RT Journal Article T1 Estudio morfológico y microestructural de Crassostrea gigas en estuarios y puertos deportivos del oeste de la costa de Bizkaia T1 Morphologycal and microstructual study of Crassostrea gigas in stuaries and yachting harbours of the westernBiscay coast A1 Ibisate, Ruth A1 Elorza, Javier AB This work analyses the morphology and the microstructural characteristics of some specimens of Crassostreagigas collected in diferents points of the Biscay coast. Oysters recollected in yachting harbours, where theyare in contact with tributyl-tin (TBT), have morphologycal and microstructural shell anomalies. The presenceof TBT in the sea water and the associated shell anomalies in oyster are more obvious and detectables inspring because of the maintenance of the ships. In other sampling areas, although the bivalves have notshown any malformations, other morphologycal variations associated to the abundance of nutrients havebeen determinated YR 2007 FD 2007 LK http://hdl.handle.net/10272/8357 UL http://hdl.handle.net/10272/8357 LA spa DS Repositorio Institucional de la Universidad de Huelva RD 28 may 2026