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Blood glucose concentration in Barn Swallow (\kur{Hirundo rustica}): sources of variability and association with fitness
VLČKOVÁ, Kamila
Glucose is an important fuel for intense activities of short duration, but in high concentration is reputed to be tissue-damaging at least in mammals. In birds, blood glucose concentration is naturally considerably higher than in other vertebrates of similar body mass. In this thesis, we focused on blood glucose concentration in the wild populations of the Barn Swallow (Hirundo rustica). Firstly, we investigated the level of repeatability of blood glucose concentration to find out if this trait is individual-specific and thus, it is subject to selection. Secondly, we examined which environmental and physiological variables explain variation in blood glucose level. Thirdly, we tested association of blood glucose level with fitness related traits, namely individual body mass and lifespan.

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