Occurrence, habitat, and movements of the endangered northern madtom ( Noturus stigmosus ) in the Detroit River, 2003-2011

Bruce A. Manny; Bryon A. Daley; James C. Boase; A. Horne; Justin A. Chiotti

doi:10.1016/j.jglr.2014.01.005

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Occurrence, habitat, and movements of the endangered northern madtom ( Noturus stigmosus ) in the Detroit River, 2003-2011

Bruce A. Manny·Bryon A. Daley·James C. Boase·A. Horne·Justin A. Chiotti

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Abstract

The northern madtom ( Noturus stigmosus or NOM) is a small catfish, native to North America. It is globally vulnerable and endangered in Canada, Ontario, and Michigan. In 1994 and 1996, it was found in the St. Clair River and in Lake St. Clair, respectively. However, it had not been found downstream in the Detroit River since 1978. We report catches of 304 NOM from 2003 to 2011 and describe their mud and sand habitats in the deep (10 m), dark, Detroit River. We found adult NOM, including 3 ripe males (90–107 mm SL) in head waters of the river near Belle Isle in Michigan waters, and both adult and 4 juvenile NOM (21–30 mm SL) near Peche Island in Ontario waters. From 2009 to 2011, in the river's middle reach, we caught 7 adult NOM for the first time near Fighting Island in Ontario waters, but no NOM in the river's lower reach. Our mark–recapture results showed that within 6 weeks, 2 adult NOM moved east 2.0 km from Michigan waters near Belle Isle across the deep (10 m) Fleming Channel of the Detroit River to Canadian waters near Peche Island. Analysis of annuli from pectoral spines of 7 dead NOM revealed that they live to at least 6 years of age in the Detroit River. This is the first age data that we could find for a NOM population. Our findings extended our knowledge of habitat, reproductive ecology, age, and distribution of NOM in the Detroit River corridor.

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Journal of Great Lakes Research Article

Source-reported bounding extent: 42.046233275485214° to 42.38898005764399° latitude; -83.19602966308594° to -82.86575317382812° longitude. This indicates report coverage, not an exact sampling location. View area on OpenStreetMap.

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Bruce A. Manny, Bryon A. Daley, James C. Boase, A. Horne, Justin A. Chiotti. 2014. Occurrence, habitat, and movements of the endangered northern madtom ( Noturus stigmosus ) in the Detroit River, 2003-2011. https://doi.org/10.1016/j.jglr.2014.01.005

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