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Distribution of deep-water benthic and bentho-pelagic cephalopods from the north-east Atlantic
Collins, M.A.; Yau, C.; Allcock, L.; Thurston, M.H. (2001). Distribution of deep-water benthic and bentho-pelagic cephalopods from the north-east Atlantic. J. Mar. Biol. Ass. U.K. 81: 105-117
In: Journal of the Marine Biological Association of the United Kingdom. Cambridge University Press/Marine Biological Association of the United Kingdom: Cambridge. ISSN 0025-3154, more
Peer reviewed article  

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Keyword
    Marine

Authors  Top 
  • Collins, M.A.
  • Yau, C.
  • Allcock, L.
  • Thurston, M.H.

Abstract
    The distribution of deep-water (150-4850 m) benthic and bentho-pelagic cephalopods in the north-east Atlantic is described, based on 592 specimens collected from commercial and research trawling. Thirty-six different species of cephalopod belonging to 14 families were identified, though problems remain with the taxonomy of some of the octopod genera. At the shallower depths (150-500 m) sepiolids were the most abundant group with five species identified. Sepiola atlantica, Sepietta oweniana and Rondeletiola minor were restricted to the shallow depths (300m), but Neorossia caroli (400-1535m) and Rossia macrosoma (205-515 m) extended into deeper water. The squids Todaropsis eblanae and Loligo forbesi were also common in shallow areas (<250 m). Among the incirrate octopods, Eledone cirrhosa was found at depths of 208-490 m. Three putative species of Benthoctopus and two of Bathypolypus were identified occupying depths of 250-2700 m. Graneledone verrucosa was caught at depths of 1785-2095 m. Cirrate octopods dominated the cephalopod catch from the deeper areas, with Opisthoteuthis massyae occurring from 877 to 1398 m, O. grimaldii from 2165 to 2287 m, Stauroteuthis syrtensis from 1425 to 3100 m, Cirroteuthis muelleri from 700 to 4854 m, Cirrothauma murrayi from 2430 to 4850 m and Grimpoteuthis (five putative species) from 1775 to 4877 m. Abundance estimates of the more frequently caught species were calculated from swept areas of trawls and sledges in the Porcupine Seabight and on the Porcupine Abyssal Plain.

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