Abstract
THE stick insect Carausius morosus Br. reproduces parthenogenetically. However, non-functional males appear spontaneously by loss of a sex-chromosome. This occurs with a frequency of about 0.5 per cent at 16°–20° C. Sexually aberrant individuals showing gynandromorphism and/or intersexuality are also found at frequencies of up to about 2 per cent. Higher percentages of ‘non-females’ are obtained when eggs are treated with high temperatures or X-rays1–3. The following experiment shows that centrifugation of the eggs may also influence the sex of C. morosus.
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References
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PIJNACKER, L. Effect of Centrifugation of the Eggs on the Sex of Carausius morosus Br.. Nature 210, 1184–1185 (1966). https://doi.org/10.1038/2101184a0
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DOI: https://doi.org/10.1038/2101184a0
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