transparent gif


Ej inloggad.

Göteborgs universitets publikationer

The use of sediment slurry culture to search for organisms producing resting stages

Författare och institution:
Agneta Persson (Institutionen för marin ekologi)
Publicerad i:
Hallegraeff, G.M., Blackburn, S.I., Bolch, C.J. & Lewis, R.J. (eds.), Harmful Algal Blooms 2000. – IOC, Paris. Conference proceedings: IXth International Conference on Harmful Algal Blooms, 7-11 February, 2000, Hobart, Tasmania, Australia, s. 191-194
Artikel, refereegranskad vetenskaplig
Sammanfattning (abstract):
Sediment slurries were used successfully in experiments aiming to survey the northern Swedish west coast for dinoflagellate cysts as well as in a pilot study to investigate the presence of phytoplankton resting stages in ballast water and sediment. Untreated aliquots of sediment or concentrated (by filtration) ballast water were cultured using filtered seawater to allow germination of resting stages. The resulting mixed cultures were studied for a period of two weeks and documented directly from the flasks using an inverted microscope. This simple and unselective germination of resting stages proved a very useful complement to a "traditional" dinoflagellate cyst survey or a survey for resting stages in ballast sediment or water. Many organisms appeared in the cultures that were not found as resting stages, probably due to their resting stages being few, small and inconspicous or of unknown appearance. Cultures of sediments from the Swedish west coast contained copepods, rotifers, ciliates (at least 46 types), dinoflagellates (at least 47 species), diatoms (at least 128 species), cyanobacteria, haptophytes, cryptophytes, euglenophytes, prasionophytes, clorophytes and amoebae. Cultures of ballast water and sediment contained mainly cosmopolitan diatom species.
Ämne (baseras på Högskoleverkets indelning av forskningsämnen):
Biologiska vetenskaper
sediment slurry dinoflagellate cyst ciliate diatom ballast water
Postens nummer:
Posten skapad:
2010-02-25 12:19

Visa i Endnote-format

Göteborgs universitet • Tel. 031-786 0000
© Göteborgs universitet 2007