Aves |
Charadriiformes |
Laridae
环境：氛围 / 气候带 / 深度上下限 / 分布范围
生态学
Others; 淡水; 半咸淡水. Tropical; 84°N - 36°S, 130°W - 128°E (参考文献 124582)
Indo-Pacific, Atlantic Ocean and the Arctic. Tropical to polar.
首次成熟时的长度 / 大小 / 重量 / 年龄
成熟度: Lm ? range ? - ? cm Max length : 66.0 cm TL 雄鱼/尚未辨别雌雄; (参考文献 8812); 最大体重: 1.1 kg (参考文献 356)
Culmen: 5.09 cm; tarsus: 5.715 cm; wing: 41.15 cm.
Total Length: 56 to 66 cm; Wingspan: 137 (Ref. 8812) to 147 cm (Ref. 84934). Total population is unknown but with over 1,000,000 pairs in the Palearctic and over 150,000 pairs in eastern North America. Population has expanded and is now considered a pest in some European countries (Ref. 84934). Colonies of these birds can extend to 2 km (Ref. 87784). It has a 70% dispersal rate (Ref. 87790). Dipping; surface seizing; shallow plunge diving; coastal; <100 km (Ref. 356). Largely dependent on freshwater and terrestrial environments. Feeds mostly on non-fish vertebrate prey. In the North Sea off the coasts of Scotland and northern England, is known to partially feed on the sandeel, Ammodytes marinus (Ref. 95711). Breeds colonially in a wide variety of habitats including roofs in North America, Europe and northeast Asia (Ref. 84934). One of its observed behavior is to balance between attack and fleeing, these birds redirects their aggression and attack to a substitute object like grass pulling (Ref. 87789). As for coloniality, they visit breeding colonies for a year to select a colony, a potential nesting site, and to obtain a mate to determine if the site is where young are successfully reared (Ref. 84934).
生命周期和交配行为
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
主要参考文献
参考文献 | 合作者 | 合作者
Stiles, F.G. 1984 Status and conservation of seabirds in Costa Rican waters. In Croxall, J.P., Evans, P.G.H. and Schreiber, R.W. (eds.), Status and Conservation of the World's Seabirds. ICBP Technical Publication 2:223-229. (参考文献 5856)
世界自然保护联盟红皮书
(参考文献 130435: Version 2025-2 (Global))
Not Evaluated
Not Evaluated
对人类的威胁
人类利用
FAO - Publication: search | FishSource |
工具
更多信息
人口动态成长最大年龄/尺寸长度-重量关系长短关系体长-频率质量转换丰度
网络资源
基于模型的估算
回复力
(Ref. 69278): |
高度, 族群倍增时间少于 15个月 (K=23.52-45.31) |
渔业脆弱性
(参考文献 71543) |
Moderate to high vulnerability (46 of 100). |
价格分类
(参考文献 80766): |
Unknown. |
