Acipenser fulvescens, Lake sturgeon : fisheries, aquaculture, gamefish, aquarium

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Verwante soorten
- Soort(en) in
  Acipenser
- Soort(en) in
  Acipenseridae
- - Classificatie -
- Acipenserinae
- Acipenseridae
- Acipenseriformes
- Chondrostei
- Chordata
- Animalia

Acipenser fulvescens Rafinesque, 1817

Lake sturgeon

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Acipenser fulvescens
Picture by The Native Fish Conservancy

Classificatie / Names Lokale namen | Synoniemen | Catalog of Fishes(Genus, Soort(en)) | ITIS | CoL | WoRMS | Cloffa

> Acipenseriformes (Sturgeons and paddlefishes) > Acipenseridae (Sturgeons) > Acipenserinae
Etymology: Acipenser: Latin, acipenser = sturgeon, 1853 (Ref. 45335).
More on author: Rafinesque.

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

; zoet water; brak water demersaal; potamodroom (Ref. 51243); diepte 5 - 9 m (Ref. 117245). Temperate; 60°N - 30°N, 100°W - 71°W

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

Lengte bij maturiteit / Grootte / Gewicht / Leeftijd

Maturity: L_m 99.7, range 90 - 120 cm
Max length : 274 cm TL mannelijk / geslacht onbekend; (Ref. 5723); common length : 97.5 cm TL mannelijk / geslacht onbekend; (Ref. 12193); max. gepubliceerd gewicht: 125.0 kg (Ref. 3672); max. gerapporteerde leeftijd: 152 Jaren (Ref. 72475)

Korte beschrijving Determinatiesleutels | Morfologie | Morfometrie

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).

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).

Levenscyclus en paargedrag Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven

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

Hoofdreferentie Upload your references | Referenties | Coördinator | Medewerkers

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 op de Rode Lijst van het IUCN (Ref. 130435: Version 2024-2)

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

CITES

Appendix II: International trade monitored

CMS (Ref. 116361)

Appendix II: Migratory species conserved through agreements

Gevaar voor de mens

Harmless

Gebruik door de mens

Visserij: commercieel; Aquacultuur: experimenteel; sportvis: ja; Aquarium: Publieke aquaria

FAO - visserij: soortsprofiel; Publication: search | FishSource |

Meer informatie

Trophic ecology
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Estimates based on models

Fylogenetische diversiteitsindex (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00263 (0.00205 - 0.00337), b=3.19 (3.14 - 3.24), in cm total length, based on LWR estimates for this species (Ref. 93245).

Trofisch niveau (Ref. 69278): 3.3 ±0.49 se; based on food items.

Weerstandsvermogen (Ref. 120179): Zeer laag, minimale populatieverdubbelingstijd meer dan 14 jaar (tm=16-26; tmax=152; K=0.04; Fec=50,000).

Fishing Vulnerability (Ref. 59153): Very high vulnerability (86 of 100).

Prijsklasse (Ref. 80766): Unknown.

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