The colloidal organic matter (COM) was isolated from the exudates of three cultured phytoplonkters, namely chlophyte nanoflagellate Tetraselmis sp., diatom Chaetoceros socialis and dinoflagellate Prorocentrum minimum, Gulf Trieste (northern Adriatic Sea). isolation COM performed by ultrafiltration with molecular weight cut-off membranes 5 kDa final desalinisation dialysis. composition character...

Experiments were carried out on four cell types: Chlorella sp., Tetraselmis sp., and mesophyll protoplasts of Dendrobium and Lilium longiflorum. The speed of cell translation in between a pair of cylindrical electrodes was measured at different solution conductivities (σs). For each field frequency, the speed was plotted against the gradient of electric field squared to obtain the real part Re[...

Microalgae have great potential to be a feedstock for producing biofuel. One of the major impediments towards the industrial-scale manufacturing of biofuel from microalgae is the ineffective separation of microalgae from water. In this communication, we first carried out froth flotation tests to harvest freshwater microalgae (Chlorella sp. BR2) and marine microalgae (Tetraselmis sp. M8) from di...

The natural estrogen 17 -estradiol (E2) is responsible for the endocrine disruption and also has potential effect on the reproduction of vertebrate. However, its effect on invertebrate reproduction has scarcely been studied. The present study was conducted to determine the effect of E2 on survival, egg production and egg hatch of calanoid copepod, Acartia omorii under bath administration. Survi...

The taxonomic composition of phytoplankton responsible for primary production on continental shelves has changed episodically through Earth history. Geological correlations suggest that major changes in phytoplankton composition correspond in time to changes in grazing and seawater chemistry. Testing hypotheses that arise from these correlations requires experimentation, and so we carried out a...

Reduced grazing on harmful algal bloom species has been attributed to both the feeding deterrence and toxicity of the algae. Both toxic and deterrent effects of dinoflagellates of the genus Alexandrium, which contain toxins that cause paralytic shellfish poisoning, have been reported on different copepod species. We examined how toxin-containing Alexandrium fundyense affected ingestion rates of...

This study tested the growth of three algal species (Chlorella sp., Synechocystis sp. PCC 6803, and Tetraselmis suecica) using flue gas (generated by natural gas combustion). All the cultures showed poor biomass growth if they were exposed to continuous flue gas. To optimize the flue gas utilization in algal photo-bioreactors, we performed both model simulations and experimental analysis. First...

Naturally saline rivers are known in various regions of the world. Saline with a salinity gradient from source to mouth particularly interesting, because range is structure-forming factor hydrobiont assemblage. Such represented by Elton Lake Basin Volgograd region Russia (the Bolshaya Samoroda River and Malaya River). Herein, we analyzed taxonomic structure species diversity microalgae Cyanobac...