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Animal personality structure in offspring
JANDA, Patrik
The aim of this work was to build breeding pairs of Endler's guppy (Poecilia wingei), to determine their characteristic traits ("shy" and "bold"). Then to breed offspring from these pairs, in which the same personality traits were determined using identical procedure. Finally, the composition of personality traits observed in the offspring were evaluated, consequently, compared to their parents, their heritability was calculated. Personality traits were determined using a modified "Open Field" test (test of open environment) combined with the so-called standard emergency test (test for measuring the time required to leave the safe shelter). Based on the measured data individuals were divided into "shy" and "bold". Then they composed "shy", "bold" and combined pairs (a pair of "shy" was composed of two "shy" individuals, a pair of "bold" of two "bold" individuals and a combined pair was composed of one "shy" individual and one "bold " individual). After breeding offspring of these pairs, their personality traits ("shy" and "bold") were determined in a similar way. By evaluating the results, the heritability of these traits was calculated. Moreover, during this experiment, individual preferences and positions in the column of water were also monitored when inserted into an experimental aquarium. I also examined whether it is possible to increase the number of offspring by creating a more active ("bold") pair, a less active ("shy") pair or a combined pair.
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