This work was conducted to evaluate the molluscicidal activity of Kz mineral oil compared to methomyl insecticide against one of the most serious land snails; white garden snail Theba pisana under laboratory conditions. The toxicity changes in juveniles and adults of T. pisana snail treated with three concentrations (1.25, 2.5 and 5 %) for Kz oil and (0.031, 0.063 and 0.125 %) for methomyl were evaluated using dipping technique of lettuce and cabbage leaves. Results indicated that the tested concentrations of Kz oil had toxic effect on both juveniles and adults increasing with time passage and concentration. The highest mortality percentage obtained with Kz (5%) recorded (53.33 %) and (46.67 %) for juveniles & adults with lettuce leaves, respectively however the same concentration gave (40%) and (26.67%) mortality for juveniles & adults with cabbage leaves, respectively after three weeks post treatment. Regarding to methomyl pesticides, the toxicity effect increased also by time passage and concentration where the highest mortality in both juveniles & adults recorded (66.67% & 46.67 %), respectively when lettuce leaves are dipped in 0.125 % methomyl. Treatment with all concentrations of Kz oil and methomyl exhibited remarkable reduction in amylase and invertase activities compared to control. Furthermore, Kz oil showed very low toxic effect to adults of Apis mellifera by feeding whereas, toxicity was almost non-exist when bees were in contact with treated leaves.
Survey, population structure of some land snails' species in five different localities at Zagazig district, Sharkia Governorate were studied. A field survey was carried out at Sharkia Governorate in Sheeba, Banayous, El-Aslogy, Kafr El-Hosor and Kafer El-Zagazig villages during the period from November 2013 to May 2014. Results revealed that only two species of terrestrial snail were found, Monacha cartusiana that showed a very wide distribution range in all surveyed villages than Succinia putris which appeared only in Kafer El-Zagazig. Highly dense population of snails were found on the Egyptian clover, followed by lettuce, cabbage while wheat, maize and rice showed less numbers. The initial infestation of the Egyptian clover with M. cartusiana was appeared in September with low numbers (1.33 and 4.33 snails) per quadrate sample, reaching its maximum in April with values of 64.80 and75.80 per quadrate sample during the growing season of 2013/2014 and 2014/2015, respectively. Population dynamics of adults and juveniles M. cartusiana fluctuated during the different seasons, whereas population density remained at partially low numbers during winter months, gradually increased during spring till reached a peak of 40.40 and45.80 snails/0.25m 2 by the beginning of April for juveniles and of 37.80 and43.20 snails/0.25m 2 for adults in mid-April during 2013/2014 and 2014/2015, respectively. It declined thereafter during Sept. and Oct.(0.0,1.3 and 0.0, 4.3)and (0.0,6.67and0.0, 11.33 snails/0.25m 2), for juvenile and adult snails during 2013/2014 and 2014/2015 respectively. In addition, there is no definite correlation between temperature or relative humidity and population density of M. cartusiana during the two successive growing seasons.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.