Figure 10.5 Variance in reproductive success is greater for males than for females in the satin bowerbird Figure 10.6 Male and female gametes differ greatly in size Gowaty 2003 Roughgarden 2004 Roughgarden 2004 Figure 10.8 Differences between the sexes in sexual behavior may arise from fundamental differences in parental investment that affect the rate at which individuals can produce offspring Rough-skinned newts! Figure 10.16 Running speed in collared lizards is the product of sexual selection Figure 10.18 Dominance and mating success in savanna baboons Figure 10.19 Dominance affects male paternity in savanna baboons Figure 10.26 Three different forms of the sponge isopod: the large alpha male, the female-sized beta male, and the tiny gamma male Figure 10.27 Three different egg fertilization behaviors coexist in the bluegill sunfish Figure 10.22 Large horns means smaller testes Figure 10.28 Copulation in the black-winged damselfly enables the male to remove a rival’s sperm before transferring his own Figure 10.29 Sperm competition has shaped the evolution of the black-winged damselfly’s penis Figure 10.35 Adaptive mate guarding by the Seychelles warbler Figure 10.32 Female collared flycatchers could bias egg fertilizations in favor of an extra-pair mate Figure 14.22 Testing alternative hypotheses for rape Figure 10.38 A potential nuptial gift Figure 10.39 Sperm transfer and the size of nuptial gifts Figure 10.42 A sexually selected ornament Figure 10.43 Male satin bowerbirds provide females with multiple signals that are indicators of their health and physiological condition Figure 10.44 Do male ornaments signal good genes? Figure 10.45 Peacocks with many eyespots tend to be healthier than those with fewer eyespots, judging from the lower concentrations of heterophils in their blood Fig. 6.18 1994 Figure 9.15 A female cichlid fish (left) is attracted to the anal fin of a male by the orange spots on the fin Figure 9.17 Food, carotenoids, and female mate preferences in the guppy Figure 9.18 Sexual preferences for orange spots match foraging preferences for orange foods by female guppies Figure 9.21 Mate preferences for a novel ornament Figure 9.19 The response of least auklets to three novel artificial signals Jones and Hunter 1998 Figure 9.13 Sensory exploitation and the evolution of a courtship signal in the water mite Neumania papillator Figure 9.14 Two evolutionary scenarios for the evolution of male courtship trembling in water mites Figure 9.22 Sensory exploitation and swordtail phylogeny Figure 10.47 Chase-away selection theory Figure 10.48 Sexual selection and the evolution of male traits harmful to females Holland and Rice 1998 Holland and Rice 1998 Rice 1996 Holland and Rice 1998