Abraliopsis pacificusKotaro Tsuchiya
A. pacificus distributes from the Northwest Pacific to Hawaiian waters along the southern border of Kuroshio Current and its extension waters. This species is a typical Abraliopsis (Abraliopsis) having scattered photophore arrangement on ventral mantle and head, and carpal flap and distinct aboral keel on club. It resembles A. hoylei, A. pfefferi and A. tui. This group also contains several undescribed species.
- Tentacle clubs
- Two rows of Different-sized hooks on manus.
- Carpal flap and aboral keel distinct.
- Arms IV is relatively long; ALI IV = 62-76.
- Arms with 16 to 25 hooks and 12-25 suckers.
- Hectocotylus (right arm IV) with two different-sized flaps: long, narrow, proximal flap on ventral margin and short, distal flap on dorsal margin.
- Integumental Photophores
- Ventral mantle and head with scattered arrangement of integumental organs.
The A. (Abraliopsis) subgenus with scattered integumental photophore pattern, is a character-less group and its speciation corresponds to each watermass. They are identified by some morphometric or meristic characters such as fin length index, arm length index, hook and sucker count, etc.
This species is distributed from the Northwest Pacific to Hawaiian waters (Tsuchiya, 1993; Young, 1995).
Tsuchiya, K. 1993. Distribution and zoogeography of the family Enoploteuthidae in the Northwest Pacific. In: Okutani, T., O?Dor, R. K. and Kubodera, T. (eds.) 1993. Recent advances in fisheries biology (Tokai University Press. Tokyo). pp. 571-585.
Young, R.E. 1995. Aspects of the natural history of pelagic cephalopods of the Hawaiian mesopelagic-boundary region. Pacific Science, 49:143-155.
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Citing this page:
Tsuchiya, Kotaro. 2009. Abraliopsis pacificus http://tolweb.org/Abraliopsis_pacificus/19690/2009.08.01 in The Tree of Life Web Project, http://tolweb.org/. Version 01 August 2009 (under construction).