Influence of Climate Change on Mosquito Development and Blood‐feeding Patterns

Walton, William E.; Reisen, William K.

doi:10.1002/9781118297469.ch3

Cited by 7 publications

(10 citation statements)

References 72 publications

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“…Relationships between temperature and mosquito fitness have been established for a number of mosquito species [ 12 ], and thermal optima (ranges of temperatures at which fitness is maximized) have been established. In general, climate warming is expected to favour mosquitoes that have broad thermal optima and can adapt to higher temperatures [ 12 ]. Studies of reproduction of Ae.…”

Section: Introductionmentioning

confidence: 99%

“…The relationship between climate and DENV vector mosquito productivity and bionomics has not been investigated. There have been predictions that climate change will increase the abundance of disease vectors because mosquitoes will develop faster and complete more generations annually, and that warmer temperatures will decrease virus incubation time [ 12 ], with both phenomena contributing to increased dengue incidence. However, these predictions have not been supported by quantitative evidence from mosquito population dynamics models.…”

Section: Introductionmentioning

confidence: 99%

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Bionomic response of Aedes aegypti to two future climate change scenarios in far north Queensland, Australia: implications for dengue outbreaks

et al. 2014

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BackgroundDengue viruses are transmitted by anthropophilic mosquitoes and infect approximately 50 million humans annually. To investigate impacts of future climate change on dengue virus transmission, we investigated bionomics of the mosquito vector, Aedes aegypti.MethodsUsing a dynamic life table simulation model (the Container inhabiting mosquito simulation CIMSiM) and statistically downscaled daily values for future climate, we assessed climate change induced changes to mosquito bionomics. Simulations of Ae. aegypti populations for current (1991-2011) and future climate (2046-2065) were conducted for the city of Cairns, Queensland, the population centre with most dengue virus transmission in Australia. Female mosquito abundance, wet weight, and the extrinsic incubation period for dengue virus in these mosquitoes were estimated for current and future climate (MPI ECHAM 5 model, B1 and A2 emission scenarios).ResultsOverall mosquito abundance is predicted to change, but results were equivocal for different climate change scenarios. Aedes aegypti abundance is predicted to increase under the B1, but decrease under the A2 scenario. Mosquitoes are predicted to have a smaller body mass in a future climate. Shorter extrinsic incubation periods are projected.ConclusionsIt is therefore unclear whether dengue risk would increase or decrease in tropical Australia with climate change. Our findings challenge the prevailing view that a future, warmer climate will lead to larger mosquito populations and a definite increase in dengue transmission. Whilst general predictions can be made about future mosquito borne disease incidence, cautious interpretation is necessary due to interaction between local environment, human behaviour and built environment, dengue virus, and vectors.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Bionomic response of Aedes aegypti to two future climate change scenarios in far north Queensland, Australia: implications for dengue outbreaks

et al. 2014

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“…The importance of vapour pressure, as it measures atmospheric water content, is linked to humidity which greatly influences mosquito biology and behaviour [14,15]. Increased humidity leads to increased blood-feeding frequency and longevity, increasing the chance of RRV transmission between mosquitos, humans and reservoir hosts [3,12]. Despite the link between vapour pressure and humidity, both mean vapour pressure and mean relative humidity at maximum daily temperature were included in the final model because the collinearity was not sufficient to need to drop one of variables (ρs = 0.427, p-value < 0.001).…”

Section: Discussionmentioning

confidence: 99%

“…Vapour pressure is an absolute measure of atmospheric water content while relative humidity takes temperature into account due to its impact on the maximum atmospheric water vapour capacity [36]. Therefore, vapour pressure and relative humidity may have different interactions with RRV disease ecology [3,12]. The inclusion of https://doi.org/10.1017/S0950268823000365 Published online by Cambridge University Press both variables in the final model differs to previous RRV research which has considered both vapour pressure and relative humidity and included only one in the final model [14,15,35].…”

Section: Discussionmentioning

confidence: 99%

Predictive modelling of Ross River virus using climate data in the Darling Downs

Meadows

McMichael²,

Campbell³

2023

Epidemiol. Infect.

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Ross River virus (RRV) is the most common mosquito-borne infection in Australia. RRV disease is characterised by joint pain and lethargy placing a substantial burden on individual patients, the healthcare system and economy. This burden is compounded by a lack of effective treatment or vaccine for the disease. The complex RRV disease ecology cycle includes a number of reservoirs and vectors that inhabit a range of environments and climates across Australia. Climate is known to influence humans, animals and the environment and has previously been shown to be useful to RRV prediction models. We developed a negative binomial regression model to predict monthly RRV case numbers and outbreaks in the Darling Downs region of Queensland, Australia. Human RRV notifications and climate data for the period July 2001 -June 2014 were used for model training. Model predictions were tested using data for July 2014 -June 2019. The final model was moderately effective at predicting RRV case numbers (Pearson's r = 0.427) and RRV outbreaks (accuracy = 65%, sensitivity = 59%, specificity = 73%). Our findings show that readily available climate data can provide timely prediction of RRV outbreaks.

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“…VBDs and TBDs are highly climate-sensitive because the vectors are poikilotherms (body temperature fluctuates accordingly to environmental temperature), and the rate of most physiological activities such as digestion of blood meals, egg-laying, and refeeding is regulated by ambient temperature [ 92 ]. Additionally, vector ranges, distribution, and seasonality are already altered because of changes in weather conditions, particularly temperatures, precipitation, and humidity.…”

Section: Vectors and Climate Changes: The Italian Situationmentioning

confidence: 99%

Human Arboviral Infections in Italy: Past, Current, and Future Challenges

Rossi

Barreca

Benvenuto

et al. 2023

Viruses

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Arboviruses represent a public health concern in many European countries, including Italy, mostly because they can infect humans, causing potentially severe emergent or re-emergent diseases, with epidemic outbreaks and the introduction of endemic circulation of new species previously confined to tropical and sub-tropical regions. In this review, we summarize the Italian epidemiology of arboviral infection over the past 10 years, describing both endemic and imported arboviral infections, vector distribution, and the influence of climate change on vector ecology. Strengthening surveillance systems at a national and international level is highly recommended to be prepared to face potential threats due to arbovirus diffusion.

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Influence of Climate Change on Mosquito Development and Blood‐feeding Patterns

Cited by 7 publications

References 72 publications

Bionomic response of Aedes aegypti to two future climate change scenarios in far north Queensland, Australia: implications for dengue outbreaks

Bionomic response of Aedes aegypti to two future climate change scenarios in far north Queensland, Australia: implications for dengue outbreaks

Predictive modelling of Ross River virus using climate data in the Darling Downs

Human Arboviral Infections in Italy: Past, Current, and Future Challenges

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