Seasonal variation in size estimates of Aedes albopictus population based on standard mark–release–recapture experiments in an urban area on Reunion Island

Gouagna, Louis C.; Dehecq, Jean-Sébastien; Fontenille, Didier; Dumont, Yves; Boyer, Sébastien

doi:10.1016/j.actatropica.2014.12.011

Cited by 33 publications

(35 citation statements)

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“…The feedback control approach requires to assess the size of mosquito population at every t ∈ τ N. Using Mark-Release-Recapture (MRR) technique [14], it is possible to estimate (roughly) the wild population, by completing sparse measurements with a period pτ for some p ∈ N * := N \ {0}, and computing the sizes of (p − 1) intermediate releases using the last sampled information between two measurements. However, the previous operation is long and costly, and reducing the frequency of realization of this protocol is legitimate.…”

Section: Sparse Measurementsmentioning

confidence: 99%

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Implementation of control strategies for sterile insect techniques

Bliman

Cardona-Salgado

Dumont

et al. 2019

Mathematical Biosciences

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In this paper, we propose a sex-structured entomological model that serves as a basis for design of control strategies relying on releases of sterile male mosquitoes (Aedes spp) and aiming at elimination of the wild vector population in some target locality. We consider different types of releases (constant and periodic impulsive), providing necessary conditions to reach elimination. However, the main part of the paper is focused on the study of the periodic impulsive control in different situations. When the size of wild mosquito population cannot be assessed in real time, we propose the so-called open-loop control strategy that relies on periodic impulsive releases of sterile males with constant release size. Under this control mode, global convergence towards the mosquito-free equilibrium is proved on the grounds of sufficient condition that relates the size and frequency of releases. If periodic assessments (either synchronized with releases or more sparse) of the wild population size are available in real time, we propose the so-called closed-loop control strategy, which is adjustable in accordance with reliable estimations of the wild population sizes. Under this control mode, global convergence to the mosquitofree equilibrium is proved on the grounds of another sufficient condition that relates not only the size and frequency of periodic releases but also the frequency of sparse measurements taken on wild populations. Finally, we propose a mixed control strategy that combines open-loop and closed-loop strategies. This control mode renders the best result, in terms of overall time needed to reach elimination and the number of releases to be effectively carried out during the whole release campaign, while requiring for a reasonable amount of released sterile insects.

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Section: Sparse Measurementsmentioning

confidence: 99%

“…First, it is easy to check that function f , defined in (14), page 8, is first decreasing and then increasing, and, thus, may solely have no root, one root or two zeros.…”

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confidence: 99%

Implementation of control strategies for sterile insect techniques

Bliman

Cardona-Salgado

Dumont

et al. 2019

Mathematical Biosciences

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“…In the search for Integrated Pest Management (IPM) tools, an efficient marking methodology can be an important instrument. MRR, MR, and MC studies can be used for assessing (seasonal) dispersal [31,70,73,[79][80][81][82] or estimating population sizes [83,84] and can assist in the development of preventative strategies, better targeted control measures or prediction models [85]. MR and MRR studies can also be useful for determining trapping parameters in the development of monitoring [30,[86][87][88] and mass trapping strategies [89].…”

