Rusty crayfish

Orconectes rusticus
Conservation status
Least Concern (IUCN 3.1) [1]
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Subphylum:	Crustacea
Class:	Malacostraca
Order:	Decapoda
Superfamily:	Astacoidea
Family:	Cambaridae
Genus:	Orconectes
Species:	O. rusticus
Binomial name
Orconectes rusticus (Girard, 1852)

The rusty crayfish, Orconectes rusticus, is a large, aggressive species of freshwater crayfish which is native to the U.S. states of Indiana, Kentucky, Ohio, and Tennessee. Its range is rapidly expanding in North America, displacing native crayfishes in the process:^[2] it is known to have reached New England, Ontario, Illinois, Wisconsin, Michigan, Minnesota, Iowa, Missouri, New Jersey, New York, Pennsylvania, Maryland, and even Manitoba. The rusty crayfish was first captured in Illinois in 1973, and has been collected at over 20 locations in the northern portion of the state.^[3] In 2005, O. rusticus was found for the first time west of the Continental Divide, in the John Day River, Oregon, which drains into the Columbia River.^[4]

Catching & Eating

Rusty crayfish are edible. Many areas that consider them invasive encourage the trapping and eating of these species. Trapping may require a license, so check with your local authorities. Traps are like miniature lobster traps, being a cage with a tapered opening that allows easy entrance but prevents exit. Rusty crayfish may be prepared in the same manner as any other type of crayfish, either by boiling or frying.

References

1. ^ S. Adams, G. A. Schuster & C. A. Taylor (2010). "Orconectes rusticus". IUCN Red List of Threatened Species. Version 3.1. International Union for Conservation of Nature. http://www.iucnredlist.org/apps/redlist/details/153835. Retrieved October 7, 2010. 
2. ^ Jeffrey Gunderson (January 23, 2006). "Rusty crayfish: a nasty invader: biology, identification, and impacts". Minnesota Sea Grant. http://www.seagrant.umn.edu/exotics/rusty.html. 
3. ^ C. Taylor. "Exotic crayfish". Illinois Natural History Survey. http://www.inhs.uiuc.edu/chf/pub/an_report/94_95/CBD.html#crayfish. 
4. ^ Julian D. Olden Jeffrey W. Adams & Eric R. Larson (2009). "First record of Orconectes rusticus (Girard, 1852) (Decapoda, Cambaridae) west of the Great Continental Divide in North America" (PDF). Crustaceana 82 (10): 1347–1351. doi:10.1163/156854009X448934. http://www.fish.washington.edu/research/oldenlab/pdf/2009/Crustaceana_2009.pdf. 

Further reading

• Alan P. Covich‌, Margaret A. Palmer‌ & Todd A. Crowl (1999). "The role of benthic invertebrate species in freshwater ecosystems: zoobenthic species influence energy flows and nutrient cycling". BioScience 49 (2): 119–127. doi:10.1525/bisi.1999.49.2.119. http://caliber.ucpress.net/doi/abs/10.1525/bisi.1999.49.2.119. 
• Julian D. Olden, Julia M. McCarthy, Jeffrey T. Maxted, William W. Fetzer & M. Jake Vander Zanden (2006). "The rapid spread of rusty crayfish (Orconectes rusticus) with observations on native crayfish declines in Wisconsin (U.S.A.) over the past 130 years". Biological Invasions 8 (8): 1621–1628. doi:10.1007/s10530-005-7854-2. 

External links

• Media related to Orconectes rusticus at Wikimedia Commons
• www.invadingspecies.com Partnership between the Ontario Ministry of Natural Resources and the Ontario Federation of Anglers and Hunters
• http://www.crayfishontario.ca/
• http://www.issg.org/database/species/ecology.asp?si=217
• http://animaldiversity.ummz.umich.edu/site/accounts/information/Orconectes_rusticus.html
• Species Profile- Rusty Crayfish (Orconectes rusticus), National Invasive Species Information Center, United States National Agricultural Library

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