ECOLOGICAL AND TOXICOLOGICAL STUDY ON SOME TERRESTRIAL SNAILS SPECIES

Abstract

Ecological studies indicated that, type of soil and soil moisture playing an important role of increase or decrease the food consumption, whereas, lettuce leaves for adult of E. vermiculata at 60% soil moisture in clay soil was recorded highly food consumption at December with an average 135.6±4.35 gm month-1 followed by November, January and February 133.64±4.06, 123.78±3.68 and 115.32±3.17 gm month-1 respectively, while at 30% soil moisture in sand soil was recorded the lowest food consumption 98.64±1.64 gm month-1. While used 90% soil moisture, Food consumption were slightly high in clay soil in November and December with an average 125.38±3.26, 125.36±5.55 gm month-1 For mint leaves at 30% soil moisture, the highest food consumption was recorded at November and December in clay soil 43.06±3.75 and 40.88±2.58 gm month-1, respectively, then peat soil the food consumption was recorded 33.58±2.66 and 35.44±2.75 gm month-1, respectively. While in 60% was recorded the highest food consumption in clay soil 46.84± 4.06 gm month-1, following at November, January and February were recorded 45.04± 7.14, 41.66± 4.07 and 32.84± 4.47 gm month-1, respectively. In 90% soil moisture was recorded the lowest food consumption in sand soil 26.72±4.59gm month-1 For wheat leaves, results, were recorded no significant differences between three type of soil during different months, in 30% soil moisture was recorded highest food consumption at February in clay soil 16.12± 1.23 gm month-1 following peat and sand soil with an average 14.60± 1.28 and 14.10± 1.57 gm. / month. In 60% soil moisture at November, the highest food consumption was in clay soil 18±0.5 gm month-1 then peat and sand soil were 16.80±0.88 and 15.80±0.73 gm month-1, respectively. In 90% was recorded the lowest food consumption in sand soil at February 13.98±1.45 gm month-1.