Suppression of dinoflagellate Peridinium bipes bloom in a mesocosm by ultraviolet radiation
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چکیده
منابع مشابه
suppression of coke formation in thermal cracking by coke inhibitors
the main purpose of this research was to:1.develop a coking model for thermal cracking of naphtha.2.study coke inhibition methods using different coke inhibitors.developing a coking model in naphtha cracking reactors requires a suitable model of the thermal cracking reactor based on a reliable kinetic model.to obtain reliable results all these models shall be solved simultaneously.for this pu...
15 صفحه اولPhotoorientation, motility and pigmentation in a freshwater peridinium affected by ultraviolet radiation.
The effects of ultraviolet radiation on orientation, motility and pigmentation were measured in the freshwater dinoflagellate, Peridinium gatunense. Histograms of the positive phototactically oriented cells showed a decrease in the degree of orientation even after short exposure times. Quantification of the orientation revealed a significant inhibition after 2 h exposure. Similarly, the percent...
متن کاملApparent amitosis in the binucleate dinoflagellate Peridinium balticum.
Mitosis and cytokinesis in the free-living binucleate dinoflagellate Peridinium balticum are described, P. balticum contains 2 nuclei; one is a typical dinoflagellate nucleus and the other resembles the interphase nuclei of some eucaryotic cells and is here named the supernumerary nucleus (formerly called the eucaryotic nucleus). The dinoflagellate nucleus divides in the characteristic manner a...
متن کاملProgrammed cell death of the dinoflagellate Peridinium gatunense is mediated by CO2 limitation and oxidative stress
The phytoplankton assemblage in Lake Kinneret is dominated in spring by a bloom of the dinoflagellate Peridinium gatunense, which terminates sharply in summer [1]. The pH in Peridinium patches rises during the bloom to values higher than pH9 [2] and results in CO(2) limitation. Here we show that depletion of dissolved CO(2) (CO(2(dis))) stimulated formation of reactive oxygen species (ROS) and ...
متن کاملCompeting phytoplankton undermines allelopathy of a bloom-forming dinoflagellate.
Biotic interactions in the plankton can be both complex and dynamic. Competition among phytoplankton is often chemically mediated, but no studies have considered whether allelopathic compounds are modified by biotic interactions. Here, we show that compounds exuded during Karenia brevis blooms were allelopathic to the cosmopolitan diatom Skeletonema costatum, but that bloom allelopathy varied d...
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ژورنال
عنوان ژورنال: Japanese Journal of Water Treatment Biology
سال: 1991
ISSN: 0910-6758,1881-0438
DOI: 10.2521/jswtb.27.2_7