scholarly journals Invader–invader interactions in relation to environmental heterogeneity leads to zonation of two invasive amphipods, Dikerogammarus villosus (Sowinsky) and Gammarus tigrinus Sexton: amphipod pilot species project (AMPIS) report 6

2009 ◽  
Vol 11 (9) ◽  
pp. 2085-2093 ◽  
Author(s):  
Dirk Platvoet ◽  
Jaimie T. A. Dick ◽  
Calum MacNeil ◽  
Mariëlle C. van Riel ◽  
Gerard van der Velde
Keyword(s):  
Environmental Heterogeneity ◽  
Gammarus Tigrinus ◽  
Dikerogammarus Villosus ◽  
Invasive Amphipods

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

Hydrobiologia ◽  
2015 ◽  
Vol 781 (1) ◽  
pp. 43-54 ◽  
Author(s):  
Laura Pellan ◽  
Vincent Médoc ◽  
David Renault ◽  
Thierry Spataro ◽  
Christophe Piscart
Keyword(s):  
Predation Pressure ◽  
Gammarus Tigrinus ◽  
Dikerogammarus Villosus ◽  
Feeding Choice ◽  
Increasing Temperature

Echinogammarus trichiatus (Martynov, 1932) — a new Ponto-Caspian amphipod invader in Poland with remarks on other alien amphipods from the Oder River

Crustaceana ◽  
2013 ◽  
Vol 86 (10) ◽  
pp. 1224-1233 ◽  
Author(s):  
Michał Rachalewski ◽  
Alicja Konopacka ◽  
Michał Grabowski ◽  
Karolina Bącela-Spychalska
Keyword(s):  
Invasive Species ◽  
Canal System ◽  
Gammarus Tigrinus ◽  
Dikerogammarus Villosus ◽  
Pontogammarus Robustoides ◽  
Oder River ◽  
First Time

Echinogammarus trichiatus (Martynov, 1932), was recorded for the first time in Poland, in the lower Oder River, in September 2012. The species has most probably reached the Oder through the Havel-Oder Canal, being a part of the German inland canal system in which it has been already present since 2006. We found individuals of both sexes, including ovigerous females and juveniles. The structure of its population and its abundance (second dominant gammarid species on the site) suggests that it is well established and, thus, we may expect further invasion of the species into Polish waters. Six other invasive species of amphipods were recorded along the course of the Oder. Four of them, Dikerogammarus villosus, D. haemobaphes, Gammarus tigrinus and Chelicorophium curvispinum, occurred in the entire studied section of the river. Two, Pontogammarus robustoides and Obesogammarus crassus, were found only in the lowest part of the Oder.

scholarly journals Options for the control of Dikerogammarus villosus (killer shrimp) and other invasive amphipods

2021 ◽  
Vol 12 (3) ◽  
pp. 662-684
Author(s):  
Louisa Wood ◽  
Emily Smith ◽  
Jamie Bojko ◽  
Paul Stebbing
Keyword(s):  
Dikerogammarus Villosus ◽  
Invasive Amphipods

scholarly journals What doesn’t kill you doesn’t make you stronger: Parasites modify interference competition between two invasive amphipods

NeoBiota ◽  
2021 ◽  
Vol 69 ◽  
pp. 51-74
Author(s):  
Jarosław Kobak ◽  
Michał Rachalewski ◽  
Karolina Bącela-Spychalska
Keyword(s):  
Biological Invasions ◽  
Interspecific Interactions ◽  
Interference Competition ◽  
Dikerogammarus Villosus ◽  
Heterospecific Male ◽  
Invasive Amphipods ◽  
Cucumispora Dikerogammari ◽  
Dikerogammarus Haemobaphes

We used a freshwater amphipod-microsporidian model (Ponto-Caspian hosts: Dikerogammarus villosus and D. haemobaphes, parasite: Cucumispora dikerogammari) to check whether parasites affect biological invasions by modulating behaviour and intra- and interspecific interactions between the invaders. We tested competition for shelter in conspecific and heterospecific male pairs (one or both individuals infected or non-infected). In general, amphipods of both species increased their shelter occupancy time when accompanied by infected rather than non-infected conspecifics and heterospecifics. Infected amphipods faced lower aggression from non-infected conspecifics. Moreover, D. villosus was more aggressive than D. haemobaphes and more aggressive towards conspecifics vs. heterospecifics. In summary, infection reduced the intra- and interspecific competitivity of amphipods, which became less capable of defending their shelters, despite their unchanged need for shelter occupancy. Dikerogammarus haemobaphes, commonly considered as a weaker competitor, displaced by D. villosus from co-occupied locations, was able to compete efficiently for the shelter with D. villosus when microsporidian infections appeared on the scene. This suggests that parasites may be important mediators of biological invasions, facilitating the existence of large intra- and interspecific assemblages of invasive alien amphipods.

scholarly journals Superior predatory ability and abundance predicts potential ecological impact towards early-stage anurans by invasive ‘Killer Shrimp’ (Dikerogammarus villosus)

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Daniel A. Warren ◽  
Stephanie J. Bradbeer ◽  
Alison M. Dunn
Keyword(s):  
Body Size ◽  
Native Species ◽  
Western Europe ◽  
Rana Temporaria ◽  
Early Stage ◽  
Ecological Impact ◽  
Feeding Rates ◽  
Dikerogammarus Villosus ◽  
Invasive Amphipods ◽  
Near Future

AbstractInvasive alien species negatively impact upon biodiversity and generate significant economic costs worldwide. Globally, amphibians have suffered considerable losses, with a key driver being predation by large invasive invertebrate and vertebrate predators. However, there is no research regarding the potential ecological impact of small invertebrate invaders. The invasive freshwater amphipod Dikerogammarus villosus can act as a top predator capable of displacing native amphipods and preying heavily upon a range of native species. Listed as one of Europe’s top 100 worst invaders, D. villosus has significantly restructured freshwater communities across western Europe and is expected to invade North America in the near future. Here we explore the ecological impact of invasive D. villosus upon UK native and invasive amphibians (Rana temporaria and Xenopus laevis respectively) using the “Relative Impact Potential” (RIP) metric. By combining estimations of per capita effects (i.e. functional response; FR) and relative field abundances, we apply the RIP metric to quantify the potential ecological impact of invasive D. villosus upon embryonic and larval amphibian prey, compared to the native amphipod Gammarus pulex. Both native and invasive amphipods consumed early-stage amphibians and exhibited potentially destabilising Type II FRs. However, larger body size in invasive D. villosus translated into a superior FR through significantly lower handling times and subsequently higher maximum feeding rates—up to seven times greater than native G. pulex. Higher invader abundance also drove elevated RIP scores for invasive D. villosus, with potential impact scores predicted up to 15.4 times greater than native G. pulex. Overall, D. villosus is predicted to have a greater predatory impact upon amphibian populations than G. pulex, due primarily to its larger body size and superior field abundance, potentially reducing amphibian recruitment within invaded regions.

Environmental Heterogeneity, Genetic Polymorphism, and Reproductive Strategies

1981 ◽  
Vol 118 (1) ◽  
pp. 129-134 ◽  
Author(s):  
M. J. McLeod ◽  
D. J. Hornbach ◽  
S. I. Guttman ◽  
C. M. Way ◽  
A. J. Burky
Keyword(s):  
Genetic Polymorphism ◽  
Reproductive Strategies ◽  
Environmental Heterogeneity
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