ICC Monthly Snap: June 2025
IISG ICC
ICC Monthly Snap | June 2025
Dear Invasive Crayfish Collaborators,
Welcome to the June edition of the Monthly Snap! Explore this month’s roundup of crayfish literature and news below.
Literature
Genomic Data Characterize Reproductive Ecology Patterns in Michigan Invasive Red Swamp Crayfish (Procambarus clarkii)
Adams N. E., Homola J. J., Sard N. M., Nathan L. R., Roth B. M., Robinson J. D. & Scribner K. T. (2025). Genomic Data Characterize Reproductive Ecology Patterns in Michigan Invasive Red Swamp Crayfish (Procambarus clarkii). Evolutionary Applications, 17(9), e70007. doi.org/10.1111/eva.70007
Difficult to deal with: attempts for eradication of marbled crayfish from a small urban pond
Buřič, M., Ložek, F., Görner, T., Čuprová, V., Kožený, P., Mojžišová, M., Vlach, P., Štruncová, E., Petrusek, A., Kouba, A. & Svobodová, J. (2025). Difficult to deal with: attempts for eradication of marbled crayfish from a small urban pond. Management of Biological Invasions, 16(2), 443–464. doi.org/10.3391/mbi.2025.16.2.08
Intraspecific Variation in Crayfish Behaviour Alters Stream Ecosystem Functions
Kabalan, B. A., Reisinger, A. J., Pintor, L. M., Scarasso, M., Smyth, A. R. & Reisinger, L. S. (2025). Intraspecific Variation in Crayfish Behaviour Alters Stream Ecosystem Functions. Ecology Letters, 28, e70148. doi.org/10.1111/ele.70148
Genome skimming supports two new crayfish species from the genus Pacifastacus Bott, 1950 (Decapoda: Astacidae)
Larson, E. R., Abbott, C. L., Gilmore, S. R., Helbing, C. C., Lopez, M. L. D., Macintosh, H., Stenhouse, L. M., Williams, B. W. & Usio, N. (2025). Genome skimming supports two new crayfish species from the genus Pacifastacus Bott, 1950 (Decapoda: Astacidae). Zootaxa, 5632 (3), 501–521. doi.org/10.11646/zootaxa.5632.3.4
News
Two online aquatic animal dealers convicted in eight Wisconsin counties
In March and April 2025, two companies based in North Carolina and Indiana were each convicted of 20 citations with penalties related to the shipment of illegal crayfish species to customers in eight Wisconsin counties.
New crayfish curriculum engages students in Great Lakes and local invasive species issues
Crayfish can frequently be found in the role of classroom pet, but as with many school critters, they can pose a threat if they are released into local waters—non-native species can prove to be invasive, pushing out native crayfish. A new curriculum brings that lesson directly to students, and teachers too.
Two newly discovered crayfish species are already at risk
Researchers at the University of Illinois Urbana-Champaign have identified two new species of crayfish in the Pacific Northwest. Long mistaken for the signal crayfish, these two new species, the Okanagan crayfish and misfortunate crayfish, are already highly vulnerable to extinction.
Take action on invasive species this June
Wisconsin DNR declares June as Invasive Species Action Month and calls the public to take simple precautions to avoid spreading invasive species, such as using frozen or locally harvested crayfish for crayfish boils.
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