Routine and post-exercise metabolic rates were measured for juvenile rainbow trout Oncorhynchus mykiss and brook trout Salvelinus fontinalis infected with the microsporidium gill parasite Loma salmonae under laboratory conditions. Rainbow trout increased routine and post-exercise metabolic rate in response to infection compared with controls. Brook trout, on the other hand, lowered routine meta...

Next generation sequencing techniques have revolutionized the collection of genome and transcriptome data from nonmodel organisms. This manuscript details the application of restriction site-associated DNA sequencing (RADseq) to generate a marker-dense genetic map for Brook Trout (Salvelinus fontinalis). The consensus map was constructed from three full-sib families totaling 176 F1 individuals....

Specimens of two species lernaeopodid copepods, Salmincola edwardsii (Olsson, 1869) and markewitschi Shedko Shedko, 2002, were collected from chars (Salvelinus spp.) reared in exhibition tanks the Sapporo Salmon Museum, Hokkaido, Japan. Descriptions these copepods are provided using specimens. In 1988, adult females S. found on gills southern Asian Dolly Varden, Salvelinus malma krascheninnikov...

Recently, there has been an increase in studies focusing on an emerging class of organic contaminants, hydroxylated PCBs (OH-PCBs) and chlorinated phenolic compounds (CPCs) in the environment, particularly in northern regions of Europe and Canada. Since information for fish from the Great Lakes are scarce, we determined the blood plasma concentrations of OH-PCB congeners, pentachlorophenol (PCP...

A median mortality of 120 ± 30 days occurred among juvenile Atlantic salmon (Salmo salar), fed dry fish food containing 2.7, 5.7, 2.8, and 9.1 uMg/g wet weight of 2,8di-, tri-, tetra-, and octachlorodibenzofuran, respectively (1). Only octachlorodibenzofuranx was detected in the dead fish, and the level was 0.03 ug/g in the muscle and 0.21 ,Ag/g in the gut (both values on wet weight basis). The...

At temperate and boreal latitudes, seasonal transitions drive large fluxes in resource availability. For both terrestrial aquatic predators, pulses have the capacity to shape physiological ecological strategies. However, our ability detect seasonally dynamic trophic interactions is limited by logistical difficulty of year-round monitoring. Here, we document a novel, pulse freshwater predator ac...

Bluegill Lepomis macrochirus Maturation at younger age and lower condition (lakes in Minnesota: Drake et al., 1997; source: Istockphoto). Atlantic silverside Menidia menidia Reduced growth rate; decrease in fecundity, egg volume, larval size at hatching, larval growth rate, larval survival, consumption, growth efficiency, food conversion efficiency, willingness to forage under threat of predati...