Cooperative Research Units
Education, Research And Technical Assistance For Managing Our Natural Resources
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Determining Ripeness in White Sturgeon Females to Maximize Yield and Quality of Caviar

Mariah Talbott with otoscope and Columbia River white sturgeon


August 2007 - March 2017


The long-term goal of this study is to improve product quality and increase economic efficiency of caviar production. The specific objectives are: (1) determine the effect of dietary energy on ovarian adiposity and the roe yield in early (7 yr) and late (8 yr) maturing females; (2) determine dietary and farm effects on the physical, chemical, and sensory properties of sturgeon caviar; (3) characterize the effect of genotype on egg yield and ovarian adiposity in early and late maturing females and in early ontogeny of sturgeon (age 3 years); and (4) develop an integrated approach for management of farmed sturgeon with high caviar yield and product quality as outreach for the project.


Current Staff

Federal Staff: 95

Masters Students: 239

Phd Students: 144

Post Docs: 55

University Staff: 239

5 Year Summary

Students graduated: 670

Scientific Publications: 1897

Presentations: 4202



  • Christopher GuyPrincipal Investigator
  • Molly WebbCo-Principal Investigator
  • Mariah TalbottStudent
  • Mariah TalbottStaff

Funding Agencies

  • Western Regional Aquaculture Center, U of Washington


Cooperative Research Units Program Headquarters Cooperators

  1. U.S. Geological Survey