Ovarian fluid influences sperm performance in lake trout, Salvelinus namaycush.

Ovarian fluid enhances sperm velocity based on relatedness in lake trout, Salvelinus namaycush.

Studying mate choice at the gamete level can provide valuable insights into proximate mechanisms that underlie the evolution of mating systems. The objective was to assess whether ovarian fluid enhances sperm performance based on relatedness of mates in lake trout, Salvelinus namaycush, an iteroparous salmonid. Twelve trios were used, each composed of a female and two male fish; one male was re...

Genetic Research on Brook Trout and Lake Trout in Algonquin Park

Advances in genetic technology over the past two decades have provided a variety of molecular genetic marker systems that are enabling new insights into the historical and contemporary processes that influence fish biology. Genetic research on brook trout (Salvelinus fontinalis) and lake trout (Salvelinus namaycush) in Algonquin Park is allowing us to examine issues ranging from the phylogeogra...

Foraging mechanisms of siscowet lake trout (Salvelinus namaycush siscowet) on pelagic prey

Dynamics of Individual Growth in a Recovering Population of Lake Trout (Salvelinus namaycush)

In 1976 the Wisconsin Department of Natural Resources established a refuge for a nearly depleted population of lake trout (Salvelinus namaycush) at Gull Island Shoal, Lake Superior. The refuge was intended to reduce fishing mortality by protecting adult lake trout. We examined the growth dynamics of these lake trout during the period of recovery by comparing estimates of individual growth befor...

Twelve microsatellite loci for lake trout (Salvelinus namaycush).

We describe 12 microsatellite loci isolated from lake trout (Salvelinus namaycush). The number of alleles at these loci ranged from two to 11 with an average of 5.3 alleles per locus. The expected heterozygosity ranged from 0.29 to 0.76, with an average of 0.68. Accidental (or illegal) introductions of lake trout into watersheds are decimating native trout populations in the northern Rocky Moun...