Aves |
Procellariiformes |
Diomedeidae
Environment: milieu / climate zone / تغييرات عمق / distribution range
بوم شناسي
. Tropical
Pacific Ocean and Western Central Atlantic.
Length at first maturity / Size / Weight / سن
بلوغ: Lm ? range ? - ? cm Max length : 81.0 cm TL جنس نر / بدون خواص جنسي; (مرجع 8812); بيشينه وزن گزارش شده: 2.9 kg (مرجع 356)
Wing: 20.3 cm.
Total Length: 79 to 89 cm (Ref. 8812). Total annual breeding population of some 362,000 pairs representing about 1,200,000 to 1,400,000 birds (Ref. 84934). Occurs over open ocean (Refs. 356, 122680). Mainly feeds at night and often far from breeding colony. Forages with conspecifics, but rarely with other species. Seizes prey from the surface while sitting on the water. Scavenges on carrion and follows fishing boats. Diet consists mainly of squid as well as deep-water crustaceans, fish and flyingfish eggs (Ref. 122680).
Life cycle and mating behavior
بلوغ | تولید مثل | تخم ریزی | Eggs | Fecundity | Larvae
Breeding birds arrive at the islands in the first week of November, egg laying starts late November to early December. Eggs start to hatch in late January to early February, and by the second week of August all birds have fled the island (Ref. 96995).
مآخذ اصلی
مراجع | هماهنگ كننده | همكاران
Lepage, D. 2007 Avibase -the World Bird Database. http://www.bsc-eoc.org/avibase/avibase.jsp [accessed 09/07/2007]. (مرجع 7816)
وضعيت در فهرست قرمز IUCN
(مرجع 130435: Version 2025-1)
وضعيت از نظر سايتس (مرجع 108899)
Not Evaluated
خطر برای انسان ها
استفاده انسانی
| FishSource |
ابزارها
اطلاعات بيشتر
Population dynamicsرشدMax. ages / sizesLength-weight rel.Length-length rel.نوسانات طولیMass conversionفراواني Life cycleتولید مثلبلوغFecundityتخم ریزیEggsنمو تخمLarvae PhysiologyOxygen consumption
Human RelatedStamps, coins, misc.
منابع اينترنتي
Estimates based on models
جهندگی
زياد, كمينه زمان لازم براي دو برابر شدن جمعيت ، كمتر از 15 ماه (K=3.4-9.56).
Fishing Vulnerability
Moderate to high vulnerability (52 of 100).
طبقه قيمت
Unknown.
