Infrared sensitivity in snakes as a specialiation for prey capture

Lisičar, Petra (2010) Infrared sensitivity in snakes as a specialiation for prey capture. Bachelor's thesis, Faculty of Science > Department of Biology.

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Abstract

Visual and chemical information have the same role in snakes possessing heat receptors as in those without. The role of thermal cues in Crotalus and Python is substituted with mechanical cues in Vipera, Elaphe and Boa. Morphologically both thermoreception and mechanoreception exists in all snakes, but functionally either heat or mechanical information is used in hunting behavior (Boa constrictor is the only intermediate case). Mechanoreceptors, as well as heat receptors, are blind nerve endings that function as pain, touch and temperature sensors. The organs of infrared sensing are pits. The pit vipers (family Viperidae, subfamily Crotalinae) possess large pits between the eye and the nostril on both sides of the head, while boas (family Boidae) and pythons (family Python) have more smaller pits lining the upper lip, in or between the scales.

Item Type: Thesis (Bachelor's thesis)
Supervisor: Tadić, Zoran
Date: 2010
Number of Pages: 13
Subjects: NATURAL SCIENCES > Biology
Divisions: Faculty of Science > Department of Biology
Depositing User: Silvana Šehić
Date Deposited: 03 Oct 2014 10:33
Last Modified: 03 Oct 2014 10:33
URI: http://digre.pmf.unizg.hr/id/eprint/2919

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