Invasion

Invasion Description

1st Established Record?: near the Tappan Zee Bridge [between Nyack and Tarrytown]/NY/Hudson River (R.M. 27) (6/3/2007, male, 70 mm carapace diameter, USGS Nonindigenous Aquatic Species Program 2007; Carin Ferrante, pers. comm.)

1st Record: Between Fort Howard and North Point, Baltimore County/MD/Chesapeake Bay (just outside Patapsco River mouth) (2005, Steve Thaos, pers. comm., Carin Ferrante, pers. comm.).

As of 2009, a breeding population of E. sinensis appears to be established in the Hudson River estuary and tributaries, based on the large numbers (60+) of individuals, ranging from juveniles to adults, and ranging from upland streams to marine waters (Darrick Sparks, personal communication, Schmidt et al. 2009). Breeding in other Mid-Atlantic US estuaries is possible, but has not yet been confirmed. The absence of recent records is paralleled both on the East and West Coasts, but it is possible that populations are persisting at low levels of abundance. For now, we will treat the population as established. The latest record that we have for the Hudson River was in, 7/18/2014, at Norrie Point, State Park, at Norrie Point State Park/NY/Indian Kill (7/18/2014, Hudson River Alamanac https://content.govdelivery.com/accounts/NYSDEC/bulletins/c7a56b, 41.840248 -73.930992). Two specimens were collected in 2012 and 2014 in the Mianus River, Connecticut, a Long Island Sound tributary (Nancy Balcom, personal communcation, 7/22/2016).

Geographic Extent

Long Island Sound- Mianus Pond fishway in Greenwich/CT/Mianus River (6/2012, Darrick Sparks, personal communication, USGS Nonindigenous Aquatic Species Program, 1 specimen, 29 mm; 10/30/2014, Matthew Goclowski , personal communication, 1 specimen, female, ~60 mm carapace width); 7/18/2016, 1 male, ~40 mm, Nancy Balcom 7/22/2016, personal communcation).; New Haven/CT/New Haven Harbor, Connecticut (4/2018, Hudson et al. 2019, 41.248389°N; 72.934833°W, 1 specimen).; Between Stratford and Milford/CT/Houstonic River (12/209, Krasslet et al. 2020); Smithtown, SussexCounty, Long Island/NY/Phillips Mill Pond, Nissequogue River, Long Island Sound (9/17/2021, SGS Nonindigenous Aquatic Species Program 2021).;  Bridgeport/CTPequonnock River (6/5/23, i-Natruralist  https://www.inaturalist.org/observations/165799217);' Lyme/CT/Hmaburg Cove (5/14/2023, https://www.inaturalist.org/observations/161668677, molt); Bronx, New York/City/Bronx River (5/8/2023, https://www.inaturalist.org/observations/160564109); Westport/CT/near Saugatuck River (9/20/23, https://www.inaturalist.org/observations/135813615)

Hudson River- Tivoli/NY/Saw Kill, Hudson River (6/28-8/18/2011, 3 females, 20, 33, 53 mm; 5 males, 16-26 mm, http://www.serc.si.edu/labs/marine_invasions/news/CHINESE_MITTEN_CRAB_ALERT_21July2008.pdf, Carin Ferrante, pers. Comm.); Norrie Pt, Staatsburg,/NY/Hudson River (8/5-10/4/2008, Carin Ferrante, personal communication, 41831876N/07394160W, 40 mm male, 30 mm female); Norrie Pt, Staatsburg/NY/Hudson River (5/8/08, Carin Ferrante, personal communication; Poughkeepsie/NY/Fall Kill (9/17/2008, 1 male, 1 female, both 45 mm); Poughkeepsie/NY/Fall Kill (7/17/09-9/13/09, 4 males, 3 females, 42-56 mm, Darrick Sparks, personal communication); Greene County/NY/Catskill Creek (9/28/-10/2/2008, Carin Ferrante, personal communication, 2 females, 56, 64 mm); river mile 74, just south of Poughkeepsie/NY/Hudson River (10/10/2008, Carin Ferrante, personal communication, 1 male); Danskammer Powerplant, near Newburgh/NY/Hudson River (1/11/08, on 3/4 Impingement mechanism, male, 25.5 mm, Carin Ferrante, pers. Comm.); Roesten Powerplant/NY/Hudson River (10-23-2008, Carin Ferrante, personal communication, 1 male, 63 mm, 41.486334,-74.008541); Newburgh/NY/Newburgh Bay, Hudson River (10/6/09, 1 male, 56 mm, Darrick Sparks, personal communication); Cornwall Bay/NY/Hudson River (10/10/2008, Carin Ferrante, personal communication, 1 male, 53 mm, 10/24/08, 1 male 55 mm, 1 female 57 mm, 1 female 48mm); Cornwall Bay/NY/Hudson River (9/18/09-10/26/09, 9 females, 2 males, 56-78mm, personal communication); Sparkill/NY/Sparkill Creek (9/29/09, Darrick Spark, personal communication, 1 male, 6 females, 49-59 mm); Cold Spring Boat Club, Cold Spring/NY/Hudson River (10/29/2007, juvenile female, 30.5 mm, washed up on shore, Carin Ferrante, pers. Comm.); NY/Haverstraw Bay, Hudson River (10/15/2007, Carin Ferrante, personal communication, 3 females, 54, 70 mm); near the Tappan Zee Bridge [between Nyack and Tarrytown]/NY/Hudson River (R.M. 27) (6/3/2007, male, 70 mm carapace diameter, USGS Nonindigenous Aquatic Species Program 2007; Carin Ferrante, pers. Comm.); Yonkers/NY/Hudson River (7/28/2009, 1 male 65 mm, Darrick Sparks, personal communication); Colgate Center Clock, Jersey City/NJ/Hudson River (3/12/2009, Carin Ferrante, personal communication, 1 female)

