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Aspects of the Natural History of Pelagic Cephalopods of the Hawaiian Mesopelagic-Boundary Region

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Title:Aspects of the Natural History of Pelagic Cephalopods of the Hawaiian Mesopelagic-Boundary Region
Authors:Young, Richard Edward
Date Issued:Apr 1995
Publisher:University of Hawaii Press
Citation:Young RE. 1995. Aspects of the natural history of pelagic cephalopods of the Hawaiian mesopelagic-boundary region. Pac Sci 49(2): 143-155.
Abstract:Pelagic cephalopods of the mesopelagic-boundary region in
Hawai'i have proven difficult to sample but seem to occupy a variety of habitats
within this zone. Abralia trigonura Berry inhabits the zone only as adults; A.
astrosticta Berry may inhabit the inner boundary zone, and Pterygioteuthis
giardi Fischer appears to be a facultative inhabitant. Three other mesopelagic
species, Liocranchia reinhardti (Steenstrup), Chiroteuthis imperator Chun, and
Iridoteuthis iris (Berry), are probable inhabitants; the latter two are suspected
to be nonvertical migrants. The mesopelagic-boundary region also contains a
variety of other pelagic cephalopods. Some are transients, common species of
the mesopelagic zone in offshore waters such as Abraliopsis spp., neritic species
such as Euprymna scolopes Berry, and oceanic epipelagic species such as
Tremoctopus violaceus Chiaie and Argonauta argo Linnaeus. Others are apparently
permanent but either epipelagic (Onychoteuthis sp. C) or demersal (Nototodarus
hawaiiensis [Berry] and Haliphron atlanticus Steenstrup). Submersible
observations show that Nototodarus hawaiiensis commonly "sits" on the bottom
and Haliphron atlanticus broods its young in the manner of some pelagic
Appears in Collections: Pacific Science Volume 49, Number 2, 1995

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