Fróðskaparrit - 01.01.2008, Page 163

SNÍKAR í FØROYSKUM KOMBIKKI, CASTEROSTEUS ACULEATUS L
161
terosteus aculeatus is approximately 150
(Barber, 2007). In the freshwater systems in-
vestigated Trichodina spp. and Schistoce-
phaius solidus are the dominant species. In
the marine environment the parasites ap-
pear to be very evenly distributed with the
exception of the nematode Hysterothylacium
aduncum, which was found twice at one ma-
rine locality. However, its low occurrence
does not affect the overall picture of biodi-
versity.
In conclusion Faroese stickleback popu-
lations should offer good possibilites for
future studies while trying to establish the
effect on the host of single parasite species,
like Schistocephalus solidus and Thersitina
gasterostei. Other Faroese islands also remain
to be investigated, especially from an evolu-
tionary point of view.
Acknowledgements.
This work was financed by The Environmen-
tal Fund, Ministery of National Affairs, Far-
oes; The Scientific Fund of Føroya Sparikassi
and the Statoil Faroes Group. The work was
carried out at Faroe Fisheries Laboratory
(Fiskirannsóknarstovan). Regin Christiansen
measured the salinities and important sam-
pling help were obtained from the biologists
Jóhannis Danielsen and Kári Purkhús.
We thank all cooperating persons. The
comments and constructive suggestions of
the referee prof. Pehr H. Enckell are greatly
appreciated.
REFERENCES
Barber, I. 2007. Host-Parastie Interactions of the
Three-Spined Stickleback. Pp. 271-317 in Ost-
lund-Nilsson, S., I. Mayer & F.A. Huntingfor (eds.)
Biology of the Three Spined Stickleback. CRC
Press, Boca Raton, Fla. 392 pp.
Bell, M.A. and Foster, S.A. 1994. Introduction to the
evolutionary biology of the threespine stickle-
back. Pp. 1-27 in Bell, M.A. & S.A. Foster (eds.)
The ívolutionary Biology ofthe Threespine Stickle-
back. Oxford Science Publications. Oxford. 571
pp.
Bristow, C. 1992. On the distribution, ecology and
evolution of Cyrocotyle urna, C. confusa and C.
nybelini (Cercomeromorpha: Gyrocotylidea) and
their hbst Chimaera monstrosa (Holocephalida:
Chimaeridae) in Norwegian waters, with a re-
view of the species question. Sarsia 77:119-124.
Friðriksson, G.B. 2005. A systematic approach to the
geographical variation in the North Atlantic
threespine stickleback, Casterosteus aculeatus
sensu lato (Teleostei: Gasterosteidae). Master
thesis, Stockholm Universtity, Sweden. (84 pp.)
Gibson, D. and Køie, K. 1991. Magnibursatus caudo-
filamentosa (Reimer, 1971) n. Comb. (Digenea:
Derogenidae) from the stickleback Casterostues
aculeatus L. In Danish waters: a zoogeographical
anomaly. Systematic Parasitology 20:221-228.
Joensen, J.S. and Táning, Á.S. 1970. Marine and
Freshwater Fishes. Pp 1-241 in S.Jensen, W. Lund-
back and Th. Mortensen (eds), Zoology of The
faroes LXII-LXIII.A. F. Høst and Son, Copenhagen.
Johansen.J. 1975. Pollen diagramsfrom theShetland
and Faroe Islands. New Phytologist 75:369-387.
Katsiadaki, I. 2007. The use of the Stickleback as a
Sentinel and Model Species in Ecotoxicology. Pp.
319-351 in Ostlund-Nilsson, S., I. Mayer 8< F.A.
Huntingfor (eds.) Biology of the Three-Spined
Stickleback. CRC Press, Boca Raton, Fla. 392 pp.
Marcogliese, D. and Cone, D.K. 1997. Parasite com-
munities as indicators of ecosystem stress. Paras-
sitologia 39: 227-232.
Makinen, H. 2007. Phylogeography and Adaptive
Divergence of Three-spined Stickleback Popula-
tions. PhD-Thesis. University of Helsinki, Finland.