First record of the non-indigenous isopod Ianiropsis serricaudis Gurjanova, 1936 along the French coast of the English Channel

Abstract : Specimens of the NorthWest Pacific Ocean isopod Ianiropsis serricaudis Gurjanova, 1936 were collected for the first time in 2019 from a harbour situated on the Normandy coast in northern France: Le Havre (192 specimens). I. serricaudis was recorded for the first time in Europe in the Netherlands in 2000 and for the first time in France (Arcachon) in 2013, the latter occurrence being due to oyster transfers. Although this species is non-indigenous to Normandy waters, it may have been introduced to France by oyster culture or by the fouling of the hulls of ships navigating between European countries and France.