NAS - Nonindigenous Aquatic Species

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The Nonindigenous Occurrences section of the NAS species profiles has a new structure. The section is now dynamically updated from the NAS database to ensure that it contains the most current and accurate information. Occurrences are summarized in Table 1, alphabetically by state, with years of earliest and most recent observations, and the tally and names of drainages where the species was observed. The table contains hyperlinks to collections tables of specimens based on the states, years, and drainages selected. References to specimens that were not obtained through sighting reports and personal communications are found through the hyperlink in the Table 1 caption or through the individual specimens linked in the collections tables.

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Common name: Mississippi Grass Shrimp

Taxonomy: available through www.itis.gov

Size: up to 50 mm in length (Pennak 1989)

Native Range: This shrimp ranges from northeastern Mexico, Mississippi River north to the Great Lakes and east to Florida (see Page, 1985; Fig. 87, p. 360). It is sporadic in the central US, west of the Allegheny Mountains, and from the Gulf of Mexico to Canada (Pennak 1989).

Means of Introduction: Unknown, could be a natural range expansion.

References: (click for full references)

Page, L. M. 1985. The crayfishes and shrimps (decapods) of Illinois. Ill. Nat. Hist. Surv. Bull., 33(4):335-447.

Pennak, R. W. 1989. Fresh-water invertebrates of the United States, 3rd ed. John Wiley & Sons, New York.

Author: Benson, A.J.

This information is preliminary or provisional and is subject to revision. It is being provided to meet the need for timely best science. The information has not received final approval by the U.S. Geological Survey (USGS) and is provided on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from the authorized or unauthorized use of the information.