Spike and Wabash Pigtoe Mussels (IMAGE) Michigan State University Caption Michigan's mussel populations are threatened by changing climate and land uses. Michigan State University researchers now have learned that their fish hosts also must be considered when devising conservation strategies. Credit Pete Badra, Michigan State University Usage Restrictions With credit, above 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.