Jak ťuhýk obecný (Lanius collurio) rozpoznává nepřátele

RNDr. Michal NĚMEC

Doctoral thesis

How the red-backed shrike (Lanius collurio) recognizes enemies

Anotácia:

This study investigates two questions about anti-predator behaviour of the red-backed shrike. 1) Is the red-backed shrike able to assess the differing dangers represented by various types or species of predators? 2) How does the red-backed shrike recognize the predator? We found, that the red-backed shrike (Lanius collurio) adjusts its anti-predator behaviour by assessing the potential threat to themselves from different predator species and by assessing the chance of a successful attack. Further, we found that the presence of general raptor salient features is absolutely necessary for proper categorisation of the intruder as a predator, whereas the natural species-specific colouration in itself is an insufficient cue.

Abstract:

This study investigates two questions about anti-predator behaviour of the red-backed shrike. 1) Is the red-backed shrike able to assess the differing dangers represented by various types or species of predators? 2) How does the red-backed shrike recognize the predator? We found, that the red-backed shrike (Lanius collurio) adjusts its anti-predator behaviour by assessing the potential threat to themselves from different predator species and by assessing the chance of a successful attack. Further, we found that the presence of general raptor salient features is absolutely necessary for proper categorisation of the intruder as a predator, whereas the natural species-specific colouration in itself is an insufficient cue.

Kľúčové slová

ťuhýk, predátor, antipredační chování, obrana hnízda, rozpoznání nepřítele, vetřelec, kognitivní schopnosti, atrapový experiment

Jazyk práce: Czech

Datum vytvoření / odevzdání či podání práce: 19. 3. 2015

Zverejniť od: 19. 3. 2015

Obhajoba závěrečné práce

• Obhajoba proběhla 28. 4. 2015
• Vedúci: RNDr. Roman Fuchs, CSc.

UNIVERSITY OF SOUTH BOHEMIA IN ČESKÉ BUDĚJOVICE

Faculty of Science

Doctoral programme / odbor:
Zoology / Zoology