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Quantifying the burden of managing wildlife diseases in multiple host species
Canessa, Stefano ; Bozzuto, Claudio ; Pasmans, Frank ; Martel, An
2019
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Título:
Quantifying the burden of managing wildlife diseases in multiple host species
Autor:
Canessa, Stefano
;
Bozzuto, Claudio
;
Pasmans, Frank
;
Martel, An
Assuntos:
analisis de sensibilidad
;
basic reproduction number
;
BATRACHOCHYTRIUM-SALAMANDRIVORANS
;
Biology and Life Sciences
;
chytrid
;
decision making
;
DYNAMICS
;
epidemiologia
;
epidemiology
;
epizootic
;
epizootico
;
EXTINCTION
;
INFECTIOUS-DISEASE
;
matriz de siguiente generacion
;
next-generation matrix
;
numero basico de reproduccion
;
PATHOGENS
;
quitridio
;
salamanders
;
salamandras
;
sensitivity analysis
;
toma de decisiones
;
transmission
;
Veterinary Sciences
Notas:
CONSERVATION BIOLOGY
ISSN: 1523-1739
ISSN: 0888-8892
Descrição:
Mitigation of infectious wildlife diseases is especially challenging where pathogens affect communities of multiple host species. Although most ecological studies recognize the challenge posed by multiple-species pathogens, the implications for management are typically assessed only qualitatively. Translating the intuitive understanding that multiple host species are important into practice requires a quantitative assessment of whether and how secondary host species should also be targeted by management and the effort this will require. Using a multiple-species compartmental model, we determined analytically whether and how intensively secondary host species should be managed to prevent outbreaks in focal hosts based on the reproduction number of individual host species and between-species transmission rates. We applied the model to the invasive pathogenic fungus Batrachochytrium salamandrivorans in a 2-host system in northern Europe. Avoiding a disease outbreak in the focal host (fire salamanders [Salamandra salamandra]) was impossible unless management also heavily targeted the secondary host (alpine newts [Ichthyosaura alpestris]). Preventing an outbreak in the community required targeted removal of at least 80% of each species. This proportion increased to 90% in the presence of an environmental reservoir of B. salamandrivorans and when the proportion of individuals removed could not be adjusted for different host species (e.g., when using traps that are not species specific). We recommend the focus of disease-mitigation plans should shift from focal species to the community level and calculate explicitly the management efforts required on secondary host species to move beyond the simple intuitive understanding that multiple host species may all influence the system. Failure to do so may lead to underestimating the magnitude of the effort required and ultimately to suboptimal or futile management attempts.
Data de criação/publicação:
2019
Idioma:
Inglês
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