Egyptian clover leaves were most consumed for Monacha obstracta (27g./ 10 individuals/ 5 days) followed by peganums, hibiscus and date palm11,11 and 10g./ 10 individuals/ 5 days respectively, while did not approach the sansevieria leaves. Peganums leaves were most consumed for both Eopania vermiculata and Thepa pisana 63 and 54 g./ 10 individuals/ 5 days respectively. Sansevieria and date palm leaves were less than the two previous ornamental plants. M. obstracta preferred Egyptian clover leaves followed by plant leaves, while T. pisana and E. vermiculata preferred the peganums and hisbicus. wheat bran and crushed bread were most attractive for all species wheat bran snails than other foods.

No abstract

to evaluate the effect of earthworm Aporrectodea longa (the black-headed worm) individuals application on improving some physical properties of compacted clay soil (losing of compaction and improved the movement of water and air) and loose sandy soil (stabilization of aggregates and increase of moisture retention). The results showed that the addition of earthworm (Aporrectodea longa) individuals had a marked effect for improving soil physical properties of both soils under investigation (compacted clay and loose sandy soils). Where it seen that the compaction of clay soil was reduced, which appear which the soil bulk density values was decreased and subsequently, total porosity was increased. On this concern, the hydraulic conductivity was increased, indicating a marked improvement of the pore size distribution. The results showed that aggregate size distribution and mean weight diameter affected by addition of earthworm (Aporrectodea longa) individuals, where the percentage of macro-aggregates increased and the micro-aggregates decreased. According to this the results indicated that mean weight diameter values increased compared to the control treatment of both soils. The same trend was observed either soil bulk density or total porosity of the loose sandy soil. This is contrast in case of both pore size distribution and hydraulic conductivity. Where the hydraulic conductivity was decrease by application of earthworm (Aporrectodea longa) treatments.

No abstract

The terrestrial snail became economic serious pests attacking field corps, vegetables and orchards. This work was aimed to study the effect of some environmental factors on the biology of two species of land snails, Monacha obstructa and Eobania vermiculata. Results showed that, the soil types were markedly effective on fecundity and Ovipostion period of the land snails, M. obstructa and E. vermiculata. Clay and sandy loamy soils were favorable to such snail species, Whereas the general means of total clutches and eggs laid by one pair of both snails during the entire breeding season were (6.4 and 5.4 clutches and 211.4 and 271.6 eggs) and (6.36 and 6.36 clutches and 250.02 and 273.36 eggs) for M. obstructa and E. vermiculata respectively. While the highest values of general means of clutch size were (50.29 and 42.94) for sandy loamy soil while, the highest oviposition period were recorded in clay soil with values (69.4 and 68 days) for the two land snails respectively. Also, soil moisture was effected on num ber of per clutch. The highest egg number were recorded at percentage 80% soil moisture (116.8 eggs for M.obstructa) and (89.67 eggs for E. vermiculata) On the other hand, data revealed that the eggs of the two species of snails did not hatch at 30°C. On other hand, the highest values of egg hatch were found at 15°C with values 81and 76% for M. obstructa and E, vermiculata respectively. As the temperature increased, the egg hatching was significantly decreased. It clear that eggs of snails are sensitive to high temperature and embryos died at 30°C.