Recuperación en el crecimiento normal de las ostras Crassostrea gigas en la Bahía de Santander (Cantabria): efectos de la prohibición del biocida TBT
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Abstract
El estudio morfológico y biométrico de las ostras Crassostrea gigas en
la Bahía de Santander (Cantabria) indica que la mayoría de estos bivalvos
exhiben actualmente patrones de crecimiento normales, en contraposición a
estudios previos, que indicaban desarrollo de anomalías en las conchas
debido a su exposición al tributilo de estaño (TBT), un aditivo presente en
pinturas antiincrustantes hasta su prohibición total en 2008. Por lo tanto, la
prohibición del agente químico ha tenido un efecto positivo en el ecosistema
marino, no detectándose efectos severos y rápidos de los nuevos
antiincrustantes, probablemente presentes en las aguas, sobre la concha de
las ostras
The morphological and biometrical study of the oyster Crassostrea gigas in the Santander Bay (Cantabria) indicates that most of the bivalve specimens exhibit normal shell growth patterns. This is in sharp contrast to previous studies, which showed shell abnormalities developed due to the exposition to tributyltin (TBT), an additive found in antifouling paints until its total ban in 2008. Therefore, the ban of the chemical has had a positive effect on the marine ecosystem, with no severe and quick effects of new antifoulings, probably present in the waters, on the oyster shells
The morphological and biometrical study of the oyster Crassostrea gigas in the Santander Bay (Cantabria) indicates that most of the bivalve specimens exhibit normal shell growth patterns. This is in sharp contrast to previous studies, which showed shell abnormalities developed due to the exposition to tributyltin (TBT), an additive found in antifouling paints until its total ban in 2008. Therefore, the ban of the chemical has had a positive effect on the marine ecosystem, with no severe and quick effects of new antifoulings, probably present in the waters, on the oyster shells







