In the majority of the occasions, when a determinate animal species invades a distinct ecosystem to the his, finish producing natural losses truly worrisome, and this case is not distinct.
A species of crab of the atlantic coast of North America designated “Dyspanopeus sayi” has gone in in diverse places of Europe as in the Black Sea, Adriatic, Holland, United Kingdom and France, establishing also in the last years in the Mediterranean western.
In the last report has detected the existence of this species in the Delta of the Ebro, including male and females that reproduce without problems, since they find sufficiently established.
Guillermo Guerao, coautor of the study and researcher in the IRTA (Institute of Investigation and Technology Agroalimentarias) considers that his arrival across the pond has not been mere coincidence, but it has to have produced by means of some maritime transport or because of commercial exchanges.
This variety of crab represents an important problem for the autochthonous fauna, since it treats of a species that can adapt very well to the changes so much of salinity as of temperature. The only good news is that it does not live in freshwaters, by what this sector finds protected.
His feeding bases fundamentally in molluscs like the mussels and the clams, and although it still has not detected a significant decrease of these, still are determinate earrings studies that show the low risk.
Nevertheless, in other locations as in the Adriatic sea has arrived to exterminate of local form some of the autochthonous species like the mussel and the oyster, by what boasts that it could arrive to cause the same damage in the Delta of the Ebro.
Waiting for these studies, the society in general finds concerned by what could represent, so much for the nature as for the economy, the fact that they follow reproducing and increase his quantity.