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Carotenoid Pigments and Reproduction in Wetland-Dependent Blackbirds
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Outline
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Sexual Signals
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Yellow-headed Blackbird Distribution Map
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Asynchronous Hatching
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Intraclutch Variation
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Carotenoid Limitation
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Lab Methods
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ANOVA Results
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Differences in Absorption?
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Antioxidant Function
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Carotenoid Tradeoffs
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Objective & Predictions
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Results - Yolk Carotenoids
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Results - Feather Carotenoids
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Early and Late Breeders
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Early & Late Breeders
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Nestling Growth
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Field Methods - 2005
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Growth Rate
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Parameters Measured
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Results - Maternal Condition
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Results - Yolk Lutein
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Summary of Results • Female condition & allocation of resources to eggs can have
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What's up with Lutein?
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Red-winged Blackbird Distribution Map
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Red-winged Blackbird Yolk Carotenoids
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Laying-sequence Variation
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Bird Surveys, Aquatic Insects and Water Chemistry
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Acknowledgements
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Questions?
Description:
Explore a fascinating lecture on carotenoid pigments and their role in the reproduction of wetland-dependent birds. Delve into Dr. Jennifer Newbrey's research on Yellow-headed and Red-winged Blackbirds, examining topics such as sexual signals, asynchronous hatching, and intraclutch variation. Learn about carotenoid limitation, lab methods, and ANOVA results. Discover the antioxidant function of carotenoids and their potential tradeoffs in bird physiology. Investigate the differences in yolk and feather carotenoids between early and late breeders, as well as their effects on nestling growth. Gain insights into field methods, growth rate parameters, and the impact of maternal condition on resource allocation to eggs. Explore the relationship between bird populations, aquatic insects, and water chemistry in wetland ecosystems.

Pigments & Reproduction in Wetland-Dependent Birds

Royal Tyrrell Museum of Palaeontology
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