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Acipenser fulvescens Rafinesque, 1817

Lake sturgeon
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Acipenser fulvescens
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Classification / Names Nomi Comuni | Sinonimi | Catalog of Fishes(Genere, Specie) | 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

; acqua dolce; salmastro demersale; potamodromo (Ref. 51243); distribuzione batimetrica 5 - 9 m (Ref. 117245). Temperate; 60°N - 30°N, 100°W - 71°W

Distribuzione Stati | Aree FAO | Ecosystems | Presenze | Point map | Introduzioni | Faunafri

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

Length at first maturity / Size / Peso / Age

Maturity: Lm 99.7, range 90 - 120 cm
Max length : 274 cm TL maschio/sesso non determinato; (Ref. 5723); common length : 97.5 cm TL maschio/sesso non determinato; (Ref. 12193); peso massimo pubblicato: 125.0 kg (Ref. 3672); Età massima riportata: 152 anni (Ref. 72475)

Short description Chiavi di identificazione | 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     Glossario (es. 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).

Life cycle and mating behavior Maturities | Riproduzione | Spawnings | Egg(s) | Fecundities | Larve

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

Main reference Upload your references | Bibliografia | Coordinatore | Collaboratori

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)

IUCN Red List Status (Ref. 130435)

  Endangered (EN) (A2bcd); Date assessed: 14 September 2019

CITES


Threat to humans

  Harmless





Human uses

Pesca: commerciale; Acquacoltura: sperimentale; Pesce da pesca sportiva: si; Acquario: Acquari pubblici
FAO - pesca: species profile; Publication: search | FishSource |

Informazioni ulteriori

Trophic ecology
Prede
Diet compositions
Food consumptions
Food rations
Predatori
Ecology
Ecologia
Population dynamics
Growths
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversions
Recruitments
Abundances
Life cycle
Riproduzione
Maturities
Fecundities
Spawnings
Spawning aggregations
Egg(s)
Egg developments
Larve
Dinamica popolazioni larvali
Distribution
Stati
Aree FAO
Ecosystems
Presenze
Introduzioni
BRUVS - Videos
Anatomy
Gill areas
Cervelli
Otoliths
Physiology
Body compositions
Nutrients
Oxygen consumptions
Swimming type
Swimming speeds
Visual pigment(s)
Suoni dei Pesci
Diseases / Parasites
Toxicities (LC50s)
Genetics
Genetica
Electrophoreses
Heritabilities
Human related
Aquaculture systems
Profili di acquacoltura
Varietà
Ciguatera cases
Stamps, coins, misc.
Outreach
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Taxonomy
Nomi Comuni
Sinonimi
Morfologia
Morfometria
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References
Bibliografia

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Estimates based on models

Phylogenetic diversity index (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).
Trophic level (Ref. 69278):  3.3   ±0.49 se; based on food items.
Resilienza (Ref. 120179):  Molto basso, tempo minimo di raddoppiamento della popolazione più di 14 anni (tm=16-26; tmax=97; K=0.04; Fec=50,000).
Fishing Vulnerability (Ref. 59153):  Very high vulnerability (86 of 100).
Price category (Ref. 80766):   Unknown.