Vagrant Subantarctic fur seal at Cape Shirreff, Livingston Island, Antarctica

被引：0

作者：

Torres, Daniel ^{[2
]}

Acevedo, Jorge ^{[1
,3
]}

Torres, Daniel E. ^{[4
]}

Vargas, Romeo ^{[5
]}

Aguayo-Lobo, Anelio ^{[6
]}

机构：

[1] Univ Magallanes, Punta Arenas, Chile

[2] Univ Pedro Valdivia, Escuela Med Vet, Fac Ciencias Agropecuarias, Santiago, Chile

[3] Fdn Ctr Estudios Cuaternario CEQUA, Punta Arenas, Chile

[4] Univ Las Amer, Escuela Med & Vet, Fac Ciencias Agropecuarias & Ambientales, Santiago, Chile

[5] Gobernac Maritima Castro, Dept Medio Ambiente Acuat, Chiloe, Chile

[6] Inst Antartico Chileno INACH, Punta Arenas, Chile

来源：

POLAR BIOLOGY | 2012年 / 35卷 / 03期

关键词：

Arctocephalus tropicalis; Fur seals; South Shetland Islands; Dispersion; PRINCE-EDWARD-ISLANDS; ARCTOCEPHALUS-TROPICALIS; SOUTHERN-OCEAN; GOUGH ISLAND; POPULATION-CHANGES; AMSTERDAM ISLAND; MACQUARIE ISLAND; FORAGING ECOLOGY; SEASONAL-CHANGES; MARION-ISLAND;

D O I：

10.1007/s00300-011-1082-2

中图分类号：

X176 [生物多样性保护];

学科分类号：

090705 ;

摘要：

A vagrant adult male Subantarctic fur seal Arctocephalus tropicalis was observed among Antarctic fur seals A. gazella at Cape Shirreff, Livingston Island, Antarctica, which is located to similar to 4,190 and similar to 5,939 km from the nearest breeding colonies of Subantarctic fur seals. Although the colony of origin of this animal and the reason for its movement outside its distribution range are unknown, this sighting shows the high dispersal capacity of this species and provides an insight into possible changes in its distribution. Although this vagrant was not observed with females Antarctic fur seal, news sightings in the future could result in viable hybrid, and introgressive hybridization could represent a threat for Cape Shirreff population recovery, if still the population way to go to recover to presailing levels.

引用

页码：469 / 473

页数：5

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