One of the piece of information that Michigan Sea Grant tweeted out was that Marmorkrebs have found themselves on another invasive species watch list, this one for the Canadian / American Great Lakes and Saint Lawrence River.
On May 4, 2018, the Great Lakes St. Lawrence Governors & Premiers announced five additions to the list of “least wanted” aquatic invasive species. In 2013, the Governors and Premiers released the first list of 16 “least wanted” aquatic invasive species (AIS) that present a serious threat to the Great Lakes St. Lawrence Basin. Since then, the region’s eight states and two provinces have taken more than 40 actions to prohibit or restrict these high-risk species, including the Asian carp. The new “least wanted” AIS include:
State and provincial AIS and fisheries experts, in conjunction with leading regional researchers, identified these five AIS as posing a high risk of invasion or spread within the region. The Governors and Premiers will take aggressive action and work with regional partners to prevent the spread of these aquatic invaders.
- Tench Tinca tinca
- Marmorkreb (sic) (marbled crayfish) Procambarus fallax forma virginalis
- New Zealand mud snail Potamopyrgus antipodarum
- European frogbit Hydrocharis morsus-ranae
- Yellow floating heart Nymphoides peltata
What’s not clear to me from this statment is what action has been, or might be, taken to try to curb the spread of any of these species. A recent paper I co-authored pointed out (Patoka et al. 2018), the track record of legislation on curbing the movement of aquarium pets is... not great.
External links
Great Lakes St. Lawrence Governors & Premiers Add Five “Least Wanted” AIS
References
Patoka J, Magalhães ALB, Kouba A, Faulkes Z, Jerikho R, Vitule JRS. 2018. Invasive aquatic pets: Failed policies increase risks of harmful invasions. Biodiversity and Conservation 27(11): 3037-3046. https://doi.org/10.1007/s10531-018-1581-3
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