A long-term rusty crayfish (Orconectes rusticus) invasion: dispersal patterns and community change in a north temperate lake

Rusty crayfish (Orconectes rusticus) were first observed in Trout Lake, Wisconsin, in 1979 and took 19 years to completely disperse around the littoral zone, advancing at an average rate of 0.68 km·year –1 . With the invasion of rusty crayfish, we found that fishes that share prey taxa with crayfish...

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Bibliographic Details
Published in:Canadian journal of fisheries and aquatic sciences 2004-11, Vol.61 (11), p.2255-2266
Main Authors: Wilson, Karen A, Magnuson, John J, Lodge, David M, Hill, Anna M, Kratz, Timothy K, Perry, William L, Willis, Theodore V
Format: Article
Language:English
Subjects:
Amphipoda
Animal and plant ecology
Animal populations
Animal, plant and microbial ecology
Applied ecology
Aquatic ecosystems
Aquatic plants
Biological and medical sciences
Biota
Boats
Diet
Eggs
Exploitation and management of natural biological resources (hunting, fishing and exploited populations survey, etc.)
Fish
Fish diets
Fresh water ecosystems
Freshwater
Fundamental and applied biological sciences. Psychology
Indigenous species
Invasions
Invertebrates
Lakes
Littoral zone
Macroinvertebrates
Nesting
Odonata
Orconectes rusticus
Predation
Prey
Relative abundance
Rocks
Species richness
Synecology
Trichoptera
Water quality
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Summary:Rusty crayfish (Orconectes rusticus) were first observed in Trout Lake, Wisconsin, in 1979 and took 19 years to completely disperse around the littoral zone, advancing at an average rate of 0.68 km·year –1 . With the invasion of rusty crayfish, we found that fishes that share prey taxa with crayfish declined in numbers over time, but piscivorous fish species did not change in abundance. Snails declined from >10 000 to
ISSN:0706-652X
1205-7533
DOI:10.1139/f04-170