Abstract
The sperm content of the spermatheca was examined in eleven species of yellowjacket queens collected in the spring of 1987–1989. The sperm count data were highly correlated ( r = 0.84) with total cell numbers of mature nests reported for 10 species. Sperm content varied within and among species with mean numbers of sperm ranging from a low of 3,200 ± 600 in Vespula consobrina in 1988, to a high of 176,000 ± 46,200 in Vespula squamosa , the same year. The implications of mating success and initial sperm quantity variability are discussed.
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