ICC Monthly Snap: April 2025
IISG ICC
ICC Monthly Snap | April 2025
Dear Invasive Crayfish Collaborators,
Welcome to the April edition of the Monthly Snap! Explore this month’s roundup of crayfish literature and news below.
Literature
Intrapopulation differences in biological traits and impacts in a highly invasive freshwater species
Alves, H., Gonçalves, D., Nogueira, A. B., Teixeira, A., Padilha, J., & Sousa, R. (2025). Intrapopulation differences in biological traits and impacts in a highly invasive freshwater species. NeoBiota, 97, 325-349. doi.org/10.3897/neobiota.97.127861
Interdisciplinary Approaches Improve Understanding of Cryptogenic Species: A Historical Case Study of Crayfish in Montana, USA*
Kennedy, H. L. and Adams, S. B. (2025). Interdisciplinary Approaches Improve Understanding of Cryptogenic Species: A Historical Case Study of Crayfish in Montana, USA. WIREs Water, 12, e70014. doi.org/10.1002/wat2.70014 *PDF Attached
Performance of alternative methods for generating species distribution models for invasive species in the Laurentian Great Lakes
Prescott, V. A., Marte, J., & Keller, R. P. (2025). Performance of alternative methods for generating species distribution models for invasive species in the Laurentian Great Lakes. Fisheries, vuaf012. doi.org/10.1093/fshmag/vuaf012
Influence of warming on the functional responses of invasive omnivores, Procambarus crayfishes
Sheppard, N. L. M. and Ricciardi, A. (2025). Influence of warming on the functional responses of invasive omnivores, Procambarus crayfishes. Canadian Journal of Fisheries and Aquatic Sciences. doi.org/10.1139/cjfas-2024-0334 , cdnsciencepub.com/doi/abs/10.1139/cjfas-2024-0334
Effects of temperature on marbled crayfish (Procambarus virginalis, Lyko 2017) invasion ecology
Teesalu, P., Muuga, J. M., Hurt, M., Kaldre, K., Noges, T., & Ercoli, F. (2025). Effects of temperature on marbled crayfish (Procambarus virginalis, Lyko 2017) invasion ecology. Hydrobiologia. doi.org/10.1007/s10750-025-05828-y
News
Free AIS Monitoring Workshop in Washburn County, Wisconsin
The Washburn County Land and Water Conservation Department is hosting a free Aquatic Invasive Species monitoring workshop on May 9 from 5pm to 7pm at Washburn County Services Center. To register, contact Lisa Burns at lbu...@co.washburn.wi.us.
Invasive crayfish native to U.S. found in Ontario waters
Invasive red swamp crayfish were discovered in Ontario waters last fall, prompting wildlife officials to implement mitigation strategies. Officials advise against consuming these crayfish as it could inadvertently encourage their spread to other provincial waterways.
Rusty crayfish monitored in various Pennsylvania waterways
The Pennsylvania Fish and Boat Commission is actively monitoring rusty crayfish invasions across the state. Community members can assist conservation efforts by reporting sightings through the Commission’s official website.
Updated Ontario crayfish guide now features enhanced identification tools
The second edition of the Guide to Ontario Crayfishes, developed by the OFAH Foundation and the Ontario Ministry of Natural Resources’ Invading Species Awareness Program, now includes a new section on rostrums and areolas–two key features that aid in accurate species identification.
Illinois RiverWatch Crayfish Volunteering Online Video
A new training video teaches volunteers how to participate in Illinois Crayfish Finders, a RiverWatch community science program dedicated to mapping crayfish in Illinois. The video provides background on the importance of crayfish, proper collection techniques, and how to submit photos to their project on iNaturalist.
This selection of invasive crayfish information is collected by the Invasive Crayfish Collaborative, a program convened and facilitated by Illinois-Indiana Sea Grant and the Illinois Natural History Survey with funding from the Great Lakes Restoration Initiative.
© 2025 Illinois-Indiana Sea Grant // EA/EOU