REARING OF BIVALVE MOLLUSKS
31
trochophore stages, and then become so " sticky " that they adhere
to eaoh other and to the walls of the containers, particularly at the
FIQ, . 16. Largely norm81 (above) and abnormal (below) egga of En& dir&w. Abnormal
eegs were discharged by a female compelled by strong stimulation to 8p8w1-1 before
eggs were ripe. Normal egga vary from 64 to 73 p in diameter.
air-water-glass interface where they norrnally congregate in large
numbers.
With somewhat more advanced, but still not entirely ripe, oyster
31
trochophore stages, and then become so " sticky " that they adhere
to eaoh other and to the walls of the containers, particularly at the
FIQ, . 16. Largely norm81 (above) and abnormal (below) egga of En& dir&w. Abnormal
eegs were discharged by a female compelled by strong stimulation to 8p8w1-1 before
eggs were ripe. Normal egga vary from 64 to 73 p in diameter.
air-water-glass interface where they norrnally congregate in large
numbers.
With somewhat more advanced, but still not entirely ripe, oyster