Aves |
Anseriformes |
Anatidae
Environment: milieu / climate zone / εύρος βάθους / distribution range
Οικολογία
; Γλυκού νερού; εύρος βάθους 0 - 4 m (Αναφ. 115862), usually 0 - 3 m (Αναφ. 115862). Subtropical
Arctic, Eastern Pacific and Western Atlantic: Winters from Aleutian Islands to Gulf of St Lawrence, to Californian Gulf, Mexican Gulf, Georgia south to Florida.
Length at first maturity / Μέγεθος / Weight / Age
Γεννητική Ωρίμανση: Lm ?  range ? - ? cm Max length : 49.0 cm TL αρσενικό/απροσδιόριστο; (Αναφ. 94965); μεγ. δημοσιευμένο βάρος: 900.00 g (Αναφ. 356)
Culmen: 3.135 cm; tarsus: 8.105 cm; wing: 21.15 cm.
Depth range and common depth based on occurrence (Ref. 115862). To be replaced with a better reference. Coastal (Ref. 356). Breeds in freshwater and along coasts (in Sweden and in the Gulf of Bothnia); nests in hollow trees or artificial nest-boxes. Martens (Martes martes) and jays (Garrulus glandarius) known to feed on its eggs. Ducklings preferentially feed in lakes. Main diet include Corixidae, Notonecta, Ephemerida larvae (mainly Leptophlebia vespertina), Dytiscidae adults (mainly Hyphydrus ovatus) and larvae (mainly Acilius sp. and Dytiscus sp.), and Chaoborus larvae (Ref. 95144). Displays dabbling behavior (Ref. 356). Common diving depth of 2 to 3 m (Ref. 115862).
Life cycle and mating behavior
Γεννητική Ωρίμανση | Αναπαραγωγή | Γεννοβολία | Eggs | Γονιμότητα | Larvae
SAUP Database 2006 SAUP Database. www.seaaroundus.org. (Αναφ. 356)
IUCN Red List Status
(Αναφ. 130435: Version 2025-1)
CITES status (Αναφ. 108899)
Not Evaluated
Threat to humans
Human uses
| FishSource |
Εργαλεία
Περισσότερες πληροφορίες
Population dynamicsΑύξησηMax. ages / sizesLength-weight rel.Length-length rel.Length-frequenciesMass conversionΑφθονία Life cycleΑναπαραγωγή
Γεννητική Ωρίμανση
Γονιμότητα
Γεννοβολία
Eggs
Egg development
Larvae
PhysiologyΚατανάλωση οξυγόνου
Human RelatedStamps, coins, misc.
Διαδικτυακές πηγές
Estimates based on models
Preferred temperature
(Ref.
115969): 3.6 - 23.6, mean 8.8 (based on 929 cells).
Fishing Vulnerability
Moderate vulnerability (39 of 100).
Price category
Unknown.