2022 Early Hearing Detection & Intervention Virtual Conference
March 13 - 15, 2022
6/08/2017 | 10:15 AM - 10:30 AM | MIGRATION DYNAMICS OF OHIO SHRIMP, MACROBRACHIUM OHIONE, IN THE LOWER MISSISSIPPI RIVER | 306C
MIGRATION DYNAMICS OF OHIO SHRIMP, MACROBRACHIUM OHIONE, IN THE LOWER MISSISSIPPI RIVER
The Ohio shrimp is amphidromous, serving as a trophic link between the Gulf of Mexico and inland reaches of coastal plain rivers. Ohio shrimp feed primarily on basal food resources, transferring energy to fish predators within river channels such as pallid and shovelnose sturgeons. Current distribution, abundance, and life history of Ohio shrimp are relatively unknown upriver of Louisiana. Historical range of Ohio shrimp included the Ohio River and Upper Mississippi River, but abundance upriver of Louisiana has reportedly declined. We collected shrimp monthly from March 2016 through November 2016 with wire-meshed traps deployed along the mainstem Mississippi River and Lower Arkansas, White, and St. Francis rivers. Total catch increased in May, peaked in June, and declined from July to November. We captured a male-skewed population in May, slightly male-skewed in June, and in July the population was female-skewed. Relatively fewer females in traps during spring was possibly a result of downriver movement, indicative of an amphidromous life history. Despite declines from historic densities, Ohio shrimp likely remain important components of food webs in the Arkansas reach of the lower Mississippi River and its tributaries.
- C06 Large River Ecology
- C15 Population Ecology
- C03 Invertebrates
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Presenters/Authors
Geoffry Spooner
(), University of Central Arkansas, gspooner1@cub.uca.edu;
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Lindsey Lewis
(), US Fish and Wildlife Service, lindsey_lewis@fws.gov;
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Reid Adams
(), University of Central Arkansas, radams@uca.edu;
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