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Title:Ontogenetski razvoj spodnje čeljustnice pri vrtni voluharici (Microtus subterraneus) pristop z geometrijsko morfometrijo : magistrsko delo
Authors:ID Pšajd, Marko (Author)
ID Janžekovič, Franc (Mentor) More about this mentor... New window
ID Kryštufek, Boris (Comentor)
Files:.pdf MAG_Psajd_Marko_2021.pdf (1,54 MB)
MD5: DD4A1ADC0A3196DCD9CBDCA080F6B031
PID: 20.500.12556/dkum/03fae62b-b3e9-4278-9dcd-18d04c88ebaf
 
Language:Slovenian
Work type:Master's thesis/paper
Typology:2.09 - Master's Thesis
Organization:FNM - Faculty of Natural Sciences and Mathematics
Abstract:Z uporabo metod geometrijske morfometrije smo analizirali morfološko variabilnost spodnje čeljustnice pri vrtni voluharici (Microtus subterraneus). Analizirali in ovrednotili smo morebitni pojav sekundarnega spolnega diformizma ter variabilnost v velikosti in obliki spodnje čeljustnice med ontogenetskim razvojem. Raziskovalni material je obsegal 236 spodnjih čeljustnic vrtne voluharice vzgojenih v in vitro pogojih na Karlovi Univerzi v Pragi. Sekundarni spolni dimorfizem ni bil izražen niti v velikosti niti obliki spodnje čeljustnice, zato smo oba spola obravnavali združeno. Velikost in oblika spodnje čeljustnice vrtne voluharice sta se tekom ontogeneze spreminjali. Z največjo stopnjo rasti se je spodnja čeljustnica razvijala do šestdesetega dneva starosti, po tem pa je bila rast umirjena a konstantna, razvoj oblike pa se je zaustavil. Potrdili smo signifikantne razlike v velikosti spodnje čeljustnice med starostnimi razredi. Juvenilni osebki imajo najmanjšo spodnjo čeljustnico, ki pa se s starostjo konstantno povečuje skozi celotno življenjsko obdobje. Oblika spodnje čeljustnice se je spreminjala glede na starostne razrede. Najbolj so odstopali juvenilni osebki medtem ko pri adultnih in senilnih osebkih ni prihajalo do značilnih razlik v obliki spodnje čeljustnice. Spodnje čeljustnice mlajših in starejšh osebkov so odstopale od povprečne oblike v alveolni regiji in v njenem zadnjem delu. Z analizo ontogenetske alometrije smo dokazali tesno povezavo med obliko in velikostjo spodnje čeljustnice. Odnos med obliko in velikostjo je bil pri vseh starostnih skupinah bolj ali manj linearen.
Keywords:Microtus subterraneus, spodnja čeljustnica, geometrijska morfometrija, ontogenija, spolni dimorfizem, alometrija
Place of publishing:Maribor
Place of performance:Maribor
Publisher:[M. Pšajd]
Year of publishing:2021
Number of pages:IX, 46 f.
PID:20.500.12556/DKUM-78666 New window
UDC:599.323.52:591.152(043.2)
COBISS.SI-ID:84852739 New window
NUK URN:URN:SI:UM:DK:WIEEFOOE
Publication date in DKUM:15.11.2021
Views:1239
Downloads:68
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:01.02.2021

Secondary language

Language:English
Title:Postnatal development of the pine vole Microtus subterraneus geometric morphometric approach
Abstract:Using the methods of geometrics morphometrics, we analyzed the morphological variability of the mandible of the European pine vole (Microtus subterraneus). We analyzed and evaluated the putative phenomenom of sexual dimorphism and variability in size and shape during ontogenetic development. The research material included 236 mandibles of the specimens breed in vitro in the Charles University in Prague. Because no secondary sexual dimorphism was detected in size or shape of the mandible, all analyses were conducted on pooled sexes. Size and shape of the mandible changed during the ontogenetic development. The greatest level of development was detected during the first 60 days of life. Afterwards, the growth was steady and constant, while shape showed no further change. We confirmed significant differences in size between age groups. Juvenile specimens had the smallest mandibles which grew at constant pace throughout the entire span of life. The shape of the mandible varied according to age groups. Variability in shape was the greatest amoung juvenile specimens. Meanwhile there was no significant shape difference between adults and senile specimens. Juvenile and adult voles showed shape differences in both major regions of the mandible, the alveolar and the posterior region, respectively. Ontogenetic allometry retrieved close correlation between the mandible shape and size. The relationship was more or less linear in all age groups.
Keywords:Microtus subterraneus, mandible, geometric morphometrics, ontogeny, sexual dimorphism, allometry


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