Non-invasive tracking the on-shore occurrence of the atypically pigmented animals and determination of land residency duration of leucistic seals would help us find out more about the rotation of the migrating population. During seven austral summer seasons (2011–2018), by counting the animals every 10 days at the Cape Lions Rump shore, King George Island, South Shetlands, in the Antarctic Specially Protected Area No. 151 and the adjacent ice-free land (31.52 km2) we registered fourteen leucistic individuals per a total of 43,919 animals. Moreover, daily monitoring of local fauna resulted in further 33 leucistic animals (together 47, in all seasons). Whilst the results of 10-day censuses of the total population were similar inter-seasonally, a tendency for increased occurrence of leucistic individuals in successive seasons was revealed. Generally, the number of animals increased significantly as season progressed. Since leucistic individuals stayed on-shore for 1–2 days usually, it can be hypothesised that the observation of migrating Antarctic fur seals every 3 days does not involve the same individuals. Also, additional every 5-day censuses taken in one season in ASPA 151 resulted in a higher seasonal number of animals, which proves that more frequent counts help us estimate population abundance more efficiently. Thus, every 5-day counts are proposed as a feasible and justified method of population monitoring.

中文翻译：

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南极海狗（Arctocephalusgagella）每年迁徙和乔治王岛上白斑个体在岸上出现的时间模式

非侵入性跟踪非典型色素动物在岸上的发生并确定白斑海豹在陆地上的居住时间将有助于我们了解更多关于迁徙种群轮换的信息。在南极洲的七个夏季（2011-2018 年）期间，每 10 天在南设得兰群岛乔治王岛的 Cape Lions Rump 岸边、第 151 号南极特别保护区和邻近的无冰土地（31.52 km2) 我们在总共 43,919 只动物中登记了 14 个白化个体。此外，对当地动物群的日常监测导致另外 33 只白化动物（总共 47 只，在所有季节）。虽然总人口的 10 天普查结果在季节间相似，但揭示了连续季节白化个体出现率增加的趋势。一般来说，随着季节的进行，动物的数量显着增加。由于白化个体通常在岸上停留 1-2 天，因此可以假设每 3 天观察一次迁徙南极海狗的观察不涉及同一个体。此外，在 ASPA 151 的一个季节中，每 5 天进行一次额外的人口普查会导致动物的季节性数量增加，这证明更频繁的计数有助于我们更有效地估计种群数量。因此，建议每 5 天进行一次计数作为一种可行且合理的人口监测方法。在 ASPA 151 的一个季节中每 5 天进行一次额外的人口普查导致动物的季节性数量增加，这证明更频繁的计数有助于我们更有效地估计种群数量。因此，建议每 5 天进行一次计数作为一种可行且合理的人口监测方法。在 ASPA 151 的一个季节中每 5 天进行一次额外的人口普查导致动物的季节性数量增加，这证明更频繁的计数有助于我们更有效地估计种群数量。因此，建议每 5 天进行一次计数作为一种可行且合理的人口监测方法。