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Journal of Experimental Biology 17,262-266 (1940)
Published by Company of Biologists 1940

A Change in the Chromatophore Pattern of Crustacea at Sexual Maturity

F. G. W. KNOWLES D.PHIL.¹ and H. G. CALLAN B.A.²

¹ Department of Zoology and Comparative Anatomy, Oxford
² Stazione Zoologica, Naples, Italy

1. White chromatophores appear on the egg-bearing segments of female prawns and shrimps at sexual maturity.

2. Such chromatophores do not appear in the females whose gonads have been destroyed by X-rays or by parasites.

3. It is probable that this appearance of white chromatophores at sexual maturity is correlated with the metabolic changes occurring at yolk deposition in the ovaries.