This work presents the fatty acids methyl esters (FAME) profile of neogastropod species Babylonia spirata from Manora Channel, the area subjected to intensive shipping activity. A total of 39 compounds including fatty acids methyl esters (FAME), dimethyl acetals (DMA) of fatty aldehydes, non-methylene-interrupted (NMI) acids were separated and identified in digestive gland/ gonad complex of males, morphologically normal females and imposex females (imposition of male sex characters onto females). Variability in components of saturated, monounsaturated (MUFA) and polyunsaturated (PUFA) fatty acids profiles was observed in males, females and imposex females. Increasing levels of MUFA fatty acids were observed in imposex females. The effect of organotin contamination on the accumulation and alteration of lipids and FAME composition has not been extensively investigated. This is the first report of FAME analysis of this species from Pakistan.
