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Loss of migratory behaviour increases infection risk for a butterfly host.
Satterfield, Dara A; Maerz, John C; Altizer, Sonia.
Afiliação
  • Satterfield DA; Odum School of Ecology, University of Georgia, Athens, GA 30602, USA dara7@uga.edu.
  • Maerz JC; Warnell School of Forestry and Natural Resources, University of Georgia, Athens, GA 30602, USA.
  • Altizer S; Odum School of Ecology, University of Georgia, Athens, GA 30602, USA.
Proc Biol Sci ; 282(1801): 20141734, 2015 Feb 22.
Article em En | MEDLINE | ID: mdl-25589600
Long-distance animal migrations have important consequences for infectious disease dynamics. In some cases, migration lowers pathogen transmission by removing infected individuals during strenuous journeys and allowing animals to periodically escape contaminated habitats. Human activities are now causing some migratory animals to travel shorter distances or form sedentary (non-migratory) populations. We focused on North American monarch butterflies and a specialist protozoan parasite to investigate how the loss of migratory behaviours affects pathogen spread and evolution. Each autumn, monarchs migrate from breeding grounds in the eastern US and Canada to wintering sites in central Mexico. However, some monarchs have become non-migratory and breed year-round on exotic milkweed in the southern US. We used field sampling, citizen science data and experimental inoculations to quantify infection prevalence and parasite virulence among migratory and sedentary populations. Infection prevalence was markedly higher among sedentary monarchs compared with migratory monarchs, indicating that diminished migration increases infection risk. Virulence differed among parasite strains but was similar between migratory and sedentary populations, potentially owing to high gene flow or insufficient time for evolutionary divergence. More broadly, our findings suggest that human activities that alter animal migrations can influence pathogen dynamics, with implications for wildlife conservation and future disease risks.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Comportamento Animal / Borboletas / Apicomplexa / Migração Animal Tipo de estudo: Etiology_studies / Risk_factors_studies Limite: Animals País/Região como assunto: Mexico Idioma: En Revista: Proc Biol Sci Assunto da revista: BIOLOGIA Ano de publicação: 2015 Tipo de documento: Article País de afiliação: Estados Unidos País de publicação: Reino Unido
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Comportamento Animal / Borboletas / Apicomplexa / Migração Animal Tipo de estudo: Etiology_studies / Risk_factors_studies Limite: Animals País/Região como assunto: Mexico Idioma: En Revista: Proc Biol Sci Assunto da revista: BIOLOGIA Ano de publicação: 2015 Tipo de documento: Article País de afiliação: Estados Unidos País de publicação: Reino Unido