Crayfish

Rusty Crayfish (Orconectes rusticus) – Photo courtesy of Jeff Gunderson

Maine is now home to several non-native crayfish species. Of those species known to be from ‘away’, two are considered by state experts to pose the greatest threat to native ecosystems: rusty crayfish (Orconectes rusticus) and red swamp crayfish (Procambarus clarkii). Working in concert with a team of researchers, the LSM is looking for volunteers to help determine the statewide distribution of these and other crayfish species. The protocols for collecting, preserving and submitting crayfish specimens is provided below. Participants will receive a loaner crayfish trap and additional technical assistance. If you are interested in participating in this important program please sign up here!

Resources for Crayfish Monitors:

• Invasive Crayfish Impact on Maine Ecosystems
• Crayfish Monitoring Protocol
• Determining if your Crayfish is Male or Female
• Crayfish Sample Labels
• Maine Crayfish Project Online Reporting Form

NEW!! Reporting your findings has never been simpler!

Please help us capture your findings and incorporate them into Maine’s growing statewide database, by completing this simple online questionnaire.