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Errors in the Sex of Eggs Laid by the Solitary Bee Osmia rufa (Megachilidae)

Anthony Raw and Christopher O'Toole
Behaviour
Vol. 70, No. 1/2 (1979), pp. 168-171
Published by: Brill
Stable URL: http://www.jstor.org/stable/4533985
Page Count: 4
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Errors in the Sex of Eggs Laid by the Solitary Bee Osmia rufa (Megachilidae)
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Abstract

From calculations based on cell lengths and the locations of cells in nests it was estimated that failures in fertilization of eggs of the solitary bee Osmia rufa resulted in 6% more adult males in the population. After adjustment the sex ratio was almost exactly par. /// Aus Berechnungen aufgrund von Zellängen und der Lage der Brutzellen in Nestern der solitären Biene Osmia rufa wurde geschätzt, dass teilweises Misslingen der Befruchtung der Eier 6% mehr erwachsene Männchen in der Population ergab. Nach Berichtigung waren die Geschlechteranteile annähernd gleich.

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