Infections of Wolbachia may destabilize mosquito population dynamics
Autor: | Chih-hao Hsieh, Philip Crain, James W. Mains, Arndt Telschow, Florian Grziwotz, Takeshi Miki, George Sugihara, Stephen L. Dobson |
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Rok vydání: | 2017 |
Předmět: |
0301 basic medicine
Statistics and Probability Time Factors Aedes albopictus media_common.quotation_subject Population Dynamics 030231 tropical medicine Population Biological pest control Dengue virus medicine.disease_cause Models Biological General Biochemistry Genetics and Molecular Biology Competition (biology) 03 medical and health sciences 0302 clinical medicine Aedes parasitic diseases medicine Animals Microbiome education media_common education.field_of_study Larva General Immunology and Microbiology biology Ecology Applied Mathematics fungi General Medicine biology.organism_classification Culicidae 030104 developmental biology Nonlinear Dynamics Modeling and Simulation Wolbachia Gram-Negative Bacterial Infections General Agricultural and Biological Sciences |
Zdroj: | Journal of Theoretical Biology. 428:98-105 |
ISSN: | 0022-5193 |
Popis: | Recent efforts in controlling mosquito-borne diseases focus on biocontrol strategies that incapacitate pathogens inside mosquitoes by altering the mosquito's microbiome. A case in point is the introduction of Wolbachia into natural mosquito populations in order to eliminate Dengue virus. However, whether this strategy can successfully control vector-borne diseases is debated; particularly, how artificial infection affects population dynamics of hosts remains unclear. Here, we show that natural Wolbachia infections are associated with unstable mosquito population dynamics by contrasting Wolbachia-infected versus uninfected cage populations of the Asian tiger mosquito (Aedes albopictus). By analyzing weekly data of adult mosquito abundances, we found that the variability of the infected populations is significantly higher than that of the uninfected. The elevated population variability is explained by increased instability in dynamics, as quantified by system nonlinearity (i.e., state-dependence). In addition, predictability of infected populations is substantially lower. A mathematical model analysis suggests that Wolbachia may alter mosquito population dynamics by modifying larval competition of hosts. These results encourage examination for effects of artificial Wolbachia establishment on mosquito populations, because an enhancement of population variability with reduced predictability could pose challenges in management. Our findings have implications for application of microbiome alterations in biocontrol programs. |
Databáze: | OpenAIRE |
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