Cooperative Research Units
Education, Research And Technical Assistance For Managing Our Natural Resources
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Demographic status and population genetic differentiation of Candy Darter populations in Virginia


July 2016 - December 2019


(1) Document spatiotemporal shifts in occupancy and suitability of riffles in Stony Creek and Cripple Creek.
(2) Monitor populations to estimate relative population size for use in demographic projections and assessment of population viability.
(3) Estimate life-history attributes such as fecundity, age-specific survival, annual recruitment, and age structure.
(4) Analyze molecular and life-history data to define demographic and evolutionarily significant units for the species and to estimate genetic diversity and effective population size.


Current Staff

Federal Staff: 100

Masters Students: 237

Phd Students: 155

Post Docs: 56

University Staff: 246

5 Year Summary

Students graduated: 714

Scientific Publications: 1979

Presentations: 4410



Funding Agencies

  • Virginia Department of Game and Inland Fisheries


Cooperative Research Units Program Headquarters Cooperators

  1. U.S. Geological Survey