Marwa Genena

• Ph.D.
• Professor (Assistant) at Mansoura University

The present study was investigated the biochemical effect of three molluscicides in the tissues of the two land snails, Monacha cantiana (Montagu) and Eobania vermiculata (Muller). The field recommended rate of three commercial molluscicide baits namely: Gastrotox, mlotov and mesurol were evaluated. The activities of five vital enzymes, total prote...

The rhabditid nematode, Phasmarhabditis hermaphrodita is a lethal parasite of certain terrestrial gastropods and has been shown as a biocontrol agent under laboratory and field conditions. In Egypt, P. hermaphrodita was isolated for the first time from different species of terrestrial gastropods found associated with various crops at Aga and Mansou...

Under laboratory conditions, eight native bacterial isolates of Bacillus thuringiensis, were tested for their molluscicidal activity against the two land snails, Monacha cantiana (Montagu) and Eobania vermiculata (Muller) at a constant concentration (7x10 6 cfu/ ml) using three methods of application. Results revealed that all tested isolates appli...

Abstract- The pathogenicity of four nematode species namely, Phasmarhabditis hermaphrodita, Diplogaster spp, Heterorhabditis bacteri-ophora and Steinernema carpocapsae were tested at three inoculum levels i.e. 2000, 5000 and 7500 individuals against the clover land snail, Monacha cantiana after one, two and three weeks of exposure periods. Results...

The potentials of the rhabditid nematode, P. hermaphrodita (13x10 4 IJs / 60cm 2) , B. thuringiensis, K64 (1x10 8 cfu /1 ml) and the three pesticides, bensultap deltamethrin and methomyl applied as baits (2% a.i.) for the control of the clover land snail, M. cantiana was carried out under mini-plot field conditions in a clover area at 27±3ºC and 70...

In this field study, the levels of heavy metals (Pb, Fe, Co, Cu, and Zn) in water and a suite of biochemical and histological biomarkers in the grouper (Epinephelus tauvina) were assessed at four sites in the Arabian Gulf. Samples were taken from a relatively non-urban reference site, called Salwa (S1), and three effluent-dominated sites, namely Al...

شهادة

In Egypt, the four land snail species namely; Allopeas clavulinum Potiez & Michaud, Opeas pyrgula Schmacker & Boettger, Helicodiscus singleyanus inermis Pilsbry and Vallonia pulchella (Muller) were recorded for the first time associated with various ornamental plants at Mansoura district, Dakahlia Governorate. These land snails were found to be bel...

The effect of temperature on the biology and life table of Caloglyphus manuri Eraky & Osman fed on egg masses of the root knot nematode, Meloidogyne sp. was determined at 20, 25 and 30 º C. Its life cycle durated 13.50, 7.92 and 7.42 days for female and 12.65, 7.82 and 7.11 for male when fed at 20, 25 and 30 º C, respectively. Female life span aver...

The susceptibility of four common adult helicid land snail species; Cebaea hortensis , Eobania vermiculata , Monacha cantiana and Theba pisana , and the tree slug, Lehmannia marginata to the rhabditid nematode, Phasmarhbditis hermaphrodita was carried out in vivo after one, two and three weeks of exposure to constant inoculum nematode level (3000 I...

شهادة تقدير

شهادة تقدير

Pathogenicity of the entomopathogenic nematodes and two indigenous isolates of the rhabditid nematode, Phasmarhabditis hermaphrodita against the clover land snail, Monacha cantiana. ABSTRACT The pathogenicity of four nematode species namely, Phasmarhabditis hermaphrodita, Diplogaster sp, Heterorhabditis bacteriophora and S. carpocapsae were tested...

The following six pesticides namely, bensultap, chlorpyrifos-ethyl, deltamethrin, diazonixy, lambda-cyhalothrin and methomyl were laboratory tested for their molluscicidal activity against the two land snails, Monacha cantiana (Montagu) and Eobania vermiculata (Muller) as poisonous baits at a constant concentration of 2%. Results revealed the toxic...