WINTER AND SPRING DIET OF THE ORANGEBELLY DARTER, ETHEOSTOMA RADIOSUM, AMONG TRIBUTARIES OF THE LOWER MOUNTAIN FORK RIVER

Melissa L. Reed; W. Wyatt Hoback; James M. Long

doi:10.1894/0038-4909-63-2-146

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Melissa L. Reed,^1,* W. Wyatt Hoback,² James M. Long³

¹Department of Environmental Science, Oklahoma State University, Stillwater, OK 74078 (MLR)
²Department of Entomology and Plant Pathology, Oklahoma State University, Stillwater, OK 74078 (WWH)
³United States Geological Survey, Oklahoma Cooperative Fish and Wildlife Research Unit, Department of

^*Correspondent: mleath@okstate.edu

Abstract

Little is known about prey use by the orangebelly darter, Etheostoma radiosum, and what is known has been described from relatively large river systems. We examined prey use by orangebelly darters from first- and second-order tributaries in the Lower Mountain Fork River of southeastern Oklahoma. Adult darters (n = 141) were captured from five tributaries in 2015, and stomach contents were examined to determine prey use. Aquatic isopods were the most frequently consumed organism. This differs notably from previous reports that insects, primarily dipterans, were the predominant prey for the species.

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Melissa L. Reed, W. Wyatt Hoback, and James M. Long "WINTER AND SPRING DIET OF THE ORANGEBELLY DARTER, ETHEOSTOMA RADIOSUM, AMONG TRIBUTARIES OF THE LOWER MOUNTAIN FORK RIVER," The Southwestern Naturalist 63(2), 146-148, (22 May 2019). https://doi.org/10.1894/0038-4909-63-2-146

Received: 6 February 2018; Accepted: 8 November 2018; Published: 22 May 2019

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