Africa-focused Panoro Energy will take part in Equatorial Guinea's oil and gas auction in April as it hunts for new assets after increasing its stake in the country's offshore Block G, its executive chairman said on Friday.Panoro this week acquired an additional 40.3% interest in Block G from Kosmos Energy, making it the largest shareholder in the block, which is operated by Trident Energy.Block G contains the Ceiba field and the Okume complex…