F. N. Heiba
Not Available
I. M. Al-Sharkawy
Not Available
A. A. Al-Batal
Not Available
ABSTRACT
The efficacy of the insecticide lannate as a molluscicide for the control of two land snail species widely distributed all over the Nile Delta, E. vermiculata and M. contiana was investigated. The rates of mortalities of both snail species are depend on the dose and time of exposure to the insecticide, lannate. The higher mortality rates were noticed at doses higher than LD50. However, at all doses, the mortality rates increased by the time and most mortalities occurred over five days post insecticide administration, the maximum mortality rates of 95 and 75% were observed for E. vermiculata and M. contiana after 108 hours by doses of 34.8 and 39.4 mg/kg, respectively. Both species of the land snails treated with lannate have shown pathological alterations in the digestive gland and in the gonads. The vacuolated and swollen digestive cells and presence of numerous yellowish brown granules (residual bodies ) in the cells are the most pathological changes observed. These indicate that lannate have toxic effects in cellular damage of the digestive glands of the snails which could be correlated with the disturbed enzyme activities. The male and female gametes on the other hand, are severely affected and probably the male gametes are inhibited to develop to the late stages of spermatogenesis. This indicates that the insecticide used did not cause a complete cessation of gametogenesis
PDF References Citation
How to cite this article
F. N. Heiba, I. M. Al-Sharkawy and A. A. Al-Batal, 2002. Effects of the Insecticide, Lannate, on the Land Snails, Eopania vermiculata and Monacha contiana, Under Laboratory Conditions. Journal of Biological Sciences, 2: 8-13.
DOI: 10.3923/jbs.2002.8.13
URL: https://scialert.net/abstract/?doi=jbs.2002.8.13
DOI: 10.3923/jbs.2002.8.13
URL: https://scialert.net/abstract/?doi=jbs.2002.8.13
REFERENCES
- De Duve, C. and R. Wattiaux, 1966. Functions of lysosomes. Ann. Rev. Physiol., 28: 435-492.
CrossRefDirect Link - El-Okda, M.M.K., 1979. Land snails of economic importance at Alexandria region with some notes on the morphological features, classification, economic damage and population on ornamental plants. Agric. Res. Rev., 57: 125-130.
Direct Link - El-Okda, M.M.K., 1982. Land snails of economic importance on vegetable crops at alexandria and neighboring regions land mollusks, slugs, Egypt. Agric. Res. Rev., 58: 79-86.
Direct Link - Nakhla, J.M. and A.W. Tadros, 1995. Studies on the seasonal abundance of land snails on date palm shoots at Sharkia Governorate. Agric. Res. Rev., 73: 347-355.
Direct Link