Variation of egg size in the willow ptarmigan

Variation of egg size in the willow ptarmigan ISSN 10674136, Russian Journal of Ecology, 2011, Vol. 42, No. 4, pp. 347–349. © Pleiades Publishing, Ltd., 2011. Original Russian Text © V.V. Tarasov, 2011, published in Ekologiya, 2011, No. 4, pp. 317–320. SHORT COMMUNICATIONS V. V. Tarasov Institute of Plant and Animal Ecology, Ural Branch, Russian Academy of Sciences, ul. Vos’mogo Marta 202, Yekaterinburg, 620144 Russia email: Received April 26, 2010 Keywords: willow ptarmigan, egg size, variation, the Yamal Peninsula. DOI: 10.1134/S1067413611040163 A study of the willow ptarmigan (Lagopus lagopus L.) The average coefficient of variation (CV) in egg vol in Scotland (Moss et al., 1981) showed that the young ume within one clutch was 3.10 ± 0.18% (n = 48), hatched from larger eggs were growing more rapidly whereas that for all measured eggs was significantly and had a higher survival rate, compared to the young higher: 6.89 ± 0.24% (t = 12.6), indicating that egg size from smaller eggs. The purpose of this study was to varied between females. No connection of these dif analyze the factors that influence the size of eggs in ferences with the age of the birds was revealed: the eggs this species on the Yamal Peninsula. of yearling (subadult) females Russian Journal of Ecology Springer Journals

Variation of egg size in the willow ptarmigan

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SP MAIK Nauka/Interperiodica
Copyright © 2011 by Pleiades Publishing, Ltd.
Life Sciences; Environment, general; Ecology
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