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首页> 外文期刊>Polar biology >Post-breeding dispersal of Adelie penguins (Pygoscelis adeliae) nesting at Signy Island, South Orkney Islands
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Post-breeding dispersal of Adelie penguins (Pygoscelis adeliae) nesting at Signy Island, South Orkney Islands

机译：繁殖后的阿德利企鹅（Pygoscelis adeliae）在南奥克尼群岛的西尼岛筑巢

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摘要

ARGOS satellite telemetry and Global Location Sensors (geolocators) were used to identify the moult locations and the winter foraging dispersal of Adelie penguins after they left their breeding colonies on Signy Island in the South Orkney Islands. Animals were tracked during the period December 2004 to October 2005. All birds displayed a similar pattern of migratory behaviour, remaining away from colonies for approximately 9 months, at distances of up to 2,235 km. Moult locations were within the pack ice. Mean daily travel speeds to the moult locations were significantly faster when moving through open water than through pack ice. Moult occurred during February/March within a narrow latitudinal range (65-71°S), at a mean distance of 126 km from the ice edge; the mean duration of individual moult was c. 18.6 days. After moult, penguins spent the subsequent winter months moving north or north-eastward within the expanding winter pack ice, at a mean distance of 216 km from the ice edge, and in areas with ice cover >80%. The penguins returned to the vicinity of their colony between September 26 and October 22, 2005. This dependence of Adelie penguins on sea ice habitat suggests that any further reductions in sea ice extent in the Weddell Sea region would potentially have important impacts on the population processes of this pagophilic species.
机译：ARGOS卫星遥测和全球定位传感器（地球定位仪）被用来识别阿德利企鹅在南奥克尼群岛的西尼岛离开繁殖地之后的蜕皮位置和冬季觅食的扩散。在2004年12月至2005年10月期间对动物进行了跟踪。所有鸟类都表现出类似的迁徙行为，在距离殖民地约9个月的时间里，距离长达2235公里。换毛地点在冰块内。在开阔水域中移动时，到达换毛地点的平均每日行进速度明显快于浮冰。蜕皮发生在2月/ 3月，纬度范围狭窄（65-71°S），距冰边缘平均126公里；个人换羽的平均持续时间为c。 18.6天。换羽后，企鹅度过了随后的冬季，在不断扩大的冬季冰块中向北或东北移动，与冰边缘的平均距离为216 km，并且冰盖面积大于80％。企鹅在2005年9月26日至10月22日期间返回了他们的殖民地附近。阿德利企鹅对海冰栖息地的依赖性表明，韦德尔海地区海冰面积的任何进一步减少都可能对种群进程产生重要影响这种嗜嗜性物种。

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