Kleptoparasitism: are there ''obssesive stealers'' in the animal world?

Telenta, Nina (2015) Kleptoparasitism: are there ''obssesive stealers'' in the animal world?. Bachelor's thesis, Faculty of Science > Department of Biology.

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Abstract

Kleptoparasitism is a form of feeding in which an organism is stealing food (prey) that has been caught by another organism. This behaviour is widely seen throughout the animal world, but birds (class Aves) contain by far the biggest number of these thiefs. Kleptoparasites are opportunists that use theft as a tool to acquire food. In situations where kleptoparasites can steal food from another organism, they will do it if they estimate that the benefits of stealing are higher than those of potential losses. In these dangerous actions injuries and even death can be afflicted to the kleptoparasites by the host. However, there are cases where the host is not defending its prey, thus choosing to share or give up the food without a fight. This is most common when the kleptoparasite is larger than the host: - birds of prey are able to kill the host. Obligate type of kleptoparasitism is very rare manly because the host doesn't register the kleptoparasite as a harmful being (case of the spiders Curimagua bayano and their host Diplura sp.).

Item Type: Thesis (Bachelor's thesis)
Supervisor: Ternjej, Ivančica
Date: 2015
Number of Pages: 13
Subjects: NATURAL SCIENCES > Biology
Divisions: Faculty of Science > Department of Biology
Depositing User: Silvana Šehić
Date Deposited: 11 Mar 2016 11:20
Last Modified: 11 Mar 2016 11:20
URI: http://digre.pmf.unizg.hr/id/eprint/4591

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