Adaption of egg and larvae sampling techniques for lake sturgeon and broadcast spawning fishes in a deep river

Journal of Applied Ichthyology
By: , and 

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Abstract

In this report we describe how we adapted two techniques for sampling lake sturgeon (Acipenser fulvescens) and other fish early life history stages to meet our research needs in the Detroit River, a deep, flowing Great Lakes connecting channel. First, we developed a buoy-less method for sampling fish eggs and spawning activity using egg mats deployed on the river bottom. The buoy-less method allowed us to fish gear in areas frequented by boaters and recreational anglers, thus eliminating surface obstructions that interfered with recreational and boating activities. The buoy-less method also reduced gear loss due to drift when masses of floating aquatic vegetation would accumulate on buoys and lines, increasing the drag on the gear and pulling it downstream. Second, we adapted a D-frame drift net system formerly employed in shallow streams to assess larval lake sturgeon dispersal for use in the deeper (>8 m) Detroit River using an anchor and buoy system.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Adaption of egg and larvae sampling techniques for lake sturgeon and broadcast spawning fishes in a deep river
Series title Journal of Applied Ichthyology
DOI 10.1111/j.1439-0426.2011.01828.x
Volume 27
Year Published 2011
Language English
Publisher Wiley
Contributing office(s) Great Lakes Science Center
Larger Work Type Article
Larger Work Subtype Journal Article
Larger Work Title Journal of Applied Ichthyology
First page 89
Last page 92
Country United States