Abstract
The invasion of the green crab Carcinus maenas in the northeastern U.S. and its competition with the native blue crab Callinectes sapidus and other native crustaceans has been well-documented and researched. Various reasons for the invader’s success against native crabs have been examined (juvenile predation, food source flexibility, etc.), but another possibility is a difference in the learning ability of invasive versus native crab species. In this study, the learning ability of C. maenas and C. sapidus was tested by their increased speed in locating hidden food over successive days. The data suggest that C. maenas possesses a learning ability significantly greater than that of C. sapidus, which may partially contribute to its success.

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References
Abramson CI, Feinman RD (1990) Lever-press conditioning in the crab. Physiol Behav 48(2):267–272
Cohen AN, Carlton JT, Fountain MC (1995) Introduction, dispersal, and potential impacts of the green crab Carcinus maenas in San Francisco Bay, California. Mar Biol 122:225–237
Cunningham PN, Hughes RN (1984) Learning of predatory skills by shore crabs C. maenas feeding on mussels and dogwhelks. Mar Ecol Prog Ser 16:21–26
DeRivera CE, Ruiz GM, Hines AH, Jivoff P (2005) Biotic resistance to invasion: native predator limits abundance and distribution of an introduced crab. Ecology 86(12):3364–3376
Dittel AI, Epifanio CE, Fogel ML (2006) Trophic relationships of juvenile blue crabs (Callinectes sapidus) in estuarine habitats. Hydrobiologia 568:379–390
Floyd T, Williams J (2004) Impact of a green crab (Carcinus maenas L.) predation on a population of soft-shell clams (Mya arenaria L.) in the Southern Gulf of St. Lawrence. J Shellfish Res 23(2):457–462
Fukushi T, Wehner R (2004) Navigation in wood ants Formica japonica: context dependent use of landmarks. J Exp Biol 207(19):3431–3439
Gherardi F, Atema J (2003) Individual recognition in hermit crabs: learning and forgetting the opponent’s identity. Integr Comp Biol 43(6):854
Gherardi F, Atema J (2005) Memory of social partners in hermit crab dominance. Ethology 111(3):271–285
Hazlett BA (1995) Behavioral plasticity in crustacea: why not more? J Exp Mar Biol Ecol 193(2):57–66
Hazlett BA, Acquistopace P, Gherardi F (2002) Differences in memory capabilities in invasive and native crayfish. J Crust Biol 22:439–448
Henry RP (2005) Critical salinity, sensitivity, and commitment of salinity-mediated carbonic anhydrase induction in the gills of 2 euryhaline species of decapod crustaceans. J Exp Zool Part A 303A(1):45–56
Hughes RN, Elner RW (1979) Tactics of a predator Carcinus maenas and morphological responses of the prey Nucella lapillus. J Anim Ecol 48:65–78
Hughes RN, O’Brien N (2001) Shore crabs are able to transfer learned handling skills to novel prey. Anim Behav 61(4):711–714
Lafferty K, Kuris A (1996) Biological control of marine pests. Ecology 77:1989–2000
Lohrer AM, Whitlatch RB (2002) Relative impacts of two exotic brachyuran species on blue mussel populations in Long Island Sound. Mar Ecol Prog Ser 227:135–144
MacDonald J, Roudez R, Glover T, Weis JS (2007) The invasive green crab and Japanese shore crab: behavioral interactions with a native crab species, the blue crab. Biol Invas 9:837–848
McDonald PJ, Jensen GC, Armstrong DA (2001) The competitive and predatory impacts of the non-indigenous crab Carcinus maenas (L.) on early benthic phase Dungeness crab Cancer magister Dana. J Exp Mar Biol Ecol 258:39–54
Micheli F (1995) Behavioural plasticity in prey-size selectivity of the blue crab Callinectes sapidus feeding on bivalve prey. J Anim Ecol 64:63–74
Miller TW (1996) First record of the green crab, Carcinus maenas in Humboldt Bay, California. Calif Fish Game 82(2):93–96
Miron G, Audet D, Landry T, Mariyasu M (2005) Predation potential of the invasive green crab and other common predators on commercial bivalve species found on Prince Edward Isl. J Shellfish Res 24(2):579–586
Moksnes PO (2004) Self-regulating mechanisms in cannibalistic populations of juvenile shore crabs Carcinus maenas. Ecology 85(5):1343–1354
Pedreira ME, Perez-Cuesta LM, Maldonado H (2002) Reactivation and reconsolidation of long-term memory in the crab Chasmagnathus: protein synthesis requirement and mediation by NMDA-type glutamatergic receptors. J Neurosci 22:8305–8311
Roman J, Palumbi SR (2004) A global invader at home: population structure of the green crab, Carcinus maenas, in Europe. Mol Ecol 13:2891–2898
Ropes JW (1968) The feeding habits of the green crab, Carcinus maenas. Fish Bull 67:183–203
Rossong MA, Williams PJ, Comeau M, Mitchell SC, Apaloo J (2006) Agonistic interactions between the invasive green crab, Carcinus maenas (Linnaeus) and juvenile American lobster Homarus americanus (Milne Edwards). J Exp Mar Biol Ecol 329:281–288
Smith LD (2004) Biogeographic differences in claw size and performance in an introduced crab predator Carcinus maenas. Mar Ecol Prog Ser 276:209–222
Sol D, Székely T, Liker A, Lefebvre L (2007) Big-brained birds survive better in nature. Proc R Soc Lond B 274:763–769
Taylor DL (2005) Predatory impact of the green crab (Carcinus maenas Linnaeus) on post-settlement winter flounder (Pseudopleuronectes americanus Walbaum) as revealed by immunological dietary analysis. J Exp Mar Biol Ecol 324:112–126
Tomsic D, DeAstrada MB, Sztarker J (2003) Identification of individual neurons reflecting short- and long-term visual memory in an arthropod. J Neurosci 23(24):8539–8546
Valseechi P, Bartolomucci A, Aversano M, Visalberghi E (2000) Learning to cope with two different food distributions: the performance of house mice. J Comp Psychol 114(3):272–280
Yamada SB, Dumbauld BR, Kalin A, Hunt CE, Figlar R (2005) Growth and persistence of a recent invader Carcinus maenas in estuaries of the northeastern Pacific. Biol Invas 7:309–321
Acknowledgements
We thank James MacDonald and Jessica Reichmuth for assistance in collecting subjects and materials, and for their advice. This study was supported by the Honors College of Rutgers University, Newark.
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Roudez, R.J., Glover, T. & Weis, J.S. Learning in an invasive and a native predatory crab. Biol Invasions 10, 1191–1196 (2008). https://doi.org/10.1007/s10530-007-9195-9
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DOI: https://doi.org/10.1007/s10530-007-9195-9


