Ambiente: milieu / zona climatica / distribuzione batimetrica / gamma di distribuzione
Ecologia
; acqua dolce; salmastro benthopelagico; potamodromo (Ref. 126106); distribuzione batimetrica 0 - 27 m (Ref. 11002). Subtropical; 1°C - 29°C (Ref. 12741); 70°N - 30°N, 137°W - 69°W (Ref. 86798)
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.
Lunghezza alla prima maturità / Dimensione / Peso / Età
Maturità: 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)
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).
Body shape (shape guide): elongated; Cross section: compressed.
Adults occur in lakes, pools, backwaters, and runs of medium to large rivers. Frequently found in clear water, usually near brush (Ref. 86798). They prefer large, shallow lakes with high turbidity (Ref. 9988, 10294). Rarely found in brackish waters (Ref. 1998). They feed at night, mainly on insects and fishes (with preference for yellow perch and freshwater drum but will take any fish available) also feed 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).
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).
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)
Stato della Lista Rossa IUCN (Ref. 130435: Version 2025-2 (Global))
Minaccia per l'uomo
Harmless
Usi umani
Pesca: commerciale; Acquacoltura: sperimentale; Pesce da pesca sportiva: si; Acquario: Acquari pubblici
Strumenti
Rapporti speciali
Scarica XML
Fonti Internet
Stime basate su modelli
Indice di diversità filogenetica (Fonte Biblio. 82804) |
PD50 = 0.5312 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00631 (0.00483 - 0.00825), b=3.15 (3.07 - 3.23), in cm total length, based on LWR estimates for this species (Ref. 93245). |
Livello trofico (Fonte Biblio. 69278) |
4.5 ±0.0 se; based on diet studies. |
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Generation time |
3.7 (3.0 - 3.8) years. Estimated as median ln(3)/K based on 42 growth studies. |
Resilienza (Fonte Biblio. 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). |
Vulnerabilità della pesca (Ref. 59153) |
Moderate to high vulnerability (45 of 100). 🛈 |
Categoria di prezzo (Ref. 80766) |
Unknown.
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Nutrienti (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. |