Increasing avian pox prevalence varies by species, and with immune function, in Galápagos finches

Zylberberg, Maxine; Lee, Kelly A.; Klasing, Kirk C.; Wikelski, Martin

Increasing avian pox prevalence varies by species, and with immune function, in Galápagos finches

Dateien

Zylberberg_2-10cl6pqxskmi27.pdf(889.99 KB)

Datum

2012

Autor:innen

Zylberberg, Maxine

Lee, Kelly A.

Klasing, Kirk C.

Wikelski, Martin

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Biological Conservation ; 153 (2012). - S. 72-79. - ISSN 0006-3207. - eISSN 1873-2917

Zusammenfassung

Avian pox virus (APV), a pathogen implicated as a major factor in avian declines and extinctions in Hawaii, was introduced to the Galápagos in the late 1890s. While APV is thought to have increased in prevalence in recent years, no study has carefully evaluated the threat this pathogen poses to the Galápagos avifauna. In this paper, we examine the course of the APV epidemic in seven species of Galápagos finch on Santa Cruz Island (Geospiza fuliginosa, G. fortis, G. magnirostris, G. scandens, Camarhynchus parvulus, Cactospiza pallida, and Certhidea olivacea). We describe temporal changes in the prevalence of the avian pox disease (AP) caused by APV and the proportion of individuals that have recovered from AP from 2000 to 2009. Then we examine species differences in susceptibility to AP and how this variation correlates with differences in innate immune function. We show that AP prevalence has increased dramatically from 2000 to 2009. However, this increase in prevalence varied by species; specifically, we found that prevalence increased rapidly in G. fuliginosa, C. parvulus, G. scandens, and C. olivacea, but not at all in G. fortis. Furthermore, innate immune function varies between years and species, and this variation correlates with increased prevalence and species variation in susceptibility to APV. To our knowledge, this is the first study to demonstrate significant interannual variation in innate immune function in wild birds, and to show that this immune variation correlates with susceptibility to an introduced disease.

Fachgebiet (DDC)

570 Biowissenschaften, Biologie

Schlagwörter

Ecoimmunology, Disease ecology, Avian pox, Galápagos finch, Innate immune function

Zitieren

ISO 690

ZYLBERBERG, Maxine, Kelly A. LEE, Kirk C. KLASING, Martin WIKELSKI, 2012. Increasing avian pox prevalence varies by species, and with immune function, in Galápagos finches. In: Biological Conservation. 153, pp. 72-79. ISSN 0006-3207. eISSN 1873-2917. Available under: doi: 10.1016/j.biocon.2012.04.022

BibTex

@article{Zylberberg2012-09Incre-38295,
  year={2012},
  doi={10.1016/j.biocon.2012.04.022},
  title={Increasing avian pox prevalence varies by species, and with immune function, in Galápagos finches},
  volume={153},
  issn={0006-3207},
  journal={Biological Conservation},
  pages={72--79},
  author={Zylberberg, Maxine and Lee, Kelly A. and Klasing, Kirk C. and Wikelski, Martin}
}

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