(Updates prices, adds market strategist’s quote) By Agamoni Ghosh April 15 (Reuters) – Lower oil prices dragged down currencies of Latin American oil exporters on Monday, while stocks edged lower in light trading in a holiday-shortened work week. MSCI’s index of Latin American currencies fell for a third straight session, pulled down by currencies of net crude exporters in the region, with Mexico’s peso coming off four-week highs. Stocks also slid with Colombia’s IGBC index leading losses with energy firm Ecopetrol SA shedding over 1 percent. “Equities and currencies were trading light. It’s going to be very quiet this week given the holiday overhang,” said Christian Lawrence, Latam FX strategist at Rabobank. Most Latin American markets will be closed on Thursday and Friday for