Common names from other countries
Environment: milieu / climate zone / depth range / distribution range
Écologie
; eau douce; saumâtre. Subtropical; 66°N - 47°S, 125°W - 179°E (Ref. 124582)
Atlantic, Indo-Pacific and Mediterranean. Subtropical to temperate.
Length at first maturity / Taille / Poids / Âge
Maturity: Lm ? range ? - ? cm Max length : 59.0 cm TL mâle / non sexé; (Ref. 8812); poids max. publié: 662.00 g (Ref. 356)
Description synthétique
Morphologie
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).
Lepage, D. 2007. (Ref. 7816)
Statut dans la liste rouge de l'IUCN (Ref. 130435)
statut CITES (Ref. 108899)
Not Evaluated
Utilisations par l'homme
| FishSource |
Outils
Sources Internet
Estimates based on models
Preferred temperature
(Ref.
115969): 9.8 - 29.1, mean 27.4 (based on 4475 cells).
Vulnérabilité
Moderate vulnerability (44 of 100).
Catégorie de prix
Unknown.
