Brachyramphus marmoratus, Marbled murrelet
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Brachyramphus marmoratus   (Gmelin, 1789)

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

Aves | Charadriiformes | Alcidae

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

Others; depth range 0 - 36 m (Ref. 61831).  Polar; 62°N - 34°N, 171°E - 120°W (Ref. 125423)

Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions

Pacific Ocean: California to the Aleutian Islands. Boreal to subtropical.

Length at first maturity / Size / Weight / Age

Maturity: Lm ?  range ? - ? cm Max length : 25.0 cm TL male/unsexed; (Ref. 8812); max. published weight: 202.50 g (Ref. 356)

Short description Morphology

Culmen: 1.6 cm; tarsus: 1.59 cm; wing: 12.7 cm.

Biology     Glossary (e.g. epibenthic)

An endangered species. Nesting habitat protected under ESA in the U.S. (Ref. 87784). Total Length: 24 to 25 cm (Ref. 8812). Coastal; can be found offshore up to 300 km; thermal fronts, water <30 m deep; glacial-affected. Pursuit divers (Ref. 356). Crepuscular to nocturnal. Mate prospecting thru display and calls; nocturnal vocal displays minimal. Direct or indirect intra- and interspecific competition for nest sites. Nests in trees (Ref. 87784). Breeding pairs maintain isolation from colony until the eggs are laid (Ref. 95051). Feeds on hatchery-released pink salmon and chum salmon in Prince William Sound, Alaska. Population decline associated with mortality in fishing nets (Ref. 87784).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Reproductive productivity of the species in Salish Sea declined by at most 50% over the past 150 years (Ref. 95036).

Main reference References | Coordinator | Collaborators

Hirsch, K.V., D.A. Woodby and L.B. Astheimer 1981 Growth of a nestling Marbled Murrelet. Condor 83:264-265. (Ref. 8541)

IUCN Red List Status (Ref. 130435: Version 2025-1)

  Endangered (EN) (A2bce+3bce+4bce); Date assessed: 27 July 2020

CITES status (Ref. 108899)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Human uses


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Trophic Ecology
Food items (preys)
Diet composition
Food consumption
Predators
Ecology
Ecology
Population dynamics
Growth
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Abundance
Life cycle
Reproduction
Maturity
Fecundity
Spawning
Eggs
Egg development
Larvae
Distribution
Countries
FAO areas
Ecosystems
Occurrences
Introductions
Physiology
Oxygen consumption
Human Related
Stamps, coins, misc.
Outreach
Collaborators
Taxonomy
Common names
Synonyms
Morphology
Pictures
References
References

Internet sources

BHL | BOLD Systems | CISTI | DiscoverLife | FAO(Publication : search) | Fishipedia | GenBank (genome, nucleotide) | GloBI | Gomexsi | Google Books | Google Scholar | Google | PubMed | Tree of Life | Wikipedia (Go, Search) | Zoological Record

Estimates based on models

Preferred temperature (Ref. 115969): 5.6 - 13, mean 8.5 (based on 451 cells).
Resilience (Ref. 69278): High, minimum population doubling time less than 15 months (K=60.76).
Fishing Vulnerability (Ref. 71543): Low vulnerability (15 of 100).
Price category (Ref. 80766): Unknown.

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