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Biol Bull 97: 287-299. (December 1949)
© 1949 Marine Biological Laboratory
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THE GROWTH AND METAMORPHOSIS OF THE ARBACIA PUNCTULATA PLUTEUS, AND LATE DEVELOPMENT OF THE WHITE HALVES OF CENTRIFUGED EGGS

ETHEL BROWNE HARVEY 1

1 Marine Biological Laboratory, Woods Hole, and the Biological Laboratory, Princeton University

1. The growth and metamorphosis of the Arbacia punctulata pluteus after the four day stage has been traced by means of photographs. The plutei were raised on the diatom, Nitzschia closterium.

2. The pluteus from the white half egg develops pigment spots after the third day, and develops in exactly the same way as that from the whole egg, when fed Nitzschia.

3. The pluteus from the centrifuged, stratified, egg becomes like that from the normal egg after the third day and develops similarly when fed.






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