Abstract
IN butterflies, the sex ratio is 1 : 1, or nearly so. Random collections often show a slight excess of males over females, because males are the more active and hence are more often seen and collected.
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OWEN, D. Change in Sex Ratio in an African Butterfly. Nature 206, 744 (1965). https://doi.org/10.1038/206744a0
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DOI: https://doi.org/10.1038/206744a0
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