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Taha, O. (1999). EFFECT OF THE HERBICIDE AMETRYN ON GROWTH AND METABOLIC ACTIVITIES OF SCENEDESMUS QUADRICAUDA, STAURASTRUM NATATOR AND MICROCYSTIS FLOS-AQUAE. Egyptian Journal of Aquatic Biology and Fisheries, 3(3), 179-194. doi: 10.21608/ejabf.1999.3434
Ola Taha. "EFFECT OF THE HERBICIDE AMETRYN ON GROWTH AND METABOLIC ACTIVITIES OF SCENEDESMUS QUADRICAUDA, STAURASTRUM NATATOR AND MICROCYSTIS FLOS-AQUAE". Egyptian Journal of Aquatic Biology and Fisheries, 3, 3, 1999, 179-194. doi: 10.21608/ejabf.1999.3434
Taha, O. (1999). 'EFFECT OF THE HERBICIDE AMETRYN ON GROWTH AND METABOLIC ACTIVITIES OF SCENEDESMUS QUADRICAUDA, STAURASTRUM NATATOR AND MICROCYSTIS FLOS-AQUAE', Egyptian Journal of Aquatic Biology and Fisheries, 3(3), pp. 179-194. doi: 10.21608/ejabf.1999.3434
Taha, O. EFFECT OF THE HERBICIDE AMETRYN ON GROWTH AND METABOLIC ACTIVITIES OF SCENEDESMUS QUADRICAUDA, STAURASTRUM NATATOR AND MICROCYSTIS FLOS-AQUAE. Egyptian Journal of Aquatic Biology and Fisheries, 1999; 3(3): 179-194. doi: 10.21608/ejabf.1999.3434

EFFECT OF THE HERBICIDE AMETRYN ON GROWTH AND METABOLIC ACTIVITIES OF SCENEDESMUS QUADRICAUDA, STAURASTRUM NATATOR AND MICROCYSTIS FLOS-AQUAE

Article 12, Volume 3, Issue 3, June 1999, Page 179-194  XML
Document Type: Original Article
DOI: 10.21608/ejabf.1999.3434
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Author
Ola Taha
National Institute of Oceanography and Fisheries Inland Water and Aquaculture Branch.
Abstract
9 6-h bioassay experiments were conducted in order to investigate the influence of the herbicide Ametryn on growth and metabolic activities of three freshwater  microalgae, namely Scenedesmus quadricauda (Trup) de Brebisson, Staurastrumnatator (W.west) (Chlorophyceae) and Microsystis flos-aquea (wittr) Elenkin (Cyanophyceae). The EC50 values of the herbicide Ametryn for inhibiting growth,chlorophyll a dry weight, carbohydrate lipids and protein were determined. The three tested algae and their tested parameters varied greatly in their response to  metryn. Scenedesmus quadricauda was the most susceptible species to Ametryn while - aquae was the most tolerant. Lipid proved to be the tolerant parameter to Ametryn in comparison with the other physiological parameters 
Keywords
Ametryn; Growth; scenedesmus; Microcystis
Main Subjects
Fisheries
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