Comparison of dietary habits of house (Hemidactylus turcicus L.) and wall (Tarentola mauritanica L.) gecko on the island of Hvar during spring

Stanec, Maja (2011) Comparison of dietary habits of house (Hemidactylus turcicus L.) and wall (Tarentola mauritanica L.) gecko on the island of Hvar during spring. Diploma thesis, Faculty of Science > Department of Biology.

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Abstract

The sympatric populations of 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 the goal of this research is to explore what are their dietary habits and if there are any differences between two species. Samples were gathered by extracting the stomach contents and main groups of prey were determined. Considering the size of prey, larger T. mauritanica eats larger prey, but does not exclude smaller prey, and smaller H. turcicus is somewhat limited by its size to smaller prey. Both species use technics ambush hunting and active foraging. Both eat mostly nonpoisonous prey, then prey with venomous sting and the least the poisonous prey. Both species prefer semihard prey, then soft prey and the least hard prey. By volume and by quantity, the most important group during spring is Aranea (spiders), the large specimens. When comparing two species of geckos, significant differences are apparent within groups of Coleoptera, Dermaptera and Diptera, which points out to a different distribution of spatial niches and avoidance of competition.

Item Type: Thesis (Diploma thesis)
Keywords: Hemidactylus turcicus, Tarentola mauritanica, active foraging, Aranea, Diptera, Coleoptera, competition, ecological niche
Supervisor: Tadić, Zoran
Date: 2011
Number of Pages: 42
Subjects: NATURAL SCIENCES > Biology
Divisions: Faculty of Science > Department of Biology
Depositing User: Grozdana Sirotic
Date Deposited: 18 Jul 2014 10:45
Last Modified: 18 Jul 2014 10:45
URI: http://digre.pmf.unizg.hr/id/eprint/2516

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