Fróðskaparrit - 01.01.2004, Blaðsíða 292

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MARINE WORMS OF THE PHYLUM SIPUNCULA IN FAROESE WATERS
colion strombus (104 stations) and N. lil-
Ijeborgi (44 stations).
The vertical distribution of these species
clearly varied (fíg. 7). It was shown that N.
lilljeborgi mainly inhabits deepwater sites.
All samples were taken at depths of more
than 400 m. Two species, N. minutum and
Ph. strombus, are more eurybathic; 58 % of
the samples were taken at depths less than
400 m.
The cryptobiotic habitat choice of the
more common species, Pli. strombus, was
điscussed. The preferred habitat is hard
bottom inside empty shells of gastropods
and scaphopods. N. lilljeborgi iives free on
the bottom in finer, soft sediments. Some
samples of this species contain more 200
-300 specimens. Distribution of N. minu-
tum has intermediate characteristics: some
of them inhabit scaphopod shells, others
live free without shells. Zoogeographical
distribution of these species in the world’s
oceans follows: Three species: G. vulgaris,
N. minutum and Ph. strombus are cosmo-
politan. Three species: N. abyssorum, N.
lilljeborgi, Ph. tuberculosum are mainly
arctic-boreal. Three species: A. muelleri,
On. steenstrupii and On. squamatum are
boreal-tropicai. One species: N. eremita is
bipolar.
Acknowledgements
We wish to thank the Kaldbak Marine Biological
Laboratory of the Faroe Islands for the opportunity to
study the rich samples of sipunculids collected during the
BIOFAR programme. Dr. Murina is also grateful to Dr.
Mark Solovjev foressential technical help, which made
this manuscript possible. We thank Dmitry Solovjev for
the e-mail communication with Jan Sørensen, and Dr.
Tamara Naidenko-Rogers for the invaluable help.
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