Raritan Bay- Keyport/NJ/Raritan Bay (6/17/2008, http://www.serc.si.edu/labs/marine_invasions/news/CHINESE_MITTEN_CRAB_ALERT_21July2008.pdf); South Amboy/NJ/Raritan Bay (5/20-6/12/2009, 32 crabs, 19 males, 13 females, 3 with eggs. Size range, 38-72mm, Darrick Sparks, personal communication); Coxsackie/NY/Hudson River (5/19/2009, 1 male, 67 mm, Darrick Sparks, personal communication); Keyport/NJ/Matawan Creek (6/20/2009, 1 female, 58mm, Darrick Sparks, personal communication); Bayonne/NJ/New York or Newark Harbor (8/10/2010, Sparks, personal communication); NJ/Belford Creek (5/24/2009, female with eggs, Darrick Sparks, personal communication); NJ/Navesink river (3/9/2009, Carin Ferrante, personal communication, 1 male, 75 mm)

Little Silver/NJ/Shrewsbury River (4/18/09, Darrick Sparks, personal communication); by Allenwood/NJ/Manasquan River (10/9/2009, Darrick Sparks, personal communication, 1 female, 64 mm); Toms River/NJ/Toms River, Barnegat Bay (6/1/2008, 50 mm http://www.serc.si.edu/labs/marine_invasions/news/CHINESE_MITTEN_CRAB_ALERT_21July2008.pdf); Seaside Park/NJ/ Barnegat Bay (5/23/09, Darrick Sparks, pers. Comm.)

Delaware River and Bay- Liston Point/DE/Delaware Bay (5-25-2007, male 67 mm carapace diameter, Center for Aquatic Resource Studies 2007); Woodland Beach/DE/Delaware Bay (5-29-30-2007, 3 males 69-73.4 mm carapace diameter, Carin Ferrante, pers. Comm.); Silver Bed Oyster Bar/DE/Simons River (7-11-07, 63.4 mm female, Carin Ferrante, pers. Comm.); NJ/Delaware Bay (7-2-09, 67 mm female); NJ/Upper Delaware Bay (5/31-6/2/09, 2 males, 58-70 mm, Darrick Sparks, pers. Comm.); Augustine Beach-Cedar Swamp/DE/Delaware River (8/26/09, Darrick Sparks, pers. Comm., 1 female, 58 mm)

Chesapeake Bay- Between Fort Howard and North Point, Baltimore County/MD/Chesapeake Bay (just outside Patapsco River mouth) (5-2005, male, 62 mm carapace diameter, Steve Thaos, pers. Comm.; Carin Stringer, pers. Comm.); Sevenmile Knoll/MD/Patapsco River mouth (6-9-2006, male, 62 mm carapace diameter, John Delp, personal communication); Holland Point Bar, north of Chesapeake Beach/MD/Chesapeake Bay (5-18-2007, male, 64.4 mm carapace diameter, Pelton 2007, Wood 2007); Bloody Point Light, Kent Island/MD/Chesapeake Bay (6-23-07, female, 66.1 mm carapace diameter, Carin Ferrante, pers. Comm.); Cove Pt Light, Cove Point/MD/Chesapeake Bay (6/01/08, female 60-63.5 mm, Carin Ferrante, pers. Comm.)