Rare Piebald And Partially Leucistic Antarctic Fur Seals, Arctocephalus Gazella, At Cape Shirreff, Livingston Island, Antarctica

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作   者：

Jorge Acevedo;  Daniel Torres;  Anelio Aguayo-Lobo; 

作者机构：

01890 Punta Arenas;  Chile;  Av. Bulnes;  Fundacion Centra de Estudios del Cuaternario (CEQUA); 

关键词：

leucism;  antarctic fur seal;  piebald;  arctocephalus gazella;  antarctica; 

期刊名称：

Polar Biology

i s s n：

0722-4060

年卷期：

2009 年 32 卷 1 期

页   码：

41-45

页   码：

摘   要：

We document five cases of unusual colouration in Antarctic fur seals, Arctocephalus gazella, at Cape Shir-reff, Livingston Island, from 1991-1992 to 2005-2006 austral summer seasons. This is the first time that these colour patterns have been reported for this species. These included four rare light coloured animals and one piebald individual. The incidence of this atypical colouring was low and the lack of resightings in previous and subsequent seasons suggests that these morphs are not common in Antarctic fur seals. Although the causes of these atypical light colour patterns are uncertain the subject is interesting for study and more observations on these atypical colourations are required for a proper assessment of the ecological and physiological implications of this condition in otariids can be conducted in the future.