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  • Title: The impact of egg incubation temperature on the personality of oviparous reptiles.
    Author: Siviter H, Charles Deeming D, Rosenberger J, Burman OH, Moszuti SA, Wilkinson A.
    Journal: Anim Cogn; 2017 Jan; 20(1):109-116. PubMed ID: 27599495.
    Abstract:
    Personality traits, defined as differences in the behavior of individual animals of the same species that are consistent over time and context, such as 'boldness,' have been shown to be both heritable and be influenced by external factors, such as predation pressure. Currently, we know very little about the role that early environmental factors have upon personality. Thus, we investigated the impact of incubation temperature upon the boldness on an oviparous reptile, the bearded dragon (Pogona vitticeps). Eggs, from one clutch, were incubated at two different average temperatures within the normal range. After hatching the lizards were raised under the same environmental conditions. Novel object and novel environment tests were used to assess personality. Each test was repeated in both the short term and the long term. The results revealed that incubation temperature did impact upon 'boldness' but only in the short term and suggests that, rather than influencing personality, incubation temperature may have an effect on the development of behavioral of oviparous reptiles at different stages across ontogeny.
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