Species

River Shrimp: Long-Armed, Long-Distance Traveler

Jan Jeffrey Hoover US Army Engineer Research and Development Center Vicksburg, MS Shrimp are typically thought of as marine animals, characteristic of Gulf waters, but there are also species inhabiting the fresh waters of the Mississippi River.  The largest of these (60-100 mm) is the Ohio River shrimp, or simply “river shrimp” (Macrobrachium ohione).  Like its saltwater relatives, the river shrimp...

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Endangered Fat Pocketbook Mussel Found Along the Lower Miss

The endangered Fat Pocketbook mussel is one of three priority species listed in a  Strategic Habitat Conservation Plan for the Lower Mississippi River. Although it was listed as federally endangered in 1976, and at that time known only from the St. Francis River system in Arkansas, it was first found in the main channel of the lower river about two...

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The Paddlefish: Primitive Fish Inspiring Future Technology

Jan Jeffrey Hoover  and Edward J. Perkins Environmental Laboratory US Army Engineer Research and Development Center Vicksburg, MS  The North American paddlefish (Polyodon spathula) is a primitive species with an unusually sophisticated multi-purpose tool: its snout.  Common in the lower Mississippi River basin, it is harvested for its eggs which provide gourmets with caviar rivaling that of related sturgeon species. ...

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Piebald Blues: Rarest Catfish in the Lower Mississippi River

Jan Jeffrey Hoover and K. Jack Killgore Fish Ecology Team, Environmental Laboratory United States Army Engineer Research and Development Center Vicksburg, MS During the past 17 years of sampling the Lower Mississippi River, the US Army Engineer Research and Development Center (ERDC) Fish Ecology Team has collected more than 2,050 flathead catfish, 9,300 channel catfish, and 22,230 blue catfish –...

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