How Ponto-Caspian invaders affect local parasite communities of native fish

Hohenadler, Michael Andreas Alfred; Nachev, Milen; Freese, Marko; Pohlmann, Jan‐Dag; Hanel, Reinhold; Sures, Bernd

doi:10.1007/s00436-019-06399-3

Cited by 15 publications

(11 citation statements)

References 70 publications

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“…Introduced animals may (i) bring their parasites and transfer them to native hosts (spill-over), intensifying the negative impact on native host populations and changing their parasite communities; (ii) lose all or most of their parasites (enemy release) and obtain an advantage over native species; and (iii) acquire local native parasites and induce a spillback or a dilution effect on native hosts [50,[72][73][74][75][76]. In all the aforementioned scenarios, parasites may affect or even drive the invasion dynamics with repercussions on host and non-host species, and biodiversity in general [77][78][79].…”

Section: Ecological Importance Of Parasitesmentioning

confidence: 99%

“…have been intentionally introduced to improve fish stocks since the 1950s: several cases of these deliberate introductions into freshwaters ecosystems are reported by MacNeil and collaborators [90]. Moreover, exotic amphipods have spread accidentally thanks to passages and distribution pathways (e.g., water ballast, cargo shipping, ship lifts, and canals) provided by anthropogenic actions [79,104]. A famous invader, the killer shrimp, Dikerogammarus villosus, moved from the Ponto-Caspian region, colonizing the main water systems of Western and Central Europe after the inauguration of the Rhine-Main-Danube canal in 1992 [105][106][107].…”

Section: Ecological Role Of Amphipodsmentioning

confidence: 99%

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The Ecological Importance of Amphipod–Parasite Associations for Aquatic Ecosystems

Giari

Fano

Castaldelli

et al. 2020

Water

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Amphipods are a key component of aquatic ecosystems due to their distribution, abundance and ecological role. They also serve as hosts for many micro- and macro-parasites. The importance of parasites and the necessity to include them in ecological studies has been increasingly recognized in the last two decades by ecologists and conservation biologists. Parasites are able to alter survival, growth, feeding, mobility, mating, fecundity and stressors’ response of their amphipod hosts. In addition to their modulating effects on host population size and dynamics, parasites affect community structure and food webs in different ways: by increasing the susceptibility of amphipods to predation, by quantitatively and qualitatively changing the host diet, and by modifying competitive interactions. Human-induced stressors such as climate change, pollution and species introduction that affect host–parasite equilibrium, may enhance or reduce the infection effects on hosts and ecosystems. The present review illustrates the importance of parasites for ecosystem processes using examples from aquatic environments and amphipods as a host group. As seen from the literature, amphipod–parasite systems are likely a key component of ecological processes, but more quantitative data from natural populations and field evidence are necessary to support the results obtained by experimental research.

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Section: Ecological Importance Of Parasitesmentioning

confidence: 99%

Section: Ecological Role Of Amphipodsmentioning

confidence: 99%

The Ecological Importance of Amphipod–Parasite Associations for Aquatic Ecosystems

Giari

Fano

Castaldelli

et al. 2020

Water

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“…The ellipses in the centre and the drawings depict the impact categories as defined by Cucherousset and Olden (2011). References 1: Lindner et al (2013); 2: Janac, Bryja, Ondrackova, Mendel, and Jurajda (2017); 3: Kornis, Carlson, Lehrer‐Brey, and Vander Zanden (2014); 4: McCallum et al (2014); 5: Getchell et al (2013); 6: van Kessel, Dorenbosch, Kranenbarg, van der Velde, and Leuven (2016); 7: Hohenadler et al (2019); 8: Gendron and Marcogliese (2016); 9: Bunnell, Johnson, and Knight (2005); 10: Pagnucco, Remmal, and Ricciardi (2016); 11: Hale et al (2016); 12: Pronin, Fleischer, Baldanova, and Pronina (1997)…”

