Pathology associated with west nile virus infections in the yellow-billed magpie (PICA nuttalli)

A california endemic bird

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Yellow-billed Magpies (Pica nuttalli, Corvidae) are found exclusively in central California and have experienced alarming West Nile virus (WNV)-associated mortality since 2004. The first reported case of WNV in the species was reported in July 2004. Subsequently, 81% (304/ 374) of dead magpies submitted that year to the California Department of Health Services Dead Bird Surveillance Program were WNV positive by polymerase chain reaction (PCR) test. We studied 43 magpie carcasses collected in 2004 and observed distinctive lesions in 24 birds that tested positive for WNV. Lesions included vasculitis and necrosis, and organs affected included brain, heart, liver, and gastrointestinal tract. From the severity of lesions observed, we suspect that a rapid onset of morbidity and mortality occurs with the Yellow-billed Magpie. Examination of bird survey data indicates that Yellow-billed Magpie abundance declined coincidentally with the onset of WNV in California. The home range and habitat of the species are nested within known areas of WNV transmission. Yellow-billed Magpies may be at risk of a decline and population bottleneck. Observations and experience with the Yellow-billed Magpie and WNV may provide insights for other endangered corvids that have not yet been exposed to WNV, including the Hawaiian Crow (Corvus hawaiiensis) and Island Scrub Jay (Aphelocoma insularis).

Original languageEnglish (US)
Pages (from-to)401-408
Number of pages8
JournalJournal of Wildlife Diseases
Volume46
Issue number2
StatePublished - Apr 2010

Fingerprint

West Nile virus
Virus Diseases
pathology
Birds
Pathology
bird
birds
infection
lesion
lesions (animal)
Crows
Corvidae
Pica
Homing Behavior
mortality
vasculitis
population bottleneck
Corvus
crows
Mortality

Keywords

  • Arbovirus
  • Corvid
  • Necrosis
  • Pathology
  • Pica nuttalli
  • Species of concern
  • West nile virus
  • Yellow-billed magpie

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Ecology
  • Medicine(all)

Cite this

@article{6f0f950cf1f64f6d9479356d35c04420,
title = "Pathology associated with west nile virus infections in the yellow-billed magpie (PICA nuttalli): A california endemic bird",
abstract = "Yellow-billed Magpies (Pica nuttalli, Corvidae) are found exclusively in central California and have experienced alarming West Nile virus (WNV)-associated mortality since 2004. The first reported case of WNV in the species was reported in July 2004. Subsequently, 81{\%} (304/ 374) of dead magpies submitted that year to the California Department of Health Services Dead Bird Surveillance Program were WNV positive by polymerase chain reaction (PCR) test. We studied 43 magpie carcasses collected in 2004 and observed distinctive lesions in 24 birds that tested positive for WNV. Lesions included vasculitis and necrosis, and organs affected included brain, heart, liver, and gastrointestinal tract. From the severity of lesions observed, we suspect that a rapid onset of morbidity and mortality occurs with the Yellow-billed Magpie. Examination of bird survey data indicates that Yellow-billed Magpie abundance declined coincidentally with the onset of WNV in California. The home range and habitat of the species are nested within known areas of WNV transmission. Yellow-billed Magpies may be at risk of a decline and population bottleneck. Observations and experience with the Yellow-billed Magpie and WNV may provide insights for other endangered corvids that have not yet been exposed to WNV, including the Hawaiian Crow (Corvus hawaiiensis) and Island Scrub Jay (Aphelocoma insularis).",
keywords = "Arbovirus, Corvid, Necrosis, Pathology, Pica nuttalli, Species of concern, West nile virus, Yellow-billed magpie",
author = "Ernest, {Holly B} and Leslie Woods and Hoar, {Bruce R.}",
year = "2010",
month = "4",
language = "English (US)",
volume = "46",
pages = "401--408",
journal = "Journal of Wildlife Diseases",
issn = "0090-3558",
publisher = "Wildlife Disease Association, Inc.",
number = "2",

}

TY - JOUR

T1 - Pathology associated with west nile virus infections in the yellow-billed magpie (PICA nuttalli)

T2 - A california endemic bird

AU - Ernest, Holly B

AU - Woods, Leslie

AU - Hoar, Bruce R.

PY - 2010/4

Y1 - 2010/4

N2 - Yellow-billed Magpies (Pica nuttalli, Corvidae) are found exclusively in central California and have experienced alarming West Nile virus (WNV)-associated mortality since 2004. The first reported case of WNV in the species was reported in July 2004. Subsequently, 81% (304/ 374) of dead magpies submitted that year to the California Department of Health Services Dead Bird Surveillance Program were WNV positive by polymerase chain reaction (PCR) test. We studied 43 magpie carcasses collected in 2004 and observed distinctive lesions in 24 birds that tested positive for WNV. Lesions included vasculitis and necrosis, and organs affected included brain, heart, liver, and gastrointestinal tract. From the severity of lesions observed, we suspect that a rapid onset of morbidity and mortality occurs with the Yellow-billed Magpie. Examination of bird survey data indicates that Yellow-billed Magpie abundance declined coincidentally with the onset of WNV in California. The home range and habitat of the species are nested within known areas of WNV transmission. Yellow-billed Magpies may be at risk of a decline and population bottleneck. Observations and experience with the Yellow-billed Magpie and WNV may provide insights for other endangered corvids that have not yet been exposed to WNV, including the Hawaiian Crow (Corvus hawaiiensis) and Island Scrub Jay (Aphelocoma insularis).

AB - Yellow-billed Magpies (Pica nuttalli, Corvidae) are found exclusively in central California and have experienced alarming West Nile virus (WNV)-associated mortality since 2004. The first reported case of WNV in the species was reported in July 2004. Subsequently, 81% (304/ 374) of dead magpies submitted that year to the California Department of Health Services Dead Bird Surveillance Program were WNV positive by polymerase chain reaction (PCR) test. We studied 43 magpie carcasses collected in 2004 and observed distinctive lesions in 24 birds that tested positive for WNV. Lesions included vasculitis and necrosis, and organs affected included brain, heart, liver, and gastrointestinal tract. From the severity of lesions observed, we suspect that a rapid onset of morbidity and mortality occurs with the Yellow-billed Magpie. Examination of bird survey data indicates that Yellow-billed Magpie abundance declined coincidentally with the onset of WNV in California. The home range and habitat of the species are nested within known areas of WNV transmission. Yellow-billed Magpies may be at risk of a decline and population bottleneck. Observations and experience with the Yellow-billed Magpie and WNV may provide insights for other endangered corvids that have not yet been exposed to WNV, including the Hawaiian Crow (Corvus hawaiiensis) and Island Scrub Jay (Aphelocoma insularis).

KW - Arbovirus

KW - Corvid

KW - Necrosis

KW - Pathology

KW - Pica nuttalli

KW - Species of concern

KW - West nile virus

KW - Yellow-billed magpie

UR - http://www.scopus.com/inward/record.url?scp=77952391422&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77952391422&partnerID=8YFLogxK

M3 - Article

VL - 46

SP - 401

EP - 408

JO - Journal of Wildlife Diseases

JF - Journal of Wildlife Diseases

SN - 0090-3558

IS - 2

ER -