Fishery managers in the Lake Michigan basin have new information about the journeys and survival of wild and hatchery-raised steelhead salmon (Oncorhynchus mykiss). Managing the fish effectively requires understanding the proportion of fish coming from hatcheries or the wild, generally, and from which hatchery and which river tributary, specifically.
For over a decade, the Great Lakes Fishery Trust has supported Lake Superior State University’s (LSSU’s) vision to expand its capacity of its former Aquatic Research Lab by constructing a new facility at the nexus of the upper Great Lakes.
A critical knowledge gap in efforts to conserve and restore cisco has been cisco taxonomy. New research using genomic tools to clarify cisco population structure and taxonomy is yielding exciting information that challenges the current understanding of the Great Lakes cisco family tree.
For years, the Chinook collected valuable data on the Great Lakes fishery, such as the impact of sea lampreys and the effectiveness of stocking programs. Its replacement, named after Dr. Howard Tanner, was funded in part by a grant from the GLFT.
Thanks to a recent GLFT project, fisheries managers now have two computer models, developed by a team of researchers who wondered if they could find a better way to determine relative recruitments of spawning populations in a mixed environment.
In order to understand Thiamine Deficiency Complex—which contributes to premature death in lake trout—researchers looked into whether certain fish genes produce thiaminase de novo, or at a cellular level.
In 2014, the GLFT convened an aquatic connectivity workshop to identify the types of decision-support tools that resource managers and regulators need and would use to guide decisions on where to improve fish passage or remove dams in the Great Lakes basin.
The GLFT funded a research project to (1) better understand the state’s more naturalized Chinook salmon population, (2) assess potential differences between naturalized and hatchery-stocked fish, and (3) use the results to inform decisions about cultivating self-sustaining stocks of desirable introduced species.