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

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Sander vitreus (Mitchill, 1818)

Walleye
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Sander vitreus
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Classification / Names Nomi Comuni | Sinonimi | Catalog of Fishes(Genere, Specie) | ITIS | CoL | WoRMS | Cloffa

> Perciformes/Percoidei (Perchs) > 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 Ecologia

; acqua dolce; salmastro benthopelagico; potamodromo (Ref. 51243); distribuzione batimetrica 0 - 27 m (Ref. 11002). Subtropical; 1°C - 29°C (Ref. 12741); 70°N - 30°N, 137°W - 69°W (Ref. 86798)

Distribuzione Stati | Aree FAO | Ecosystems | Presenze | Point map | Introduzioni | 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 / Size / Peso / Age

Maturity: Lm 42.5, range 36 - 44.8 cm
Max length : 107 cm FL maschio/sesso non determinato; (Ref. 1998); common length : 54.0 cm TL maschio/sesso non determinato; (Ref. 12193); peso massimo pubblicato: 11.3 kg (Ref. 4699); Età massima riportata: 29 anni (Ref. 12193)

Short description Morfologia | Morfometria

Spine dorsali (totale): 13 - 17; Raggi dorsali molli (totale): 18-22; Spine anali 2; Raggi anali molli: 11 - 14; Vertebre: 44 - 48. Nuptial tubercles absent. Differentiation of sexes difficult. Branchiostegal rays 7,7 or 7,8 (Ref. 1998).

Biologia     Glossario (es. 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 Maturità | Riproduzione | Deposizione | Uova | Fecundity | Larve

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).

Main reference Upload your references | Bibliografia | Coordinatore | Collaboratori

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 Red List Status (Ref. 130435)

  Least Concern (LC) ; Date assessed: 01 March 2012

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

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

Informazioni ulteriori

Bibliografia
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Profilo di acquacoltura
Varietà
Genetica
Electrophoreses
Ereditarietà
Malattie
Elaborazione
Nutrients
Mass conversion
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Area branchiale
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Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5312   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00631 (0.00480 - 0.00830), b=3.15 (3.07 - 3.23), in cm total length, based on LWR estimates for this species (Ref. 93245).
Trophic level (Ref. 69278):  4.5   ±0.0 se; based on diet studies.
Generation time: 3.7 (3.0 - 4.2) years. Estimated as median ln(3)/K based on 41 growth studies.
Resilienza (Ref. 120179):  Basso, tempo minimo di raddoppiamento della popolazione 4.5 - 14 anni (K=0.05-0.45; tm=2-4; tmax=29; Fec=41,061).
Fishing Vulnerability (Ref. 59153):  Moderate to high vulnerability (45 of 100).
Price category (Ref. 80766):   Unknown.
Nutrients (Ref. 124155):  Calcium = 83.9 [34.8, 196.2] mg/100g; Iron = 0.483 [0.192, 1.201] mg/100g; Protein = 18.1 [16.9, 19.3] %; Omega3 = 0.17 [0.07, 0.35] g/100g; Selenium = 7.44 [1.82, 31.88] μg/100g; VitaminA = 18.6 [6.9, 51.0] μg/100g; Zinc = 0.913 [0.526, 1.539] mg/100g (wet weight); based on nutrient studies.