Cerorhinca monocerata, Rhinoceros auklet
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Cerorhinca monocerata   (Pallas, 1811)

Rhinoceros auklet
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Classification / Names Populärnamn | synonymer | CoL | ITIS | WoRMS

Aves | Charadriiformes | Alcidae

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

; djupintervall 0 - 60 m (Ref. 62269).  Temperate; 62°N - 28°N, 119°E - 115°W

Distribution Länder | FAO områden | Ekosystem | Förekomster | Utplanteringar

Northern, Western and Eastern Pacific Ocean. Boreal to subtropical.

Length at first maturity / Size / Weight / Age

Könsmognad: Lm ?  range ? - ? cm Max length : 38.0 cm TL hane/ej könsbestämd; (Ref. 8812); publicerad maxvikt: 520.00 g (Ref. 356)

Short description Morfologi

Culmen: 3.45 cm; tarsus: 3.0 cm; wing: 15.24 cm.

Biologi     Ordlista (t.ex. epibenthic)

Total Length: 35 to 38 cm (Ref. 8812). Pursuit diver; coastal; <50 km (Ref. 356). On the Farallon Islands, this species usurps nests of smaller Cassin's Auklet by destroying eggs or chicks thereby effectively lowering its habitat competitor's reproductive success. Nest site prospecting at night. Diurnal, particularly where Auklets nest in caves, but completely nocturnal where Bald Eagle colonies are present. Based on stable isotope analysis (SIA) diet study of egg albumin, belongs to higher N signature group (based on ratios of stable isotopes of nitrogen and carbon): piscivorous (Ref. 87784).

Life cycle and mating behavior Könsmognad | Reproduktion | Lek | Eggs | Fecundity | Larvae

Main reference referenser | Koordinator | Medarbetare

Watanuki, Y. 1987 Breeding biology and foods of Rhinoceros Auklets on Teuri Island, Japan. Proceedings of the NIPR Symposium on Polar Biology 1:175-183. (Ref. 4542)

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

  Least Concern (LC) ; Date assessed: 07 August 2018

CITES status (Ref. 108899)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Human uses


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Ytterligare information

Trophic Ecology
Food items (preys)
Födosammansättning
Födointag
Predatorer
Ekologi
Ekologi
Population dynamics
Tillväxt
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Abundans
Life cycle
Reproduktion
Könsmognad
Fecundity
Lek
Eggs
Egg development
Larvae
Distribution
Länder
FAO områden
Ekosystem
Förekomster
Utplanteringar
Physiology
Syreförbrukning
Human Related
Stamps, coins, misc.
Outreach
Medarbetare
Taxonomy
Populärnamn
synonymer
Morfologi
Bilder
referenser
referenser

Internet-källor

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, sök) | Zoological Record

Estimates based on models

Preferred temperature (Ref. 115969): 6.1 - 17.6, mean 9.7 (based on 690 cells).
Resiliens (Ref. 69278): Hög, lägsta populationsfördubblingstid mindre än 15 månader (K=9.33-35.4).
Fishing Vulnerability (Ref. 71543): Low to moderate vulnerability (28 of 100).
Price category (Ref. 80766): Unknown.

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