Distribution of the Neoteuthid Squid Alluroteuthis Antarcticus Odhner in the Atlantic Sector of the Southern Ocean

• Main Author: Rodhouse, Paul G.
• Format: Article in Journal/Newspaper
• Language: English
• Published: 1988
• Subjects: Antarctic; Southern Ocean; The Antarctic; Antarc*; antarcticus
• Online Access: https://oceanrep.geomar.de/id/eprint/34432/; https://oceanrep.geomar.de/id/eprint/34432/1/Rodhouse%20%28002%29.pdf

The "Discovery" collections contain 51 specimens ot Alluroteuthis antarct,cus from the Southern Ocean 0'"-30°E, S of the Antarctic Polar Front. Of these, 45 specimens were caught during "Discovery" Cruise 100 with the open1ng-clos1ng "RMT 8" net. Capture rate of the species was highest in the 800-900 m depth layer. At night. Alluroteuthis appears to spread vertically and there is evidence of ontogenetic descent. When vertical distribution of A. antarcticus is plotted as a tunclion of mantle length and compared with the distribution of the cranchi1d Galiteuthis glac,alis apparently there is spacial separation between the two species in the water column. The degree of ecological separation cannot be determined in the absence of information on the trophic ecology of these squids.