Abstract
THE hermaphrodite gland of the slug Arion ater rufus is pigmented, and changes in the degree of pigmentation are correlated with the sexual stages in the gland1. In the early stages of development the hermaphrodite gland is translucent, but during spermatogenesis it becomes opaque and grey in colour, at the oocyte stage dark brown and ultimately, after oviposition, black. The final dense pigmentation is due partly to a gradual increase in the amount of pigment, partly to concentration of existing pigment by shrinkage of the gland.
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LŪSIS, O. Pigment of the Hermaphrodite Gland of Arion ater rufus L.. Nature 194, 1191–1192 (1962). https://doi.org/10.1038/1941191a0
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DOI: https://doi.org/10.1038/1941191a0
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