Chapter 9 Opener: When a bull elk bugles, other males listen.
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Transcript of Chapter 9 Opener: When a bull elk bugles, other males listen.
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Chapter 9 Opener: When a bull elk bugles, other males listen
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9.1 The pseudopenis of the female spotted hyena can be erected
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9.2 Concentrations of testosterone in male and female spotted hyenas (Part 1)
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9.2 Concentrations of testosterone in male and female spotted hyenas (Part 2)
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9.3 A cost of the pseudopenis for female spotted hyenas
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9.4 Competition for food among spotted hyenas may favor highly aggressive individuals
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9.5 Dominance greatly advances female reproductive success in the spotted hyena
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9.6 Ultrasonic communication
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9.7 Evolution of a sensory system
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9.8 Arthropod gills have evolved into many different structures with different functions (Part 1)
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9.8 Arthropod gills have evolved into many different structures with different functions (Part 2)
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9.9 Evolutionary precursors of insect wings?
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9.10 A surface-skimming stonefly
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9.11 A possible evolutionary pathway from swimming to full flight in the stoneflies
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9.12 An ancestral signal has been co-opted in some bowerbirds
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9.13 Sensory exploitation and the evolution of a courtship signal in Neumania papillator
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9.14 Two evolutionary scenarios for the evolution of male courtship trembling in Koenikea (Part 1)
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9.14 Two evolutionary scenarios for the evolution of male courtship trembling in Koenikea (Part 2)
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9.15 A female cichlid fish (left) is attracted to the anal fin of a male by the orange spots on the fin
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9.16 Food, carotenoids, and female mate preferences in the guppy
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9.17 Sexual preferences for orange spots match foraging preferences by female guppies
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9.18 The response of least auklets to three novel artificial signals
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9.19 Receivers can respond to an ancestral signal not present in their species
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9.20 Sensory exploitation and swordtail phylogeny
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9.21 Mate preferences for a novel ornament
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9.22 The panda principle is evident in the sexual behavior of a parthenogenetic whiptail lizard
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9.23 A group of ravens feeding on a carcass to which they were attracted by a yelling companion
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9.24 Yelling is a recruitment signal
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9.25 Predation risk has affected the evolution of begging calls in warblers (Part 1)
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9.25 Predation risk has affected the evolution of begging calls in warblers (Part 2)
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9.26 Testosterone affects begging rate and feeding rate in black-headed gull chicks
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9.27 An honest signal of hunger?
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9.28 The European cuckoo chick’s begging call matches that of four baby reed warblers (Part 1)
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9.28 The European cuckoo chick’s begging call matches that of four baby reed warblers (Part 2)
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9.29 The cuckoo’s begging calls stimulate more frequent feeding by its host parents
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9.30 Illegitimate receivers can detect the signals of their prey (Part 1)
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9.30 Illegitimate receivers can detect the signals of their prey (Part 2)
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9.31 Great tit alarm calls
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9.32 Hearing abilities of a predator and its prey
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9.33 Convergent evolution in a signal
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9.34 Deep croaks deter rivals
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9.35 Threat displays are energetically demanding in the side-blotched lizard (Part 1)
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9.35 Threat displays are energetically demanding in the side-blotched lizard (Part 2)
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9.36 Convergent threat displays
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9.37 Antler span in two New Guinean fly species provides accurate information about body size
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9.38 An honest signal
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9.39 A firefly femme fatale
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9.40 A deceptive signaler