The fishing and natural mortality of large , 1 piscivorous Bull Trout and Rainbow Trout 2 in Kootenay Lake , British Columbia 3 ( 2008 - 2013 )
نویسندگان
چکیده
8 Background. Estimates of fishing and natural mortality are important for understanding, and ultimately managing, commercial and recreational fisheries. High reward tags with fixed station acoustic telemetry provides a promising approach to monitoring mortality rates in large lake recreational fisheries. Kootenay Lake is a large lake which supports an important recreational fishery for large Bull Trout and Rainbow Trout. 9
منابع مشابه
The fishing and natural mortality of large, piscivorous Bull Trout and Rainbow Trout in Kootenay Lake, British Columbia (2008–2013)
BACKGROUND Estimates of fishing and natural mortality are important for understanding, and ultimately managing, commercial and recreational fisheries. High reward tags with fixed station acoustic telemetry provides a promising approach to monitoring mortality rates in large lake recreational fisheries. Kootenay Lake is a large lake which supports an important recreational fishery for large Bull...
متن کاملHybrid zone structure and the potential role of selection in hybridizing populations of native westslope cutthroat trout (Oncorhynchus clarki lewisi) and introduced rainbow trout (O. mykiss).
Introgressive hybridization is a common feature of many zones of contact between divergent lineages of fishes. This is particularly common when taxa that are normally allopatric come into artificial (human-induced) secondary contact. We examined 18 native populations of westslope cutthroat trout (Oncorhynchus clarki lewisi, WCT) to determine the extent of introgressive hybridization with introd...
متن کاملAn analysis of spatial and environmental factors influencing hybridization between native westslope cutthroat trout (Oncorhynchus clarkii lewisi) and introduced rainbow trout (O. mykiss) in the upper Kootenay River drainage, British Columbia
Westslope cutthroat trout (Oncorhynchus clarki lewisi, WCT) and introduced rainbow trout (O. mykiss, RBT) readily hybridize and introgression has occurred in many drainages across the historic native range of WCT. In British Columbia (Canada), the upper Kootenay River drainage is the heart of the WCT distribution and is thought to harbour native gene pools, but many population are thought to be...
متن کاملChanges in selection and evolutionary responses in migratory brown trout following the construction of a fish ladder
Brown trout (Salmo trutta) are extensively harvested and its habitat highly influenced by human encroachments. Using a 40-year time series of mark-recapture data we estimate vital rates for a piscivorous trout population. This population spawns upstream of a waterfall, which historically acted as a migration barrier for smaller trout. In 1966, the waterfall was dammed and a fish ladder construc...
متن کاملGenetic Comparison of Naturalized Rainbow Trout Populations among Lake Superior Tributaries :
--Allelic frequencies at 27 polymorphic allozyme loci were compared among 15 collections of naturalized migratory rainbow trout Salmo gairdneri sampled from 10 stream drainages leading to Lake Superior. Multiple collections were made within the Brule River drainage in Wisconsin: one of spring-run spawning adults, one of fall-run adults, and four from Brule River tributaries. Significant allele ...
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تاریخ انتشار 2016