Sander vitreus, Walleye : fisheries, aquaculture, gamefish, aquarium

Sander vitreus (Mitchill, 1818)

Walleye
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Sander vitreus
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分類 / Names 共通名の | 類義語 | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

条鰭類 > Perciformes (Perch-likes) > Percidae (Perches) > Luciopercinae
Etymology: vitreus: vitrea meaning glassy, alluding to the nature of the large, silvery eyes (Ref. 1998).  More on author: Mitchill.

Environment: milieu / climate zone / depth range / distribution range 生態学

; 新鮮な水; 汽水性の 底生の; potamodromous (Ref. 51243); 深さの範囲 ? - 27 m (Ref. 11002).   Subtropical; 1°C - 29°C (Ref. 12741); 70°N - 30°N, 137°W - 69°W (Ref. 86798)

分布 国々 | 国連食糧農業機関の区域 | エコシステム | 事件 | Point map | 導入 | Faunafri

North America: St. Lawrence-Great Lakes, Arctic, and Mississippi River basins from Quebec to Northwest Territories in Canada, and south to Alabama and Arkansas in the USA; possibly native to Mobile Bay basin. Widely introduced elsewhere in the USA, including Atlantic and Pacific drainages.

Length at first maturity / サイズ / 重さ / 年齢

Maturity: Lm 42.9, range 36 - 43.18 cm
Max length : 107 cm FL オス/雌雄の選別がない; (Ref. 1998); common length : 54.0 cm TL オス/雌雄の選別がない; (Ref. 12193); 最大公表体重: 11.3 kg (Ref. 4699); 最大記録サイズ: 29 年 (Ref. 12193)

簡単な記述 形態学 | 形態計測学

背面の脊椎 (合計): 13 - 17; 背鰭 (合計): 18-22; 肛門の骨 2; 臀鰭: 11 - 14; 脊つい: 44 - 48. Nuptial tubercles absent. Differentiation of sexes difficult. Branchiostegal rays 7,7 or 7,8 (Ref. 1998).

生物学     用語集 (例 epibenthic)

Occurs in lakes, pools, backwaters, and runs of medium to large rivers. Frequently found in clear water, usually near brush (Ref. 86798). Prefers large, shallow lakes with high turbidity (Ref. 9988, 10294). Rarely found in brackish waters (Ref. 1998). Feeds at night, mainly on insects and fishes (prefers yellow perch and freshwater drum but will take any fish available) but feeds on crayfish, snails, frogs, mudpuppies, and small mammals when fish and insects are scarce (Ref. 1998). Although not widely farmed commercially for consumption, large numbers are hatched and raised for stocking lakes for game fishing (Ref. 9988). Utilized fresh or frozen; eaten pan-fried, broiled, microwaved and baked (Ref. 9988).

Life cycle and mating behavior 成熟 | 繁殖 | 放精 | | 生産力 | 幼生

Spawning occurs in small groups (a larger female and two smaller males or two females and up to six males) that engage in chasing, circular swimming, and fin erection. The group then ascends to shallow water, females roll on their side, and eggs and sperm are released. Deposition of eggs usually occurs in a single night (Ref. 1998). Larvae pelagic (Ref. 7471).

主な参考文献 Upload your references | 参考文献 | コーディネーター | 協力者

Page, L.M. and B.M. Burr, 2011. A field guide to freshwater fishes of North America north of Mexico. Boston : Houghton Mifflin Harcourt, 663p. (Ref. 86798)

IUCNのレッドリストの状況は (Ref. 120744)

  軽度懸念 (LC) ; Date assessed: 01 March 2012

CITES (Ref. 118484)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

人間に対する脅威

  Harmless





Human uses

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
FAO(水産業: 代謝; publication : search) | FishSource |

用具

特記事項

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インターネットの情報源

Estimates based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5312   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00661 (0.00500 - 0.00874), b=3.14 (3.06 - 3.22), in cm Total Length, based on LWR estimates for this species (Ref. 93245).
栄養段階 (Ref. 69278):  4.5   ±0.0 se; Based on diet studies.
Generation time: 3.7 (3.0 - 4.4) years. Estimated as median LN(3)/K based on 53 growth studies.
回復力 (Ref. 120179):  低い, 4.5年~14年の倍増期間の最小個体群 (K=0.05-0.45; tm=2-4; tmax=29; Fec=41,061).
弱み (Ref. 59153):  Moderate vulnerability (40 of 100) .
価格帯 (Ref. 80766):   Unknown.