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Biol Bull 119: 145-152. (August 1960)
© 1960 Marine Biological Laboratory
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EXPERIMENTAL STIMULATION OF GAMETOGENESIS IN HYDROIDES DIANTHUS AND PECTEN IRRADIANS DURING THE WINTER

HARRY J. TURNER JR. 1 and JAMES E. HANKS 1

1 Woods Hole Oceanographic Institution, Woods Hole, Massachusetts

1. Temperatures approximating those existing during the normal summer reproductive period will stimulate gametogenesis in Hydroides dianthus and Pecten irradians if artificially imposed during the coldest winter months.

2. H. dianthus will produce mature gametes in ten days if held in aerated sea water at 23° C. and fed adequate quantities of Phacodactyllum tricornutum.

3. P. irradians may produce gametes that appear to be mature on histological examination in three weeks if held in running sea water warmed to 23° C. but in many cases development fails to go to completion.

4. Failure of gametogenesis to reach completion in some specimens of P. irradians may be due to inadequate food supply under the conditions of the experiment.






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Copyright © 1960 by the Marine Biological Laboratory.