20.500.12556/DKUM-74994 Prostorska in časovna variabilnost lobanje navadnega polha (Glis glis) Spatial and temporal variability of the fat dormouse (Glis glis) skull V magistrski nalogi sem analizirala variabilnost dorzalne strani lobanje navadnega polha (Glis glis). Preverjala sem obstoj razlik med spoloma, med različnimi starostnimi skupinami in med skupinami živali z različnih območij ter med polhi, ulovljenimi v različnih letih na istem območju. V analizo sem vključila 445 lobanj polhov, ulovljenih na šestih območjih Slovenije. Na dorzalni strani lobanje sem določila 14 oslonilnih točk in z metodami geometrijske morfometrije ovrednotili variabilnost v velikosti lobanje in v obliki lobanje. Kategorije, ki sem jih upoštevala v analizah so bile: spol (samci, samice), starost (šest starostnih skupin, glede na erupcijo zob in datum ulova), lokaliteta (Korinj, Krim in Prestranek) in leto ulova (1997, 1999 in 2001). Ugotovila sem, da se samci in samice navadnega polha, tako v velikosti, kot tudi v obliki lobanje, med seboj ne razlikujejo. Razlike so bile izrazite med starostnimi skupinami, saj tekom ontogenetskega razvoja lobanja raste in se razvija. V analizi variabilnosti dorzalne strani polšje lobanje sem ugotovila, da je velikost lobanje časovno, ne pa tudi prostorsko variabilna. Menim, da je za časovno variabilnost dorzalne strani lobanje, tako v velikosti kot v obliki, posledica dostopnosti hrane. Primarna hrana polha je bukov žir, njegov obrod se od leta do leta močno razlikuje. Za pojasnitev povezanosti obroda žira in morfološke variabilnosti bodo potrebne nadaljnje raziskave. Prostorska variabilnost je verjetno posledica prilagoditev na lokalne ekološke razmere, torej odziv fenotipa na klimo in druge dejavnike. The purpose of the master thesis was to determine the variability in skull of the fat dormouse. The research was focused on the differences between sexes, age groups as well as on geographic and temporal variability. The sample contained 445 skulls of dormice, caught in a few areas across Slovenia. The analysis was carried out on photos of the dorsal side of the skull, with 14 ground control points determined. The methods of geometric morphometry were then used. The sample for each analysis was separated according to gender, age group, area and the year the animal was caught. Based on the results, there are no gender-based differences in the skull of dormice. The differences do appear when comparing different age groups, as the skull is growing and changing during the period of ontogenetic development. The centroid size of the skull is influenced by temporal, but not by spatial variability. However, the shape is affected by both. It is possible that the temporal variability of the dorsal side of the skull (size and shape) is the consequence of the availability of the primary food source (beech nuts), which varies heavily from year to year. The spatial variability of the skull shape is most likely influenced by local environmental factors, such as phenotypic adaptation to local climate. geometrijska morfometrija prostorska variabilnost časovna variabilnost Glis glis lobanja geometric morphometry geographic variability temporal variability Glis glis skull true true false [E. Oblak Zvonar] Slovenski jezik Angleški jezik Magistrsko delo/naloga 2019-09-16 11:34:48 2019-11-20 17:11:56 2022-08-09 09:50:16 2019-12-10 08:16:33 2019 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 599.323.2(043.2) 24916744 URN:SI:UM:DK:JTMP1P0M MAG_Oblak_Zvonar_Eva_2019.pdf MAG_Oblak_Zvonar_Eva_2019.pdf 1 5ACB9CB2A7045949419187FBE57341C7 2d027cc90fad0abe8863a4968d474ecaa3f669fd466ad9e3621398add0af819f f96b8b52-7c10-11eb-bb7a-00155d0001ca 20.500.12556/dkum/1eb21e4d-bc57-431b-b131-39ca24b8c326 https://dk.um.si/Dokument.php?lang=slv&id=137988 Fakulteta za naravoslovje in matematiko 0 0 0