Sturgeon Aquaculture—Specialized Techniques: Determining the Stage of Sexual Maturity in Female Sturgeon for Artificial Spawning: The Egg Polarization Index or PI

Release Date: 12/5/2019

Reviewed At: 8/12/2025

DOI: 10.32473/edis-fa153-2007

Natural Resources

Abstract

FA-153 describes a simple field and laboratory test used to assist in predicting ovulatory response in female sturgeon, which uses the egg size and position of the nucleus in the cytoplasm as indicators — the principle behind it, materials needed, biopsy procedure, and how to determine the egg polarization index.

About this Publication

This document is FA153, one of a series of the School of Forest, Fisheries, and Geomatics Sciences, Program in Fisheries and Aquatic Sciences, UF/IFAS Extension. Original publication date December 2007. Visit the EDIS website at https://edis.ifas.ufl.edu for the currently supported version of this publication.

How to Cite

Chapman, F. A., & Van Eenennaam, J. P. (2008). Sturgeon Aquaculture - Specialized Techniques Determining the Stage of Sexual Maturity in Female Sturgeon for Artificial Spawning The Egg Polarization Index or PI. EDIS, 2008(3). https://doi.org/10.32473/edis-fa153-2007

Authors

Frank Chapman

associate professor (retired), aquaculture, School of Forest, Fisheries, and Geomatics Sciences, Fisheries and Aquatic Sciences Program

Joel P. Van Eenennaam

staff research associate (retired), aquaculture cooperative extension, UC Davis Department of Animal Science, Davis, CA

Contacts

Roy P. Yanong

Contact

Specialist

University of Florida

professor and Extension veterinarian, School of Forest, Fisheries, and Geomatics Sciences, Fisheries and Aquatic Sciences Program, UF/IFAS Extension Tropical Aquaculture Lab, Ruskin, FL