Dispersal of the Ponto-Caspian amphipod Echinogammarus ischnus: invasion waves from the Pleistocene to the present

Cristescu, Melania E.; Witt, Jessica K.; Grigorovich, Igor A.; Hebert, Paul D. N.; MacIsaac, Hugh J.

doi:10.1038/sj.hdy.6800395

Cited by 66 publications

(65 citation statements)

References 32 publications

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“…This finding is consistent with the predominant occurrence of E. ischnus in ion-rich waters within its native range (Wijnhoven et al 2003;Cristescu et al 2004). Although both species tolerate fresh water, the conductivities at our IC and LC sites could be at the lower tolerance limit of the invader.…”

Section: Discussionsupporting

confidence: 93%

“…However, there is contrasting evidence regarding the mechanisms of dominance and species replacement involving E. ischnus and G. fasciatus (Dermott et al 1998;Van Overdijk et al 2003;Limén et al 2005), and thusfar no studies have examined the influence of conductivity on E. ischnus dominance. Although both amphipods have a freshwater ancestry (Barnard and Barnard 1983), E. ischnus is a euryhaline species adapted to fresh and brackish water environments with high conductivity and calcium concentration (Cristescu et al 2004) and its activity is reduced in ion-poor water (Wijnhoven et al 2003), whereas G. fasciatus is a strictly freshwater species (Clemens 1950;Holsinger 1972).…”

Section: Introductionmentioning

confidence: 98%

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Environmental heterogeneity limits the local dominance of an invasive freshwater crustacean

Kestrup

Ricciardi

2009

Biol Invasions

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The impacts of an exotic species may vary along environmental gradients. We tested the hypothesis that site-specific heterogeneity in the physico-chemical environment alters the dominance of two competing amphipods: Gammarus fasciatus, the dominant native species in the upper St. Lawrence River, and Echinogammarus ischnus, a euryhaline Ponto-Caspian species that invaded the river in the late 1990s. E. ischnus has replaced G. fasciatus as the dominant amphipod at some sites, while remaining inferior at other sites-even several years after invasion. We tested the effect of water chemistry (conductivity) on the outcome of interactions between these two species in the laboratory and in the river in 2006 and 2007. Field experiments involved transplanting both species to different sites along a gradient of conductivity within the river, whereas the laboratory experiments examined interspecific predation in water collected from these sites. The laboratory experiments revealed that these species are mutual predators and their rate of predation on each other varies with conductivity; E. ischnus is the dominant predator at higher conductivity, while G. fasciatus dominates at lower conductivity. The field experiments showed interannual variation, but supported the lab results at high conductivity in 2006 and at low conductivity in 2007. E. ischnus was more sensitive than G. fasciatus to variation in conductivity, which apparently mediates this invader's ability to replace or dominate the native species in a heterogeneous environment.

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Section: Discussionsupporting

confidence: 93%

Section: Introductionmentioning

confidence: 98%

Environmental heterogeneity limits the local dominance of an invasive freshwater crustacean

Kestrup

Ricciardi

2009

Biol Invasions

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“…For example, invasive alien populations of E. sinensis show significantly lower levels of variation at microsatellite loci than their native counterparts (Herborg et al 2007c;Sui et al 2009). Other examples of colonization bottlenecks include the predatory cladoceran C. pengoi (Cristescu et al 2001), the amphipod E. ischnus (Cristescu et al 2004) and the water flea B. longimanus. In the latter case, there is evidence that high levels of gene flow from native populations and between invasive alien populations have offset the effect of the colonisation bottleneck.…”

Section: Evolutionary Factorsmentioning

confidence: 99%

Invasive alien Crustacea: dispersal, establishment, impact and control

2011

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The subphylum Crustacea includes the most successful species among aquatic alien invaders. The impacts of invasive alien crustaceans (IAC) are often substantial, due to the complex trophic role of most of these species leading to cascading effects throughout the invaded ecosystems. IAC also have the potential to cause a shift in the 'keystone' ecosystem functions, changing energy flux and nutrient cycles which together affect critical ecosystem services such as biodiversity, fisheries yield and water quality. Although no individual trait appears to be a good predictor of invasion success, a combination of some characteristics such as eurytolerance, omnivory and certain r-selected life-history traits results in a high probability of alien crustacean species becoming invasive. Both environmental factors, such as habitat heterogeneity in the invaded ecosystems, and evolutionary factors, such as adaptations to new environmental conditions, also play important roles during establishment. Therefore, individual environmental niche models, including genetic algorithm, have the highest likelihood of providing useful predictive information about invasion success and spread of alien Crustacea. Attempts to control IAC through biocides or mechanical removal have had mixed success in the past but a strategic combination of different methods may lead to some success in the future.

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“…However, genetic drift associated with invasion founder effects can also unlock the adaptive potential of genetic variation that is masked by dominance or epistasis in the native range, allowing rapid adaptation by invasive species (Lee 2002). Reductions in genetic diversity at neutral marker loci have been documented in the invasive amphipods Crangonyx pseudogracilis (Slothouber Galbreath et al 2010), Echinogammarus ischnus (Cristescu et al 2004) and Gammarus tigrinus (Kelly et al 2006), all highly successful transcontinental invaders. However, where progagule pressure is high, as in cases of recurrent invasions or those involving large numbers of individuals, genetic diversity within the invaded range may be as high, or even higher than in the native range.…”

Section: Introductionmentioning

confidence: 97%

Enemy release and genetic founder effects in invasive killer shrimp populations of Great Britain

et al. 2014

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Arundell, K., Dunn, A., Alexander, J. L., Shearman, R., Archer, N., Ironside, J. (2015). Enemy release and genetic founder effects in invasive killer shrimp populations of Great Britain. Biological Invasions, 17 (5), 1439-1451. Document embargo until 04/11/2015The predatory ?killer shrimp? Dikerogammarus villosus invaded Britain from mainland Europe in 2010. Originating in the Ponto-Caspian region, this invader has caused significant degradation of European freshwater ecosystems by predating and competitively excluding native invertebrate species. In contrast to continental Europe, in which invasions occurred through the migration of large numbers of individuals along rivers and canals, the invasion of Great Britain must have involved long distance dispersal across the sea. This makes the loss of genetic diversity and of debilitating parasites more likely. Analysis of nuclear microsatellite loci and mitochondrial DNA sequences of D. villosus samples from the four known populations in Britain reveal loss of rare alleles, in comparison to reference populations from the west coast of continental Europe. Screening of the British D. villosus populations by PCR detected no microsporidian parasites, in contrast with continental populations of D. villosus and native amphipod populations, most of which are infected with microsporidia. These findings suggest that the initial colonisation of Great Britain and subsequent long distance dispersal within Britain were associated with genetic founder effects and enemy release due to loss of parasites. Such effects are also likely to occur during future long-distance dispersal events of D. villosus to Ireland or North America.authorsversionPeer reviewe

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Dispersal of the Ponto-Caspian amphipod Echinogammarus ischnus: invasion waves from the Pleistocene to the present

Cited by 66 publications

References 32 publications

Environmental heterogeneity limits the local dominance of an invasive freshwater crustacean

Environmental heterogeneity limits the local dominance of an invasive freshwater crustacean

Invasive alien Crustacea: dispersal, establishment, impact and control

Enemy release and genetic founder effects in invasive killer shrimp populations of Great Britain

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