alexa Sensitivity of Different Endpoints in Euglena gracilis
ISSN: 2347-7830

Research & Reviews: Journal of Ecology and Environmental Sciences
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Sensitivity of Different Endpoints in Euglena gracilis to Wastewater Toxicity

Donat-P. Häder1, Uzair Muhammad2 and Azizullah Azizullah2,*

1Emeritus from Friedrich-Alexander University, Department of Biology, Neue Str. 9, 91096 Möhrendorf, Germany

2Department of Botany, Kohat University of Science and Technology (KUST), Kohat, Pakistan

*Corresponding Author:
Azizullah A
Department of Botany
Kohat University of Science and Technology (KUST)
Kohat, Pakistan
E-mail: [email protected]

Received: 15 July 2015 Accepted: 20 August 2015 Published: 25 August 2015



Chemical analysis of potential pollutants in wastewater is hampered by the large number of toxins, time constrains and high costs. Therefore bioassays are being employed to evaluate toxicity and monitor pollution levels. In addition to protozoa, invertebrates and vertebrates as well as algae and higher plants, flagellates are being used for this purpose. Euglena gracilis, a unicellular photosynthetic flagellate, is an excellent candidate because of its ease of cultivation, fast growth and rapid responses to environmental stress parameters. The cells are motile and respond to light and gravity and are capable of morphological changes of their cell form. The precision of phototaxis and gravitaxis is affected by a variety of organic and inorganic toxins. Swimming velocity and percentage of motile cells is a sensitive endpoint for pollution monitoring. Photosynthetic quantum yield and pigments are likewise suitable parameters in testing environmental stress parameters.


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