Infracrvena osjetljivost zmija kao prilagodba u hvatanju plijena

undergraduate thesis

• Title (english): Infrared sensitivity in snakes as a specialiation for prey capture
• Author: Petra Lisičar
• Mentor: Zoran Tadić (mentor)
• 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

Vidne i kemijske informacije imaju podjednaku važnost u zmija sa termoreceptorima, kao i u zmija bez sposobnosti termorecepcije. Ulogu toplinskih informacija u tipova Crotalus i Python zamjenjuju mehaničke informaciju u tipova Vipera i Elaphe, te udava (Boidae). Morfološki gledano termorecepcija i mehanorecepcija postoji u svih zmija, ali funkcionalno se koriste ili toplinske ili mehaničke informacije pri ponašanju prije ili/i za vrijeme napada (Boa constrictor je jedini prijelazni oblik ponašanja). Mehanoreceptori, kao i termoreceptori se sastoje od golih živčanih završetaka, te registriraju osjet boli, dodira i promjene temperature. Organi osjetljivi na infracrveno zračenje su jamice, te obzirom na položaj, građu i broj jamica postoje tri tipa. U jamičarki (porodica Viperidae, potporodica Crotalinae) velike jamice se nalaze između očiju i nosnica s obje strane glave, dok u udava (porodica Boidae) i pitona (porodica Python) brojne manje jamice su u nizu na supralabijalnim ljuskama.

Abstract (english)

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.

• Keywords: zmije; infracrvena osjetljivost
• Keywords (english): snakes; infrared sensitivity
• Language: croatian
• URN:NBN: urn:nbn:hr:217:652826
• Study programme: Title: Ecology; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) biologije (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) biologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2018-03-28 08:08:29