We are studying the potential impacts of invasive crayfish on native crayfish in Virginia, USA. At the moment, we are trying to find more information on confirmed occurrences of following invasive crayfish species in Virginia. If you know any reliable locations please let us know. Any other invasive species occurrences would be highly appreciated too. Thanks.
1. Red swamp crayfish (Procambarus clarkii)
2. Virile crayfish (Orconectes virilis)
3. Rusty crayfish (Orconectes rusticus)
Dear Sujan,
Yes, there are georeferenced and nongeoreferenced species occurrence records for Procambarus clarkii (2 records) and Orconectes virilis (2 records) in the state of Virginia, available for download from the US Geological Survey's Biodiversity Information Serving Our Nation (BISON - http://bison.usgs.ornl.gov) online species occurrence mapping system. Use the Refine Your Search panel to narrow your search down to only include records for Virginia. BISON does contain records for Orconectes rusticus but none occur in Virginia. Consider also searching BISON for occurrence records for other introduced crayfish species as well as for species that are impacted by introduced crayfish.
Best regards, Liz
Have a look at the BISON website. You can get this information there.
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