Abstract Brook trout are a species of conservation concern in Southwestern Ontario, Canada, and effective monitoring their populations is crucial for making informed management decisions. Electrofishing traditional, yet invasive, method that allows fish abundance estimation. Environmental DNA (eDNA) an emerging molecular tool presents non-invasive alternative to electrofishing. This study was c...

The determination of endangered species is problematic. If one considers a to be ontological individuals, then if goes extinct, it gone forever. Brook Trout used as an example “species” which may comprised several unique entities that warrant specific status. In addition determining the status, difficult determine how place monetary value on do not have general appeal public (e.g., many bird sp...

1. The differentiation of myotomal muscles in the brook trout (Salvelinus fontinalis Mitchill) has been investigated using p-phenylene diamine stained semi-thin sections and cytochemical and quantitative determinations of enzyme activities. 2. Evidence is presented that the range of fibre size in white muscle represents stages in growth rather than distinct fibre types. 3. Electromyography show...

Land acquisition along the stream for angler access, streambank protection and habitat improvement began in the early 1960s. In 1985, a master plan for the stream was approved and these lands were consolidated into the Duncan Creek Fishery Area. The fishery area covers Duncan Creek from its headwaters downstream to 190 Avenue, immediately above Lake Como. Approximately 7.8 miles of the stream t...

Lower effective sizes (N(e)) than census sizes (N) are routinely documented in natural populations, but knowledge of how multiple factors interact to lower N(e)/N ratios is often limited. We show how combined habitat and life-history influences drive a 2.4- to 6.1-fold difference in N(e)/N ratios between two pristine brook trout (Salvelinus fontinalis) populations occupying streams separated by...