Section: Resultsmentioning

confidence: 99%

Hobbyists acting simultaneously as anglers and aquarists: Novel pathways for non‐native fish and impacts on native fish

Hirsch

N’Guyen

Burkhardt‐Holm

2021

Aquatic Conservation

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Human translocations of non‐native aquatic species are a global conservation challenge. Aquarists and anglers are two hobbyist groups whose practices are particularly likely to translocate non‐native aquatic species, especially fish. This article aims to stipulate a change of perspective among these hobbyists, who – by acting simultaneously as anglers and aquarists – establish novel pathways for non‐native fish. This study showed that: (i) 51 of 226 respondents to a questionnaire act simultaneously as anglers and aquarists; (ii) 53 of 237 non‐native fish species in the European Union are used for both angling and aquarium hobbies; and (iii) hobbyists write online reports on the catch and exchange of a particularly invasive fish, the round goby (Neogobius melanostomus). This combination of knowledge on how hobbyists use non‐native fish and the ecological impacts of round goby demonstrates how the impact of an invasive species can be influenced by the combined behaviours of anglers and aquarists. We suggest that future research in aquatic conservation should move beyond considering the commercial aquarium trade and angling as separate pathways for translocating non‐native fish, and instead consider these hobbyist groups as interconnected.

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“…The mechanism of the introduction of new parasite species to local hosts through an invasive species, and the resulting increase of prevalence in native host communities is called parasite spillover (e.g. Hohenadler et al, 2019). It has already been observed for example by an examination of the marine parasitic copepod Mytilicola orientalis Mori, 1935, in Northern Europe, which does not only infect its principal host, the invasive Pacific oyster Crassostrea gigas (Thunberg, 1793), but also native blue mussels Mytilus edulis Linné, 1758 and common cockles Cerastoderma edule (Linné, 1758) (Goedknegt et al, 2017).…”

Section: Discussionmentioning

confidence: 99%

The Ponto-Caspian parasite Plagioporus cf. skrjabini reaches the River Rhine system in Central Europe: higher infestation in the native than in the introduced Danubian form of the gastropod Theodoxus fluviatilis

Rothmeier

Sahm

Watermann³

et al. 2021

Hydrobiologia

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The introduction of non-indigenous organisms in new areas in the context of host-parasite interactions is still poorly understood. This study aimed at a parasitological and histopathological comparison of two phylogenetically distinct forms of the freshwater snail Theodoxus fluviatilis in the River Rhine system: the native Northern-European form, which showed a decline for unknown reasons and is nowadays extinct in the River Rhine, and the non-indigenous Danubian form, which was introduced via the Main–Danube canal. We histopathologically examined populations of Northern-European T. fluviatilis from three smaller rivers of the Rhine system and of Danubian T. fluviatilis from the River Rhine, after confirming the phylogenetic background of the respective population genetically. Results showed differences in the prevalence of trematodes and histopathologic organic alterations between the two snail forms. Both were infected with an opecoelid trematode Plagioporus cf. skrjabini, whereby its prevalence was significantly higher in the Northern-European than in the Danubian form. The parasitic trematode is, to our knowledge, a new trematode species in the River Rhine system, presumably co-introduced through the invasion of its second intermediate and final hosts, i.e. Ponto-Caspian amphipods and gobies. Its impact on native populations of Northern-European T. fluviatilis needs to be subject of future studies.

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How Ponto-Caspian invaders affect local parasite communities of native fish

Cited by 15 publications

References 70 publications

The Ecological Importance of Amphipod–Parasite Associations for Aquatic Ecosystems

The Ecological Importance of Amphipod–Parasite Associations for Aquatic Ecosystems

Hobbyists acting simultaneously as anglers and aquarists: Novel pathways for non‐native fish and impacts on native fish

The Ponto-Caspian parasite Plagioporus cf. skrjabini reaches the River Rhine system in Central Europe: higher infestation in the native than in the introduced Danubian form of the gastropod Theodoxus fluviatilis

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