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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.




Palaemonetes paludosus
(Riverine Grass Shrimp)
Crustaceans-Shrimp
Native Transplant
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Palaemonetes paludosus (Gibbes, 1850)

Common name: Riverine Grass Shrimp

Taxonomy: available through www.itis.govITIS logo

Native Range: According to Hayden et al. 1963, the riverine grass shrimp is native to freshwater ponds, lakes, and streams of the coastal plain from Florida to New Jersey.
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Puerto Rico &
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Nonindigenous Occurrences:

Table 1. States with nonindigenous occurrences, the earliest and latest observations in each state, and the tally and names of HUCs with observations†. Names and dates are hyperlinked to their relevant specimen records. The list of references for all nonindigenous occurrences of Palaemonetes paludosus are found here.

StateYear of earliest observationYear of last observationTotal HUCs with observations†HUCs with observations†
Arizona196219812Imperial Reservoir; Lower Colorado
California196219812Havasu-Mohave Lakes; Imperial Reservoir
Louisiana195220093East Central Louisiana Coastal; Eastern Louisiana Coastal; West Central Louisiana Coastal
Mississippi195219521Lower Pearl
Oklahoma195219521Red-Little
Texas195219522East Galveston Bay; San Marcos

Table last updated 3/29/2018

† Populations may not be currently present.


Ecology: The riverine grass shrimp is always associated with some sort of aquatic cover and is most abundant in dense beds of submerged aquatic vegetation (Hayden et al., 1963).  They are an important food source for many fish species. 

Means of Introduction: The California Dept. of Fish and Game requested shrimp specimens for introduction into the food chain in the lower Colorado River.  The shrimp were supplied by the FL Game and Fresh Water Fish Commission.  About 225 specimens were planted in Lake Havasu pond on August 27, 1958.  About 1,000 specimens were planted in 3 ponds in the Imperial National Refuge on November 1, 1958.  The 3 ponds were: Taylor Lake pond, Picacho pond, and Imperial Camp bait pond.  The CA Dept. of Fish and Game and the AZ Game and Fish Dept. retuned to the sites during the spring and summer of 1962 to determine the status of the shrimp populations.  Shrimp were found in all sites except the Picacho pond.  It was hypothesized that the shrimp did not survive in Picacho pond sue to intensive fish predation.  The Imperial Camp bait pond had the largest established population. 
In January and Marsh of 1963, 1,100 shrimp were taken from the Imperial Camp bait pond and transplanted into 7 sites:  Branson's Resort (AZ), Marina Village (AZ), Lost Lake Camp in Alligator Slough, backwater below the Palo Verde Weir (AZ), the Palo Verde Drain (west side), Lake Havasu, and Havasu Landing lake pond (Hayden et al., 1963).



References: (click for full references)

Hayden, R. P. and R. D. Ringo. 1963. Introduction of Palaemonetes paludosus, a Freshwater Shrimp, into the Lower Colorado River. California Fish and Game, 49(4), 304-306.

Author: Sheehy, G.E.

Revision Date: 9/21/2009

Citation Information:
Sheehy, G.E., 2018, Palaemonetes paludosus (Gibbes, 1850): U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL, https://nas.er.usgs.gov/queries/FactSheet.aspx?SpeciesID=1207, Revision Date: 9/21/2009, Access Date: 4/21/2018

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.

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Page Last Modified: Monday, April 16, 2018

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The data represented on this site vary in accuracy, scale, completeness, extent of coverage and origin. It is the user's responsibility to use these data consistent with their intended purpose and within stated limitations. We highly recommend reviewing metadata files prior to interpreting these data.

Citation information: U.S. Geological Survey. [2018]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [4/21/2018].

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