The BSE benchmark index Sensex which declined by over 106 points in early trade, recovered marginally and was trading down 77 points at 17, 180 points a short while ago.Similarly, the wide-based National Stock Exchange index Nifty shed over 25 points to 5,2, 27.The rupee declined further and lost 41 paise to 51 rupees 10 paise against the US dollar in the late morning trade due to month-end demand for the American currency from importers amid strong global cues.Meanwhile, crude oil dipped in Asian trade today over concerns that a possible spike in US crude inventories signalled declining demand in the world's biggest economy. New York's main contract, West Texas Intermediate crude for delivery in May, shed 45 cents to 106 US dollars 88 cents per barrel.