Stercorarius maccormicki, South polar skua

Stercorarius maccormicki   Saunders, 1893

South polar skua
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No photo available for this species.
No drawings available for Stercorariidae.

رده بندی / Names اسامي عام | مترادف | CoL | ITIS | WoRMS

Aves | Charadriiformes | Stercorariidae

Environment: milieu / climate zone / تغييرات عمق / distribution range بوم شناسي

سطح زی.  Polar

Distribution كشورها | مناطق سازمان خوار و بار جهاني (FAO) | Ecosystems | ظهور | معرفي

Indo-Pacific, Southwest Atlantic and Antarctic Atlantic. Subtropical to polar.

Length at first maturity / Size / Weight / سن

بلوغ: Lm ?  range ? - ? cm Max length : 53.0 cm TL جنس نر / بدون خواص جنسي; (مرجع 8812); بيشينه وزن گزارش شده: 1.3 kg (مرجع 356)

توصيف مختصر ريخت شناسي

Wing: 39.55 cm.

زيست شناسي     واژه نامه (بعنوان مثال epibenthic)

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 بلوغ | تولید مثل | تخم ریزی | Eggs | Fecundity | Larvae

مآخذ اصلی مراجع | هماهنگ كننده | همكاران

Harrison, P. 1983 Seabirds an identification guide. Houton Muffin Company 488pp. 1600 painted in full color 324 distribution maps. (مرجع 8812)

وضعيت در فهرست قرمز IUCN (مرجع 130435: Version 2025-1)

  حداقل نگرانی (LC) ; Date assessed: 07 August 2018

وضعيت از نظر سايتس (مرجع 108899)

Not Evaluated

CMS (مرجع 116361)

Not Evaluated

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استفاده انسانی


| FishSource |

ابزارها

E-book | راهنماي صحرايي

اطلاعات بيشتر

Trophic Ecology
Food items (preys)
تركيب غذايي
مصرف غذايي
شکارچیان
بوم شناسي
بوم شناسي
Population dynamics
رشد
Max. ages / sizes
Length-weight rel.
Length-length rel.
نوسانات طولی
Mass conversion
فراواني
Life cycle
تولید مثل
بلوغ
Fecundity
تخم ریزی
Eggs
نمو تخم
Larvae
Distribution
كشورها
مناطق سازمان خوار و بار جهاني (FAO)
Ecosystems
ظهور
معرفي
Physiology
Oxygen consumption
Human Related
Stamps, coins, misc.
Outreach
همكاران
Taxonomy
اسامي عام
مترادف
ريخت شناسي
عکس ها
مراجع
مراجع

منابع اينترنتي

BHL | BOLD Systems | CISTI | DiscoverLife | FAO(Publication : search) | Fishipedia | GenBank (ژنوم, نوکلئوتيد) | GloBI | Gomexsi | Google Books | Google Scholar | Google | PubMed | Tree of Life | Wikipedia (برو, جستجو) | Zoological Record

Estimates based on models

Preferred temperature (Ref. 115969): 0.2 - 18.2, mean 6.4 (based on 1318 cells).
جهندگی (Ref. 69278): زياد, كمينه زمان لازم براي دو برابر شدن جمعيت ، كمتر از 15 ماه (K=10.07-40.21).
Fishing Vulnerability (مرجع 71543): Moderate vulnerability (41 of 100).
طبقه قيمت (مرجع 80766): Unknown.

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