On the Consistency of Sexy-Son Models: A Reply to Kirkpatrick

1989 ◽  
Vol 134 (6) ◽  
pp. 978-981 ◽  
Author(s):  
James W. Curtsinger ◽  
I. Lorraine Heisler
Keyword(s):  
Sexy Son

A Diploid "Sexy Son" Model

1988 ◽  
Vol 132 (3) ◽  
pp. 437-453 ◽  
Author(s):  
James W. Curtsinger ◽  
I. Lorraine Heisler
Keyword(s):  
Sexy Son

Does the "Sexy Son" Hypothesis Apply to Mate Choice in Red-Winged Blackbirds?

1981 ◽  
Vol 117 (3) ◽  
pp. 343-348 ◽  
Author(s):  
William A. Searcy ◽  
Ken Yasukawa
Keyword(s):  
Mate Choice ◽  
Sexy Son

scholarly journals Evolution of frequency-dependent mate choice: keeping up with fashion trends

2007 ◽  
Vol 274 (1615) ◽  
pp. 1317-1324 ◽  
Author(s):  
Hanna Kokko ◽  
Michael D Jennions ◽  
Anne Houde
Keyword(s):  
Social Evolution ◽  
Low Frequency ◽  
Folk Theorem ◽  
Unexpected Result ◽  
Frequency Dependent ◽  
Female Preferences ◽  
Sexual Traits ◽  
Offspring Generation ◽  
Sexy Son ◽  
Significant Mortality

The diversity of sexual traits favoured by females is enormous and, curiously, includes preferences for males with rare or novel phenotypes. We modelled the evolution of a preference for rarity that yielded two surprising results. First, a Fisherian ‘sexy son’ effect can boost female preferences to a frequency well above that predicted by mutation–selection balance, even if there are significant mortality costs for females. Preferences do not reach fixation, however, as they are subject to frequency-dependent selection: if choosy females are too common, then rare genotypes in one generation become common, and thus unattractive, in the offspring generation. Nevertheless, even at relatively low frequency, preferences maintain polymorphism in male traits. The second unexpected result is that the preferences can evolve to much higher frequencies if choice is hindered, such that females cannot always express their preferences. Our results emphasize the need to consider feedback where preferences determine the dynamics of male genotypes and vice versa. They also highlight the similarity between the arbitrariness of behavioural norms in models of social evolution with punishment (the so-called ‘folk theorem’) and the diversity of sexual traits that can be preferred simply because deviating from the norm produces unattractive offspring and is, in this sense, ‘punished’.

Mixed mating strategies by females weaken the sexy son hypothesis

1994 ◽  
Vol 47 (5) ◽  
pp. 1207-1209 ◽  
Author(s):  
Richard H. Wagner
Keyword(s):  
Mating Strategies ◽  
Mixed Mating ◽  
Sexy Son

Male Quality and Polygyny: The "Sexy Son" Hypothesis Revisited

1981 ◽  
Vol 117 (3) ◽  
pp. 329-342 ◽  
Author(s):  
James F. Wittenberger
Keyword(s):  
Male Quality ◽  
Sexy Son
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