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16143 results in Animal behaviour

Page 156 of 808

  • A new carnivorous sponge, Chondrocladia robertballardi sp. nov. (Porifera: Cladorhizidae) from two north-east Atlantic seamounts

  • J. Cristobo, P. Rios, S.A. Pomponi, J. Xavier
  • Journal:
    Journal of the Marine Biological Association of the United Kingdom / Volume 95 / Issue 7 / November 2015
    Published online by Cambridge University Press:
    23 September 2014, pp. 1345-1352

  • Carnivorous sponges (Porifera: Cladorhizidae) are a particularly interesting group of species typically occurring in deep-sea habitats. In this study a new species, Chondrocladia (Chondrocladia) robertballardi sp. nov., is described from specimens collected on two large north-east Atlantic seamounts – the Gorringe and Galicia Banks – located off the Iberian Peninsula. The holotype, collected on the Gorringe Bank by ROV, is a large, dichotomously branched and stalked sponge with translucent spheres in the middle of secondary axes and a rhizoid basal fixation system. Direct observations on the habit of the new species were made from the ROV. The paratypes, collected on the Galicia Bank by dredge and trawling, are fragments of different sizes. The skeleton is composed of a single class of styles and isochelae. All specimens were collected at similar depths (1400–1738 m) within the upper bathyal, and at the same longitude but separated by 670 km. A synthesis of the geographic as well as bathymetric distribution of this genus is presented. The species is compared with all known species of this genus worldwide.

  • An updated checklist of the marine Decapoda of Ascension Island, central Atlantic Ocean

  • S. De Grave, A. Anker, P.C. Dworschak, P.F. Clark, P. Wirtz
  • Journal:
    Journal of the Marine Biological Association of the United Kingdom / Volume 97 / Issue 4 / June 2017
    Published online by Cambridge University Press:
    23 September 2014, pp. 759-770
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  • The decapod Crustacea from Ascension Island are reported upon on the basis of major expeditions undertaken during 2008 and 2012, including several minor additional collections made in other years. Two species, Gnathophyllum americanum and Corallianassa longiventris are new records for the island bringing the total known marine decapod fauna to 75 species, of which 11 are currently endemic to Ascension Island.

Page 156 of 808