Abstract The timing of entry into freshwater by mature anadromous fishes is an important component their migration phenology. In iteroparous species, identifying the cues that influence freshwater, and annual variability in these timings, assessing extent individual repeatability. Here, passive acoustic telemetry tracked 71 twaite shad Alosa fallax (‘shad’) returning to River Severn’s upper est...

Research objective was to identify the specific features of distribution microelements (zink, manganese, lead, cadmium) in organs and tissues black-backed shad Alosa kessleri (Grimm, 1887) Dolginsky herring braschnikowii (Borodin, 1904) caught Caspian Sea. Accumulated fish concentrations exceeding maximum permissible limits, heavy metals pose a danger human health. Sampling carried out by stand...

Stable isotope analyses offer a useful means for quantifying ecological niche dimensions, though few studies have examined isotopic response of an community with respect to resource gradients such as fluctuations in prey availability. carbon and nitrogen isotopes were measured Lake Michigan salmonines their collected from 2014 2016. Bayesian ellipse mixing model used quantify characteristics di...

Abstract The anadromous alewife is a commercially fished clupeid in Atlantic Canada, whose oceanic migration poorly understood. Migration of alewives presently investigated from the lower reaches Gaspereau River into Minas Basin, Bay Fundy. Seventy-five post-spawning adults were tagged on their downstream migration; within two days being tagged, most had left and 57 entered Southern Bight Basin...