Sex Control by Bees: A Voluntary Act of Egg Fertilization during Oviposition

See allHide authors and affiliations

Science  02 Jan 1970:
Vol. 167, Issue 3914, pp. 82-84
DOI: 10.1126/science.167.3914.82


The alfalfa leaf-cutter bee, Megachile rotundata, stops abdominal contractions briefly during oviposition of female eggs but not during oviposition of male eggs. Sperm stored in the spermatheca probably is pumped onto the micropyle of the egg during this pause. The stimulus inducing fertilization seems to be associated with the depth of the nesting tunnel.

Stay Connected to Science