Climate Change and Highland Malaria: Fresh Air for a Hot Debate

Chaves, Luis Fernando; Koenraadt, Constantianus J. M.

doi:10.1086/650284

Cited by 179 publications

(190 citation statements)

References 201 publications

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“…It should be noted that most research on the impact of climate change on mosquito biology and mosquitoborne disease focuses on the effects of temperature and fluctuations within temperature (105,106). It is clear that rainfall patterns may also drastically change in the next few decades, with an expected increase in the contrast between wet and dry regions and between wet and dry seasons (4).…”

Section: Modelling Vector Range and The Impact Of Climate Changementioning

confidence: 99%

Mosquitoes and Culicoides biting midges: vector range and the influence of climate change

Elbers¹,

Koenraadt²,

Meiswinkel³

2015

Rev. Sci. Tech. OIE

108

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SummaryVector-borne animal diseases pose a continuous and substantial threat to livestock economies around the globe. Increasing international travel, the globalisation of trade, and climate change are likely to play a progressively more important role in the introduction, establishment and spread of arthropod-borne pathogens worldwide. A review of the literature reveals that many climatic variables, functioning singly or in combination, exert varying effects on the distribution and range of Culicoides vector midges and mosquitoes. For example, higher temperatures may be associated with increased insect abundancethereby amplifying the risk of disease transmission -but there are no indications yet of dramatic shifts occurring in the geographic range of Culicoides midges. However, the same cannot be said for mosquitoes: over the last few decades, multiple Asian species have established themselves in Europe, spread and are unlikely to ever be eradicated. Research on how insects respond to changes in climate is still in its infancy. The authors argue that we need to grasp how other annectant changes, such as extremes in precipitation (drought and flooding), may affect the dispersal capability of mosquitoes. Models are useful for assessing the interplay between mosquito vectors expanding their range and the native flora and fauna; however, ecological studies employing classical mark-release-recapture techniques remain essential for addressing fundamental questions about the survival and dispersal of mosquito species, with the resulting parameters fed directly into new-generation disease transmission models. Studies on the eventual impact of mosquitoes on animal and human health should be tackled through large-scale integrated research programmes. Such an approach calls for more collaborative efforts, along the lines of the One Health Initiative.

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Section: Modelling Vector Range and The Impact Of Climate Changementioning

confidence: 99%

Mosquitoes and Culicoides biting midges: vector range and the influence of climate change

Elbers¹,

Koenraadt²,

Meiswinkel³

2015

Rev. Sci. Tech. OIE

108

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“…Health conditions and diseases are likely to be magnified under climate change because of the expansion of illness vectors (e.g. malaria and dengue [121,122]), and the reductions in the availability and reliability of freshwater supply. Both factors will increase the incidence of gastrointestinal diseases [123].…”

Section: Global Environmental Change Effects On Drylandsmentioning

confidence: 99%

It is getting hotter in here: determining and projecting the impacts of global environmental change on drylands

Maestre

Salguero‐Gómez

Quero

2012

Phil. Trans. R. Soc. B

262

209

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Drylands occupy large portions of the Earth, and are a key terrestrial biome from the socio-ecological point of view. In spite of their extent and importance, the impacts of global environmental change on them remain poorly understood. In this introduction, we review some of the main expected impacts of global change in drylands, quantify research efforts on the topic, and highlight how the articles included in this theme issue contribute to fill current gaps in our knowledge. Our literature analyses identify key under-studied areas that need more research (e.g. countries such as Mauritania, Mali, Burkina Faso, Chad and Somalia, and deserts such as the Thar, Kavir and Taklamakan), and indicate that most global change research carried out to date in drylands has been done on a unidisciplinary basis. The contributions included here use a wide array of organisms (from micro-organisms to humans), spatial scales (from local to global) and topics (from plant demography to poverty alleviation) to examine key issues to the socio-ecological impacts of global change in drylands. These papers highlight the complexities and difficulties associated with the prediction of such impacts. They also identify the increased use of long-term experiments and multidisciplinary approaches as priority areas for future dryland research. Major advances in our ability to predict and understand global change impacts on drylands can be achieved by explicitly considering how the responses of individuals, populations and communities will in turn affect ecosystem services. Future research should explore linkages between these responses and their effects on water and climate, as well as the provisioning of services for human development and well-being.

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“…In fact, it could be argued that insect outbreaks have underpinned the wider ecological discussion on whether populations undergo density dependent-regulation (Chaves & Koenraadt 2010;Nicholson 1958). In the applied context of disease control, vector outbreaks are of major importance given density-dependence implications for different control measures, such as larviciding (Agudelo-Silva & Spielman 1984;Wilson et al 1990), insecticide spraying (Newton & Reiter 1992;Oki et al 2011), and more recently, the field release of genetically modified mosquitoes (Legros et al 2009;Magori et al 2009).…”

Section: Hot Environments and Mosquito Outbreaksmentioning

confidence: 99%

Hot temperatures can force delayed mosquito outbreaks via sequential changes in Aedes aegypti demographic parameters in autocorrelated environments

et al. 2014

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Aedes aegypti L. (Diptera: Culicidae) is a common pantropical urban mosquito, vector of dengue, Yellow Fever and chikungunya viruses. Studies have shown Ae. aegypti abundance to be associated with environmental fluctuations, revealing patterns such as the occurrence of delayed mosquito outbreaks, i.e., sudden extraordinary increases in mosquito abundance, following transient extreme high temperatures. Here, we use a two-stage (larvae and adults) matrix model to propose a mechanism for environmental signal canalization into demographic parameters of Ae. aegypti that could explain delayed high temperature induced mosquito outbreaks. We performed model simulations using parameters estimated from a weekly time series from Thailand, assuming either independent or autocorrelated environments. For autocorrelated environments, we found that long delays in the association between the onset of "hot" environments and mosquito outbreaks (10 weeks, as observed in Thailand) can be generated when "hot" environments sequentially trigger a larval survival decrease and over-compensatory fecundity increase, which lasts for the whole "hot" period, in conjunction with a larval survival increase followed by a fecundity decrease when the environment returns to "normal". This result was not observed for independent environments. Finally, we discuss our results implications for prospective entomological research and vector management under changing environments.

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Climate Change and Highland Malaria: Fresh Air for a Hot Debate

Cited by 179 publications

References 201 publications

Mosquitoes and Culicoides biting midges: vector range and the influence of climate change

Mosquitoes and Culicoides biting midges: vector range and the influence of climate change

It is getting hotter in here: determining and projecting the impacts of global environmental change on drylands

Hot temperatures can force delayed mosquito outbreaks via sequential changes in Aedes aegypti demographic parameters in autocorrelated environments

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