Brzina zagrijavanja primorske gušterice (Podarcis siculus) i zidnog macaklina (Tarentola mauritanica) u ovisnosti o intenzitetu osvjetljenja i boji kože u laboratorijskim uvjetima

master's thesis

• Title (english): Heating rate of the Italian wall lizard (Podarcis siculus) and Moorish gecko (Tarentola mauritanica) depending on the light intensity and skin coloration in laboratory conditions
• Author: Lea Ivanović
• Mentor: Duje Lisičić (mentor)
• Committee member: Duje Lisičić (predsjednik povjerenstva)
• Committee member: Zoran Marčić (član povjerenstva)
• Committee member: Ivan Čanjevac (član povjerenstva)
• Committee member: Kristina Pikelj (član povjerenstva)
• Committee member: Neven Bočić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Biology); Zagreb
• Defense date and country: 2023-09-28, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Biology

Abstract

Primorska gušterica (Podarcis siculus) gušter je glatke površine kože, a zidni macaklin
(Tarentola mauritanica) hrapave. Oboje su mediteranske vrste koje nastanjuju urbana sunčana
staništa. Ovim radom pokušala sam istražiti utjecaje površinske teksture kože na brzinu
zagrijavanja ovih vrsta te njihovu ulogu u prilagođavanju radijacijskim uvjetima njihovog
staništa. Kako bi ove razlike bile što vidljivije, pri mjerenjima kontrolirano je obojenje guštera
bojanjem te su primjenjivana osvjetljenja različitog intenziteta. Brzina zagrijavanja određena je
pomoću mjerenja tjelesne temperature guštera. Izmjerene temperature prilagođene su
Gompertzovoj krivulji te su definirana tri usporediva parametra: teorijska maksimalna
temperaturu (a), vrijeme najveće promjene temperature (b) i brzina zagrijavanja (c). Usporedba
ovih parametra pokazala je izostanak razlike u brzini zagrijavanja ovisno o površinskoj teksturi
kože. Unatoč različitim tretmanima obojenja i osvjetljenja nije bilo razlike u brzini zagrijavanja
što može upućivati na regulaciju brzine zagrijavanja fiziološkim procesima. Obje vrste su
dosezale više temperature i ranije postizale vrijeme najveće promjene temperature na izravnom
osvjetljenju. Tamnije obojeni zidni macaklini su se zagrijavali do viših temperatura te su prije
postizali vrijeme najveće promjene temperature. Rezultati ukazuju na moguće različite
morfofiziološke prilagodbe termalnoj niši kod vrsta T. mauritanica i P. siculus, ali ove razlike
treba potvrditi dodatnim istraživanjima.termoregulacija,

Abstract (english)

The Italian wall lizard (Podarcis siculus) is a lizard with smooth skin texture, while the Moorish
gecko (Tarentola mauritanica) has rough skin texture. Both are Mediterranean species that
inhabit urban sunny habitats. Through this paper, I attempted to uncover the effects of skin
surface texture on the heating rate and its role in adapting to the radiation conditions of a habitat.
To make these differences more apparent during measurements, lizards were colored, and
illumination of varying intensity was applied. The heating rate was determined by measuring
the body temperature of lizards. Measured temperatures were fitted to the Gompertz curve,
defining three comparable parameters: theoretical maximum temperature (a), the time of the
greatest temperature change (b) and heating rate (c). A comparison of these parameters revealed
no difference in heating rate based on skin surface texture. Despite different coloring and
illumination conditions, there was no difference in heating rate, suggesting regulation of heating
rate through physiological processes. Both species reached higher temperatures and achieved
the time of the largest temperature change earlier under direct illumination. Darker-colored
Moorish wall geckos heated up to higher temperatures achieved the time of the largest
temperature change earlier. The results indicate possible different morphophysiological
adaptations to the thermal niche in the species T. mauritanica and P. siculus, but these
differences need to be confirmed by additional research

• Keywords: termoregulacija; tekstura kože; ekološka niša; Gompertzova krivulja
• Keywords (english): thermoregulation; skin texture; ecological niche; Gompertz curve
• Language: croatian
• URN:NBN: urn:nbn:hr:217:852457
• Study programme: Title: Environmental Sciences-University graduate programme; Study programme type: university; Study level: graduate; Academic / professional title: sveučilišni/a magistar/magistra struke znanosti o okolišu (sveučilišni/a magistar/magistra struke znanosti o okolišu)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Embargoed access; Embargo expiration date: 2025-09-28
• Created on: 2023-10-10 11:57:34