Procambarus acutus (Girard, 1852)

Common Name: White River crawfish

Synonyms and Other Names:

Procambarus acutus is a species complex (Hobbs 1989). Procambarus zonangulus and P. acutus cuevachicae are distinct species that were formerly grouped with P. acutus (Taylor and Schuster 2004).



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Identification: Body color is dark red with a black wedge on dorsal abdomen (Taylor and Schuster 2004). Body color can vary; smaller individuals can be brown with mottled spots (Taylor and Schuster 2004). Chelae possess numerous white tubercles and small tubercles cover the carapace (Taylor and Schuster 2004; Taylor et al. 2015). Procambarus acutus has long, narrow chelae with no space between dactyl and propodus when closed (Taylor and Schuster 2004). Areola is open, but narrow (Walls 2009). Procambarus acutus is often confused with P. clarkii, but there are distinct morphological differences, including a more open areola on P. acutus than on P. clarkii (Larson and Olden 2011). Without crayfish identification experience, P. acutus is indistinguishable from P. zonangulus (Swecker et al. 2010). Procambarus zonangulus has tapered gonopods, while P. acutus gonopods are a constant width (Walls 2009). In most P. zonangulus the ventral surface of the chelae is whitish, while they are a uniform color in P. acutus (Walls 2009).


Size: 7-13 cm total length (USFWS, 2015)


Native Range: Procambarus acutus has a disjunct native distribution which includes the Atlantic Slope, as well as the southern Great Lakes drainages to the Gulf of Mexico (Hobbs 1989; Taylor and Schuster 2004). On the Atlantic Slope, P. acutus occurs from Maine to Georgia (Taylor and Schuster 2004). Procambarus acutus also occurs from southern Wisconsin and Michigan through Kentucky and Missouri to western Texas and the Florida panhandle (Hobbs 1989; Taylor and Schuster 2004).


Great Lakes Nonindigenous Occurrences: Procambarus acutus was collected in Wisconsin in 2011 in the little Menomonee River, and in 2013 at the Mequon Nature Preserve.


Table 1. Great Lakes region nonindigenous occurrences, the earliest and latest observations in each state/province, 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 Procambarus acutus are found here.

Full list of USGS occurrences

State/ProvinceFirst ObservedLast ObservedTotal HUCs with observations†HUCs with observations†
NY201720172Oak Orchard-Twelvemile; Seneca
WI201120131Milwaukee

Table last updated 5/1/2024

† Populations may not be currently present.


Ecology:

White River crayfish mate in early spring and fall and extrude their eggs in spring (Taylor and Schuster 2004). Procambarus acutus will burrow during dry summer and fall seasons (Taylor and Schuster 2004). These burrows provide protection to females with eggs (Page 1985, CABI 2015). Although they only spawn once each year, P. acutus have relatively high fecundity. Mazlum and Eversole (2004) found that females may lay as many as 556 eggs depending on size and nutritional status.


P. acutus have a generalist diet and feed opportunistically (CABI, 2015). However, there is little else reported about the White River Crayfish diet overall.


While Hobbs (1989) reports P. acutus in slow to moderate flow streams, this species is also found in a variety of habitats, including rivers, ditches, creeks, and swamps (Taylor and Schuster 2004).


Means of Introduction: Probable bait bucket or aquaculture introductions with the California introduction occurring as a laboratory release (Bouchard 1977; Taylor and Schuster 2004).


