EVALUTION OF THE ECONOMIC IMPORTANCE OF TERRESTRIAL GASTROPOD SPECIES USING SOME ECOLOGICAL PARAMETERS IN DAKAHLIA GOVERNORATE

Document Type : Original Article

Author

Plant Protection Institute, Agric., Res., Center Gizza, Egypt.

Abstract

Field studies were conducted in seven districts representing Dakahlia
Governorate, during 2003 , 2004 seasons to determine the economic importance
value of land snail and slug species infesting major crops using some ecological
parameters.
Results revealed that Eobania vermiculata Muller achieved the highest
economic importance value species (48.761), whereas Monacha cartusiana Muller
ranked the second with value of (46.852), followed by Limax f1avus with (45.974),
Helix ap < /em>erta Born. (40.887), Succinea putris L. (21.357), Succinea oblonga
Draparnaud (20.032), Cepaea hortensis Muller (16.596), Deroceras reticula tum Muller
(16.9), Deroceras laeve Muller (14.231), Lehmannia marginata Muller (10.055),
Cochilcel/a acuta Muller (9.409) and Oxychilus al/iarius Muller (5.722) the species
Ruminna decol/ata L. showed the least economic importance value (3.224). An
importance value of any land snail and slug species differed according to plant
species and time of the year (season).

Keywords