Dutch daily Leidsch Dagblad reports that on 21 November a blue crab was caught in the Waddenzee.
This is originally a North American brackish water species, not indigenous and very rare in European waters.
Sometimes, larvae come along with trans Atlantic ships.
These larvae can grow here, but cannot get offspring, as they need over 20 degrees centigrade water for that.
The fisher who caught it brought it alive to a nature center.
It was a male, as it has blue pincer extremities, while females have red extremities.
Environmental threats to blue crabs: here.
Widespread adoption by dairy farmers of injecting manure into the soil instead of spreading it on the surface could be crucial to restoring Chesapeake Bay water quality, according to researchers who compared phosphorus runoff from fields treated by both methods. However, they predict it will be difficult to persuade farmers to change practices: here.
Oceana’s latest report reveals mislabeling of iconic Chesapeake Bay blue crab: here.
Scientists from the University of Maryland Center for Environmental Science are predicting that warmer winters in the Chesapeake Bay will likely lead to longer and more productive seasons for Maryland’s favorite summer crustacean, the blue crab: here.