A 'G' chromosome banding study of three cupped oyster species: Crassostrea gigas, Crassostrea angulata and Crassostrea virginica (Mollusca: Bivalvia) Alexandra Leitão, Catherine Thiriot-Quiévreux, Pierre Boudry and Isabel MalheiroGenet. Sel. Evol., 31 5-6 (1999) 519-527DOI: https://doi.org/10.1051/gse:19990507