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Gaviiformes |
Gaviidae
Environment: milieu / climate zone / depth range / distribution range
Οικολογία
. Subtropical; 78°N - 33°N, 3°E - 80°W (Ref. 124582)
Northern and Central Pacific, Atlantic and the Arctic. Polar to subtropical.
Length at first maturity / Μέγεθος / Βάρος / Age
Maturity: Lm ?  range ? - ? cm
Found on beach and shoreline (Ref. 116102). Inhabits lakes and lakeshores. Feeds primarily on fish and minimally on plant material. Breeding pairs highly territorial, employing specific vocalizations and aggressive displays and postures when sensing threat. Copulation takes place on land. The male selects the nest site; egg clutch incubation approx. 27 days with both parents taking turns. Typical brood number, 2; with both parents feeding the young; commonly, only one of the 2 survives probably due to competition for food within the brood (Ref. 95186).
Life cycle and mating behavior
Γεννητική Ωρίμανση | Αναπαραγωγή | Γεννοβολία | Αβγά | Γονιμότητα | Προνύμφες
Lepage, D. 2007. (Ref. 7816)
IUCN Red List Status (Ref. 130435)
CITES status (Ref. 108899)
Not Evaluated
Threat to humans
Harmless
Human uses
| FishSource |
Εργαλεία
Περισσότερες πληροφορίες
Age/Size
Αύξηση
Length-weight
Length-length
Μορφολογία
Προνύμφες
Αφθονία
Διαδικτυακές πηγές
Estimates based on models