Map (IMAGE) University of Nebraska-Lincoln Caption A map highlighting the northerly and southerly locales on the Missouri River where researchers tracked the age, size and fertility of pallid sturgeon. Credit University of Nebraska-Lincoln Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.