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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Classificação / Names Nomes comuns | Sinônimos | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (peixes com raios nas barbatanas) > 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 Ecologia

; Água doce; estuarina demersal; potamódromo (Ref. 51243); intervalo de profundidade ? - 27 m (Ref. 11002).   Subtropical; 1°C - 29°C (Ref. 12741); 70°N - 30°N, 137°W - 69°W (Ref. 86798)

Distribuição Países | Áreas da FAO | Ecossistemas | Ocorrências | Point map | Introduções | 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.

Comprimento de primeira maturação / Tamanho / Peso / Idade

Maturity: Lm 42.9, range 36 - 43.18 cm
Max length : 107 cm FL macho/indeterminado; (Ref. 1998); common length : 54.0 cm TL macho/indeterminado; (Ref. 12193); peso máx. publicado: 11.3 kg (Ref. 4699); idade máx. registrada: 29 anos (Ref. 12193)

Descrição suscinta Morfologia | Morfometria

Espinhos dorsais (total): 13 - 17; Raios dorsais (total): 18-22; Espinhos anais 2; Raios anais : 11 - 14; Vértebras: 44 - 48. Nuptial tubercles absent. Differentiation of sexes difficult. Branchiostegal rays 7,7 or 7,8 (Ref. 1998).

Biologia     Glossário (p.ex. 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).

Ciclo de vida ou comportamento de acasalamento Maturidade | Reprodução | Desova | Ovos | Fecundidade | Larvas

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).

Referência principal Upload your references | Referências | Coordenador | Colaboradores

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)

Status na Lista Vermelha da UICN (Ref. 120744)

  Segura ou pouco preocupante (LC) ; Date assessed: 01 March 2012

CITES (Ref. 118484)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Ameaça para os humanos

  Harmless





Uso pelos humanos

Pescarias: espécies comerciais; Aquacultura: experimental; peixe esportivo: sim; Aquário: Aquários públicos
FAO(pescarias: produção; publication : search) | FishSource |

Mais informação

Referências
Aquacultura
Perfil para aquacultura
Estirpes
Genética
Frequências alélicas
Hereditariedade
Doenças
Processamento
Conversão de massa
Colaboradores
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Sons
Ciguatera
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Fontes da internet

Estimates based on models

Índice de diversidade filogenética (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).
Nível Trófico (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.
Resiliência (Ref. 120179):  Baixo, tempo mínimo de duplicação da população 4,5 - 14 anos (K=0.05-0.45; tm=2-4; tmax=29; Fec=41,061).
Vulnerabilidade (Ref. 59153):  Moderate vulnerability (40 of 100) .
Categoria de preço (Ref. 80766):   Unknown.