Interaction between Halobatrachus didactylus and Anguilla anguilla : What happens when these species occur in sympatry?

摘要: The Lusitanian toadfish, Halobatrachus didactylus, and the european eel, Anguilla anguilla, are benthic fish species, which occur in sympatry southern Iberian Peninsula north-west Africa. consequences of this were evaluated through analysis distribution, abundance feeding ecology both species Mira estuary, a small system located on Portugal. A total 1734 toadfish 196 eels caught with beam-trawl six sampling areas covering entire estuary. Both showed burrowing habits high diet overlap. domi- nance voracity includes glass yellow its diet, may contribute to explain spatial segregation between occupying peripheral upstream (freshwater upper estuary) down- stream (Zostera spp. beds near sea). This reduces habitat availability for eels, have seri- ous population already subjected an important loss due anthropogenic causes. If situ- ation results from interaction two it become even more unfavourable because subtropi- cal like spread northward as result raising temperatures caused by climate change. resume. - Interactions entre le poisson crapaud didactylus et anguilla : qu'arrive-t-il quand ces especes sont en sympatrie ?