Parasitized female guppies do not prefer showy males
Article Abstract:
The sexual characteristics of many species are known to be negatively affected by parasites which make hosts unattractive to females, but the mating decisions of parasitized females have been little researched. A new study investigates the mating choices of female guppies exposed to the parasite Gyrodactylus turnbulli, known to reduce the colour intensity and sexual display of male fish. The study shows that infected female guppies are less partisan than healthy ones and they also show a reduced level of activity during mate choice. The results suggest a diminished sexual selection pressure for male showiness.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 1999
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Operational sex ratio influences female preference and male-male competition in guppies
Article Abstract:
Changes to the operational sex ratio (OSR) in guppies can influence competition between male and female mate choice. A new study investigates the effects of OSR on male-male competition and female mate choice. It is shown that OSR influences different modes of sexual selection and reveals that both types of sexual selection are important generators of sexual selection but only mate choice causes an increase in the rate of change of orange coloration in male guppies.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 1999
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Sexual conflict over mating system: the case of a pair-territorial filefish without parental care
Article Abstract:
Research describing the optimal mating systems of the longnose filefish, Oxymonacanthus longirostris, is presented. It is shown that the mating system is the result of sexual conflict between the monogamous female and the polygynous male.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 2001
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