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Jsou osobnostní rysy hraboše polního provázány s denním rytmem pohybové aktivity?
KUBÍKOVÁ, Pavlína
In this study, the relationship between personality traits and daily activity of Common voles (Microtus arvalis) was investigated. Thirty four voles were captured for tests from the wild and kept separately under stable light (L:D, 12:12) and ambient temperature (19 ? 1 oC) laboratory conditions. Voles were subjected to Open Field (OF) tests to determine their personality traits on locomotor activity and shy-bold gradients. They were then monitored in the PhenoTyper boxes, where their activity was recorded for seven days. In this thesis, it was found that more locomotor active and bold individuals in the OF test are also more active in the PhenoTyper box, are more prone to periodicity and regular ultradian rhythms, and have more activity in the dark. Shy individuals are often immobile (most often in the dark), which weakens the periodicity of their ultradian rhythms. Thus, greater boldness in the common vole leads to greater nocturnal activity, and shyness rather to greater nocturnal immobility. The personality traits were associated with daily activity, periodicity, and ultradian rhythms.
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Vliv pachové preference na reprodukční úspěch u hraboše polního
BÍLKOVÁ, Pavlína
The aim of this work is to find out whether odor preference can affect the reproductive success of voles. Odors are generally able to reveal a lot of information about his carrier, according to which individuals may be able to choose a more compatible partner. With this partner, they increase the probability of transferring good genes to their offspring. The more investing sex is the one he chooses, and for most species it is the females. In the T-labyrinth, we gave the females a choice of odors from two males and, according to the time spent with one or the other, we evaluated the preference for one of them using a monitoring program. The females were then paired with either the male they preferred or the male they did not prefer. The number of pups from each pair was the main indicator for evaluating our results. These show that female voles are able to choose a more suitable partner according to their smell, with whom they produce more offspring.
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Underlying causes and stability of intraspecific variation in behaviour of microtine rodents
ŠÍCHOVÁ, Klára
Two crucial issues related to personality in non-human animals have been identified: firstly, the underlying 'causes' of personality and,secondly, the stability of behavioural repertoires (essentially the defining feature of personality) have both been the subject of long-standing debate. This thesis is focused on investigating stable inter- and intra- individual differences in the behaviour of wildcaught bank voles, Myodes glareolus (that varied according to mtDNA type), and in common voles, Microtus arvalis. The first study, using wild voles, revealed empirical evidence about the effects of sex and mtDNA type on individual differences in basal metabolic rate and in behaviour in the open field which provides measures of approach and avoidance (here, generically termed 'proactivity') and which relate to several theoretical conceptualisations of animal personality. The second study demonstrated the presence of stable individual differences in reactions to exposure to open field test and radial maze in common voles, which were shaped by the social environment and in turn, related to cognitive efficiency. The same species was used in the third study documenting the distinct temporal patterns of behavioural plasticity that manifested over repeated exposures to the open field test. We suggest that this distinct temporal patterning in habituation, whilst it varied over time, was predictable in nature and therefore a reflection of a stable underlying personality. To conclude, this body of thesis work draws together a number of influencing factors, and considers their contribution to animal personality.
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Influence of developmental rate on behavioral personality forming
SCHMIDTMAJEROVÁ, Eva
The aim of this thesis was to empirically examine one of the theories regarding the laws of intraspecific variability in animal behavior, which assumes that differences in behavior are directly related to individual differences in the rate of growth. One of our most common rodents, common vole (Microtus arvalis) was chosen as a model species, mainly because lots of previous studies on this species have demonstrated, among other things, presence of consistent differences in behavior.
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The development of an expression of personality traits: the common vole (\kur{Microtus arvalis}) study
URBÁNKOVÁ, Gabriela
The aim of this study was investigate the development of behaviour of common vole in usually used personality test - Open Field test. This study also used a new behavioural approach ? behavioural reaction norms - to investigate the relationship among personality traits, behavioural plasticity and body weight and chosen social characteristic. There were found the effects of adult body weight and litter size on individual behavioural plasticity and also the negative correlation between personality traits and behavioural plasticity, signaling the different level of habituation dependent on personality traits.
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Early social environment affects development of personality traits in common vole \kur{(Microtus arvalis).}
ŠÍCHOVÁ, Klára
The study investigated the effect of non-genetic social factors (represented by litter size, litter sex composition, and affinity to age cohort) on the development of consistent inter-specific differences in reaction to novelty in common voles (Microtus arvalis). The voles were tested in three behavioural experiments ? Forced Open Filed test (FOF), Unforced Open Field test (UFOF), and Radial-arm maze (RAM). A siginificant impact of compontents of social environment was detected.
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Food selection in Microtus arvalis: the role of plant functional traits
LANTOVÁ, Petra
Foraging by captive common voles (Microtus arvalis) was evaluated by measuring the biomass of plant species consumed in a vivaria experiment and by re-analysing of already published data on plant selection. The experiment showed that foraging was strongly plant species-specific, while data re-analysis indicated the traits plant guild and life span as the best predictors for dietary selection, i.e., voles would eat more grasses and/or legumes than forbs. The study suggests that the voles usually consume grasses in the field because grasses are abundant and readily available, but prefer protein-rich forbs when possible.
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