A report of Physa acuta presence from Jajrood River, east of Tehran province

Molluscs are among the most important group of agricultural plant pests. Physa acuta, as an invasive species in horticulture, vegetables and specially rice farms takes a serious attention. In this study, through sampling from four pints in Jajroud River including Fasham, Saeed Abad, Khojir and Pakdasht, the species was reported from all the sampling points. There were no samples collected in summer season and samples collected in spring and autumn showed no significant difference in morphological features. The presence of the species would be considered as an alarm for further invasion to farms and gardens along the riverside.