Národní úložiště šedé literatury Nalezeno 2 záznamů.  Hledání trvalo 0.00 vteřin. 
Vliv barevných vzorů na kategorizaci predátora u sýkory koňadry (\kur{Parus major})
MILAN, Luděk
Discrimination and categorization of predators belong to one of the most important cognitive abilities in animal´s lifes. We tried to find how coloration pattern could influence categorization of a real predator. Experiments focused on the coloration or colour pattern are mainly done with predators and their prey, for example aposematism or novel coloration stimuli. However, only a very few of these experiments are concentrated on situation, how the prey can recognize their natural predators. In our experiment, we tried to test three discrimination theories: feature theory, exemplar theory, prototype theory. In these experiments we used wild Great tit (Parus major) and dummy of Sparrowhawk (Accipiter nisus) in different type of colour pattern
Reakce čížka lesního (\kur{Carduelis spinus}), zvonka zeleného (\kur{Carduelis chloris}) a sýkory koňadry (\kur{Parus major}) na atrapu krahujce obecného (\kur{Accipiter nisus}) v klecových experimentech.
MILAN, Luděk
Discrimination and categorization of predators belong to one of the most important cognitive abilities in animal´s lifes. The most of research uses field mobbing experiments, which posses some benefits, but also disadvantages. We are not able to influence occurence of predators in surroundings, and therefore studied individuals could be affected by previous contact with them. Secondly, individuals could be also affected by climate. And thirdly, we are not able to repeat experiments with the same individual. Because of these reasons, we used cage experiments for testing predator categorization. In our experiment, we compared granivorous birds Eurasian siskin (Carduelis spinus) and Greenfinch (Carduelis chloris) with commonly tested omnivorous Great tit (Parus major).

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