24 results for Potamopyrgus antipodarum (New Zealand mudsnail)

Impact ID Scientific Name Impact Type Study Type Study Location Impact Description Geographic Location Reference
2034 Potamopyrgus antipodarum Competition Observational Field The dense colonization of Potamopyrgus antipodarum in streams has been linked to the decline in native macroinvertebrate densities. 17665
2039 Potamopyrgus antipodarum Competition Observational Field Potamopyrgus antipodarum in the Snake River Basin (Idaho, USA) were found in high densities and outnumbered the native snails in three different habitats. 13759
2040 Potamopyrgus antipodarum Competition Anecdotal Field Potamopyrgus antipodarum in the Snake River Basin (Idaho, USA) were found in high densities and outnumbered native snails in three different habitats, possibly out competing the native threatened Hydrobiid T. serpenticola. 13759
2042 Potamopyrgus antipodarum Competition Anecdotal Field Researchers noticed a negative/inverse relationship with the presence of Potamopyrgus antipodarum and that of native Hydrobiid snails. 9400
2043 Potamopyrgus antipodarum Competition Experimental Field Taylorconcha serpenticola, a U.S. native, federally threatened snail, decreased in density in habitats that had high densities of Potamopyrgus antipodarum. 24682
2044 Potamopyrgus antipodarum Competition Experimental Field Potamopyrgus antipodarum in high enough densities impeded the growth rate of the U.S. native, federally threatened snail, Taylorconcha serpenticola. 24682
2046 Potamopyrgus antipodarum Competition Observational Field Where Potamopyrgus antipodarum occurred in high densities, there was a decrease in gastropod diversity. 33534
2047 Potamopyrgus antipodarum Competition Experimental Field Potamopyrgus antipodarum has become the most common snail present in areas of the Snake River, and the dominant gastropod species in many habitat types. 9286
2053 Potamopyrgus antipodarum Competition Experimental Laboratory Potamopyrgus antipodarum limits the growth rate and absolute growth of the endangered desert valvata snail, Valvata utahensis, both of which occur in the Snake River. 33550
2054 Potamopyrgus antipodarum Competition Observational Field In the Mont Saint-Michel Bay system of France, Potamopyrgus antipodarum altered the gastropod richness, making up over 80% of gastropods. 15798
2058 Potamopyrgus antipodarum Competition Observational Field Potamopyrgus antipodarum limited the growth of Pyrgulopsis robusta and became dominant in many habitats. Interestingly, analysis indicated that both species consumed similar amounts of algal resources, discrediting resource acquisition ability as a mechanism for interspecific competition. The authors suggest that adverse impacts on P. robusta could stem from lower maintenance costs or more efficient resource conversion within P. antipodarum. Yellowstone National Park, USA 24683
7371 Potamopyrgus antipodarum Competition Observational Field In human-created lentic habitats in Poland, Potamopyrgus antipodarum invaded waters had lower native gastropod density than uninvaded waters. Poland 42289
7372 Potamopyrgus antipodarum Competition Observational Field Potamopyrgus antipodarum can monopolize the benthic substrate, thereby interfering with the space that is required by some macroinvertebrates to feed. 42289
7373 Potamopyrgus antipodarum Competition Anecdotal N/A The dietary requirements of Potamopyrgus antipodarum suggest that it can probably compete with native snails because P. antipodarum is primarily a grazer on benthic periphyton and detritus. 42289
7374 Potamopyrgus antipodarum Competition Observational Field In human-created lentic habitats in Poland, Potamopyrgus antipodarum invaded waters had lower native gastropod diversity than uninvaded waters. Poland 42289
7729 Potamopyrgus antipodarum Competition Anecdotal N/A Potamopyrgus antipodarum can compete with native fish by consuming up to half of their food including caddisfly larvae, mayfly larvae, and chironomids. 42479
7730 Potamopyrgus antipodarum Competition Anecdotal N/A Potamopyrgus antipodarum can consume up to half of food resources in a waterway which can reduce populations of invertebrates such as caddisflies and mayflies. 42480
8302 Potamopyrgus antipodarum Competition Observational Field In one Australian stream, increasing densities of New Zealand mudsnail (Potamopyrgus antipodarum) were positively correlated with density and species richness of native invertebrates, possibly due to coprophagy (ingestion of the snail's feces). Australia 22919
8303 Potamopyrgus antipodarum Competition Experimental Field A colonization experiment in Yellowstone National Park found a negative relationship between the abundance of New Zealand mudsnail (Potamopyrgus antipodarum) colonizers and native macroinvertebrate colonizers on stone tiles placed in several rivers, suggesting that P. antipodarum may interfere with the colonization activity of native species. However, across sites, significant negative correlations between the densities of P. antipodarum and native macroinvertebrate densities, and overall impacts in this area remain largely unknown. Yellowstone National Park 17665
8304 Potamopyrgus antipodarum Competition Experimental Laboratory Stable isotope analysis indicated that the diet of the New Zealand mudsnail (Potamopyrgus antipodarum) overlaps with the diets of coexisting native invertebrates in the Columbia River Estuary. However, the authors also found that P. antipodarum foraging was decreased in the presence of native Gnorimosphaeroma insulare, while foraging of G. insulare was unaffected by interspecific competition. Columbia River Estuary 24663
8305 Potamopyrgus antipodarum Competition Observational Field No impact was found on native species biomass following the invasion of New Zealand mudsnail (Potamopyrgus antipodarum) in Glen Canyon of the Colorado River. Glen Canyon, Colorado River 24666
8306 Potamopyrgus antipodarum Competition Observational Field In contrast, field surveys below the Flaming Gorge Dam documented an overall decrease in total invertebrate abundance following the invasion of the New Zealand mudsnail (Potamopyrgus antipodarum). Interestingly, some invertebrate groups that were not affected by P. antipodarum overall were reduced in the presence of P. antipodarum in certain habitats (e.g., amphipods in eddies and mayflies in runs/riffles). Flaming Gorge Dam, Utah 19767
8307 Potamopyrgus antipodarum Competition Experimental Laboratory In an enclosure competition experiment in Branbury Springs, ID, competitive interactions likely have adverse effects on growth rates of a threatened native snail, Taylorconcha serpenticola, at New Zealand mudsnail (Potamopyrgus antipodarum) densities above 4,000 m-2. Ranbury Springs, ID 24682
9244 Potamopyrgus antipodarum Competition Anecdotal N/A Potamopyrgus antipodarum outcompetes and physically crowds native species. 42717

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