57 results for Faxonius rusticus (Rusty Crayfish)

Page:123
Impact ID Scientific Name Impact Type Study Type Study Location Impact Description Geographic Location Reference
1851 Faxonius rusticus Competition Observational Field Observations show that Faxonius rusticus can diplace Faxonius virilis in its native range, which could be attributed to the propensity for F. rusticus to take place in interspecific mating. 25542
1852 Faxonius rusticus Competition Observational Field Observations show that Faxonius rusticus can diplace Faxonius propinquus where both species are introduced, which could be attributed to the propensity for F. rusticus to take place in interspecific mating. 25542
1853 Faxonius rusticus Competition Observational Field Faxonius rusticus outcompetes native crayfish once it becomes established in a new area. 27348
1854 Faxonius rusticus Competition Observational Field Faxonius rusticus outcompetes native crayfish once it becomes established in a new area. 27348
1855 Faxonius rusticus Competition Experimental Laboratory The presence of Faxonius rusticus reduces the size and increases mortality of Faxonius virilis due to comeptetion for food. 20638
1856 Faxonius rusticus Competition Experimental Laboratory The presence of Faxonius rusticus reduces the size and increases mortality of Faxonius propinquus due to competition for food. 20638
1857 Faxonius rusticus Competition Observational Field Faxonius rusticus hydridizes with Faxonius propinquus in its native range, produce offspring and changing the genetic makeup of the native species, which is ecologically different from F. rusticus; male F. rusticus also outcompete native males for native mates. 13217
1858 Faxonius rusticus Competition Anecdotal Field Since the introduciton of Faxonius rusticus out of its native range results in a reduction and sometimes extirpation of native crayfish that the endangered queensnake (Regina septemvittata) relies on for food, the snake may be affected by the invasion of F. rusticus if the species continues to spread into its range. 30926
1859 Faxonius rusticus Competition Observational Field Faxonius rusticus outcompetes and eliminates Faxonius virilis in some areas of its native range. 26612
7696 Faxonius rusticus Competition Anecdotal N/A F. rusticus have particularly aggressive behaviour, combined with relatively large body and chelae size, they often fight other crayfish, forcing them out of the desirable habitat 42162
7709 Faxonius rusticus Competition Observational Field Faxonius virilis populations declined during the initial phase of rusty crayfish invasion, but persisted over time. Monocacy River, MD 42164
7710 Faxonius rusticus Competition Anecdotal N/A The invasion of Faxonius rusticus has led to the extirpation of F. virilis in many of Canada’s watersheds. Canada 42165
7712 Faxonius rusticus Competition Anecdotal N/A Faxonius rusticus have eliminated Allegheny crayfish, Faxonius obscurus, a native species, from the Sunfish Creek drainage. Sunfish Creek 42165
7716 Faxonius rusticus Competition Anecdotal Field In laboratory studies, F. rusticus adults were not susceptible to predation by M. salmoides and did not alter shelter use when fish were present; even its juveniles were less susceptible to predation than those of the native F. sanbornii as a result of occupying shelters more often than the native juveniles 42166
7717 Faxonius rusticus Competition Anecdotal N/A Dominates F. limosus in shelter competition and aggression trials 42166
8179 Faxonius rusticus Competition Experimental Field discharge levels of stream ecosystems impact the ability of F. rusticus and F. virilis compete with one another - F virilis is more agonistic in intermediate flows. 42169
9331 Faxonius rusticus Competition Observational Field At 5 sites in Illinois, F. rusticus has increased over the last 25 years, while native crayfish species have declined, F. rusticus has also expanded its range over this period, with concomitant decreases in native crayfish at the additional sites likely Illinois 42188
9355 Faxonius rusticus Competition Observational Field Yellow perch shift from feeding on small invertebrates to vertebrates and crayfish as they mature. This diet shift occurs earlier in lakes where F. rusticus is dominant, probably due to competition between F. rusticus and young yellow perch for the smaller invertebrate prey Cass Lake, MN (Bemidji Lake as control) 42192
9356 Faxonius rusticus Competition Experimental Laboratory Faxonius rusticus is replacing Faxonius sanbornii in Ohio streams, the mechanisms responsible are reproductive interference, acting synergistically with differences in aggressive dominance and young-of-year susceptibility to predation. 25540
9357 Faxonius rusticus Competition Observational Field Faxonius rusticus has invaded many northern Wisconsin lakes and displaced both F. virilis and F. propinquus. Trout Lake, Wisconsin 26343
9358 Faxonius rusticus Competition Observational Field Faxonius rusticus occurrences have increased from 7% of all crayfish records collected during the first 20 years of their invasion (1965–1984) to 36% of all records during the last 20 years, and rusty crayfish have replaced the northern clearwater crayfish (F. propinquus) and virile crayfish (F. virilis). Wisconsin 15923
9359 Faxonius rusticus Competition Observational Field Since its introduction 30 years ago, Faxonius rusticus has displaced F. propinquus and F. virilis in many northern Wisconsin lakes. Vilas County, Wisconsin 14612
9360 Faxonius rusticus Competition Experimental Field Faxonius rusticus have replaced the native F. propinquus and invasive F. virilis as the most dominant member of the contemporary crayfish fauna in Wisconsin. F. rusticus outcompetes these species for resources due to their more aggressive nature and larger chela. Trout Lake, Vilas County, Wisconsin, USA 13232
9361 Faxonius rusticus Competition Experimental Field Faxonius rusticus have replaced the native F. propinquus and invasive F. virilis as the most dominant member of the contemporary crayfish fauna in Wisconsin. Size-selection results suggest that fish predation may also hasten the ongoing replacement of F. propinquus by F. rusticus. Trout Lake, Vilas County, Wisconsin, USA 14610
9362 Faxonius rusticus Competition Observational Field Faxonius rusticus have replaced the native F. propinquus and invasive F. virilis as the most dominant member of the contemporary crayfish fauna in Wisconsin. F. rusticus outcompetes these species for resources due to their more aggressive nature and larger chela. Vilas County, Wisconsin 14609
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