Frequency-Dependent Mate Selection in Mormoniella vitripennis

OLFACTORY CUES AS A FACTOR IN FREQUENCY-DEPENDENT MATE SELECTION INMORMONIELLA VITRIPENNIS

“…Unlike the previous work on frequencydependent mate selection in Mormoniella (Grant et al, 1974), the data accumulated here are asymmetric. The experimental method employed here differed from earlier efforts with respect to two variables: the air blown across the wasps and a mating chamber of one-half the volume.…”

“…The advantage of the rare male has since been described in eight more species of the genus Drosophila; D. equinoxialis, D. junebris, D. gaucha, D. immigrans, D. pavani, D. persimilis, D. tropicalis, and D. willistoni (Ehrman and Petit, 1968;Ehrman, 1966Ehrman, , 1972bEhrman et al, 1972;Spiess, 1968;Spiess and Spiess, 1969;and Borisov, 1970); the parasitic wasp Mormoniella vitripennis (Grant et al, 1974); and suggested in the red flour beetle Tribolium castaneum (Sinnock, 1970). Females have been shown to possess the ability to distinguish a variety of differences among conspecific males, e.g., strains of males carrying different chromosomal inversions, of different geographic origins, reared at different temperatures, and wild versus mutant types (Ehrman, 1967(Ehrman, , 1970bPetit and Ehrman, 1969).…”

“…This paper represents a preliminary examination of the controlling factors of frequency-dependent mate selection, described by Grant et al (1974), in the parasitic wasp Mormoniella vitripennis.…”

Sexual selection and the evolution of preferential mating in ladybirds I. Selection for high and low lines of female preference

“…The "rare male effect" so very often observed in experiments in which females are offered a choice between two different male genotypes or phenotypes will almost inevitably occur when females have specific mating preferences: rare males are preferred by a relatively greater proportion of females than common males; the selection is negatively frequency-dependent, becoming weaker as the preferred males become more common. This "rare male effect" has been observed very commonly in Drosophila (Ehrman, 1967;1970;1972;Spiess, 1968; 1969; Spiess and Ehrman, 1978), in a parasitic wasp Mormoniella vitripennis (Grant, Snyder and Glessner, 1974), in the guppy (Farr, 1977) and in the Two-spot Ladybird (Muggleton, 1979;O'Donald and Muggleton, 1979; O'Donald and Weir, l982a).…”

Non-random mating in natural populations of the seaweed fly, Coelopa frigida

“…Often the assortment is with respect to colour (Cooch and Beardmore, 1959;Grant et a!., 1974;Barlow and Rogers, 1978;O'Donald, 1980;Majerus et a!., 1982a;Cooke and Davies, 1983), but may involve a variety of characters such as allozymes (Sassaman, 1978), time of breeding * Present address: School of Biological Sciences, University of East Anglia, Norwich NR4 7TJ.…”