Cephalopods of the northern Mid-Atlantic Ridge
In: Marine Biology Research. Taylor & Francis: Oslo; Basingstoke. ISSN 1745-1000; e-ISSN 1745-1019, more
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| Keywords |
Distribution
Environments > Aquatic environment > Pelagic environment > Oceanic province > Bathypelagic zone
Environments > Aquatic environment > Pelagic environment > Oceanic province > Mesopelagic zone
Epibenthos
Equipment > Fishery industry equipment > Fishing gear
Species diversity
Trawling
Water > Deep water
Zoogeography
Cephalopoda [WoRMS]
A, Mid-Atlantic Ridge [Marine Regions]
Marine/Coastal |
| Author keywords |
Bathypelagic; deep sea; distribution; epibenthic; mesopelagic; octopods;squids; trawling-gear comparisons; zoogeography |
| Authors | | Top |
- Vecchione, M.
- Young, R.E.
- Piatkowski, U., more
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| Abstract |
A two-leg cruise of R/V G. O. Sars in summer of 2004 along the Mid-Atlantic Ridge explored the diversity and distribution patterns of pelagic and non-hydrothermal bottom communities in the vicinity of the northern Mid-Atlantic Ridge. In total, 1295 cephalopods were caught, representing 56 species. Differences in species composition and size were apparent among the various types of trawls used. The Aakra trawl and bottom trawl caught the largest numbers of species (38 and 34, respectively); size of cephalopods was directly related to the size of the net. Many more species were caught in the southern part of the study area than farther north. The most abundant species was Gonatus steenstrupi, found mostly in the northern part of the study area. A few abundant species, such as Mastigoteuthis agassizii, were found throughout the region, with no clear indication that their northern or southern distributional limits occur within the area sampled. Several benthic and one pelagic species, all taken in small numbers, were captured only in the region of the Charlie Gibbs Fracture Zone. We found many species at very low numbers (i.e. 37 species with <10 specimens in all gear types combined). |
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