- Biological control of the clover land snail, Monacha cantiana (Montagu) using the rhabditid nematode, Phasmarhabditis hermaphrodita (Schneider) under laboratory and micro-plot field conditions
unpublished data
Genena, Marwa A. M.
Genena, Marwa A. M. and Fatma A. M. Mostafa
- First record for the slug parasitic nematode, Phasmarhabditis hermaphrodita (Schneider) in Egypt.
Archives of phytopathology and plant protection. in press
Genena, Marwa A. M.
Genena, Marwa A. M. and Fatma A. M. Mostafa
- Susceptibility of different terrestrial gastropod species to the native rhabditid nematode, Phasmarhabditis hermaphrodita.
10th Arab Congress of plant Protection, 26-30 October (2009) Beirut, Lebanon.
Genena, Marwa A. M.
Genena, Marwa A. M. and Fatma A. M. Mostafa
- Advanced studies on chemical and biorational control of certain terrestrial gastropods. Ph.D.Thesis, Agricultural Zoology department, Faculty of Agriculture, Mansoura University
Pages 113PP, Ph.D.
Genena, Marwa A. M.
- Studies on the terrestrial gastropods at Dakhalia governorate. M. Sc. Thesis, Agricultural Zoology department, Faculty of Agriculture, Mansoura University
Pages 136pp, M.SC.
Genena, Marwa A. M.
- Efficacy of four pesticides applied against the land snail, Theba cantiana (Montagu) (Gastropoda: Helicidae) at three exposure periods
Pages . 2343- 2348., J. Agric. Sci. Mansoura Univ, 2002
Genena, Marwa A. M.
Fouly, A. H.; Yousef, A. A.; Mostafa, F. A. M. and Genena, M. A
- MOLLUSCICIDAL ACTIVITY OF SIX PESTICIDES AGAINST THE TWO LAND SNAILS, Monacha cantiana AND Eobania vermiculata (GASTROPODA: Helicidae) UNDER LABORATORY CONDITIONS.
Pages 5307 - 5315
Mostafa,Fatma,A.M.
Genena, Marwa A. M.
Genena, Marwa A. M. and Fatma A. M. Mostafa
Abstract Abstract MOLLUSCICIDAL ACTIVITY OF SIX PESTICIDES AGAINST THE TWO LAND SNAILS, Monacha cantiana AND Eobania vermiculata (GASTROPODA: Helicidae) UNDER LABORATORY CONDITIONS. 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 effect of all tested pesticide baits with mortality percentage increasing with an increase in the period of exposure. It was evident that deltamethrin belonging to pyrethroid group exceeded other pesticides and showed high initial toxicity of 70.0% and 93.3% against M. cantiana and E. vermiculata, respectively after three days of exposure. However, methomyl belonging to carbamate group surpassed other pesticides and gave 100.0% mortality after seven and 12 days for the two land snails, M. cantiana and E. vermiculata, respectively. On the other hand, chlorpyrifos-ethyl exhibited the lowest mortality percentages against the tested land snails. Obviously, methomyl proved to be the most effective pesticides followed by deltamethrin, bensultap, lambda-cyhalothrin, diazonixy then chlorpyrifos-ethyl against the two land snails. Moreover, the brown garden snail, E. vermiculata showed more sensitivity to the tested pesticides especially methomyl and deltamethrin than the clover snail, M. cantiana.
Keywords: land snails, Monacha cantiana, Eobania vermiculata, pesticides, mortality percentage.
- IMPACT OF EIGHT BACTERIAL ISOLATES OF Bacillus thuringiensis AGAINST THE TWO LAND SNAILS, Monacha cantiana AND Eobania vermiculata (GASTROPODA: Helicidae).
Pages 2853 - 2861
Mostafa,Fatma,A.M.
Genena, Marwa A. M.
Genena, Marwa A. M. and Fatma A. M. Mostafa
Abstract Abstract IMPACT OF EIGHT BACTERIAL ISOLATES OF Bacillus thuringiensis AGAINST THE TWO LAND SNAILS, Monacha cantiana AND Eobania vermiculata (GASTROPODA: Helicidae). 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 applied via food or soil had no adverse effect on the tested land snails and resulted no mortality in M. cantiana and E. vermiculata as well. However, results clearly indicate the molluscicidal properties of the tested isolates and identify Bt-k64 ,Bt- B33 as well as Bt- W123 as potentially effective against M. cantiana and E. vermiculata when bacterial isolates were introduced to snails via food and soil simultaneously (concomitant treatment). For eight bacterial isolates, the percentage mortality ranged from 33% to 86.6% for the clover land snail, M. cantiana , while in the brown land snail, E. vermiculata the percentage mortality ranged from 6.6% to 53%. after four weeks of treatment
B. thuringiensis designated as Bt- K64 was the most effective one against the two land snails, M. cantiana and E. vermiculata with percentage mortality 86.6% and 53.0% , respectively whereas, B. thurinigensis designated as Bt- B123 was the least toxic isolate with mortality 33% and 6.6% respectively. M. cantiana was more sensitive to the tested isolates than Eobania vermiculatum.
Moreover, the molluscicidal activity of the three isolates of the bacterium, B. thurinigensis designated as Bt-W123 , Bt-B33 and Bt-K64 at three concentrations (1x10¬¬¬¬¬6 , 1x107 and 1x108 cfu/ ml) against M. cantina under laboratory condition at 15?C±3 and 60 ±5% RH. was undertaken. Isolate Bt –B33 and isolate Bt –W123 showed higher toxicity to the target snail than isolate Bt –K64 with mortality increasing with an increase in the concentrations of isolates as well as the period of exposure. At the highest concentration ( 1x108) the bacterial isolate Bt –B33 was the most toxic which killed 53% of the land snail M. cantiana after two weeks from treatment and 73.3% and 86.4% after three and four weeks of experiment
Keywords: land snails, Monacha cantiana, Eobania vermiculata, isolates,Bacillus thuringiensis, percentage mortality.
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