Landscape variation influences trophic cascades in dengue vector food webs

Weterings, Robbie; Umponstira, Chanin; Buckley, Hannah L.

doi:10.1126/sciadv.aap9534

Cited by 28 publications

(14 citation statements)

References 60 publications

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“…Our sampling did not include movable artificial habitats, such as small plastic containers, flower pots, or abandoned tires, which are the preferred larval sites of other urban species, such as Aedes spp. (Weterings et al ).…”

Section: Methodsmentioning

confidence: 99%

“…Even though previous studies of aquatic insects in tropical Southeast Asia, especially in paddy fields, have investigated mosquito species composition (Mogi and Miyagi , Ohba et al , Ohba et al ), few studies have focused on the relationships between predatory aquatic insects and mosquito density (Lundkvist et al , Mogi , Weterings et al ), especially with regard to the wetlands, pools, and artificial lentic habitats in urban and suburban areas. Accordingly, the purpose of the present study was to investigate the relationships between predatory aquatic insects (i.e., the OCH group) and mosquito larvae in mosquito‐rich habitats in the urban and suburban residential areas of Chiang Mai, northern Thailand.…”

Section: Introductionmentioning

confidence: 99%

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Relationships between predatory aquatic insects and mosquito larvae in residential areas in northern Thailand

Sareein

Phalaraksh

Rahong

et al. 2019

Journal of Vector Ecology

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In order to elucidate the poorly understood relationships between mosquito larvae and their predatory aquatic insects in urban and suburban areas of tropical Southeast Asia, where vector‐borne diseases are prevalent, aquatic insects were sampled from 14 aquatic habitats in residential areas of Chiang Mai, northern Thailand, during the rainy season (July to November) in 2016. Correlations among biological variables, densities of major predatory aquatic insect groups (i.e., Odonata, Coleoptera, and Hemiptera: OCH group) in wetlands and artificial lentic habitats, and the density of mosquito larvae were analyzed. Among the sampled mosquito larvae, Culex spp. were the most abundant, and both OCH density and water quality were major determinants of Culex spp. density (rs = −0.302 and −0.396, respectively). Logistic regression analyses indicated that the probability of Culex spp. occurrence was significantly and negatively correlated with OCH density. Furthermore, high macrophyte abundance was associated with higher predator density, potentially reducing mosquito density. Hemipteran predators were most negatively correlated with Culex spp. density, regardless of whether macrophyte abundance was high or low (rs = −0.547 and −0.533, respectively). Therefore, hemipteran predators were the most important aquatic insect predators in the urban and suburban residential areas of Chiang Mai, Thailand, and OCH species, such as the hemipteran Micronecta scutellaris, could be used as biological control agents against mosquitoes in the region.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Relationships between predatory aquatic insects and mosquito larvae in residential areas in northern Thailand

Sareein

Phalaraksh

Rahong

et al. 2019

Journal of Vector Ecology

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“…This is expected to disturb the currently settled network of ecological interactions, which are well-known to drive species abundance and geographical distribution [46][47][48][49]. Food-web dynamics will likely undergo shifts that may have complex consequences on the abundance of Aedes mosquitos [50]. Resource competition between mosquito species is also expected to have equally significant effects on abundance.…”

Section: Eco-evolutionary Effects Of Climate Change and Variability On Disease Transmissionmentioning

confidence: 99%

Transmission dynamics of dengue and chikungunya in a changing climate: do we understand the eco-evolutionary response?

Tozan

Sjödin

Muñoz³

et al. 2020

Expert Review of Anti-infective Therapy

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Introduction:We are witnessing an alarming increase in the burden and range of mosquito-borne arboviral diseases. The transmission dynamics of arboviral diseases is highly sensitive to climate and weather and is further affected by non-climatic factors such as human mobility, urbanization, and disease control. As evidence also suggests, climate-driven changes in species interactions may trigger evolutionary responses in both vectors and pathogens with important consequences for disease transmission patterns. Areas covered: Focusing on dengue and chikungunya, we review the current knowledge and challenges in our understanding of disease risk in a rapidly changing climate. We identify the most critical research gaps that limit the predictive skill of arbovirus risk models and the development of early warning systems, and conclude by highlighting the potentially important research directions to stimulate progress in this field. Expert opinion: Future studies that aim to predict the risk of arboviral diseases need to consider the interactions between climate modes at different timescales, the effects of the many non-climatic drivers, as well as the potential for climate-driven adaptation and evolution in vectors and pathogens. An important outcome of such studies would be an enhanced ability to promulgate early warning information, initiate adequate response, and enhance preparedness capacity.

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“…Whether or not those parameters are appropriate in a given control scenario will depend upon the specifics of the local ecology. We neglect several sources of complexity such as temperature effects 67,68 , variation in the availability of alternative hosts 69,70 , dispersion 34 and landscape effects 35 . We do this for simplicity and emphasise that care is required when extrapolating our results to real systems.…”

Section: Discussionmentioning

confidence: 99%

“…Parameterisation (Supplementary Table 1) reflects possible dynamics under fixed favourable climatic conditions across a 1 ha area with 200 larval sites, each of 250 mL and a carrying capacity of 25 larvae. We assume regular maintenance and constant efficacy of dissemination stations, and neglect dispersion 34 , landscape effects 35 , risk-mitigating oviposition site selection 36 , sterile male induced larval site contamination 37 , substrate effects on pyriproxifen efficacy 38 and reduced female survival due to sexual harassment 39 .…”

Section: Introductionmentioning

confidence: 99%

Biopesticides improve efficiency of the sterile insect technique for controlling mosquito-driven dengue epidemics

Pleydell

Bouyer

2019

Commun Biol

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Various mosquito control methods use factory raised males to suppress vector densities. But the efficiency of these methods is currently insufficient to prevent epidemics of arbovirus diseases such as dengue, chikungunya or Zika. Suggestions that the sterile insect technique (SIT) could be “boosted” by applying biopesticides to sterile males remain unquantified. Here, we assess mathematically the gains to SIT for Aedes control of either: boosting with the pupicide pyriproxifen (BSIT); or, contaminating mosquitoes at auto-dissemination stations. Thresholds in sterile male release rate and competitiveness are identified, above which mosquitoes are eliminated asymptotically. Boosting reduces these thresholds and aids population destabilisation, even at sub-threshold release rates. No equivalent bifurcation exists in the auto-dissemination sub-model. Analysis suggests that BSIT can reduce by over 95% the total release required to circumvent dengue epidemics compared to SIT. We conclude, BSIT provides a powerful new tool for the integrated management of mosquito borne diseases.

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Landscape variation influences trophic cascades in dengue vector food webs

Abstract: Landscapes affect natural dengue vector control through food webs in both terrestrial and aquatic environments.

Cited by 28 publications

References 60 publications

Relationships between predatory aquatic insects and mosquito larvae in residential areas in northern Thailand

Relationships between predatory aquatic insects and mosquito larvae in residential areas in northern Thailand

Transmission dynamics of dengue and chikungunya in a changing climate: do we understand the eco-evolutionary response?

Biopesticides improve efficiency of the sterile insect technique for controlling mosquito-driven dengue epidemics

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