Usporedba prehrane kućnog (Hemidactylus turcicus L.) i zidnog (Tarentola mauritanica L.) macaklina na otoku Hvaru tijekom ljeta

master's thesis

• Title (english): Comparison of dietary habits of house (Hemidactylus turcicus L.) and wall (Tarentola mauritanica L.) gecko in the island of Hvar during summer
• Author: Petra Žeželj
• Mentor: Zoran Tadić (mentor)
• Committee member: Jasna Lajtner (predsjednik povjerenstva)
• Committee member: Sandra Radić Brkanac (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Biology); Zagreb
• Defense date and country: 2010, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Biology

Abstract

Simpatrijske populacije jedinih dviju vrsta macaklina u Hrvatskoj, kućnog (Hemidactylus turcicus) i zidnog (Tarentola mauritanica), nalazimo upravo na otoku Hvaru, a pošto je njihov međuodnos u vidu prehrane dosada bio nepoznanica, istražila sam čime se hrane i postoje li razlike. Uzorci su prikupljeni ispumpavanjem želudaca te su utvrđene glavne skupine plijena. Obzirom na veličinu, macaklini jedu sve kategorije plijena, što znači da jedinke veće vrste (T. mauritanica) jedu veći plijen, pritom ne zanemarujući manji. Manja vrsta (H. turcicus) ograničena je na manje kategorije plijena. Obje vrste služe se tehnikom aktivnog lova. Kod kućnih macaklina postoji intraspecijski kanibalizam. U vidu otrovnosti jedu najviše neotrovnog plijena, a plijen s otrovnim ubodom čak svaki treći macaklin te ne prave razliku u tvrdoći plijena. Za obje vrste ljeti volumno je najbitnija skupina Orthoptera, a količinski Araneae. Postoje značajne razlike pri usporedbi dviju vrsta kod skupina Homoptera i Isopoda što ukazuje na različitu raspodjelu prostornih niša i izbjegavanje interspecijske kompeticije.

Abstract (english)

The sympatric populations of the only two species of geckos in Croatia, house (Hemidactylus turcicus L.) and wall gecko (Tarentola mauritanica L.) can be found on the island of Hvar and considering their interactions in the aspect of dietary habits were unknown, I explored what they are and if there are any differences. Samples were gathered by extracting the stomach contents and main groups of prey were determined. Considering the size of prey, geckos eat all categories, which means that the larger (T. mauritanica) eats larger prey, but does not exclude smaller prey, and smaller H. turcicus is somewhat limited by it's size to smaller prey. Both species use active foraging. House geckos exibit canibalism. Both eat mostly nonpoisonous prey, venomous prey is eaten by every third gecko and there is no difference in prey hardness. By volume, the most important group during summer is Orthoptera, and by quantity Araneae. When comparing two species of geckos, significant differences are apparent within groups of Homoptera and Isopoda which points to a different distribution of spatial niches and avoidance of competition.

• Keywords: Hemidactylus turcicus; Tarentola mauritanica; aktivan lov; Orthoptera; Homoptera; kompeticija
• Keywords (english): Hemidactylus turcicus; Tarentola mauritanica; active foraging; Orthoptera; Homoptera; competition
• Language: croatian
• URN:NBN: urn:nbn:hr:217:646021
• Study programme: Title: Biology; specializations in: Ecology; Course: Ecology; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra biologije (magistar/magistra biologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2018-04-04 10:37:55