Comparative effects of chemical pesticides on survival, body mass and respiration of the pulmonate slugs, Milax rusticus (Millet, 1843) and Milax sowerbyi (Ferussac, 1823)(Mollusca: Milacidae)
1995
Nair, G.A. | Mohamed, A.I. (Garyounis Univ., Benghazi (Libyan Arab Jamahiriya). Dept. of Zoology) | Bhuyan, K.C.
Laboratory observations, over a period of 144 h, were made to study the effects of pesticides methidathion (organophosphate), sevin (carbamate), fenvalerate (pyrethroid), glyphosate (herbicide) and ethirimol (fungicide) on the survival, body mass and respiration of the slugs Milax rusticus (Millet, 1843) and Milax sowerbui (Ferussac, 1832). These pesticides are in common use in the farms of Benghazi and its neighbourhood. Survival was adversely affected for M. rusticus treated with methidathion and sevin whereas M. sowerbyi was more susceptible to methidathion glyphosate and ethirimol. An increase in the body mass of the control and the pesticide treated slugs over time was evident in both species. Significant difference in moisture content existed between the control and the pesticide treated slugs and also between the pesticide treated species. The duration of exposure of these slugs in most of the pesticides showed significant increase in their rate of oxygen consumption. The ecological implication of the findings are discussed.
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