chinook-smolt-gonad-study-mid-columbia-fwco-marjorie-lodwick-usfws.jpg

Photo By/Credit

Marjie Lodwick/USFWS

Date Shot/Created
11/06/2021
Media Usage Rights/License
Public Domain
Image
The gonads of sample juvenile spring Chinook salmon are removed and weighed to estimate the portion of precocious males in the hatchery population.