FIRST RECORD OF THE ASIAN CLAM Corbicula largillierti (PHILIPPI, 1844) IN THE LOWER SÃO FRANCISCO RIVER, NORTHEASTERN BRAZIL

The Asian clam of the genus Corbicula is most successful freshwater invader worldwide. In this research note, presence largillierti recorded for first time in Lower São Francisco River. This record based on collection living organisms from Xingó Hydroelectric Power Plant reservoir. second corbiculid species region. Further investigation required characteristics such as its distribution, interactions with native and other invasive species, well possible environmental impact.