Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Fayez M. Semida"'
Publikováno v:
Advances in Entomology. 10:300-319
Publikováno v:
Catrina: The International Journal of Environmental Sciences. :27-33
Publikováno v:
Catrina: The International Journal of Environmental Sciences. 21:37-45
The toxic effects of some Ruta angustifolia extracts as a bio agent to control Spodoptera littoralis were investigated. Based on LC50 values, the acetonic extract was more effective than hexane and ethyl alcoholic ones. Ergosterol-propyl ester was is
Publikováno v:
Open Journal of Animal Sciences. :16-27
Black bean aphid, Aphis fabae (Homoptera; Aphididae) is a serious pest causing crop loss. Plant-aphid interaction is a dynamic system subjected to continual variation and changes. Host plants induce various biochemical and physical defense mechanisms
Publikováno v:
Asian Journal of Biological Sciences. 6:40-53
Publikováno v:
Zoology in the Middle East. 54:101-112
Ants (Hymenoptera: Formicidae) captured in pitfall traps were compared within and among three altitudinal gradients in St. Catherine Protectorate, south Sinai, Egypt, to study the ant diversity patterns and their relationship with environmental facto
Publikováno v:
Biological Journal of the Linnean Society. 87:427-435
When a pollination vector is required, any mechanism that contributes to floral visitation will potentially benefit the reproductive fitness of a plant. We studied the effect of floral colour change in the desert perennial Alkanna orientalis on the f
Publikováno v:
Ecological Entomology. 24:208-221
Females of the desert solitary bee Anthophora pauperata collect nectar and pollen almost exclusively from Alkanna orientalis (Boraginaceae). The bee and plant are found together in the early spring, living in the bottom of steep- sided wadis (dry riv
Publikováno v:
Animal Behaviour. 48:535-549
Abstract. A solitary anthophorid bee (Anthophora sp. nov.) in the Sinai desert showed sexually dimorphic diurnal activity patterns, whereby males defended territories containing clumps of the flower Alkanna orientalis between 0815 and 1430 hours whil
Publikováno v:
Scopus-Elsevier
We studied an insect-plant pollination system in adjacent steep-sided wadis and a connecting plain in the mountains of southern Sinai (Egypt): this environment creates a strongly divided habitat, which may promote the local differentiation of sub-pop