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Egyptian Journal of Aquatic Biology and Fisheries
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Issue Issue 1
Al-Sharkawi, I., Badawy, B. (1997). SCHISTOSOMIASIS CONTROL IN EGYPT: THE IMPACT OF CHLORINATED LIME AS A CERCARICIDE ON SOME NON-TARGET AQUATIC SPECIES COMMONLY DISTRIBUTED IN IRRIGATION CANALS. Egyptian Journal of Aquatic Biology and Fisheries, 1(2), 187-198. doi: 10.21608/ejabf.1997.3385
Ismail Al-Sharkawi; Badawy Badawy. "SCHISTOSOMIASIS CONTROL IN EGYPT: THE IMPACT OF CHLORINATED LIME AS A CERCARICIDE ON SOME NON-TARGET AQUATIC SPECIES COMMONLY DISTRIBUTED IN IRRIGATION CANALS". Egyptian Journal of Aquatic Biology and Fisheries, 1, 2, 1997, 187-198. doi: 10.21608/ejabf.1997.3385
Al-Sharkawi, I., Badawy, B. (1997). 'SCHISTOSOMIASIS CONTROL IN EGYPT: THE IMPACT OF CHLORINATED LIME AS A CERCARICIDE ON SOME NON-TARGET AQUATIC SPECIES COMMONLY DISTRIBUTED IN IRRIGATION CANALS', Egyptian Journal of Aquatic Biology and Fisheries, 1(2), pp. 187-198. doi: 10.21608/ejabf.1997.3385
Al-Sharkawi, I., Badawy, B. SCHISTOSOMIASIS CONTROL IN EGYPT: THE IMPACT OF CHLORINATED LIME AS A CERCARICIDE ON SOME NON-TARGET AQUATIC SPECIES COMMONLY DISTRIBUTED IN IRRIGATION CANALS. Egyptian Journal of Aquatic Biology and Fisheries, 1997; 1(2): 187-198. doi: 10.21608/ejabf.1997.3385

SCHISTOSOMIASIS CONTROL IN EGYPT: THE IMPACT OF CHLORINATED LIME AS A CERCARICIDE ON SOME NON-TARGET AQUATIC SPECIES COMMONLY DISTRIBUTED IN IRRIGATION CANALS

Article 11, Volume 1, Issue 2, June 1997, Page 187-198  XML
DOI: 10.21608/ejabf.1997.3385
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Authors
Ismail Al-Sharkawi; Badawy Badawy
Zoology Department, Faculty of Science, University of Tanta, 31111 Tanta, Egypt.
Abstract
Chlorinated lime is the cercaricide of choice suggested for use in the control of schistosomiasis transmission in irrigation
canals and ditches by what is termed the "cercaricidal pocket". The present study was, therefore, conducted to evaluate the lethality of the compound against some representative aquatic species commonly found in the irrigation streams. The species tested were the snails: Physa acuta, Planorbis planorbis, Lanistes carinatus and Bellamya unicolor; the fish: Clarias lazera,Oreochromis niloticus and Gambusia affinis; the annelid: Hirudo sp.; the crustaceans: Daphnia sp., Cyclops sp., Cypris sp. and Caridina nilotica and the aquatic insects: Belostoma nilotica,Cybister sp. and the mosquito larvae as well as the tadpole larvae.The results obtained showed first that, except for tadpole larvae, no mortalities were observed at an exposure concentration of 5 ppm of the cercaricide. The lethal concentration of the compound varied with the species. Secondly, all mortalities of the species tested took place during the first 24 hours of exposure and the animals survived the exposure behaved normally thereafter. Thirdly, the cercaricide is safe for all the aquatic species tested at the cercaricidal concentration suggested for use in the control of Schistosoma mansoni transmission.
The advantage of the compound and the way of its application in the control of S. mansoni transmission in Egypt was
discussed in view of the results obtained.
Keywords
Schistosomiasis; chlorinated lime; irrigation canal
Main Subjects
Fisheries
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