Oncorhynchus clarkii, Cutthroat trout : fisheries, aquaculture, gamefish, aquarium

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Oncorhynchus clarkii (Richardson, 1836)

Cutthroat trout
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Native range | All suitable habitat | Point map | Year 2100
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Oncorhynchus clarkii   AquaMaps   Data sources: GBIF OBIS
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Image of Oncorhynchus clarkii (Cutthroat trout)
Oncorhynchus clarkii
Female picture by Bull. U.S. Bur. Fish.

Classificação / Names Nomes comuns | Sinônimos | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (peixes com raios nas barbatanas) > Salmoniformes (Salmons) > Salmonidae (Salmonids) > Salmoninae
Etymology: Oncorhynchus: Greek, onyx, -ychos = nail + Greek, rhyngchos = snout (Ref. 45335);  clarkii: Named after William Clark, leader of the Lewis and Clark expedition (Ref. 1998).  More on author: Richardson.

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

; marinhas; gua doce; estuarina demersal; andromo (Ref. 27547); intervalo de profundidade 0 - 200 m (Ref. 50610).   Temperate; ? - 23°C (Ref. 12741); 61°N - 40°N

Distribuição Países | Áreas da FAO | Ecossistemas | Ocorrências | Point map | Introduções | Faunafri

Eastern Pacific: northern parts of Prince William Sound, Alaska, south to the Eel River in northern California, USA and is found in most streams emptying into the Pacific.

Widely introduced into various streams and lakes within its natural range, as well as into a few lakes in eastern North America. In some streams it may be the most numerous sport fish present, while other streams support only small populations. At least 14 subspecies have been historically recognized (Ref. 5723).

Comprimento de primeira maturação / Tamanho / Peso / Idade

Maturity: Lm ?, range 15 - 18 cm
Max length : 99.0 cm TL macho/indeterminado; (Ref. 12204); peso máx. publicado: 18.6 kg (Ref. 9988); idade máx. registrada: 10 anos (Ref. 3221)

Descrição suscinta Morfologia | Morfometria

Espinhos dorsais (total): 0; Raios dorsais (total): 8-11; Espinhos anais 0; Raios anais : 8 - 12. Color is variable. Generally dark green to greenish-blue on back, olive-green on upper flank, silvery on lower flank and belly; flanks spots below lateral line are more numerous anteriorly; irregular spots on dorsal, adipose and caudal fins and the anal, pectoral and pelvic fin bases; gill covers are pinkish. Those found at sea or recent migrants to freshwater are silvery with a bluish back, yellowish lower flanks and fins, and sparse spots.

Biologia     Glossário (p.ex. epibenthic)

Prefers relatively small streams, with gravel bottoms and gentle gradients. Spawning adults migrate from the sea into streams to spawn (Ref. 27547). The young fish usually stay in the stream for a year or two before entering the sea, but some populations never got to sea at all. In rare cases, some individuals of sea-going populations, may remain in fresh water for as long as eight years (Ref. 28866, 28869). Feeds on small fishes, crustaceans, and insects (Ref. 4925). The flesh is orange-red and of excellent flavor (Ref. 27547). Utilized fresh and eaten fried, broiled, and baked (Ref. 9988). This species does not compete well with other fish, tends to hybridize, and is unable to withstand fishing pressure = depletion of stocks.

Ciclo de vida ou comportamento de acasalamento Maturidade | Reprodução | Desova | Ovos | Fecundidade | Larvas

Spawning occurs both daytime and nighttime. The female selects a site and builds a redd while the male courts her and drives away other males. Upon completion of the redd, the female settles into the pitt, immediately followed by the male. The pair releases eggs and sperm simultaneously and the eggs fall into the spaces between the gravel. The female then moves to the upstream edge of the redd and resumes digging, thereby covering the eggs. When completely covered, the female may use the new redd to spawn once more or she may look for another spot and repeat the entire process. Both males and females spawn with one or more members of the opposite sex (Ref. 12204, 27547). Reproductive strategy: synchronous ovarian organization, determinate fecundity (Ref. 51846).

Referência principal Upload your references | Referências | Coordenador | Colaboradores

Coad, B.W., 1995. Encyclopedia of Canadian fishes. Canadian Museum of Nature and Canadian Sportfishing Productions Inc. Singapore. (Ref. 12204)

Status na Lista Vermelha da UICN (Ref. 123251)


CITES (Ref. 118484)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Ameaça para os humanos

  Harmless





Uso pelos humanos

Pescarias: espcies comerciais; Aquacultura: espcies comerciais; peixe esportivo: sim; Aquário: Aquários públicos
FAO(Publication : search) | FishSource |

Mais informação

Nomes comuns
Sinônimos
Metabolismo
Predadores
Ecotoxicologia
Reprodução
Maturidade
Desova
Agregação de desova
Fecundidade
Ovos
Desenvolvimento dos ovos
Idade/Tamanho
Crescimento
Peso-comprimento
Comprimento-comprimento
Frequências de comprimento
Morfometria
Morfologia
Larvas
Dinâmica larval
Recrutamento
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Referências
Aquacultura
Perfil para aquacultura
Estirpes
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Frequências alélicas
Hereditariedade
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Conversão de massa
Colaboradores
Fotos
Stamps, Coins Misc.
Sons
Ciguatera
Velocidade
Tipo de natação
Área branquial
Otólitos
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Fontes da internet

Estimates based on models

Preferred temperature (Ref. 115969): 6.1 - 9.7, mean 8.1 °C (based on 81 cells).
Índice de diversidade filogenética (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00912 (0.00713 - 0.01166), b=3.02 (2.97 - 3.07), in cm total length, based on LWR estimates for this species (Ref. 93245).
Nível Trófico (Ref. 69278):  3.8   ±0.56 se; based on food items.
Generation time: 4.4 ( na - na) years. Estimated as median ln(3)/K based on 1 growth studies.
Resiliência (Ref. 120179):  médio(a), tempo mínimo de duplicação da população 1,4 - 4,4 anos (tm=2-3; tmax=10; Fec=226).
Vulnerabilidade (Ref. 59153):  Moderate to high vulnerability (48 of 100) .
Categoria de preço (Ref. 80766):   Very high.