Field Trials on Land Gastropods Infesting some Ornamental Plants at Kafr El-Sheikh Governorate

Abstract

Land molluscs became one of the most serious pests attacking many plants including ornamental plants. Occurrence of certain land gastropods associated with some ornamental plants at Kafr EL-Sheikh Governorate was conducted. Results revealed that the land snails, Eobania vermiculata and Succinea putris and the land slug Deroceras reticulatum were recorded on the tested plants. E vermiculata was the predominant species while the other identified gastropods showed lower infestation levels. Therefore ,the seasonal abundance of the predominant snail, E vermiculata was studied and results showed that the population of E vermiculata was increased during spring months (171.99 snails/ 1 / 2 m 2 ) as compared to summer and autumn (149,34 and 59,33),respectively whereas the infestation was the least during winter (40.67 snails/ 1 / 2 m 2 ). Malabar was superior among the tested plants since it attracted the highest number of snails with mean of (5.68 ± 1.56) snails/ 1 / 2 m 2 followed by Hlibiscus, basil, kockia, DustyMiller, Manitoka and Royal palm, respectively. Both of Pricharida and Duranta were the least attractive to snails. Concerning the efficacy of certain pesticides against E vermiculata under field conditions, Data revealed that Agrinate was more toxic to snails than the other pesticides, since it achieved the highest reduction percentage of snail population of (69.03 ± 7.2 ) % followed by Vicarb with reduction of (55.87 ± 6.8)% while Uphold was the least in this respect with reduction percentage of (25.41±2.6)%.

Impact of contamination on biology, biochemical, and histology ofEobania vermiculataandMonacha obstructaduring different seasons in Ismailia, Egypt

“…Theba pisana and E. vermiculata were the most abundant in all regions, while M. obstructa snails were found at relatively low population densities. Shahawy (2019)also reported that E. vermiculata was the predominant species in Kafr El-Sheikh governorate on ornamental plants and was recorded on all surveyed plants in relatively high numbers. However, the present data disagrees with that reported by Rady et al (2014), who stated that the M. cartusiana land snail was the predominant species in the fields of vegetable crops in the Ismailia and Sharkia governorates.…”

Efficiency Evaluation of Two Chemical Pesticides and a Biocide for Controlling Eobania vermiculata Snails Infesting Guava Orchards

“…In the field trial carried out by Khidr (2019) in citrus orchards using methomyl, it was proved that the tested compound achieved a population reduction of E. vermiculata by 64.48 % and M. obstructa by 91.31%. Moreover, Shahawy (2019) revealed that Agrinate (methomyl 24 % W.P) was toxic to E vermiculata snails under field conditions, since it achieved the reduction percentage of snail population by 69 %. 2014) estimated the two application methods, spray and poisonous baits of methomyl against M. cartusiana and they indicated that the tested compound was practicable to reduce numbers of snails in Egyptian clover fields.…”

Influence of some environmental factors on the biology of two terrestrial snails, Monacha obstructa (Pfeiffer) and Eobania vermiculata (Müller), under laboratory conditions

“…Singled out-that, the glassy clover snail, M. obstructa (Muller) which is the major species found infested wide range of crops at most localities of Egypt. Individuals of this species cause heavy damage to economically important crops (Abdel-Aal, 2007;El-Masry,1997;Mahrous et al, 2006;Lokma, 2007;Nakhla et al, 1995;Shahawy et al, 2008). These snails have active dispersal capabilities, which enable it to successfully expand its range to new habitats (El-Okda, 1981).…”