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Title:Status, distribution, and resource requirements of the longnose dace Rhinichthys cataractae (Valenciennes) in the Wisconsin Driftless region of Illinois
Author(s):Tiemann, Jeremy S.; Taylor, Christopher A.; Knouft, Jason H.; Sherwood,Joshua L.
Subject(s):longnose dace
Rhinichthys cataractae
status surveys
stable isotopes
GIS
Illinois Endangered Species Protection Board
Abstract:The longnose dace Rhinichthys cataractae (Valenciennes) is a small, elongated, slightly dorsoventrally compressed minnow that possesses the widest distribution of any North American cyprinid. In Illinois, it is known from streams in the Wisconsin Driftless Area and the shoreline of Lake Michigan. We examined the distribution and population status, habitat requirements, and diet of R. cataractae in the Wisconsin Driftless Area in Illinois. The dace was collected at 11 of the 33 sites sampled, and catch-per-unit-effort (standardized by number of individuals per hour collecting) varied from 0.8 to 52 per site. It was found most often in gravel/cobble riffles in small- to medium-sized streams. Stable isotope analysis showed the diet of R. cataractae to be dominated by macroinvertebrates and periphyton. Although its range is limited in Illinois, the dace is locally abundant in several basins and we feel it does not warrant listing at this time.
Issue Date:2009-10-19
Publisher:Illinois Natural History Survey
Series/Report:Technical Report
Technical Report INHS 2009 (33)
Genre:Report (Grant or Annual)
Type:Text
URI:http://hdl.handle.net/2142/30841
Publication Status:unpublished
Peer Reviewed:not peer reviewed
Rights Information:This document is a product of the Illinois Natural History Survey, and has been selected and made available by the Illinois Natural History Survey and the University Library, University of Illinois at Urbana-Champaign. It is intended solely for noncommercial research and educational use, and proper attribution is requested.
Date Available in IDEALS:2012-05-11


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