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The Tale of the Migrating Mini-Jack

Physiologists Don Larsen and his colleagues are studying the physiology of the “mini-jack” to determine how hatcheries might be contributing to high rates of early maturation in male salmon.
November 09, 2009 - Feature Story ,
West Coast
Diagram showing the life cycle of Spring Chinook salmon. From fry, to parr, smoting, sub-adult, to jack, spawning. Credit: NOAA Fisheries

Killer Whales' Fate Linked to Salmon

NWFSC scientists Eric Ward and Elizabeth Holmes, along with Ken Balcomb of the Center for Whale Research, have found a correlation between the abundance of Chinook salmon and the fecundity (reproductive success) of killer whales.
June 30, 2009 - Feature Story ,
West Coast
Killer whale spyhopping.

Overdose: Drugs and Chemicals in Fish

On June 19th, NWFSC Environmental Conservation Division Director Dr. Tracy Collier gave testimony before the Committee on Natural Resources in the U.S. House of Representatives, addressing the adverse effects of endocrine disrupting chemicals (EDCs) on the endocrine systems of fish and wildlife.
June 24, 2009 - Feature Story ,
West Coast

Pesticide Mixtures: Deadly Synergy in Salmon

Poisoned waters a toxic brew for salmon
March 04, 2009 - Feature Story ,
West Coast
This graph shows the hypothetical difference between the effects of an individual pesticide and pesticide mixtures on salmon brain function, as indicated by the degree to which the pesticide(s) inhibit function of an important enzyme acetylcholinesterase (AChE). As seen here, the potential neurobehavioral toxicity of the pesticide mixture can be additive or, if greater than the sum of its parts, synergistic.

Success at Redfish Lake

A brief look back at how captive breeding rescued a sockeye population
December 10, 2008 - Feature Story ,
West Coast
Hormone injections are used to advance the spawning time of sockeye. Credit: NOAA Fisheries