Results 181 to 190 of about 7,485 (207)

Joint toxicity of microplastics with triclosan to marine microalgae Skeletonema costatum

Environmental Pollution, 2019
Toxicity of single microplastics on organisms has been reported widely, however, their joint toxicity with other contaminants on phytoplankton is rarely investigated. Here, we studied the toxicity of triclosan (TCS) with four kinds of microplastics namely polyethylene (PE, 74 μm), polystyrene (PS, 74 μm), polyvinyl chloride (PVC, 74 μm), and PVC800 (1 ...
Zhi-lin Zhu, Su-chun Wang, Fei-fei Zhao, Shu-guang Wang, Fei-fei Liu, Guang-zhou Liu   +5 more
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Reassessment of lipid composition of the diatom, Skeletonema costatum

Phytochemistry, 1995
In the present work, we questioned the natural or artifactual origin of the large amounts of free fatty acids recovered in lipids from the diatom Skeletonema costatum. Using rapid cell harvest and a very drastic method to extract the lipids, we demonstrated that these lipid patterns rich in free fatty acids were relevant to the degradation of complex ...
openaire   +1 more source

Biological control of Vibrio alginolyticus in Skeletonema costatum (Bacillariophyceae) cultures

Aquacultural Engineering, 1998
A bacterial strain (SK-05), selected for its active growth in organic-poor substrates and inoculated in a Skeletonema costatum culture in late exponential growth, prevented the establishment of Vibrio alginolyticus, purposely introduced into the diatom culture. Since SK-05 has no bacteriostatic or antibiotic activity against V.
Roxana Rico-Mora, Domenico Voltolina, Julio A Villaescusa-Celaya   +2 more
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Competitive interaction between Ditylum Brightwellii and Skeletonema Costatum by toxic metabolites

Netherlands Journal of Sea Research, 1989
Abstract Comparative growth experiments were carried out in order to examine the role of toxic metabolites in the competition between two marine diatom species. Ditylum brightwellii and Skeletonema costatum exhibited mutual inhibition and auto-inhibition. Charcoal filtration did not entirely remove the toxicity.
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Growth and biochemical responses of Skeletonema costatum to petroleum contamination

Journal of Applied Phycology, 2016
Clonal populations of the diatom Skeletonema costatum isolated from Lake Pontchartrain (Louisiana, USA) near the 2010 Deepwater Horizon oil release were exposed to uncontaminated f/2 medium or light slop oil emulsified (O-E; 25, 50, 75, 100 % of initial levels) in f/2 during short- (10 day) and long-term (21 day) incubations. During 10-day incubations,
James L. Wee, David F. Millie, Ngan K. Nguyen, Johnathan Patterson, Rose Ann Cattolico, David E. John, John H. Paul   +6 more
openaire   +1 more source

POPULATION GENETICS OF SKELETONEMA COSTATUM (BACILLARIOPHYCEAE) IN NARRAGANSETT BAY¹

Journal of Phycology, 1980
ABSTRACTDuring a two year period 457 clones of the diatom Skeletonema costatum were isolated prior to and during the summer‐fall and winter‐spring blooms of this species in Narragansett Bay, R.I. Their allozyme banding patterns were examined for 5 enzyme loci.
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Roles of carbonic anhydrase in photosynthesis of Skeletonema costatum.

Zhi wu sheng li yu fen zi sheng wu xue xue bao = Journal of plant physiology and molecular biology, 2005
The role of carbonic anhydrase (CA) in photosynthesis of the marine diatom Skeletonema costatum grown at ambient level of CO(2) was investigated. Extracellular CA activity was very low. In comparison, intracellular CA activity was great part of total CA activity.
Chen, X. W., Gao, K. S.
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Cultivation of diatom skeletonema costatum in airlift photobioreactor

This work aimed to examine the performance of 3 L airlift photobioreactor system on the cultivation of Skeletonema costatum compared to that in bubble column. Firstly, the experiment was set out to determine appropriate medium for Skeletonema costatum where it became apparent that the standard F/2 medium (Guillard's medium) could only yield the best ...
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A unique hexaene hydrocarbon from a diatom (Skeletonema costatum)

Biochimica et Biophysica Acta (BBA) - Lipids and Lipid Metabolism, 1970
R F, Lee, J C, Nevenzel, G A, Paffenhöfer, A A, Benson, S, Patton, T E, Kavanagh   +5 more
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مطالعه میزان رشد دیاتومه Skeletonema costatum تحت تاثیر رژیمهای مختلف

2004
تاثیر نور بر رشد فیتوپلانکتون Skeletonema costatum در 20 تیمار نوری مختلف شامل 5 شدت 2000، 4000، 6000، 8000 و 10000 لوکس هر کدام با 4 تناوب تاریکی: روشنایی (L:D) و 24:0، 18:6،12:12 و 6:18 ساعت بررسی گردید. از تمام نمونه ها به طور روزانه نمونه برداری صورت گرفت و تراکم سلولی و نرخ رشد در همه آنها اندازه گیری شد.
openaire   +1 more source