<A presença de espécies exóticas foi constatada na região Nordeste através da ocorrência de fêmeas dos camarões Penaeus monodon Fabricius, 1798, Litopenaeus vannamei (Boone, 1931) e do siri Charybdis hellerii (Milne Edwards, 1867), em processo de reprodução nos estados de Rio Grande do Norte, Pernambuco, Alagoas e Sergipe.>

The presence of nonindigeouns species off Northeast Brazil was ascertained through the occurrence of females of the shrimps Penaeus monodon Fabricius, 1798, Litopenaeus vannamei (Boone, 1931), and the crab Charybdis hellerii (Milne Edwards, 1867), on reproductive activity in coastal waters of the states of Rio Grande do Norte, Pernambuco, Alagoas and Sergipe.