Aves |
Charadriiformes |
Stercorariidae
Environment: milieu / climate zone / Mức độ sâu / distribution range
Sinh thái học
Tầng nổi. Polar
Indo-Pacific, Southwest Atlantic and Antarctic Atlantic. Subtropical to polar.
Length at first maturity / Bộ gần gũi / Weight / Age
Chín muồi sinh dục: Lm ? range ? - ? cm Max length : 53.0 cm TL con đực/không giới tính; (Tài liệu tham khảo 8812); Khối lượng cực đại được công bố: 1.3 kg (Tài liệu tham khảo 356)
Wing: 39.55 cm.
Wingspan: 127 cm (Ref. 8812). A pelagic, long-lived seabird. Breeds mainly along the coast and associated islands in the Antarctic continent, possibly extending inland in the South Shetland and South Orkney Islands; possibly the southernmost breeding bird in the world, recorded at Amundsen-Scott Station at the South Pole. In some localities, may be found nesting in sympatry with Brown Skuas (Stercorarius antarcticus) and notably feed exclusively at sea while Brown Skuas feed on land (Ref. 95073). However, where there is allopatric nesting, it forages both at sea and terrestrially, mainly on penguin eggs and chicks (Ref. 95081). Exhibits a variety of foraging tactics but feeds mainly on penguins and pelagic fish. First breeding at 7 to 9 years of age. Breeding pairs nest in areas without snow and ice; typically lays two eggs. Size of breeding colonies vary; the largest colony at Cape Crozier, Ross Island, with ca.1000 breeding pairs. At Cape Crozier, breeding span recorded at almost 16 years. Monogamous for multiple seasons and with high site-fidelity. Generally breed in association with Adelie Penguins and may be the only avian predator bearing a major impact on populations of breeding seabirds in the Antarctic (Ref. 95073).
Life cycle and mating behavior
Chín muồi sinh dục | Sự tái sinh sản | Đẻ trứng | Eggs | Sự sinh sản | Larvae
Harrison, P. 1983 Seabirds an identification guide. Houton Muffin Company 488pp. 1600 painted in full color 324 distribution maps. (Tài liệu tham khảo 8812)
IUCN Red List Status
(Tài liệu tham khảo 130435: Version 2025-1)
CITES status (Tài liệu tham khảo 108899)
Not Evaluated
CMS (Tài liệu tham khảo 116361)
Not Evaluated
Threat to humans
Human uses
| FishSource |
Các công cụ
Thêm thông tin
Population dynamicsSự sinh trưởngMax. ages / sizesLength-weight rel.Length-length rel.Length-frequenciesMass conversionSự phong phú Life cycleSự tái sinh sản
Chín muồi sinh dục
Sự sinh sản
Đẻ trứng
Eggs
Egg development
Larvae
PhysiologyThành phần ô-xy
Human RelatedStamps, coins, misc.
Các nguồn internet
Estimates based on models
Preferred temperature
(Ref.
115969): 0.2 - 18.2, mean 6.4 (based on 1318 cells).
Thích nghi nhanh
Chiêù cao, thời gian nhân đôi của chủng quần tối thiểu là dưới 15 tháng (K=10.07-40.21).
Fishing Vulnerability
Moderate vulnerability (41 of 100).
Price category
Unknown.
