Life history characteristics of Carp Lake rainbow trout were investigated through reading and back-calculation of adult and juvenile scales. Trout enter Carp Lake as age 1 and age 2 migrants. A critical minimum size for lake survival appeared to be from 60-70 mm while optimum size for lake survival was 80-90mm. Back-calculated mean lengths of yearling and two-year-old migrants was 80.8 and 98.4 mm, respectively, two-year old migrants averaged 59.5 mm at the end of their first year in lake tributaries. Angler caught trout in Carp Lake ranged from 234 to 440 mm and averaged 343 mm for the three years of creel data. Total age ranged from 2+ to 6+ but 4+ was most common (48%). Repeat spawners averaged 40% in anglers' catch for the three years of data suggesting the lake fishery could have a major impact on the number of large trout surviving to spawn more than once. Concern is expressed about the contribution of repeat spawners to eventual lake recruitment and the possible need to maintain stock genetic integrity
Wightman, J.C.. 1982. Life History Characteristics of Carp Lake Rainbow Trout Based on Scale Analysis. Ministry of Environment. Fisheries Report. FRN209
Topic: Fish and Fish Habitats
Keywords: rainbow trout, Carp Lake, survival, sport, fishery, recruitment, management
Scientific Name: Oncorhynchus mykiss
English Name: Rainbow Trout
To copy the URL of a document, Right Click on the document title, select "Copy Shortcut/Copy Link", then paste as needed. Only documents available to the public have this feature enabled.