Studies on Some Ecological Aspects of Sand Termite, Psammotermes Hypostoma (Desn.), at Ismailia Governorate

Abstract

Study of sand termite, P. hypostoma (Desn.), throughout two successive years in 1995 and 1996, clarified that, the termite individuals were abundant during winter and autumn seasons. The workers, first and second nymphs and soldiers were abundant in the winter and reduced during summer season. On the other hand, swarming of winged castes (alates) was occurred during autumn and summer months. The population of workers represented the highest percentages from the total numbers of gallery, followed by soldiers, nymphs and alates. In summer 1995 and 1996, the attraction rate of traps in the tested area (surface activity) was higher during autumn and winter and lower in summer, while the surface activity (food consumption and soil translocated without insects) was higher during summer and autumn, while was lower during winter season throughout 1995 and 1996. Also the highest number of caughted traps was recorded during winter and the lowest one occurred during summer. Food consumption by termites was higher during spring and summer, while it was lower during winter. Soil translocation (construction) showed also the same trend.

Laboratory and Field Toxicity Evaluation of some Methomyl Derivatives against Eobania vermiculata Infesting Citrus Trees

“…Terrestrial snails resulted in many dangerous effects on a lot of field crops, orchards trees and ornamentals (El-Okda 1979;De Ley et al, 2020), they are considered one of the most severe agriculture pests that eradicate vegetables, seeds, fruit trees, roots, tubers and ornamental plants (Shahawy 2019;El-Deeb et al, 1999;El-Okda 1984;Ismail 1997and, Godan 1983. The mucous secretion produced by land snails' movement caused unfavorable taste and aroma which in turn makes obviation for animals and humans to feed on infected plants (El-Deeb et al, 1999).…”