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Interaction between animal cognition and animal personality
Houšková, Markéta ; Landová, Eva (advisor) ; Šíchová, Klára (referee)
Personality is an important characteristic of individual variability which in some way restricts the full behavioural flexibility. Generally, it is not known, what is the relationship between environmental variability and variability in cognitive abilities of animals? More specifically, how this relationship impacts on the evolution of behavioural plasticity and the expression of animal personality. It is assumed that there is a correlation between the type of personalities and cognitive abilities but mutual causal relationship of this interaction is not yet fully understood. Proactive types of personalities in cognitive tests seem to be neophilic but slower in adapting to changes in the environment or in the analysing of signals with the changed meaning (reversal learning). On the contrary, reactive types of personalities are probably neophobic, they less risk and they are more flexible. However, it is questionable whether these behavioural types have an influence on cognitive abilities and how this influence manifests itself specifically to them. In this thesis, we will focus on whether and how different types of personalities are reflected in these cognitive abilities for each species and what is the methodology for testing these dependencies. Key words: animal personality, coping style,...
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Mechanisms of relationship between melanin-based colouration and behavioural syndromes in birds
Nacházelová, Martina ; Javůrková, Veronika (advisor) ; Tomášek, Oldřich (referee)
Melanins are the most common pigments incorporated into birds' feathers. Since melanin-based coloration is variable in the extent and intensity, its function is considered to be particularly cryptic and mechanical, hardening the feather structure. However, recently it has been found that melanin- based coloration also has a signaling function, due to the observed correlation between this type of coloration and many physiological and behavioral traits. These relationships follow from the pleiotropic effects of genes regulating the melanocortin system and the physiological effects of testosterone and corticosterone, which are involved in melanogenesis. This work describes genetic and physiological mechanisms of the relationship between melanin-based coloration and behavioral traits in birds and, based on available studies, supports the signaling function of this type of coloration. Melanin-based coloration has been shown to be positively correlated with aggressiveness and dominance, sexual activity, coping with stress, a fast strategy of exploratory behavior, parental care, and anti-predator behavior in many bird species. However, despite intense research interest in this topic in last decade, it is worth noting that more experiments focused on species with a distinct sexual dichromatism or...
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Interaction between animal cognition and animal personality
Houšková, Markéta ; Landová, Eva (advisor) ; Šíchová, Klára (referee)
Personality is an important characteristic of individual variability which in some way restricts the full behavioural flexibility. Generally, it is not known, what is the relationship between environmental variability and variability in cognitive abilities of animals? More specifically, how this relationship impacts on the evolution of behavioural plasticity and the expression of animal personality. It is assumed that there is a correlation between the type of personalities and cognitive abilities but mutual causal relationship of this interaction is not yet fully understood. Proactive types of personalities in cognitive tests seem to be neophilic but slower in adapting to changes in the environment or in the analysing of signals with the changed meaning (reversal learning). On the contrary, reactive types of personalities are probably neophobic, they less risk and they are more flexible. However, it is questionable whether these behavioural types have an influence on cognitive abilities and how this influence manifests itself specifically to them. In this thesis, we will focus on whether and how different types of personalities are reflected in these cognitive abilities for each species and what is the methodology for testing these dependencies. Key words: animal personality, coping style,...
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Mechanisms of relationship between melanin-based colouration and behavioural syndromes in birds
Nacházelová, Martina ; Javůrková, Veronika (advisor) ; Tomášek, Oldřich (referee)
Melanins are the most common pigments incorporated into birds' feathers. Since melanin-based coloration is variable in the extent and intensity, its function is considered to be particularly cryptic and mechanical, hardening the feather structure. However, recently it has been found that melanin- based coloration also has a signaling function, due to the observed correlation between this type of coloration and many physiological and behavioral traits. These relationships follow from the pleiotropic effects of genes regulating the melanocortin system and the physiological effects of testosterone and corticosterone, which are involved in melanogenesis. This work describes genetic and physiological mechanisms of the relationship between melanin-based coloration and behavioral traits in birds and, based on available studies, supports the signaling function of this type of coloration. Melanin-based coloration has been shown to be positively correlated with aggressiveness and dominance, sexual activity, coping with stress, a fast strategy of exploratory behavior, parental care, and anti-predator behavior in many bird species. However, despite intense research interest in this topic in last decade, it is worth noting that more experiments focused on species with a distinct sexual dichromatism or...
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Behavioral differences in selected species of Callitrichinae
MÁSÍLKOVÁ, Michaela
This thesis is focused on comparison of behavioral differences in species of tamarins that form mixed-species troops and species that live in single-species groups. Costs and benefits of mixed-species troops are considered in general and in particular within the Callitrichinae. The behavioral syndrom approach is evaluated and its use on inter-species level is suggested for further research of behavioral differences in reviewed species.
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