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On the food of the Antarctic sea anemone Urticinopsis antarctica Carlgren, 1927 (Actiniidae, Actiniaria, Anthozoa)

Published online by Cambridge University Press:  22 January 2016

N. Yu. Ivanova  and
S.D. Grebelnyi
N. Yu. Ivanova*
Affiliation:
Saint Petersburg State University, Saint Petersburg, Russia
S.D. Grebelnyi
Affiliation:
Zoological Institute of Russian Academy of Sciences, Saint Petersburg, Russia
*
Correspondence should be addressed to:N. Yu. Ivanova, Saint Petersburg State University, Saint Petersburg, Russia email: [email protected]
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Abstract

The results of an investigation into coelenteron content of the Antarctic sea anemone Urticinopsis antarctica Carlgren, 1927 are presented. Remains of invertebrate animals and fishes were found in the gastrovascular cavity of anemones. Some of them were damaged by digestion and were considered as food items of U. antarctica. These items were molluscs Addamussium colbecki (Smith, 1902), Laevilacunaria pumilia Smith, 1879, Eatoniella caliginosa Smith, 1875 and one not strictly identified gastropod species from the family Rissoidae; a crinoid from the family Comatulida; sea-urchin Sterechinus neumayeri Meissner, 1900; ophiuroid Ophiurolepis brevirima Mortensen, 1936 and a fish Trematomus sp. In contrast to the prey mentioned above, three specimens of amphipods Conicostoma sp. were not destroyed by digestion. They may represent commensals, which live in the gastrovascular cavity of the anemone.

Keywords

AntarcticaUrticinopsis antarcticaprey capturecoelenteron contentdietgeneralist
Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 97 , Issue 1 , February 2017 , pp. 29 - 34
Copyright
Copyright © Marine Biological Association of the United Kingdom 2016 

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