Notes on Experiments on the Early Developmental Stages of the Portuguese, American and English Native Oysters, with Special Reference to the Effect of Varying Salinity.

Abstract

1. The period of time which the oyster larva requires to attain its respective developmental stages was measured and recorded in 0. virginica and 0. angulata. 2. The development in various concentrations of salinity was studied in the three species, 0. virginica, 0. angulata, and 0. edulis. 3. In optimum salinity, all the impregnated eggs undergo segmentation and further development; the rate of development is uniform and its progress speedy.