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Pyroteuthis addolux : ウィキペディア英語版 | Pyroteuthis addolux
''Pyroteuthis addolux'' is a species of squid in the family Pyroteuthidae. It is distinguished from other members of the genus ''Pyroteuthis'' by the shape of photophores on the tentacles and the shape of the hectocotylus. The hectocotylus is located on arm IV, containing 10 proximity hooks, and six to 15 suckers at the tip. ''P. addolux'' ranges from south of the Hawaiian Islands, to the subantarctic boundary. They exhibit minor geographical variance, as southern specimens are slightly smaller than their northern counterparts. ''P. addolux'' is the only member of the genus to occur in the North Pacific, but additional members of the family Pyroteuthidae have also been found.〔Richard Brodeur and Orio Yamamura. 2005. (MICRONEKTON OF THE NORTH PACIFIC ), North Pacific Marine Science Organisation (PICES): pg21.〕 The species has been observed using bioluminescence to reduce its silhouette in dim surrounding light. ==References==
*(Tree of Life web project: ''Pyroteuthis addolux'' )
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