Species Regional Summary
Palaemon macrodactylus
None ( NEA-V )

Invasion History Vectors Impacts References

Invasion

Invasion Description

1st Record: San Lucar de Barrameda/Spain/Guadualquivir River estuary (1997, Cuesta et al. 2004)

Geographic Extent

France/Gironde Estuary, Bay of Biscay (2006, Beguer et al. 2007; Beguer et al. 2011); Arcachon/France/Arcachon Bay (2009, Lavesque et al. 2010); France/Adour estuary, Bay of Biscay (2006, Beguer et al. 2007, 1 female); Bidassoa/France/Bay of Biscay (2009, Lavesque et al. 2010); Parque das Nações marinas/Portugal/Tagus estuary (Afonso et al. 2020); San Lucar de Barrameda/Spain/Guadualquivir River estuary (Cuesta et al. 2004); Porto Santa Maria/Spain/Guadalete River estuary (1999, Cuesta et al. 2004), Cadiz/Spain/San Pedro River estuary (1999, Cuesta et al. 2004); Spain-Portugal/Guadiana estuary (2004, Chicharo et al. 2009, Chainho et al. 2015, adults first seen in 2008); Portugal/Sado Estuary (2021, Riberio et al. 2023)

Vectors

Level Vector
Probable Ballast Water

Regional Impacts

Ecological ImpactCompetition
In the Guadalquivir Estuary, Spain, competition between P. macrodactylus and the native Palaemon longirostris is considered possible, since diets strongly overlap (Gonzalez-Ortegon et al. 2010). Competition may be limited, however, since P. macrodactylus primarily utilizes the low-salinity regions of the estuary, where P. longirostris is rare (Gonzalez-Ortegon et al. 2010). One competitive advantage of P. macrodactylus over P. longirostris, and other species, is its greater ability to use areas of low oxygen concentration (Gonzalez-Ortegon et al. 2010; Gonzalez-Ortegon et al. 2013). In the Gironde estuary, France, P. macrodactylus initially colonized areas little-used by P. longirostris, but has begun to displace it due to higher reproductive rates (Beguer et al. 2011).
 

References

Full Reference List for Palaemon macrodactylus

  • Nemesis (current)
  • Marine Invasions Lab
  • Partner Portals
    Nemesis California Panama Galapagos Cocos Island NP JTMD
    Archived Projects
    Chesapeake
  • Browse Species
    Taxonomic Groups All Species
  • Browse Regions
    States
    Alaska
    Bioregions & Bays
  • News
  • login

Direct questions and comments to nemesis@si.edu.

©