Heritable true fitness and bright birds: a role for parasites?

@article{Hamilton1982HeritableTF,
  title={Heritable true fitness and bright birds: a role for parasites?},
  author={William D. Hamilton and Marlene Zuk},
  journal={Science},
  year={1982},
  volume={218 4570},
  pages={
          384-7
        }
}
Combination of seven surveys of blood parasites in North American passerines reveals weak, highly significant association over species between incidence of chronic blood infections (five genera of protozoa and one nematode) and striking display (three characters: male "brightness," female "brightness," and male song). This result conforms to a model of sexual selection in which (i) coadaptational cycles of host and parasites generate consistently positive offspring-on-parent regression of… 

Effects of predation, parasites, and phylogeny on the evolution of bright coloration in north american male passerines

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Passerine Polygyny: A Role for Parasites?

  • A. Read
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It is shown for European and North American passerine birds that the proportion of individuals infected with blood parasites is significantly lower in polygynous species than it is in monogamous species, suggesting that parasitic infection should be considered as a factor influencing passerine mating systems whichever way the causal arrow goes.

Sexual selection and the geography of Plasmodium infection in Savannah sparrows (Passerculus sandwichensis)

According to Hamilton and Zuk's hypothesis of parasite-mediated sexual selection, host-parasite coevolution maintains variation in male genetic quality and allows for strong intersexual selection in

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It is suggested that only a small fraction of host-parasite associations could promote the evolution of host mate choice for resistance based on brightness, and this work shows that because of parasite aggregation on a few hosts, only few breeding males would suffer from reductions in brightness.

Variation in susceptibility to parasite infection: patterns, determinants and consequences in red-fronted lemurs

Analysis of patterns and proximate determinants of gastro-intestinal parasite susceptibility in a wild population of red-fronted lemurs in Kirindy Forest, western Madagascar indicates an immune-enhancing effect of androgen and glucocorticoid levels, leading to a decrease in parasite species richness and nematode infection intensity.

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Hamilton and Zuk (1982) have expanded the genetic side of this hypothesis: for species in which parasitism and disease have substantial deleterious effects, females should select mates according to their perception of a male's genetic resistance to currently prevalent pathogens, as indicated by his general appearance and vigor.

Do blood parasites affect reproductive performance in male red bishops (Euplectes orix)? A test of the Hamilton-Zuk hypothesis

The data indicate that high stress levels as assessed by the heterophile/lymphocyte ratio might increase parasite susceptibility, but results do not support predictions derived from the Hamilton-Zuk hypothesis of parasite-mediated sexual selection.

Parasites and Sexual Selection: A Macroevolutionary Perspective

The Hamilton-Zuk hypothesis postulates a causal link between parasitism and the evolution of epigamic traits by intersexual selection, which is supported at the microevolutionary level if females show significant preference for lightly or uninfected males, and if intensity of infection reflects host resistance to parasites that depress host fitness by causing disease.

Parasite loads in parthenogenetic and sexual lizards (Heteronotia binoei) : support for the Red Queen hypothesis

It is reported that parthenogenetic individuals of the Heteronotia binoei species complex are much more prone to infection by mites than are their sexual relatives, which accords with a central prediction of the Red Queen hypothesis.
...

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