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Nicothoe astaci : ウィキペディア英語版 | Nicothoe astaci
''Nicothoë astaci'' or the 'lobster louse' is an ectoparasitic copepod that parasitises the gills of the European lobster species ''Homarus gammarus''. The lobster louse was first reported in 1826 by Audoin & Milne-Edwards. ''N. astaci'' has been found on lobsters inhabiting locations including Scotland, Lundy Island in the Bristol Channel and as far south as France and Portugal. The louse possesses a narrow suctorial mouthpart to feed on host haemolymph.〔 Internally, In its adult form, ''Nicothoe'' is barely mobile and most likely remains in the same position for most of its life. The parasite occurs in groups, particularly near the base of the gills, and study has gone into its effects on the lobsters, which are considerably important, commercially. Not much is known about its life cycle, since there are significant gaps in knowledge of certain stages of its growth. ==Description==
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