Till sidans topp

Sidansvarig: Webbredaktion
Sidan uppdaterades: 2012-09-11 15:12

Tipsa en vän
Utskriftsversion

Colonization of diatom ag… - Göteborgs universitet Till startsida
Webbkarta
Till innehåll Läs mer om hur kakor används på gu.se

Colonization of diatom aggregates by the dinoflagellate Noctiluca scintillans

Artikel i vetenskaplig tidskrift
Författare Peter Tiselius
T. Kiorboe
Publicerad i Limnology and Oceanography
Volym 43
Nummer/häfte 1
Sidor 154-159
ISSN 0024-3590
Publiceringsår 1998
Publicerad vid Institutionen för marin ekologi
Sidor 154-159
Språk en
Länkar <Go to ISI>://000073694200019
Ämnesord marine snow, phytoplankton, behavior, dynamics, growth
Ämneskategorier Biologiska vetenskaper, Ekologi

Sammanfattning

Abundance and vertical distribution of the dinoflagellate Noctiluca scintillans were studied during a diatom bloom in the Benguela current. Video observations showed the occurrence of abundant Chaetoceros spp. aggregates colonized by N. scintillans. The diatom aggregates were formed by regular coagulation of diatom cells and not by mucus feeding behavior of N. scintillans. N. scintillans can be positively buoyant, and estimates of encounter rates between N. scintillans and diatom aggregates during ascent demonstrates that this mechanism is sufficient to account for the observed colonization. The attached N. scintillans were feeding on the diatoms in the aggregates, as revealed by food-vacuole content. In the particular environment studied, N, scintillans appeared not to depend on aggregate feeding since shipboard experiments showed that clearance rates (10-20 mu l h(-1)) on unaggregated cells were sufficient to account for the high growth rates measured (up to 0.7 d(-1)).

Sidansvarig: Webbredaktion|Sidan uppdaterades: 2012-09-11
Dela:

På Göteborgs universitet använder vi kakor (cookies) för att webbplatsen ska fungera på ett bra sätt för dig. Genom att surfa vidare godkänner du att vi använder kakor.  Vad är kakor?