Odgovor kapelske svijetlice (Telestes karsticus Marčić et Mrakovčić, 2011) na prisutnost potočne pastrve (Salmo trutta Linnaeus, 1758) kao predatora

master's thesis

• Title (english): Response of the species of Karst Dace (Telestes karsticus Marčić and Mrakovčić, 2011) to the predator of the brown trout (Salmo trutta Linnaeus, 1758)
• Author: Vesna Ahel
• Mentor: Davor Zanella (mentor)
• Committee member: Davor Zanella (predsjednik povjerenstva)
• Committee member: Marija Gligora Udovič (član povjerenstva)
• Committee member: Silvija Černi (član povjerenstva)
• Committee member: Tvrtko Dražina (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Biology); Zagreb
• Defense date and country: 2019-09-30, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Biology

Abstract

U ovome su radu prvi puta zabilježeni podaci o ponašanju kapelske svijetlice u odnosu na izloženost predatoru potočnoj pastrvi. Istraživanje se temelji na dvije vrste ponašanja, tijekom perioda bez prisutnosti predatora te u periodu za vrijeme prisutnosti predatora. Tijekom perioda bez prisustva predatora kod svih promatranih jedinki zabilježena je smanjena kohezija plova. Povećana kohezija plova zabilježena tijekom prisustva predatora. Zabilježena je povećana udaljenost plova od pregrade u akvariju nakon uvođenja predatora kod svih promatranih jedinki. Udaljenosti plova od dna akvarija prije podražaja iznosila je do 25 cm, dok je tijekom podražaja do 3 cm. Tijekom perioda bez prisustva predatora jedinke su bile različito vizualne usmjerene dok prilikom mjerenja podražaja sve promatrane jedinke vizualno su bile usmjerene prema predatoru. Zabilježeno je isto ponašanje kod svih promatranih jedinki različitih skupina.

Abstract (english)

In this study, data on the behavioural response of juvenile individuals of the karstic dace (Telestes karsticus) the exposure of the predator to the trout (Salmo trutta) were recorded. The research is based on two types of behaviour, during the period without the presence of predators, and in the period during the presence of predators. During the period without the presence of predators, reduced cohesion of the units was observed in all observed individuals, while increased cohesion of the units during the exposure to predators. An increased distance of the units from the barrier in the aquarium was observed after the introduction of predators. The distance from the bottom of the aquarium before the stimulus was up to 25 cm, during the stimulus up to 3 cm. In the period before exposure to the predator, the individuals were differently visual focused, whereas when measuring the stimuli, all observed individuals were visually directed toward the predator. The same behaviour was observed in all observed groups.

• Keywords: kapelska svijetlica; izloženost; predator; potočna pastrva
• Keywords (english): krast dace; response; predator; brown trout
• Language: croatian
• URN:NBN: urn:nbn:hr:217:794403
• Study programme: Title: Ecology; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra ekologije i zaštite prirode (magistar/magistra ekologije i zaštite prirode)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2019-10-16 07:50:07