Abstract
DURING a visit to the Blackwater oyster beds in the summer of 1925, I had reason to open 100 Portuguese oysters (Ostrea (Grypha) angulata), and found them, as on previous occasions, practically all sexually mature. It occurred to me at the time to try an artificial fertilisation in the sea with the view of increasing the stock of oysters on the beds. As, however, the beds were private ones, it was thought inadvisable to take the risk without consulting the owners, and the opportunity of trying the experiment did not again arise. It has been recorded in NATURE (August 12, 1922, p. 213) that Portuguese oysters have spatted in the waters of the river Blackwater, Essex, on experimental shells put out for the definite purpose of catching young oysters, and also (loc. cit.) that artificial fertilisations of the Portuguese oyster can be easily made.
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ORTON, J. Can Portuguese Oysters be Produced on English Oyster Beds by Artificial Fertilisation in the Sea?. Nature 117, 857 (1926). https://doi.org/10.1038/117857a0
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DOI: https://doi.org/10.1038/117857a0
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