Testosterone and carotenoids: An integrated view of trade-offs between immunity and sexual signalling
Article Abstract:
The effects of the dual action of testosterone and the competition for carotenoids on the allocation tradeoffs with the immune system that signals honesty in the sexual relationships are studied. The analysis clearly indicates that the testosterone treatment upregulates the circulating lipoproteins, in addition to an increase in the bio-availability of carotenoids, which enhances the sexual coloration.
Publication Name: BioEssays
Subject: Biological sciences
ISSN: 0265-9247
Year: 2007
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Animal allure and health linked by plants pigments
Article Abstract:
Carotenoid-based ornaments that comprise of secondary sexual traits are considered as particularly good candidates for explaining why and how females would benefit from mating with showy partners. Two recently conducted experiments on birds indicate that the allocation of bodily cartenoids to sexual signaling is dealt against the use of carotenoids for boosting the immune function.
Publication Name: BioEssays
Subject: Biological sciences
ISSN: 0265-9247
Year: 2003
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Regulation of male traits by testosterone: Implications for the evolution of vertebrate life histories
Article Abstract:
The physiological mechanisms underlying the optimal allocation rules and also the evolution of such rules are discussed. The case-studies supporting the evolutionary potential hypothesis and the involvement of testosterone in controlling traits are analyzed and micro-evolutionary experiments are used to reveal the mechanistic basis of life-history evolution.
Publication Name: BioEssays
Subject: Biological sciences
ISSN: 0265-9247
Year: 2007
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