Classification / Names Common names | Synonyms | CoL | ITIS | WoRMS

Environment: milieu / climate zone / depth range / distribution range Ecology

Others. Subtropical; 78°N - 33°N, 3°E - 80°W (Ref. 124582)

Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions

Northern and Central Pacific, Atlantic and the Arctic. Polar to subtropical.

Length at first maturity / Size / Weight / Age

Maturity: L_m ? 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 Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference References | Coordinator | Collaborators

Lepage, D. 2007. (Ref. 7816)

IUCN Red List Status (Ref. 130435)

Near Threatened (NT) (A2d+3d+4d; C1); Date assessed: 07 August 2018

CITES status (Ref. 108899)

Not Evaluated

CMS (Ref. 116361)

Appendix II: Migratory species conserved through agreements

Threat to humans

Harmless

Human uses

| FishSource |

Tools

E-book | Field guide

More information

Countries
FAO areas
Ecosystems
Occurrences
Introductions
Stocks
Ecology
Diet
Food items

Common names
Synonyms
Predators
Reproduction
Maturity
Spawning
Fecundity
Eggs
Egg development

Age/Size
Growth
Length-weight
Length-length
Morphology
Larvae
Abundance

References
Mass conversion

Collaborators
Pictures

Internet sources

Gavia adamsii (Gray, 1859)