Supplementary material from "Age-specific patterns of maternal investment in common gull egg yolk"
Posted on 2018-06-27 - 07:45
While the general patterns of age-specific changes in reproductive success are quite well established in long-lived animals, we still do not know if allocation patterns of maternally transmitted compounds are related to maternal age. We measured yolk testosterone, carotenoids and vitamins A and E levels in a population of known-aged common gulls (Larus canus) and found an age-specific pattern in yolk lutein and vitamin A concentrations. Middle-aged mothers allocated more of these substances to yolk compared to young and old mothers. These results can be explained through differences in age-specific foraging, absorption or deposition patterns of carotenoids and vitamins into yolk. If these molecules play a role in antioxidant defence and immune modulation, our results suggest a possible physiological pathway underlying the age-specific changes in reproductive success of long-lived birds in the wild.
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Urvik, Janek; Rattiste, Kalev; Giraudeau, Mathieu; Okuliarová, Monika; Hõrak, Peeter; Sepp, Tuul (2018). Supplementary material from "Age-specific patterns of maternal investment in common gull egg yolk". The Royal Society. Collection. https://doi.org/10.6084/m9.figshare.c.4147019.v1