Status: Established in Alabama (Illinois Natural History Survey 2017), Arkansas (Illinois Natural History Survey 2017), Georgia (Hobbs 1981; Skelton 2010), Indiana (Illinois Natural History Survey 2017), Kentucky (Taylor and Schuster 2004), Maryland (Swecker et al. 2010), Missouri (Illinois DiStefano et al. 2015; Natural History Survey 2017), North Carolina (Cooper 2002; Illinois Natural History Survey 2017), New York (Mills et al. 1996; M. Caldwell, pers. comm.), Pennsylvania (K. Kelly, pers. comm.), Wisconsin (GBIF 2013), and West Virginia (Loughman 2007). Failed in California (Bouchard 1977), Colorado (Illinois Natural History Survey 2017), Connecticut (Beauchene 2011), Florida (GBIF 2013), and Oklahoma (Illinois Natural History Survey 2017). Unknown in Massachusetts and Maine (Hobbs 1989). Unknown in Washington, but most likely failed as no additional collections have been made since 2010 (Larson and Olden 2011).


Great Lakes Impacts: Great Lakes Impacts: Procambarus acutus has the potential for moderate environmental impact in the Great Lakes outside of its native range.

Potential: The White River crawfish has been found to host the adult fluke (Alloglossoides caridicola) which may infect other species if P. acutus are introduced outside of their native range (Turner, 1985). There is little research on the actual effects of P. acutus as an invasive species, but due to their high fecundity, rapid growth rate, large chelae, and large maximum size, they may be superior competitors compared to native crayfish in their introduced range (Distefano, 2015). There is the possibility that they could genetically affect native populations through hybridization if there are native species from the same genus present, though this has not been reported (CABI, 2015).

There is little or no evidence to support that Procambarus acutus has the potential for significant socio-economic impact in the Great Lakes outside of its native range.

Potential: White River crawfish do not pose a hazard to human health. They have not been reported to damage infrastructure or affect water quality. There are no records of them harming markets or economic sectors in their introduced range. P. acutus are a burrowing species, so their burrows do have the potential to affect the perceived aesthetic of the waters they inhabit. However, this has not been reported, and would likely only occur at extremely high densities.

There is little or no evidence to support that Procambarus acutus has the potential for significant beneficial impact in the Great Lakes outside of its native range.

Potential: P. acutus have not been found to act as an effective control agent for any harmful organisms. White River crawfish are employed commercially for aquaculture and fishing bait, but the economic contribution of this activity is small. They do not have any recreational value. These crayfish have not been reported to have any medicinal or research value.


Management:         Regulations (pertaining to the Great Lakes region)
        There are no known regulations specific to this species. However, Pennsylvania restricts the sale, possession, introduction and transportation of all crayfish species; Wisconsin  prohibits all non-native crayfish; and Minnesota prohibits the importation of all crayfish into the state. Note: Check federal, state/provincial, and local regulations for the most up-to-date information

    Control
    Biological
    A University of Wisconsin study observed significant declines in an invasive crayfish population when the WI Department of Natural Resources restricted the harvest of known crayfish predators (Hein et al., 2007).
   
    Physical
    Intensive trapping is a common method used to control crayfish (Moorhouse et al., 2014; Peay and Hiley, 2001). While intensive trapping can be used to substantially reduce crayfish abundance, it has not been found to completely eradicate established crayfish populations (Hein et al. 2007).
   

    Chemical
    Allert et al. (2016) found that a four hour exposure to cypermethrin at 100 μg/Liter had led to 100 percent mortality of juvenile and adult White River Crayfish while this same dose did not cause significant mortality in fathead minnows or virile crayfish.

    Other
    There are no known other control methods for this species.


Remarks: Procambarus acutus is an economically important crayfish used in aquaculture and as bait (Taylor and Schuster 2004).


References (click for full reference list)


Author: Durland Donahou, A.


Contributing Agencies:
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Revision Date: 9/12/2019


Citation for this information:
Durland Donahou, A., 2024, Procambarus acutus (Girard, 1852): U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL, and NOAA Great Lakes Aquatic Nonindigenous Species Information System, Ann Arbor, MI, https://nas.er.usgs.gov/queries/greatLakes/FactSheet.aspx?Species_ID=216&Potential=N&Type=0&HUCNumber=DGreatLakes, Revision Date: 9/12/2019, Access Date: 5/1/2024

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.