Monday, July 30, 2012
Mark Selective Fisheries are an Essential Tool for Conservation
A neat write up in the most recent issue of the Columbia Basin Bulletin summarizes a recent publication on mark selective fisheries with a particular focus on the differences in hatchery management between California, Oregon and Washington. Unlike Oregon and Washington, the vast majority of hatchery chinook that are released in California are not marked with an adipose fin clip. While there are significant commercial and sport fisheries for Chinook in California, an inability to distinguish between hatchery and wild fish remains a challenge in managing harvest and limiting impacts on wild populations. More than 35 million juvenile hatchery Chinook are released each year in the Sacramento River system, and hatchery fish make up almost 90% of returning adults.
More information in the Columbia Basin Bulletin: