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Acipenser fulvescens Rafinesque, 1817

Lake sturgeon
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Image of Acipenser fulvescens (Lake sturgeon)
Acipenser fulvescens
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Classificação / Names Nomes comuns | Sinônimos | Catalog of Fishes(Gênero, Espécies) | ITIS | CoL | WoRMS | Cloffa

> Acipenseriformes (Sturgeons and paddlefishes) > Acipenseridae (Sturgeons) > Acipenserinae
Etymology: Acipenser: Latin, acipenser = sturgeon, 1853 (Ref. 45335);  fulvescens: From the words Acipenser, meaning sturgeon and fulvescens, yellowish (Ref. 10294).
More on author: Rafinesque.

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

; Água doce; estuarina demersal; potamódromo (Ref. 51243); intervalo de profundidade 5 - 9 m (Ref. 117245). Temperate; 60°N - 30°N, 100°W - 71°W

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

North America: St. Lawrence-Great Lakes, Hudson Bay, and Mississippi River basins.

Comprimento de primeira maturação / Tamanho / Peso / Idade

Maturity: Lm 99.7, range 90 - 120 cm
Max length : 274 cm TL macho/indeterminado; (Ref. 5723); common length : 97.5 cm TL macho/indeterminado; (Ref. 12193); peso máx. publicado: 125.0 kg (Ref. 3672); idade máx. registrada: 152 anos (Ref. 72475)

Descrição suscinta Chaves de identificação | Morfologia | Morfometria

Single row of preanal shields. Soft area on the top of the head absent and black viscera. Large blotches present on anterior half of upper surface of snout and on back. Lower surface whitish (Ref. 37032). Anal fin origin behind dorsal fin origin; scutes on back and along side same color as skin (Ref. 86798).

Biologia     Glossário (p.ex. epibenthic)

Inhabits bottom of lakes and large rivers (Ref. 10294), usually in 5-9 m depth, over mud, sand, and gravel. Occasionally enters brackish water. A specimen caught in 1952 was reputed to have been 152 years old (Ref. 6866). Search for food, with the aid of the sensory ability of the barbels, by constantly moving close to the substrate. Omnivorous, virtually anything edible that enters the mouth is sucked up and consumed. The food is worked or pulled in the mouth, often partly ejected and sucked in again (Ref. 1998). Spawning sites are rocky and boulder filled areas along the outside bend of rivers (Ref. 41542). In the 1800s, it was extensively exploited for oil to fire boilers on steamboats, animal feed and fertilizer. Later is was high-valued as smoked, caviar and isinglass (Ref. 117245). In 1951, Canada, 2,000 lbs. of caviar were made from the eggs (Ref. 37032). It continous to be an important source of food for Indigenous people in North America (Ref. 117245). Threatened due to over harvesting, habitat loss and pollution (Ref. 58490).

Ciclo de vida ou comportamento de acasalamento Maturities | Reprodução | Spawnings | Egg(s) | Fecundities | Larvas

Spawning sites are rocky and boulder filled areas along the outside bend of rivers (Ref. 41542).

Referência principal Upload your references | Referências | Coordenador | Colaboradores

Page, L.M. and B.M. Burr, 1991. A field guide to freshwater fishes of North America north of Mexico. Houghton Mifflin Company, Boston. 432 p. (Ref. 5723)

Status na Lista Vermelha da UICN (Ref. 130435)

  Em perigo (EN) (A2bcd); Date assessed: 14 September 2019

CITES


Ameaça para os humanos

  Harmless





Uso pelos humanos

Pescarias: espécies comerciais; Aquacultura: experimental; peixe esportivo: sim; Aquário: Aquários públicos
FAO - pescarias: perfil da espécie; Publication: search | FishSource |

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Trophic ecology
Itens alimentares
Diet compositions
Food consumptions
Food rations
Predadores
Ecology
Ecologia
Population dynamics
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Max. ages / sizes
Length-weight rel.
Length-length rel.
Frequências de comprimento
Mass conversions
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Abundances
Life cycle
Reprodução
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Fecundities
Spawnings
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Egg(s)
Egg developments
Larvas
Dinâmica larval
Anatomy
Gill areas
Cérebros
Otólitos
Physiology
Body compositions
Nutrients
Oxygen consumptions
Tipo de natação
Swimming speeds
Visual pigment(s)
Sons de peixes
Diseases / Parasites
Toxicities (LC50s)
Genetics
Genética
Electrophoreses
Heritabilities
Human related
Aquaculture systems
Perfis para aquacultura
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Ciguatera cases
Stamps, coins, misc.
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Taxonomy
Nomes comuns
Sinônimos
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References
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Estimates based on models

Índice de diversidade filogenética (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00282 (0.00219 - 0.00363), b=3.18 (3.13 - 3.23), in cm total length, based on LWR estimates for this species (Ref. 93245).
Nível Trófico (Ref. 69278):  3.3   ±0.49 se; based on food items.
Resiliência (Ref. 120179):  Muito baixo(a), tempo mínimo de duplicação da população maior que 14 anos (tm=16-26; tmax=97; K=0.04; Fec=50,000).
Fishing Vulnerability (Ref. 59153):  Very high vulnerability (86 of 100).
Categoria de preço (Ref. 80766):   Unknown.