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Biol Bull 96: 228-232. (June 1949)
© 1949 Marine Biological Laboratory
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OVARIAN INHIBITION BY A SINUS-GLAND PRINCIPLE IN THE FIDDLER CRAB

FRANK A. BROWN JR. 1 and GWEN M. JONES 1

1 Department of Zoology, Northwestern University, and the Marine Biological Laboratory, Woods Hole, Mass.

1. Removal of the eyestalks of adult females of Uca pugilator results in a period of rapid ovarian growth in which the increase in fresh weight of the gonad is approximately five-fold in a thirty-day period.

2. The period of ovarian growth is characterized by increase in oöcyte diameter and a color change from light pink to a deep purple-red.

3. Implantation of sinus-gland tissue into the abdomens of destalked females serves to inhibit to a large degree this rapid growth.

4. Six of the animals which had been deprived of their eyestalks laid mature eggs during the course of the experiment; none of the controls did so. Eggs produced by the experimental animals failed to become attached to the pleopods.




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