Canada country information

Common names: [No common name]
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: | Ref:
Aquaculture: never/rarely | Ref:
Regulations: no regulations | Ref:
Uses: no uses
Comments: C: Ref. 93875.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/ca.html
National Fisheries Authority: http://www.ncr.dfo.ca/home_e.htm
Occurrences: Occurrences Point map
Main Ref: Backe, N., S. Davies, K. Conley, G. Kosmider, G. Rasmussen, H. Ibey and K. Ladell, 2011
National Database:

Common names from other countries

Californische meeuw, ... more

Classification / Names / Names Populärnamn | synonymer | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS

> Charadriiformes (Shorebirds) > Laridae ()

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

. Temperate

Utbredning Länder | FAO områden | Ekosystem | Förekomster | Utplanteringar

Eastern Pacific and Western Atlantic. Subtropical to temperate.

Length at first maturity / Size / Vikt / Age

Maturity: L_m ? range ? - ? cm Max length : 68.0 cm TL hane/ej könsbestämd; (Ref. 8812); publicerad maxvikt: 1.0 kg (Ref. 356)

Short description Morfologi

Culmen: 5.56 cm; tarsus: 7.197 cm; wing: 41.2 cm.

Total Length: 61 to 68 cm; Wingspan: 132 to 142 cm (Ref. 8812). Occupies the continental shelf; <80 km (Ref. 356). Scavengers; exhibits kleptoparasitism (Ref. 356). Opportunistic feeders that eat a wide variety of food. Based on stable isotope analysis (SIA) diet study of egg albumin, belongs to lower N signature group (based on ratios of stable isotopes of nitrogen and carbon) indicating a more planktivorous diet. Switch in diet from garbage to fish when chicks hatch for its higher nutritional content to assure higher fledging success. Early breeding and early egg-laying assures higher fledging success for this species. On the Farallon Islands, California, high nest failures recorded during ENSO (El Niño) events; severe events in 1982-1983 causing adult mortality. (Ref. 87784).

Main reference referenser | Koordinator | Medarbetare

Schreiber, R.W. 1970. (Ref. 80153)

IUCN Red List Status (Ref. 130435)

Least Concern (LC) ; Date assessed: 08 August 2018

CITES status (Ref. 108899)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Human uses

| FishSource |

Verktyg

E-book | Fälthandbok

Ytterligare information

Länder
FAO områden
Ekosystem
Förekomster
Utplanteringar
Stocks
Ekologi
Föda
Födoslag

Populärnamn
synonymer
Predatorer
Reproduktion
Könsmognad
Lek
Fecundity
Ägg
Egg development

Age/Size
Tillväxt
Length-weight
Length-length
Morfologi
Larver
Abundans

referenser
Mass conversion

Medarbetare
Bilder

Internet-källor

Estimates based on models

Preferred temperature (Ref. 115969): 5.4 - 18.5, mean 8.3 (based on 112 cells).

Resiliens (Ref. 69278) Hög, lägsta populationsfördubblingstid mindre än 15 månader (K=16.74-39.08).

Vulnerability (Ref. 71543): Moderate to high vulnerability (47 of 100).

Price category (Ref. 80766): Unknown.

Larus occidentalis Audubon, 1839