnim tipom posamezne vrste. Ugotovili smo povezavo med življenjem vrst v habitatih z različno količino organskih snovi in oblikovanostjo mandibule. S tem smo vzpostavili povezavo med morfologijo obustnega aparata in vrsto hrane oziroma načinom prehranjevanja za proučevane površinske in podzemeljske leiodidne hrošče. Insects are one of the largest groups of animals. They inhabit all terrestrial and freshwater habitats. Beetles comprehend 40 % of all the animal species discovered until now. They inhabit different terrestrial habitats. Underground beetles are still poorly investigated, since most of their habitats are difficult to access. We assume that subterranean beetles evolved certain convergent morphological adaptations of the mouthparts in response to the prevalent way of feeding. In our research, we asked, whether we can eventually distinguish distinctive morphological types mouthparts in response to the habits selected species of the beetle Leiodidae family. Owing to the complexity of the mouthparts, we analysed the mandible only. The mandible consist of teeth, hairs and other structures important for recognising the feeding habits. We compared mandibles of 18 species of the Leiodidae family. We defined key points on the mandibles to compare their shapes and sizes. According to the results, we classified the 18 species into three size groups: those with small, medium-sized and large mandibles. One the other hand, we found continuous changes in the shape. We were particularly interested in the relation between the shape and the size of the mandible, on the one hand, and feeding habits of specific species, on the other hand. The shape is more or less continiuous. We discovered the relation between the life in habitats with different quantities of organic substances and the mandible's shape. By doing that, we establish the relation between the morphological characteristics of the mouthparts, on the one hand, either the type of food or feeding habits, on the other hand, of the analysed subterranean leiodid beetles. Ekološke skupine Leiodidae mandibula prehranjevalni tipi Ecological groups feeding types Leiodidae mandible true true false [M. Dobrajc] Slovenski jezik Angleški jezik Magistrsko delo/naloga 2018-09-06 13:51:38 2018-10-09 15:07:36 2022-08-01 21:51:00 2019-07-11 19:02:40 2018 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 595.76(043.2) 24064520 URN:SI:UM:DK:MOEQRFHA MAG_Dobrajc_Maja_2018.pdf MAG_Dobrajc_Maja_2018.pdf 1 35F4412FC952BFB6E80EE334F95E3CD2 9a85cf91ca01f53221f651bcdc873061ed3bc19535b95a1f6abf7bac62e9e886 445a87a3-7c10-11eb-bb7a-00155d0001ca 20.500.12556/dkum/7738aaff-b103-47c6-a6b7-dda71215e56c https://dk.um.si/Dokument.php?lang=slv&id=128828 Fakulteta za naravoslovje in matematiko 0 0 0