Intra- and interspecific variability of digestive tract morphology in Podarcis siculus and Podarcis melisellensis lizards

Jančula, Anja

prikaz prve stranice dokumenta Intra- and interspecific variability of digestive tract morphology in Podarcis siculus and Podarcis melisellensis lizards

Embargo period 2025-09-19

master's thesis

Intra- and interspecific variability of digestive tract morphology in Podarcis siculus and Podarcis melisellensis lizards

Zagreb: University of Zagreb, Faculty of Science, 2023. urn:nbn:hr:217:845032

Jančula, Anja

University of Zagreb
Faculty of Science
Department of Biology

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APA 6th Edition

Jančula, A. (2023). Intra- and interspecific variability of digestive tract morphology in Podarcis siculus and Podarcis melisellensis lizards (Master's thesis). Zagreb: University of Zagreb, Faculty of Science. Retrieved from https://urn.nsk.hr/urn:nbn:hr:217:845032

MLA 8th Edition

Jančula, Anja. "Intra- and interspecific variability of digestive tract morphology in Podarcis siculus and Podarcis melisellensis lizards." Master's thesis, University of Zagreb, Faculty of Science, 2023. https://urn.nsk.hr/urn:nbn:hr:217:845032

Chicago 17th Edition

Harvard

Jančula, A. (2023). 'Intra- and interspecific variability of digestive tract morphology in Podarcis siculus and Podarcis melisellensis lizards', Master's thesis, University of Zagreb, Faculty of Science, accessed 20 January 2025, https://urn.nsk.hr/urn:nbn:hr:217:845032

Vancouver

Jančula A. Intra- and interspecific variability of digestive tract morphology in Podarcis siculus and Podarcis melisellensis lizards [Master's thesis]. Zagreb: University of Zagreb, Faculty of Science; 2023 [cited 2025 January 20] Available at: https://urn.nsk.hr/urn:nbn:hr:217:845032

IEEE

A. Jančula, "Intra- and interspecific variability of digestive tract morphology in Podarcis siculus and Podarcis melisellensis lizards", Master's thesis, University of Zagreb, Faculty of Science, Zagreb, 2023. Available at: https://urn.nsk.hr/urn:nbn:hr:217:845032

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Title	Intra- and interspecific variability of digestive tract morphology in Podarcis siculus and Podarcis melisellensis lizards
Title (croatian)	Intra- i interspecijska varijabilnost morfologije probavila kod gušterica Podarcis siculus i Podarcis melisellensis
Author	Anja Jančula
Mentor	Anamaria Štambuk (mentor)
Committee member	Anamaria Štambuk (predsjednik povjerenstva)
Committee member	Duje Lisičić (član povjerenstva)
Committee member	Dražen Balen (član povjerenstva)
Committee member	Neven Bočić (član povjerenstva)
Committee member	Gordana Medunić (član povjerenstva)
Granter	University of Zagreb Faculty of Science (Department of Biology) Zagreb
Defense date and country	2023-09-19, Croatia
Scientific / art field, discipline and subdiscipline	NATURAL SCIENCES Biology
Abstract	Upon translocation of five pairs of Podarcis siculus from islet Pod Kopište to islet Pod Mrčaru in 1971 newly established Pod Mrčaru population underwent significant ecological in the course of only 35 years. The shift towards omnivory resulted in morphological changes, the appearance of cecal valves, and a prolonged digestive tract. This thesis studies occurrence of cecal valves in insular and mainland populations of Podarcis siculus and Podarcis melisellensis. Both species have high within-population variability of hind gut morphology. However, the among-population differences in frequencies of specific hind gut morphotypes was much more prominent in P. siculus. Cecal valves were almost specific for P. siculus, which also exhibited longer digestive tract. The occurrence of cecal valves was not particularly more prevalent in insular population, was not sex dependent, was not correlated with the presence of nematodes in the hind gut, and did not exhibit strong heredity. Overall, my result point to ecologically driven appearance of cecal valves in P. siculus and, contrary to previous opinions, its wide spread occurrence across different populations and habitats
Abstract (croatian)	Nakon translokacije pet parova Podarcis siculus guštera sa otočića Pod Kopište na otočić Pod Mrčaru 1971. godine, novouspostavljena populacija na otočiću Pod Mrčaru pokazala je značajne ekološke promjene nakon svega 35 godina. Prijelaz prema omnivornoj prehrani rezultirao je u morfološkim promjenama, pojavi cekalnih valvi i produljenom probavnom traktu. Ovaj diplomski rad proučava pojavu cekalnih valvi u otočnim i kopnenim populacijama guštera Podarcis siculus i Podarcis melisellensis. Obje vrste pokazuju visoku unutarpopulacijsku varijabilnost morfologije cekuma. Međutim, razlike između populacija u frekvenciji specifičnih morfotipova cekuma bile su izraženije kod vrste P. siculus. Cekalni valvi su bili gotovo specifični za vrstu P. siculus, koja također ima i duži probavni trakt. Pojava cekalnih valvi nije bila izraženija kod otočnih populacija, nije ovisila o spolu, nije bila povezana s prisutnošću oblića u cekumu i nije pokazala visoku nasljednost. Dakle, moji rezultati ukazuju na ekološki uvjetovanu pojavu cekalnih valvi kod vrste P. siculus i, suprotno prethodnim mišljenjima, njihovu široku rasprostranjenost među različitim populacijama i staništima.
Keywords
Keywords (croatian)
Language	english
URN:NBN	urn:nbn:hr:217:845032
Study programme	Title: Enviromental Sciences Study programme type: university Study level: graduate Academic / professional title: magistar/magistra struke znanosti o okolišu (magistar/magistra struke znanosti o okolišu)
Type of resource	Text
File origin	Born digital
Access conditions	Embargoed access Embargo expiration date: 2025-09-19
Terms of use
Repository	Repository of the Faculty of Science
Created on	2023-11-15 13:37:55