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DKUM
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Title:
Prostorska in časovna variabilnost lobanje navadnega polha (Glis glis)
Authors:
ID
Oblak Zvonar, Eva
(Author)
ID
Janžekovič, Franc
(Mentor)
More about this mentor...
ID
Kryštufek, Boris
(Comentor)
Files:
MAG_Oblak_Zvonar_Eva_2019.pdf
(2,38 MB)
MD5: 5ACB9CB2A7045949419187FBE57341C7
PID:
20.500.12556/dkum/1eb21e4d-bc57-431b-b131-39ca24b8c326
Language:
Slovenian
Work type:
Master's thesis/paper
Typology:
2.09 - Master's Thesis
Organization:
FNM - Faculty of Natural Sciences and Mathematics
Abstract:
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.
Keywords:
geometrijska morfometrija
,
prostorska variabilnost
,
časovna variabilnost
,
Glis glis
,
lobanja
Place of publishing:
Maribor
Publisher:
[E. Oblak Zvonar]
Year of publishing:
2019
PID:
20.500.12556/DKUM-74994
UDC:
599.323.2(043.2)
COBISS.SI-ID:
24916744
NUK URN:
URN:SI:UM:DK:JTMP1P0M
Publication date in DKUM:
20.11.2019
Views:
1566
Downloads:
156
Metadata:
Categories:
FNM
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:
OBLAK ZVONAR, Eva, 2019,
Prostorska in časovna variabilnost lobanje navadnega polha (Glis glis)
[online]. Master’s thesis. Maribor : E. Oblak Zvonar. [Accessed 10 April 2025]. Retrieved from: https://dk.um.si/IzpisGradiva.php?lang=eng&id=74994
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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:
16.09.2019
Secondary language
Language:
English
Title:
Spatial and temporal variability of the fat dormouse (Glis glis) skull
Abstract:
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.
Keywords:
geometric morphometry
,
geographic variability
,
temporal variability
,
Glis glis
,
skull
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