Effect Of Azadirachta Indica Seed Extract Upon Predator Ciliates On Intensive Culture Of Unicellular Algae Dunaliella Tertiolecta
2006
Manaffar, R., Lecturer (Scientific Staff) Artemia and Aquatic Animals Research Center- Urmia University- | Maleki, R., Lecturer (Scientific Staff) Chemical and Food Analysis Research Lab- Jahad- e -Daneshgahi., | Atashbar, B., Lecturer (Scientific Staff) Artemia and Aquatic Animals Research Center- Urmia University-Urmia., | Agh, N., Lecturer (Scientific Staff) Artemia and Aquatic Animals Research Center- Urmia University-Urmia
In this research effect of Azadirachta indica (Juss) seed extract upon predator ciliates in intensive unicellular algal mass culture of Dunaliella tertiolecta (Butcher) under laboratory condition were studied. For this propose, LC 100 of ciliates and EC 50 algae in the optimum Lab. condition were examined. Results show that a 24-h LC 100 at 4mg/l seed extract was found for the ciliate whereas at 24h EC50 10 mg/l had the best result for the ciliate. But at investigation of seed extract effect upon the of unicellular algae and ciliate both to gathers at one contaminated sample show that The application dose for use of this extract with useful effect in completely elimination of ciliates is over than 4 - 5 mg/l. Finally study in long time effect of seed extract upon the mortality, motion and body shape of algae cells showed that this extract is able to recover contaminated algal population and had no harmful effect on the algae cells at 72 hour.
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