Razlike u obojenju simpatrijskih vrsta krške gušterice (Podarcis melisellensis) i primorske gušterice (Podarcis siculus)

master's thesis

• Title (english): Differences in coloration of the sympatric Dalmatian wall lizard (Podarcis melisellensis) and Italian wall lizard (Podarcis siculus)
• Author: Nikolina Pavlak
• Mentor: Duje Lisičić (mentor)
• Committee member: Duje Lisičić (predsjednik povjerenstva)
• Committee member: Jasna Lajtner (član povjerenstva)
• Committee member: Ivan Čanjevac (član povjerenstva)
• Committee member: Zorica Petrinec (član povjerenstva)
• Committee member: Neven Bočić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Biology); Zagreb
• Defense date and country: 2023-07-07, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Biology

Abstract

Krška gušterica (Podarcis melisellensis) i primorska gušterica (Podarcis siculus) dvije su
simpatrijske vrste gušterica iz porodice Lacertidae. U Hrvatskoj su rasprostranjene na području
jadranske obale i otoka, a ako se nađu na istom staništu u kompeticijskom su odnosu. U
populacijama obje vrste primjetan je spolni dimorfizam u izgledu i obojenju.. Cilj ovog rada
bio je utvrditi obojenje karakteristično za svaku vrstu, kao i za svaki spol unutar vrste.
Istraživanje je provedeno na ukupno 60 jedinki, 15 mužjaka i 15 ženki svake vrste, ulovljenima
na tri kopnene lokacije - Knin, Pag i Sinj. Za određivanje boja na tijelu guštera korištena je
spektrofotometrijska analiza. Analizirana je razlika u dorzalnim i lateralnim bojama vezanim
uz kriptičnost – zelena boja na leđima i smeđa boja na bočnoj strani tijela i stražnjem dijelu
leđa te razlika u lateralnim i ventralnim bojama vezanim uz intraspecijsku komunikaciju –
plava boja ljuski bočne strane tijela te boja vrata i boja prsa. Prema dobivenim rezultatima
istraživanja može se zaključiti da kod boja vezanih uz kriptičnost sličnost između vrsta postoji
kod smeđih boja dorzalne i bočne strane tijela. Razlika između vrsta postoji kod boja vezanih
uz intraspecijsku komunikaciju, krška gušterica pokazuje veći udio žute i zelene boje na vratu
u odnosu na pripadnike vrste primorske gušterice. Spolni dimorfizam unutar vrste izražen je
kod krške gušterice gdje mužjaci imaju zeleniju boju leđa, a ženke žuće obojenje prsa. Mužjaci
obje vrste pokazuju plavije obojenje ljuski bočne strane tijela u odnosu na ženke.

Abstract (english)

The Dalmatian wall lizard (Podarcis melisellensis) and the Italian wall lizard (Podarcis
siculus) are two sympatric species from the Lacertidae family. In Croatia they are widespread
on the Adriatic coast and islands. They are in a competitive relationship when found in the
same habitat. Sexual dimorphism in appearance and coloration is noticeable in the populations
of both species. This study aimed to determine characteristic coloration for each species as well
as for each sex within the species. The research was conducted on a total of 60 individuals, 15
males and 15 females of each species caught in three mainland locations - Knin, Pag and Sinj.
Spectrophotometric analysis was used to determine the colors on the lizard's body. We
analyzed difference in dorsal and lateral colors related to crypticity – green and brown color
on the back and brown color on the side of the body and the difference in lateral and ventral
colors related to intraspecies communication – blue color of outer ventral scales and neck and
chest color. According to the results, it can be concluded that there is a similarity between the
species, it exists in colors related to crypticness – brown colors of the dorsal and lateral sides
of the body. Difference between the species exists in the colors related to intraspecies
communication, the Dalmatian wall lizard shows greater proportion of yellow and green color
on the neck compared to members of the Italian wall lizard. Sexual dimorphism within the
species is expressed in the Dalmatian wall lizard where males have a greener back and females
a yellower chest. Males of both species show a bluer coloration of outer ventral scales
compared to females

• Keywords: boja; spolni dimorfizam; intraspecijski odnosi; interspecijski odnosi; spektrofotometrija; ton boje; zasićenost boje
• Keywords (english): color; sexual dimorphism; intraspecies relations; interspecies relations; spectrophotometry; hue; saturation
• Language: croatian
• URN:NBN: urn:nbn:hr:217:751529
• 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: 2025-07-07
• Created on: 2023-07-14 12:03:18