Dilution effect and identity effect by wildlife in the persistence and recurrence of bovine tuberculosis

Current theories on disease-diversity relationships predict a strong influence of host richness on disease transmission. In addition, identity effect, caused by the occurrence of particular species, can also modify disease risk. We tested the richness effect and the identity effects of mammal specie...

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Vydané v:Parasitology Ročník 141; číslo 7; s. 981 - 987
Hlavní autori: HUANG, Z. Y. X., XU, C., VAN LANGEVELDE, F., PRINS, H. H. T., BEN JEBARA, K., DE BOER, W. F.
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: Cambridge, UK Cambridge University Press 01.06.2014
Predmet:
Africa
Africa - epidemiology
Animals
Animals, Wild
Antelopes
biodiversity
bovine tuberculosis
Buffaloes
Cattle
cattle herds
Climate change
climatic factors
disease risk
Disease transmission
diversity
epidemiology
farms
great-britain
Health risks
Mammals
monitoring
Mycobacterium
Mycobacterium bovis
Population Density
Risk Factors
species diversity
Species richness
Species Specificity
Syncerus caffer
system
Tragelaphus strepsiceros
Tuberculosis
Tuberculosis, Bovine - epidemiology
Tuberculosis, Bovine - microbiology
Wildlife
Africa
climate
Mycobacterium bovis
greater kudu
mammal species richness
African buffalo
cattle density
ISSN:0031-1820, 1469-8161, 1469-8161
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Shrnutí:Current theories on disease-diversity relationships predict a strong influence of host richness on disease transmission. In addition, identity effect, caused by the occurrence of particular species, can also modify disease risk. We tested the richness effect and the identity effects of mammal species on bovine tuberculosis (bTB), based on the regional bTB outbreak data in cattle from 2005–2010 in Africa. Besides, we also tested which other factors were associated with the regional bTB persistence and recurrence in cattle. Our results suggested a dilution effect, where higher mammal species richness (MSR) was associated with reduced probabilities of bTB persistence and recurrence in interaction with cattle density. African buffalo had a positive effect on bTB recurrence and a positive interaction effect with cattle density on bTB persistence, indicating an additive positive identity effect of buffalo. The presence of greater kudu had no effect on bTB recurrence or bTB persistence. Climatic variables only act as risk factors for bTB persistence. In summary, our study identified both a dilution effect and identity effect of wildlife and showed that bTB persistence and recurrence were correlated with different sets of risk factors. These results are relevant for more effective control strategies and better targeted surveillance measures in bTB.
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ISSN:0031-1820
1469-8161
1469-8161
DOI:10.1017/S0031182013002357