Reintroduction of Lake Sturgeon (Acipenser fulvescens) into the St. Regis River, NY: Post- Release Assessment of Habitat Use and Growth

• Published in: Northeastern naturalist Vol. 22; no. 4; pp. 704 - 716
• Main Authors: Dittman, Dawn E, Chalupnicki, Marc A, Johnson, James H, Snyder, James
• Format: Journal Article
• Language: English
• Published: Steuben Humboldt Field Research Institute 01.12.2015; Eagle Hill Institute; Northeastern Naturalist
• Subjects: Endangered & extinct species; Fishing; Hotels & motels; Lakes; Management decisions; Population; River ecology; Short term
• ISSN: 1092-6194; 1938-5307
• DOI: 10.1656/045.022.0408

One of the depleted endemic fish species of the Great Lakes, Acipenser fulvescens (Lake Sturgeon), has been the target of extensive conservation efforts. One strategy is reintroduction into historically productive waters. The St. Regis River, NY, represents one such adaptive-management effort, with shared management between New York and the St. Regis Mohawk Tribe. Between 1998 and 2004, a total of 4977 young-of-year Lake Sturgeon were released. Adaptive management requires intermediate progress metrics. During 2004 and 2005, we measured growth, habitat use, and survivorship metrics of the released fish. We captured a total of 95 individuals of all stocked ages. Year-class minimal-survival rates ranged from 0.19–2.1%. The size-at-age and length/biomass relationships were comparable to those reported for juveniles in other Great Lakes waters. These intermediate assessment metrics can provide feedback to resource managers who make restoration-program decisions on a much shorter time-scale than the time-frame in which the ultimate goal of a self-sustaining population can be attained.