The rapid colonization by Crangon crangon (Linnaeus, 1758) (Eucarida, Caridea, Crangonidae) of Icelandic coastal waters

Abstract

[The European brown shrimp, Crangon crangon (L., 1758) has colonized the intertidal zones of Iceland and spread rapidly to many coastal areas. The first confirmed record dates from 2003, and by 2006 the species had colonized the west and south coasts, while not being recorded on the north and east coasts. Densities as high as 6700 animals 100 m−2 were measured. The absence of the brown shrimp from Iceland until recently is interesting in the light of its occurrence in Arctic waters, especially off northern Norway and Russia. It seems most likely that it was brought to Iceland by ballast water. The present records substantially extend the known geographical range of this species. La crevette grise europeenne Crangon crangon (L., 1758) a colonise les zones intertidales d'Islande et s'est etendue rapidement a de nombreuses zones cotieres. Les premieres donnees fiables datent de 2003; Depuis 2006, l'espece a colonise les cotes ouest et sud alors qu'elle est encore absente sur les cotes nord et est. Des densites de 6700 animaux 100 m−2 ont ete mesurees. L'absence de la crevette grise en Irlande jusqu'en des temps recents est interessante a la lumiere de sa presence dans les eaux arctiques, en particulier au large des cotes nord de la Norvege et de la Russie. Il est probable qu'elle a ete apportee en Islande par les eaux de ballast. Les donnees presentes etendent substantiellement la zone de distribution geographique connue de cette espece., The European brown shrimp, Crangon crangon (L., 1758) has colonized the intertidal zones of Iceland and spread rapidly to many coastal areas. The first confirmed record dates from 2003, and by 2006 the species had colonized the west and south coasts, while not being recorded on the north and east coasts. Densities as high as 6700 animals 100 m−2 were measured. The absence of the brown shrimp from Iceland until recently is interesting in the light of its occurrence in Arctic waters, especially off northern Norway and Russia. It seems most likely that it was brought to Iceland by ballast water. The present records substantially extend the known geographical range of this species. La crevette grise europeenne Crangon crangon (L., 1758) a colonise les zones intertidales d'Islande et s'est etendue rapidement a de nombreuses zones cotieres. Les premieres donnees fiables datent de 2003; Depuis 2006, l'espece a colonise les cotes ouest et sud alors qu'elle est encore absente sur les cotes nord et est. Des densites de 6700 animaux 100 m−2 ont ete mesurees. L'absence de la crevette grise en Irlande jusqu'en des temps recents est interessante a la lumiere de sa presence dans les eaux arctiques, en particulier au large des cotes nord de la Norvege et de la Russie. Il est probable qu'elle a ete apportee en Islande par les eaux de ballast. Les donnees presentes etendent substantiellement la zone de distribution geographique connue de cette espece.]