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Third Bangalore School on Population Genetics and Evolution
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Kavita Isvaran
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Elaborate characters may evolve as a result of
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Historically - emphasis on male traits
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EMPIRICAL EVIDENCE
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Is sexual selection then not an important evolutionary process in females?
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Sex role reversal
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Bateman gradient steeper in females in pipefish
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Sexual selection on female body size in Bronze-winged jacana
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Is sexual selection on females limited to rare cases of sex-role reversal?
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Increasing evidence for widespread sexual selection in females
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A typical female visit to a lek
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Mating patterns on leks - controversial
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Probability of successful mating decreases with female aggression
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Females compete aggressively for preferred males in topi
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Who competes and who chooses? Sex roles flexible
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Weapons and ornaments
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Sexual Selection re-defined
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Social Selection
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2. Signalling and Aggression in female rock lizards
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Male signalling
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Female signalling
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Signalling and aggression in females
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Field experiments
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Aggression substantially increases with threat
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Signalling sensitive to threat
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Comparing communication and competition strategies How do females and males use the available behavioral and visual signal repertoire?
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Sexual selection in females: where do we stand?
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ACKNOWLEDGEMENTS
Description:
Explore the fascinating world of sexual selection in females through this 37-minute lecture by Kavita Isvaran from the International Centre for Theoretical Sciences. Delve into the historically overlooked topic of female sexual selection, examining empirical evidence and case studies that challenge traditional views. Learn about sex role reversal, female competition for mates, and the evolution of elaborate female traits. Discover how female aggression impacts mating success in various species, from topi antelopes to rock lizards. Gain insights into the flexibility of sex roles, the redefinition of sexual selection, and the concept of social selection. Analyze field experiments on female signaling and aggression, and compare communication strategies between males and females. Conclude with a comprehensive overview of the current understanding of sexual selection in females, broadening your perspective on evolutionary biology and animal behavior.

Sexual Selection in Females by Kavita Isvaran

International Centre for Theoretical Sciences
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