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El-Dahhar, A., Zeweil, H., El-Tawil, N. (2000). LABORATORY STUDIES ON THE MOLLUSCICIDAL AND CERCARICIDAL ACTIVITIES OF COMMIPHORA MOLMOL.. Egyptian Journal of Aquatic Biology and Fisheries, 4(2), 251-266. doi: 10.21608/ejabf.2000.1671
Alaa El-Dahhar; Hassan Zeweil; Nader El-Tawil. "LABORATORY STUDIES ON THE MOLLUSCICIDAL AND CERCARICIDAL ACTIVITIES OF COMMIPHORA MOLMOL.". Egyptian Journal of Aquatic Biology and Fisheries, 4, 2, 2000, 251-266. doi: 10.21608/ejabf.2000.1671
El-Dahhar, A., Zeweil, H., El-Tawil, N. (2000). 'LABORATORY STUDIES ON THE MOLLUSCICIDAL AND CERCARICIDAL ACTIVITIES OF COMMIPHORA MOLMOL.', Egyptian Journal of Aquatic Biology and Fisheries, 4(2), pp. 251-266. doi: 10.21608/ejabf.2000.1671
El-Dahhar, A., Zeweil, H., El-Tawil, N. LABORATORY STUDIES ON THE MOLLUSCICIDAL AND CERCARICIDAL ACTIVITIES OF COMMIPHORA MOLMOL.. Egyptian Journal of Aquatic Biology and Fisheries, 2000; 4(2): 251-266. doi: 10.21608/ejabf.2000.1671

LABORATORY STUDIES ON THE MOLLUSCICIDAL AND CERCARICIDAL ACTIVITIES OF COMMIPHORA MOLMOL.

Article 12, Volume 4, Issue 2, April 2000, Page 251-266  XML PDF (538.44 K)
Document Type: Original Article
DOI: 10.21608/ejabf.2000.1671
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Authors
Alaa El-Dahhar1; Hassan Zeweil2; Nader El-Tawil3
1Animal and Fish Production Department, Faculty of Agriculture (Saba Bnsha Alexandria University PO Box 21531, Bolkly Alexandria Egypt
2Animal and Fish Production Department, Faculty of Agriculture (Saba Bnsha Alexandria University PO Box 21531, Bolkly Alexandria Egypt
3Animal and Fish Production Department, Faculty of Agriculture (Saba Bnsha Alexandria University PO Box 21531, Bolkly Alexandria Egypt
Abstract
Purified oil and oieo - resin extracts of the Arabian or Somali gum Commiphora molmol (family: Burseraceae) were used as plant molluscicides against the vector snails Biomphalaria alexandrina, Bulinus truncatus and Lymnaea nataiensis. The results indicated that oil extract possesses a higher molluscicidal potency than the oleo-resin. The mortality rate of exposed snails was increased by prolongation of the exposure time. The LC50 values for the oil extract against Lymnaea ncnalertsis were quite lower than (hose utilised with H. alexandrine and B, trunvaius. These values were 5. 4 & 3 ppm. for exposure periods of 24, 48 & 96 hours respectively. Conversely, the oleo - resin extract showed a more pronounced cercaricidal potency than the oil. Total death of cercariae was remarked after 1/4 h of exposure to 10. 5 & 2.5 ppm.
Keywords
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Fisheries
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