This study examined the association between self-reported diabetes, fish consumption and serum levels of organochlorines in a First Nation community. One quarter of the 101 participants reported diabetes. Serum PCBs, but not p,p'-DDE, were positively correlated to consumption frequency of total fish, walleye and pike, but not trout. Reported diabetes was positively associated to p,p'-DDE and so...

The eastern Bering Sea and the Barents Sea share a number of common biophysical characteristics. For example, both are seasonally ice-covered, high-latitude, shelf seas, dependent on advection for heat and for replenishment of nutrients on their shelves, and with ecosystems dominated by a single species of gadoid fish. At the same time, they differ in important respects. In the Barents Sea, adv...

Acoustic telemetry systems technology is useful for studying fish movement patterns and habitat use; however, the data generated from omnidirectional acoustic receivers are prone to large observation errors because tagged animal can be anywhere in detection range of receiver. In this study, we used Bayesian state space modeling (SSM) approach different smoothing methods including kernel cross-v...

Lake ecosystems are shifting due to many drivers including climate change and landscape-scale habitat disturbance, diminishing their potential support some fisheries. Walleye Sander vitreus (Mitchill) populations, which recreational tribal fisheries across North America, have declined in lakes. Climate change, harvest, invasive species concurrent increases warm-water fishes (e.g. Centrarchidae)...

Freshwater recreational fisheries regulations are a vital tool for achieving social and ecological objectives. However, angler behavior fish biology may interact to influence regulation efficacy in unexpected ways. We combined models of growth explore how interacts with life history shape the probability harvest given capture across ages, stages, sexes walleye ( Sander vitreus). Compared female...

The invasive rainbow smelt ( Osmerus mordax ) was an abundant food source for Lake Winnipeg walleye Sander vitreus ), especially in the north basin of lake, until smelt’s collapse approximately 2013. We quantified changing length-at-age (? growth rates) and relative mass body condition) caught a gillnet index data set. Here, showed smaller length-at-age, particularly young fish basin, over time...

Ecologically related polymorphisms occur in many northern freshwater fish populations and are distinguished by alternate phenotypes consistently associated with differential use of habitats or resources. We tested for polymorphism in walleye (Sander vitreus (Mitchill, 1818)) in the south basin of Lake Winnipeg, where evidence suggests that ‘‘dwarf’’ and ‘‘normal’’ growth forms may coexist. Morp...