Pathogens manipulate the preference of vectors, slowing disease spread in a multi-host system.
Ecol Lett
; 22(7): 1115-1125, 2019 Jul.
Article
em En
| MEDLINE
| ID: mdl-31090159
ABSTRACT
The spread of vector-borne pathogens depends on a complex set of interactions among pathogen, vector, and host. In single-host systems, pathogens can induce changes in vector preferences for infected vs. healthy hosts. Yet it is unclear if pathogens also induce changes in vector preference among host species, and how changes in vector behaviour alter the ecological dynamics of disease spread. Here, we couple multi-host preference experiments with a novel model of vector preference general to both single and multi-host communities. We show that viruliferous aphids exhibit strong preferences for healthy and long-lived hosts. Coupling experimental results with modelling to account for preference leads to a strong decrease in overall pathogen spread through multi-host communities due to non-random sorting of viruliferous vectors between preferred and non-preferred host species. Our results demonstrate the importance of the interplay between vector behaviour and host diversity as a key mechanism in the spread of vectored-diseases.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Afídeos
/
Insetos Vetores
Limite:
Animals
Idioma:
En
Revista:
Ecol Lett
Ano de publicação:
2019
Tipo de documento:
Article
País de afiliação:
Estados Unidos