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Morfometrična analiza mandibul treh vrst debelorepih skakačev, Pygeretmus (Rodentia: Mammalia) = A morphometric analysis of three species of fat-tailed jerboas from the genus Pygeretmus (Rodentia: Mammalia) : magistrsko delo
Raj, Nejc
Debelorepi skakači (rod Pygeretmus) iz reda glodavcev (Rodentia) živijo predvsem v glinenih puščavah in polpuščavah centralne Azije (Nowak, 1999). Zanimala nas je morfološka evolucija pri treh vrstah ...tega rodu: Pygeretmus platyurus (Lichtenstein, 1823), Pygeretmus pumilio (Kerr, 1792) in Pygeretmus zhitkovi (Vinogradov, 1937). Morfometrično analizo smo izvedli na mandibuli (spodnji čeljustnici), raziskovalna vprašanja pa smo naslovili na preverjanje sekundarnega spolnega dimorfizma, geografske variabilnosti posameznih vrst ter njihove medvrstne variabilnosti. Osnovni cilj je prepoznati filogenetski signal od ekološke pogojeno komponente morfometrične variabilnosti. Obstoj sekundarnega spolnega dimorfizma in prisotnost prostorske heterogenosti smo preverjali s statistično analizo podatkov. Dobljene rezultate smo primerjali z obstoječo klasifikacijo. Naši rezultati niso bili v nasprotju s trenutno klasifikacijo treh vrst. Pri dveh vrstah (P. pumilio in P. platyurus) smo potrdili visoko signifikantno geografsko heterogenost, katero smo razložili z dvema ključnima okoljskima dejavnikoma, količino padavin in temperaturo v puščavskem habitatu. Zaradi fragmentarnih genetskih analiz rodu Pygeretmus rezultatov nismo mogli komentirati v širšem filogenetskem okviru.
Type of material - master's thesis
; adult, serious
Publication and manufacture - Maribor : [N. Raj], 2018
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