Neumann, Viola (2007) Biologische Untersuchungen zur Cephalopoden-Fauna von Grönland. (Diploma thesis), Christian-Albrechts-Universität zu Kiel, Kiel, Germany, 115 pp.

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Abstract

Between the years 2003 - 2006, a total of 247 cephalopod specimens were collected by means of bottom trawling from depths between O and 600 m in the waters around East-, South- and West Greenland. In addition to the known resident Arctic cephalopods Teuthowenia mega/ops, Cirroteuthis mulleri, the sepiolids Rossia moelleri, Rossia palpebrosa, Rossia megaptera, the boreoatlantic armhook squid Gonatus fabricii, the spoonarm octopus Bathypolypus bairdii, Bathypolypus arcticus and Bathypolypus pugniger, three species were reported in this area for the first time: Mastigoteuthis agassizi were encountered east, Todarodes sagittatus and Brachioteuthis riisei west of Greenland. The most abundant species was Rossia moelleri, followed by Gonatus fabricii and Bathypolypus bairdii. New information was gathered about horizontal and vertical distribution of the most common cephalopods, as well as data on their population structure and reproductive biology. Further, this study provides new relationships of beak size to mantle length and body mass for the most common species. Additional hydrographical measurements of ambient temperature and salinity above the bottom were sampled in these areas in order to discuss distributional characteristics of the newly found cephalopod species. This document also provides a maturity scale for the cephalopods Rossia and Bathypolypus, which are common in this area.

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