Effects of West Nile Virus Infection and Immune Function on Female - - PowerPoint PPT Presentation

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Effects of West Nile Virus Infection and Immune Function on Female - - PowerPoint PPT Presentation

Effects of West Nile Virus Infection and Immune Function on Female Yellow-headed Blackbird Reproduction Jennifer Newbrey Department of Biological Sciences North Dakota State University West Nile Virus Introduced into eastern North


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Effects of West Nile Virus Infection and Immune Function on Female Yellow-headed Blackbird Reproduction

Jennifer Newbrey

Department of Biological Sciences North Dakota State University

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West Nile Virus

  • Introduced into eastern North

America in 1999

  • Reached North Dakota in 2002
  • Can cause fatal meningitis
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Outer Membrane Air Cell Inner Membrane Amnion Yolk Chorioallantois

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Objectives

1. Quantify prevalence of WNV in a population of yellow-headed blackbirds 2. Quantify variation in immune function

  • f female blackbirds

3. Measure relation between female immune function and carotenoid allocation to eggs

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= Study Area

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Methods: Objective 2

  • Cell-mediated (inflammation) & Humoral

immunity (antibodies) B- Cell T- Cell

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Cell-mediated Immunity

WBC

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Humoral Immunity

RBC

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Project Update

2003 Field Season Females Males Other Eggs 51

  • Feathers

20 9

  • Blood

20 9 22

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Acknowledgements

  • ND Water Resources

Research Institute

  • ND Department of

Health

  • ND EPSCoR
  • University of Colorado
  • Dr. Bradley Blitvich
  • Graduate Committee

Chair: Dr. Wendy Reed

  • Dr. Penelope Gibbs
  • Dr. James Grier
  • Dr. Gary Nuechterlein
  • Field Assistance
  • Becky Wentzel
  • Larry Newbrey
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