Prey Utilization and Somatic Growth of Walleye (Sander Vitreus) in the Muskegon River and Muskegon Lake, Michigan

摘要: Walleye Sander vitreus is a far-ranging species that makes long-range movements between spawning and foraging habitats. inhabiting the eastern portion of Lake Michigan watershed move into Muskegon River in spring to spawn. After spawning, some walleye immediately leave River, while may suspend their downstream movement exploit prey availability temperatures optimal for consumption growth. The purpose this study was determine if temperature affect growth, and, therefore, during summer. range growth 18 22C, 2004 system remained nearly one month. During time, ingested large items such as rainbow trout Oncorhynchus mykiss alewife Alosa pseudoharengus Lake. These conditions had positive effect on short-term demonstrated by increase relative weight mean total length length-at-age also increased from 2005, signifying favorable forage resulted over course year. This established strongly related temperature. similarity