First records, pathways and distributions of four new Ponto-Caspian amphipods in France

Abstract

International audienceIn Europe, the number of establishment of non-native species, especially from Ponto-Caspian area, has dramatically increased over the past decades and induced important changes in macroinvertebrate assemblages, mainly in large rivers. However, although many Ponto-Caspian species were established in adjacent countries, only two Ponto-Caspian amphipods were formally observed in French hydrosystems since 1996. To update our knowledge on the present distribution of the Ponto-Caspian species in France, we collected amphipods from 203 sites in the Rhine, Meuse and Seine River basins in 2008 and again in 2009. Thirteen amphipod species were found in the study area. Among them, four were first formally recorded in France (Dikerogammarus haemobaphes, Dikerogammarus bispinosus, Echinogammarus ischnus, and Echinogammarus trichiatus). Our study revealed three different corridors used by these species to arrive in France. We also observed a different pattern of colonization for each species, which might indicate some between-species differences in their preferences for environmental conditions. The snapshot of the early distributions of these recently established species may hence be used to study the invasion pattern in France in order to manage their potential impact in and outside France

Current velocity shapes co‐existence patterns among invasive Dikerogammarus species

“…The three invasive Dikerogammarus species, D. bispinosus , D. haemobaphes and D. villosus , are also ecologically similar and closely related (Müller, Schramm & Seitz, ). Dikerogammarus villosus and D. haemobaphes have invaded several rivers and canals in recent decades in Central and Western Europe including the British Isles using both the Danube‐Rhine and the Dnieper‐Vistula corridors (Bij de Vaate et al ., ; Grabowski, Jażdżewski & Konopacka, ; Labat, Piscart & Fontan, ; Gallardo & Aldridge, ; Rewicz et al ., ). Dikerogammarus villosus is, however, more successful at colonizing lakes and has a more severe impact on native and other invasive species (reviewed by Rewicz et al ., ).…”

Feeding choice and predation pressure of two invasive gammarids, Gammarus tigrinus and Dikerogammarus villosus, under increasing temperature

“…Although environmental factors are known to play a crucial role in the spread of many non-native invasive species (Leppäkoski et al, 2002;Labat et al, 2011), little is known about their influence on the nature and direction of species' ecological impacts ( Van der Velde et al, 2009). In addition, the strength of ecological impact is a growing concern in the context of current global changes (Bellard et al, 2013), as the resulting changes in environmental conditions (e.g.…”

Potential effects of the invasive ‘killer shrimp’ (Dikerogammarus villosus) on macroinvertebrate assemblages and biomonitoring indices

“…Bioclimatic predictive modelling has shown that almost 60% of Great Britain is suitable for its continued and rapid spread (Gallardo, Errea & Aldridge, 2012) and this British invasion was just the latest range expansion of this species, which is already present in at least 17 European countries. These include the zebra mussel Dreissena polymorpha (Pallas, Vaate et al, 2002;Leuven et al, 2009;Messiaen et al, 2010;Labat, Piscart & Fontan, 2011). These include the zebra mussel Dreissena polymorpha (Pallas, Vaate et al, 2002;Leuven et al, 2009;Messiaen et al, 2010;Labat, Piscart & Fontan, 2011).…”