气候变化领域集成服务门户(CCPortal): Body mass, flipper length, oxidative balance indices and telomere length of king penguin chicks (A. patagonicus) on Possession Island

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DOI	https://doi.org/10.1594/PANGAEA.810206
	Body mass, flipper length, oxidative balance indices and telomere length of king penguin chicks (A. patagonicus) on Possession Island
	Geiger; Sylvie; le Vaillant; Maryline; Lebard; Thomas; Reichert; Sophie; Stier; Antoine; Le Maho; Yvon; Criscuolo; Francois
发布日期	2012-04-15
数据集类型	dataset
英文简介	One of the reasons for animals not to grow as fast as they potentially could is that fast growth has been shown to be associated with reduced lifespan. However, we are still lacking a clear description of the reality of growth-dependent modulation of ageing mechanisms in wild animals. Using the particular growth trajectory of small king penguin chicks naturally exhibiting higher-than-normal growth rate to compensate for the winter break, we tested whether oxidative stress and telomere shortening are related to growth trajectories. Plasma antioxidant defences, oxidative damage levels and telomere length were measured at the beginning and at the end of the post-winter growth period in three groups of chicks (small chicks, which either passed away or survived the growth period, and large chicks). Small chicks that died early during the growth period had the highest level of oxidative damage and the shortest telomere lengths prior to death. Here, we show that small chicks that grew faster did it at the detriment of body maintenance mechanisms as shown by (i) higher oxidative damage and (ii) accelerated telomere loss. Our study provides the first evidence for a mechanistic link between growth and ageing rates under natural conditions.
空间范围	Latitude: -46.416700 * Longitude: 51.866700
时间范围	2008-08-30T00:00:00 - 2009-01-31T00:00:00
语种	英语
国家	国际
学科大类	气候变化
学科子类	气候变化
文献类型	数据集
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/215534
推荐引用方式 GB/T 7714	Geiger,Sylvie,le Vaillant,et al. Body mass, flipper length, oxidative balance indices and telomere length of king penguin chicks (A. patagonicus) on Possession Island.2012-04-15.https://doi.org/10.1594/PANGAEA.810206.