Spawning Interest

The value of electronic tagging and tracking studies for understanding fish–hypoxia interactions
Steven J Cooke and others
Objective Hypoxia (i.e., low dissolved oxygen availability) is a natural phenomenon but can also be induced by human activities (e.g., nutrient enrichment from runoff). Given that dissolved oxygen is essential for aquatic life, periods of hypoxia tend to have negative consequences (e.g., sublethal ...
First successful use of YY males to eradicate invasive Brook Trout populations
Daniel J Schill and others
Objective Eradication of invasive Brook Trout Salvelinus fontinalis from stream ecosystems is often constrained by the inefficiency of electrofishing alone and limitations of piscicide use. The YY male (Trojan Y chromosome) approach has been proposed as a genetic biocontrol tool to assist in ...
Accounting for variable effort among passes, fish size, and spatial heterogeneity in electrofishing depletion estimates
Joshua L McCormick and John W Heckel
Objective The first objective of this study was to develop electrofishing depletion models that allowed effort to vary among passes while accounting for capture probability that varied with fish size. The second objective of this study was to extend the models from estimating abundance at a single ...
Reducing feeding frequency and dietary lipid during hatchery rearing increases adult age at recovery in Chinook Salmon
Deborah L Harstad and others
Objective Age of maturation in Chinook Salmon Oncorhynchus tshawytscha is phenotypically plastic, influenced by both genotype and environmental factors. Salmon hatchery programs often rear fish under accelerated growth regimes using high-lipid diets that can result in younger age at maturity, ...
Counting eggs before they hatch: Comparing metrics of spawning seasonality in Blueback Herring
Eric T Schultz and others
Objective Year-class success is shaped in part by the population’s reproductive phenology—its seasonal timing of spawning. Quantifying phenology may take several approaches representing varying levels of effort, expense, and expertise. The objective of this study was to assess different measures of ...

Latest Articles

Seasonal variation of liver and muscle mercury across two populations of a freshwater sport fish
Sofia C Pereira and others
Objective North-temperate fishes fluctuate in their energy status, metabolic rate, and behavior in response to seasonal changes in temperature and light, which could influence tissue concentrations of biomagnifying contaminants like mercury (Hg). Yet, repeated sampling within a single year is ...
The value of electronic tagging and tracking studies for understanding fish–hypoxia interactions
Steven J Cooke and others
Objective Hypoxia (i.e., low dissolved oxygen availability) is a natural phenomenon but can also be induced by human activities (e.g., nutrient enrichment from runoff). Given that dissolved oxygen is essential for aquatic life, periods of hypoxia tend to have negative consequences (e.g., sublethal ...
Temperature and photoperiod strongly influence the timing of Atlantic Sturgeon volitionally spawning in captivity
James P Henne and others
Objective Understanding how environmental variables influence the timing of spawning is important for the conservation of imperiled fishes like the endangered Atlantic Sturgeon Acipenser oxyrinchus . We observed mature Atlantic Sturgeon volitionally spawning in captivity over a 14-year period to ...
First successful use of YY males to eradicate invasive Brook Trout populations
Daniel J Schill and others
Objective Eradication of invasive Brook Trout Salvelinus fontinalis from stream ecosystems is often constrained by the inefficiency of electrofishing alone and limitations of piscicide use. The YY male (Trojan Y chromosome) approach has been proposed as a genetic biocontrol tool to assist in ...
Correction to: Estimating Northern Pike population dynamics and capture probability by recreational angling using spatial capture–recapture models in a Baltic Sea spawning area
This is a correction to: Konrad Karlsson, Henrik C Andersson, Göran Sundblad, Estimating Northern Pike population dynamics and capture probability by recreational angling using spatial capture–recapture models in a Baltic Sea spawning area, Transactions of the American Fisheries Society , Volume ...
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