分類 / Names
共通名の | 類義語 | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
(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
; 新鮮な水; 汽水性の 底生の; potamodromous (Ref. 51243); 深さの範囲 5 - 9 m (Ref. 117245). Temperate; 60°N - 30°N, 100°W - 71°W
North America: St. Lawrence-Great Lakes, Hudson Bay, and Mississippi River basins. CMS Appendix II).
Length at first maturity / サイズ / 重さ / 年齢
Maturity: Lm 97.0, range 90 - 120 cm
Max length : 274 cm TL オス/雌雄の選別がない; (Ref. 5723); common length : 97.5 cm TL オス/雌雄の選別がない; (Ref. 12193); 最大公表体重: 125.0 kg (Ref. 3672); 最大記録サイズ: 152 年 (Ref. 72475)
形態学 | 形態計測学
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). Smoked and in 1951, Canada, 2,000 lbs. of caviar were made from the eggs (Ref. 37032). Threatened due to over harvesting, habitat loss and pollution (Ref. 58490).
Life cycle and mating behavior
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Spawning sites are rocky and boulder filled areas along the outside bend of rivers (Ref. 41542).
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)
水産業: 商業; 水産養殖: 実験の; ゲームフィッシュ: はい; 水族館・水槽: 公共の水族館
協力者画像Stamps, Coins Misc.音シガテラ（食中毒の名前）速度泳ぐ 型式カマOtoliths脳視覚
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00275 (0.00213 - 0.00356), b=3.18 (3.12 - 3.24), in cm total length, based on LWR estimates for this species (Ref. 93245
栄養段階 (Ref. 69278
): 3.3 ±0.49 se; based on food items.
Generation time: 49.9 ( na - na) years. Estimated as median ln(3)/K based on 2 growth studies.
回復力 (Ref. 120179
): 非常に低い, １４年以上の倍増期間の最小個体群 (tm=16-26; tmax=97; K=0.04; Fec=50,000).
弱み (Ref. 59153
): Very high vulnerability (89 of 100) .