Aves |
Charadriiformes |
Laridae
環境：環境 / 気候帯 / 深さの範囲 / 分布範囲
生態学
Others; 新鮮な水; 汽水性の. Subtropical; 66°N - 47°S, 125°W - 179°E (参照 124582)
Atlantic, Indo-Pacific and Mediterranean. Subtropical to temperate.
初回成熟時の長さ / サイズ / 重さ / 年齢
成熟: Lm ? range ? - ? cm Max length : 59.0 cm TL オス/雌雄の選別がない; (参照 8812); 最大公表体重: 662.00 g (参照 356)
Culmen: 6.87 cm; wing: 40.02 cm.
Total Length: 48 to 59 cm; Wingspan: 127 to 140 cm (Ref. 8812). Estuarine. Found on beach and shoreline (Ref. 116102). Plunge diver; dipping; coastal (Ref. 356). Low rate of mate retention; 75% of individuals change mates between years; attributed to tendency to change nesting localities annually. Nests solitarily or colonially. Variations in nest site quality and mate quality observed. Shifts breeding location and colony site when environment becomes unstable; as in cases of flooding, a factor reducing site fidelity. Possibly a pollutant-related behavioral response to PCB (polychlorinated biphenyls) levels in the North American Great Lakes is lower nest-site tenacity of this species in the area. On the Colombia River, world's largest colony of Caspian Terns were questionably displaced in an attempt to protect hatchery-raised salmon molts on the river (Ref. 87784).
ライフサイクルと交尾行動
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
主な参考文献
参考文献 | コーディネーター | 協力者
Lepage, D. 2007 Avibase -the World Bird Database. http://www.bsc-eoc.org/avibase/avibase.jsp [accessed 09/07/2007]. (参照 7816)
IUCNのレッドリストの状況は
(参照 130435: Version 2025-2 (Global))
ワシントン条約ステータス (参照 108899)
Not Evaluated
人間に対する脅威
人間の用途
FAO - Publication: search | FishSource |
用具
インターネットの情報源
モデルに基づく推定値
漁業の脆弱性
(参照 71543) |
Moderate vulnerability (44 of 100). |
価格帯
(参照 80766): |
Unknown. |
