Truite fardée versant de l'ouest évaluation et rapport de situation du COSEPAC : chapitre 13
Tableau 4
Bassin hydrographique |
Sous-bassin | Population | N | TFVO | TAC | TFY | HYB | % Hybrides |
---|---|---|---|---|---|---|---|---|
Rivière Saskatchewan Sud | ||||||||
Bow | Bow | Boom | 16 | 11 | 0 | 0 | 5 | 31,3 |
Helen | 5 | 5 | 0 | 0 | 0 | 0 | ||
Moraine | 5 | 1 | 0 | 0 | 4 | 80,0 | ||
Mosquito | 14 | 13 | 0 | 0 | 1 | 7,1 | ||
Affluent du ruis. Jumpingpound | 15 | 15 | 0 | 0 | 0 | 0,0 | ||
Elbow | Quirk | 23 | 23 | 0 | 0 | 0 | 0,0 | |
Affluent du ruis. Canyon | 12 | 12 | 0 | 0 | 0 | 0,0 | ||
Silvester | 22 | 22 | 0 | 0 | 0 | 0,0 | ||
Ghost | Johnson | 15 | 14 | 0 | 0 | 1 | 6,7 | |
Spray | Commonwealth | 1 | 1 | 0 | 0 | 0 | 0,0 | |
Hogarth | 20 | 12 | 0 | 0 | 8 | 40,0 | ||
Smuts | 26 | 19 | 0 | 0 | 7 | 26,9 | ||
Watridge | 32 | 32 | 0 | 0 | 0 | 0,0 | ||
Margaret | 15 | 15 | 0 | 0 | 0 | 0,0 | ||
Waiparous | 11 | 11 | 0 | 0 | 0 | 0,0 | ||
Highwood | Highwood | 7 | 4 | 1 | 0 | 2 | 28,6 | |
Cutthroat | 18 | 18 | 0 | 0 | 0 | 0,0 | ||
Etherington | 4 | 2 | 0 | 0 | 2 | 50,0 | ||
Head | 2 | 2 | 0 | 0 | 0 | 0,0 | ||
Pekisko | 19 | 2 | 15 | 0 | 2 | 10,5 | ||
Sullivan | 19 | 11 | 1 | 0 | 7 | 36,8 | ||
Kananaskis | Boulton | 1 | 1 | 0 | 0 | 0 | 0,0 | |
Elpoca | 1 | 1 | 0 | 0 | 0 | 0,0 | ||
Evan-Thomas | 55 | 55 | 0 | 0 | 0 | 0,0 | ||
Muskeg | 14 | 1 | 13 | 0 | 0 | 0,0 | ||
Pocaterra | 3 | 3 | 0 | 0 | 0 | 0,0 | ||
Porcupine | 14 | 14 | 0 | 0 | 0 | 0,0 | ||
Rocky | 23 | 23 | 0 | 0 | 0 | 0,0 | ||
Spotted Wolf | 11 | 3 | 1 | 0 | 7 | 63,6 | ||
Sheep | Coal | 23 | 0* | 17 | 0 | 6 | 26,1 | |
Fisher | 20 | 11 | 0 | 0 | 9 | 45,0 | ||
Gorge | 21 | 19 | 0 | 0 | 2 | 9,5 | ||
Ware | 19 | 5 | 2 | 0 | 12 | 63,2 | ||
St. Mary | St. Mary | Lee | 9 | 0* | 7 | 0 | 2 | 22,2 |
Oldman | Oldman | Racehorse n. | 15 | 14 | 0 | 0 | 1 | 6,7 |
Oldman | Oldman | Bob | 9 | 0* | 8 | 0 | 1 | 11,1 |
Camp | 20 | 14 | 0 | 0 | 6 | 30,0 | ||
Dutch | 14 | 14 | 0 | 0 | 0 | 0,0 | ||
Oyster | 17 | 17 | 0 | 0 | 0 | 0,0 | ||
Vicary | 20 | 20 | 0 | 0 | 0 | 0,0 | ||
Timber n. | 20 | 1 | 12 | 0 | 7 | 35,0 | ||
Westrup | 12 | 11 | 0 | 0 | 1 | 8,3 | ||
Livingstone | Twin nord | 19 | 19 | 0 | 0 | 0 | 0,0 | |
Savannah | 2 | 1 | 0 | 0 | 1 | 50,0 | ||
Affluent de la Livingstone | 19 | 18 | 0 | 0 | 1 | 5,3 | ||
Castle | Beaver Mines | 23 | 0* | 17 | 0 | 6 | 26,1 | |
Gladstone | 15 | 4 | 2 | 0 | 9 | 60,0 | ||
Grizzly | 2 | 1 | 0 | 0 | 1 | 50,0 | ||
Lynx/Castle | 15 | 15 | 0 | 0 | 0 | 0,0 | ||
Suicide | 6 | 1 | 0 | 0 | 5 | 83,3 | ||
Crowsnest | Allison | 4 | 2 | 0 | 0 | 2 | 50,0 | |
Blairmore | 20 | 20 | 0 | 0 | 0 | 0,0 | ||
Gold | 15 | 15 | 0 | 0 | 0 | 0,0 | ||
Waterton | Dungarvan | 10 | 9 | 0 | 0 | 1 | 10,0 | |
Ces populations ont probablement disparu. En présence de truites arc-en-ciel, la disparition des truites fardées versant de l’ouest n’est qu’une question de temps (Stelfox, comm. pers., 2006) Nombre total de populations = 55, dont 29 (53 %) présentent un taux d’hybridation de > 1 % (taux moyen d’hybridation = 32,4 %). |
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