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handle: 10261/313295 , 10508/1441
Se ha realizado el engorde, en la zona intermareal de un parque de cultivo en el río carreras (suroeste de la península Ibérica), de un lote de almejas japonesas Ruditapes philippinarum (Adamsampersand Reeve, 1850) con el 25 % de individuos con deformaciones en las valvas originadas durante la fase de preengorde, que se había realizado en recipientes con flujo forzado ubicados en una batea. Se han sembrado en una calle de 13,00 m ˟ 1,50 m, paralela al cauce del estero, a la densidad de 1.700 indiv/m², en un nivel de cobertura mareal correspondiente a una bajamar de marea viva. El cultivo comenzó cuando la semilla medía aproximadamente 20 mm, y, transcurridos diez meses, se han obtenido 14,50 kg/m², equivalentes a 1.070 indiv/m², de los que el 23 % carecen de valor comercial por presentar malformaciones en las valvas; mientras, el resto proporciona un rendimiento económico que supera los 98 €/m² en primera venta (con el 40 % de almejas con signos de haber recuperado el crecimiento habitual).
A batch of Manila clams Ruditapes philippinarum (Adamsampersand Reeve, 1850), prefattened in a raft with airlifts, was sown when they reached a length of 20 mm, having a shell deformation rate of 25 %, in the intertidal zone. The experimental culture has been carried out in a plot of 13 m ˟ 1,5 m, located in a lowwater spring tide (LWS), with a density of 1.700 indiv/m². After 10 months, 14,5 kg/m² was harvested, equivalent to 1.070 indiv/m², of which 23 % were not marketable due to deformations, and the rest had an economic yield that topped 98 €/m² for the first sale.
Instituto Español de Oceanografía
almeja, Acuicultura, zona intermareal, Crecimiento anormal, anomalías en las valvas, rendimiento
almeja, Acuicultura, zona intermareal, Crecimiento anormal, anomalías en las valvas, rendimiento
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