We sampled three limnetic fish species: juvenile sockeye salmon (Oncorhynchus nerka), three-spine stickleback (Gasterosteus aculeatus) and longfin smelt (Spirinchus thaleichthys) in Lake Washington to quantify species-specific patterns of diel vertical migration (DVM). Catch-per-unit-effort data analysed from 15 years of midwater trawling documented seasonal and diel differences in vertical dis...

Anadromous European smelt ( Osmerus eperlanus ) is a keystone species in lake and river ecosystems. In the past present, stock declines several of its habitats have been reported. The reasons for this are unclear. Experimental research on early life stages could help to reveal potential causes. For purpose, knowledge artificial propagation rearing needed. Following from previous work, we show h...

Of eight main selected coastal fish species; Baltic sprat, herring, smelt, eelpout, four-horn sculpin, perch, flounder and turbot, five; herring, smelt, eelpout, four-horn sculpin, flounder, seem most suitable for heavy metal monitoring in coastal waters in the Norhern Baltic Sea. In general low concentrations of Hg and Cd were measured from the edible parts (muscle tissue) of the fishes. Preda...

The purpose of the work is to substantiate method determining collagen in food products. paper substantiates ratio sample mass and distilled water during removal gluten, temperature duration tested developed for by assessing content samples small-mouthed sea smelt.
 Theoretical, physico-chemical, spectrometric mathematical research methods were used work.

Total mercury levels in aquatic birds and fish communities have been monitored across the Canadian Great Lakes by Environment and Climate Change Canada (ECCC) for the past 42 years (1974-2015). These data (22 sites) were used to examine spatio-temporal variability of mercury levels in herring gull (Larus argentatus) eggs, lake trout (Salvelinus namaycush), walleye (Sander vitreus), and rainbow ...

Forage fish are schooling species commonly occurring in both offshore pelagic and nearshore coastal habitats. Beyond use by some for spawning, the dynamics of habitat not well understood. The objective our study was to evaluate spring–summer forage occurrence habitats Strait Juan de Fuca, Washington. We suspected that changes resulting from removal two large dams on Elwha River (2009–2011) may ...