The highly invasive Chinese mitten crab Eriocheir sinensis in the Tagus Estuary, Portugal:morphology of the specimens 20 years after the first captures

摘要

Eriocheir sinensis is an invasive species that spread in European waters as the result of human activity. The captures from the Portuguese population took place in September 2013 in the Tagus Estuary and were dominated by the medium-sized individuals at the beginning of their reproducing cycle (n=192).