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

2012 ◽  
Vol 58 (1) ◽  
pp. 171-182 ◽  
Author(s):  
CALUM MACNEIL ◽  
PIETER BOETS ◽  
KOEN LOCK ◽  
PETER L. M. GOETHALS
Keyword(s):  
Dikerogammarus Villosus ◽  
Macroinvertebrate Assemblages

scholarly journals Ontogenetic shift in the trophic role of the invasive killer shrimp Dikerogammarus villosus: a stable isotope study

2021 ◽  
Author(s):  
Francesco Mancini ◽  
Raffaele De Giorgi ◽  
Alessandro Ludovisi ◽  
Salvatrice Vizzini ◽  
Giorgio Mancinelli
Keyword(s):  
Dietary Habits ◽  
Trophic Position ◽  
Ecological Impact ◽  
Central Italy ◽  
Local Conditions ◽  
Dikerogammarus Villosus ◽  
Isotopic Signatures ◽  
Depth Analysis ◽  
Stable Isotope Study ◽  
The Impact

AbstractThe introduction of the amphipod Dikerogammarus villosus in European fresh waters is to date recognized as a threat to the integrity of invaded communities. Predation by D. villosus on native benthic invertebrates is assumed as the key determinant of its ecological impact, yet available information describe the species as a primary consumer as well as a carnivore depending on local conditions. Here, we assessed the trophic position (TP) of D. villosus in Lake Trasimeno, a recently invaded lentic system in central Italy, using the CN isotopic signatures of individuals captured in winter spanning two orders of magnitude in body size. TP estimations were compared with those characterizing the native amphipod Echinogammarus veneris and other representative invertebrate predators. On average, D. villosus showed a trophic position higher than E. veneris, and comparable with that of odonate nymphs. An in-depth analysis revealed that large-sized individuals had a trophic position of 3.07, higher than odonates and close to that of the hirudinean predator Erpobdella octoculata, while small-sized specimens had a trophic position of 2.57, similar to that of E. veneris (2.41). These findings indicate that size-related ontogenetic shifts in dietary habits may per se vary the nature of the interaction between Dikerogammarus villosus and native invertebrates from competition to predation. Information collated from published isotopic studies corroborated the generality of our results. We conclude that intra-specific trophic flexibility may potentially amplify and make more multifaceted the impact of the species on other invertebrate species in invaded food webs.

scholarly journals Mouthparts of the Ponto-Caspian Invader Dikerogammarus Villosus (Amphipoda: Pontogammaridae)

2008 ◽  
Vol 28 (1) ◽  
pp. 1-15 ◽  
Author(s):  
Gerd Mayer ◽  
Dieter Waloszek ◽  
Gerhard Maier ◽  
Andreas Maas
Keyword(s):  
Dikerogammarus Villosus

Dikerogammarus villosus (Sowinsky, 1894) (Crustacea, Amphipoda, Gammaridae) for the first time in Italy

2006 ◽  
Vol 73 (1) ◽  
pp. 97-104 ◽  
Author(s):  
Sandra Casellato ◽  
Giovanni La Piana ◽  
Leonardo Latella ◽  
Sandro Ruffo
Keyword(s):  
Dikerogammarus Villosus ◽  
First Time

Spatial and temporal organization of macroinvertebrate assemblages in a lowland floodplain ecosystem

2014 ◽  
Vol 29 (6) ◽  
pp. 1017-1031 ◽  
Author(s):  
Scott M. Starr ◽  
Jonathan P. Benstead ◽  
Ryan A. Sponseller
Keyword(s):  
Temporal Organization ◽  
Macroinvertebrate Assemblages

scholarly journals Effects of Sublethal Cadmium Exposure on Antipredator Behavioural and Antitoxic Responses in the Invasive Amphipod Dikerogammarus villosus

PLoS ONE ◽  
2012 ◽  
Vol 7 (8) ◽  
pp. e42435 ◽  
Author(s):  
Pascal Sornom ◽  
Eric Gismondi ◽  
Céline Vellinger ◽  
Simon Devin ◽  
Jean-François Férard ◽  
...  
Keyword(s):  
Cadmium Exposure ◽  
Dikerogammarus Villosus ◽  
Invasive Amphipod
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