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Dissertation Research: Role of Predation by Jacamars (Aves: Galbulidae) in Maintaining Hybrid Zones of Heliconius Butterflies

Dissertation Research: Role of Predation by Jacamars (Aves: Galbulidae) in Maintaining Hybrid Zones of Heliconius Butterflies
论文研究: Jacamars(鸟纲:Galbulidae)的捕食在维持 Heliconius 蝴蝶杂交区中的作用
批准号:
9903715
负责人:
David Winkler
金额:
$0.0万
依托单位国家:
美国
项目类别:
Standard Grant
财政年份:
1999
资助国家:
美国
项目状态:
已结题
起止时间:
1999-06-01 至 2001-05-31

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9903715WinklerAvian predators are thought to constrain dispersal across Heliconius hybrid zones by killing rare morphs at disproportionately high rates, yet the mechanisms of predatory behavior leading to this frequency-dependent selection are unknown. In particular, experimental investigations of specialized predators like jacamars are needed. This dissertation research will address three related objectives: (1) to quantify learning and forgetting rates in jacamars, (2) to design and test rapid assessment surveys measuring the density of jacamars and Heliconius, and (3) to compare attach rates and predator-prey densities in a narrow and wide region of a Heliconius hybrid zone. For objectives 1 and 2, a combination of cage and field experiments will be employed in Venezuela. For objective 3, two transects, one wide and one narrow, will be studies in a variable hybrid zone in Bolivia by setting up seven experimental plots along each transect and comparing attack rates and densities of jacamars and Heliconius. An investigation of jacamar predation in Heliconius hybrid zones will enrich all mimicry studies by testing a crucial component of mimicry models, by expanding our knowledge of how specialized predators learn and forget mimetic prey, and by exploring the foraging behavior of a distinct family of neotropical birds.
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COLLABORATIVE RESEARCH: IDBR: Enhancing and Disseminating Miniaturized Tracking Technology for Widespread Use on Small Migratory Songbirds
  • 批准号:
    1152131
  • 项目类别:
    Standard Grant
  • 资助金额:
    $9.02万
  • 财政年份:
    2012
  • 负责人:
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    $44.88万
  • 财政年份:
    2012
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DISSERTATION RESEARCH: Immune-based Maternal Effects: Investigating Variation and Plasticity in Female Deposition of Protective Immune Compounds into Eggs
  • 批准号:
    1110563
  • 项目类别:
    Standard Grant
  • 资助金额:
    $1.5万
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    2011
  • 负责人:
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Collaborative Research: Oxidative Stress, Telomere Dynamics and Aging in a Free-living Organism
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    0744753
  • 项目类别:
    Continuing Grant
  • 资助金额:
    $14.73万
  • 财政年份:
    2008
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Research on Quantum Field Theory without a Lagrangian Description
  • 批准号:
    24ZR1403900
  • 项目类别:
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  • 资助金额:
    --
  • 批准年份:
    2024
  • 负责人:
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  • 依托单位:
Cell Research
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