Bloom and Limiting Factor of Gonyostomum Semen (Ehr.) Diesing (Raphidophyceae) in Kawahara Lake.
نویسندگان
چکیده
منابع مشابه
Pigment composition and photoacclimation as keys to the ecological success of Gonyostomum semen (Raphidophyceae, Stramenopiles).
Aquatic habitats are usually structured by light attenuation with depth resulting in different microalgal communities, each one adapted to a certain light regime by their specific pigment composition. Several taxa contain pigments restricted to one phylogenetic group, making them useful as marker pigments in phytoplankton community studies. The nuisance and invasive freshwater microalga Gonyost...
متن کاملGermination and colonization success of Gonyostomum semen (Raphidophyceae) cysts after dispersal to new habitats
Colonization of new habitats through dispersal of phytoplankton cysts might be limited, if resident populations outcompete invaders during germination. We reciprocally transferred Gonyostomum semen (Raphidophyceae) cysts from three lakes into native and foreign waters originating from the respective habitats. Germination rate and germling growth were impacted by water origin, but there was no p...
متن کاملZooplankton Feeding on the Nuisance Flagellate Gonyostomum semen
The large bloom-forming flagellate Gonyostomum semen has been hypothesized to be inedible to naturally occurring zooplankton due to its large cell size and ejection of long slimy threads (trichocysts) induced by physical stimulation. In a grazing experiment using radiolabelled algae and zooplankton collected from lakes with recurring blooms of G. semen and lakes that rarely experience blooms, w...
متن کاملSterols of the green-pigmented, freshwater raphidophyte, Gonyostomum semen, from Scandinavian lakes.
Sterols are a class of membrane-reinforcing, ringed lipids which have a long history of examination in algae as a means of deriving chemotaxonomic relationships and as potential lipidic biomarkers. The Raphidophyceae represent a class of harmful, bloom-forming, marine and freshwater algae. To date, there have been four published examinations of their sterol composition, focusing primarily on br...
متن کاملIsolation of a virus infectious to the harmful bloom causing microalga Heterosigma akashiwo (Raphidophyceae)
A virus infecting the harmful bloon~ causing microalga Heterosjgma akashiwo (Raphidophyceae) was isolated from the coastal water of Nomi Bay, Japan, In July 1996. The isolate caused lysis in 2 strains of H. akashiwo tested and numerous virus-like particles (VLPs) appeared in the lysed algal culture, whereas virus multiplication was not detected in the healthy culture of H. akashiwo without its ...
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ژورنال
عنوان ژورنال: Journal of Japan Society on Water Environment
سال: 2001
ISSN: 0916-8958,1881-3690
DOI: 10.2965/jswe.24.709