[magistrsko delo]
Rok Čuš (Author), Franc Janžekovič (Mentor), Tina Klenovšek (Co-mentor), Boris Kryštufek (Co-mentor)

Abstract

Cilj magistrskega dela je razložiti ontogenetski vidik morfometrične variabilnosti lobanje navadnega polha (Glis glis). Material je obsegal različne starostne kategorije od mladičev, ob zapustitvi gnezda, do odraslosti. Vzorec predstavlja 233 lobanj navadnega polha s Krima, Slovenija. Morfometrična analiza lobanje je bila izvedena na ventralni strani lobanje. Na fotografijah z ventralne perspektive sem določil 22 naslonskih točk. Osebki v vzorcu so bili razporejeni v 6 starostnih skupin na osnovi erupcije kočnikov. Z metodami geometrijske morfometrije sem pokazal, da ni signifikantnih razlik v velikosti ali v obliki lobanje med spoloma, zato sem v analizah združil oba spola. Tako v velikosti kot v obliki je izstopala starostna skupina 6. To je bilo pričakovano, saj so bili vanjo uvrščeni odrasli osebki v drugem letu življenja ali starejši. Mlajši osebki so imeli bobnični mehur in zobni niz relativno večja, kar kaže na alometrično rast tekom postnatalnega razvoja. Različni deli lobanje ne rastejo z enako hitrostjo ali pa ne rastejo v istem obdobju življenja. Za navadnega polha je značilno pozno poleganje mladičev. V primerjavi z evropsko tekunico (Spermophilus citellus) lobanja navadnega polha raste do dvakrat hitreje.

Keywords

magistrska dela;geometrijska morfometrija;spolni dimorfizem;alometrija;ontogenija;Glis glis;

Data

Language: Slovenian
Year of publishing:
Typology: 2.09 - Master's Thesis
Organization: UM FNM - Faculty of Natural Sciences and Mathematics
Publisher: [R. Čuš]
UDC: 599.322.2:591.152(043.2)
COBISS: 23743752 Link will open in a new window
Views: 1293
Downloads: 182
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Other data

Secondary language: English
Secondary title: Ontogenetic variation in the skull of the edible dormouse, Glis glis (Linnaeus, 1766)
Secondary abstract: The purpose of the master's thesis was to clarify the morphometric variability of the edible dormouse skull (Glis glis) from an ontogenetic perspective. The material was composed of different age groups, from young, leaving their nest, to adult animals. The sample represents 233 dormice skulls collected in Krim, Slovenia. A morphometric skull analysis was carried out on the ventral surface of the skull. In the ventral-view photographs 22 ground control points were determined. The specimens were categorized into 6 age groups based on molar eruption. Employing geometric morphometry methods, it was demonstrated that there are no gender-dependent differences in size or form of the skull, thus analyses were carried out jointly for both genders. The age group 6 stood out in both size and form, as expected, since it included one year old specimens or older. A relatively larger auditory bulla and tooth row were detected in younger specimens, indicating an allometric growth throughout the post-natal development. Different parts of the skull are not growing equally fast or they grow in a different stage of life. For dormice a later breeding season is characteristic. In addition, the skull of the edible dormouse is growing twice as fast as the one of the European ground squirrel (Spermophilus citellus).
Secondary keywords: master theses;geometric morphometrics;sexual dimorphism;allometry;ontogeny;Glis glis;
URN: URN:SI:UM:
Type (COBISS): Master's thesis/paper
Thesis comment: Univ. v Mariboru, Fak. za naravoslovje in matematiko, Oddelek za biologijo
Pages: IV, 51 f.
ID: 10916400