Colony growth and evidence for colony multiplication in Phaeocystis pouchetii (Prymnesiophyceae) isolated from mesocosm blooms
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چکیده
منابع مشابه
Colony Size of Phaeocystis Antarctica (prymnesiophyceae) as Influenced by Zooplankton Grazers(1).
The haptophyte Phaeocystis antarctica G. Karst. is a dominant phytoplankton species in the Ross Sea, Antarctica, and exists as solitary cells and mucilaginous colonies that differ by several orders of magnitude in size. Recent studies with Phaeocystis globosa suggest that colony formation and enlargement are defense mechanisms against small grazers. To test if a similar grazer-induced morpholog...
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Mass sedimentation of gelatinous rolonies of the prymensiophyte Phaeocystis pouchetii were observed In the upper !00 m of Atlantic v> ater in the central Barents Sea. Sedimentation rates of paniculate organic carbon and nitrogen as weCl as pigments were the highest recorded so far from oceanic environments of the North Atlantic or coastal areas of Norway. High relative concentrations of phytopl...
متن کاملLymphokine(s) from isolated T lymphocyte subpopulations support multilineage hematopoietic colony and megakaryocytic colony formation.
Conditioned medium derived from peripheral mononuclear low-density cells stimulated with phytohemagglutinin (PHA) supports the growth of noncommitted hematopoietic progenitors from marrow and peripheral blood cells. These immature progenitors (CFU-GEMM) can be identified in culture as multilineage hematopoietic colonies containing erythroblasts, eosinophilic, basophilic and neutrophilic granulo...
متن کاملSurvival and recovery of Phaeocystis antarctica (Prymnesiophyceae) from prolonged darkness and freezing.
The colony-forming haptophyte Phaeocystis antarctica is an important primary producer in the Ross Sea, and must survive long periods of darkness and freezing temperature in this extreme environment. We conducted experiments on the responses of P. antarctica-dominated phytoplankton assemblages to prolonged periods of darkness and freezing. Chlorophyll and photosynthetic capacity of the alga decl...
متن کاملPhaeocystis blooms in the global ocean and their controlling mechanisms: a review
Phaeocystis is a genus of marine phytoplankton with a world-wide distribution. It has a polymorphic life cycle alternating free-living cells and colonies but develops massive blooms under the colony form in nutrient (major)-enriched areas (mostly nitrates) of the global ocean. Among the 6 species, only 3 (P. pouchetii, P. antarctica, P. globosa) have been reported as blooming species. However i...
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ژورنال
عنوان ژورنال: Journal of Plankton Research
سال: 2005
ISSN: 1464-3774,0142-7873
DOI: 10.1093/plankt/fbi026