Section: Discussionmentioning

confidence: 99%

Marking Drosophila suzukii (Diptera: Drosophilidae) with Fluorescent Dusts

Clymans

Kerckvoorde²,

Beliën³

et al. 2020

Insects

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The marking of Drosophila suzukii can be an important instrument for studying the ecology and behaviour of this economically important fruit pest, aiding the development of new Integrated Pest Management (IPM) tools or strategies. There is, however, a need for a cost-effective methodology that provides an easily detectable and stable mark. Whereas fluorescent pigment powders are often used in entomological research, the pigments (series, dyes), application techniques, or doses need to be evaluated for each studied species in terms of their efficacy and possible adverse effects on the performance of the insect. The effectiveness of different application techniques and dyes (RadGlo ® TP-series) and their effect on the survival of adult D. suzukii were investigated in the laboratory. Furthermore, the influence of the marking on the behaviour of the flies was examined in laboratory trap assays (olfaction) and a field recapture study (general orientation). The persistence and detectability of the marks was evaluated both on living flies (for different application techniques) and dead flies under trapping/storage conditions. The use of fluorescent powders to mark D. suzukii flies yielded a clearly detectable and highly persistent mark, without any adverse effects on the survival and behaviour of the flies. Insects 2020, 11, 152 2 of 20The spotted wing Drosophila, Drosophila suzukii Matsumura (Diptera: Drosophilidae), native to Asia [5][6][7], has become a worldwide invasive pest of soft-skinned fruit crops over the last decade [8][9][10][11][12][13][14]. Studies on the ecology and behaviour of the species can yield new insights allowing the improvement or development of management strategies. Various methods for marking D. suzukii flies have been proposed and further optimised. An immunomarking technique (i.e., the use of proteins as markers and detection by enzyme-linked immuno-sorbent assays (ELISA) [15]) for both topical application and acquisition of residues on leaves was tested and optimised by Klick et al. in a series of laboratory and semi-field experiments [16]. What makes this technique unique is that vast areas can be sprayed with inexpensive proteins and that detection by ELISA is fairly sensitive to the acquisition of leaf residues. The disadvantages of immunomarking are the possibility of both false positives and false negatives [17], the need for individual analyses of specimens, and the costs and labour required for detection. Trace elements and stable isotopes can be administered to plants to act as systemic markers for herbivorous insects, an approach that was evaluated for D. suzukii with Rb and 15 N. [18]. The added value of these systemic markers lies in the fact that larvae are self-marked while developing inside the host fruits, enabling the linkage of captured adults to their source of larval development [18]. Methods of self-marking are particularly interesting for MC studies in which whole areas or plants are marked, instead of marking the (captured/reared) insects before release. For MR and M...

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“…It should be noted that choice of priors does have an impact on the final estimates and should be informed by evidence. In particular, the intercept of the detection/capture process may be We are aware that the N-mixture model is available in a frequentist framework through software packages like unmarked (Fiske & Chandler, 2011). However, this specification may lead to unrealistic (large) estimate of detection probability as the model tends to miss estimates of detection rate near the boundaries (0 or 1), which results in biases when it is known that the detection rate is very low.…”

Section: Discussionmentioning

confidence: 99%

“…However, Mark-Release-Recapture experiments -which are considered the gold standard to estimate size of animal populations -are not only very laborious and challenging to implement in the field, but also raise ethical concerns due to the need to release large number of potential vectors, which may contribute to disease transmission. For this reason, only few studies have been carried out so far (Cianci et al, 2013;Gouagna, Dehecq, Fontenille, Dumont, & Boyer, 2015;Villela et al, 2017Villela et al, , 2015 to estimate the absolute abundance of mosquito vectors which cause millions of infections and thousands of deaths every year (WHO, 2016).…”

Section: Introductionmentioning

confidence: 99%

Applying the N‐mixture model approach to estimate mosquito population absolute abundance from monitoring data

Manica

Caputo

Screti

et al. 2019

Journal of Applied Ecology

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Estimating population abundance is a key objective of surveillance programmes, particularly for vector species of public health interest. For mosquitos, which are vectors of human pathogens, established methods to measure absolute population abundance such as mark‐release‐recapture are difficult to implement and usually spatially limited. Typically, regional monitoring schemes assess species relative abundance (counting captured individuals) to prioritize control efforts and study species distribution. However, assessing absolute abundance is crucial when the focus is on pathogen transmission by contacts between vectors and hosts. Here, we applied the N‐mixture model approach to estimate mosquito abundance from standard monitoring data. We extended the N‐mixture model approach in a Bayesian framework by considering a beta‐binomial distribution for the detection process. We ran a simulation study to explore model performance under a low detection probability, a time‐varying population and different sets of independent variables. When informative priors were used and the model was well specified, estimates by N‐mixture model well correlated (>0.9) with synthetic data and had a mean absolute deviation of about 20%. Correlation decreased and biased increased with uninformative priors or model misspecification. When fed with field monitoring data to estimate the absolute abundance of the mosquito arbovirus vector Aedes albopictus within the metropolitan city of Rome (Italy), the N‐mixture model showed higher population size in residential neighbourhoods than in large green areas and revealed that traps located adjacent to vegetated sites have a higher probability of capturing mosquitoes. Synthesis and applications. Our results show that, if supported by a good knowledge of the target species biology and by informative priors (e.g. from previous studies of capture rates), the N‐mixture model represents a valuable tool to exploit field monitoring data to estimate absolute abundance of disease vectors and to assess vector‐related health risk on a wide spatial and temporal scale. For mosquitoes specifically, it is also valuable to invest in increased efficiency of trapping devices to improve estimates of absolute abundance from the models.

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Seasonal variation in size estimates of Aedes albopictus population based on standard mark–release–recapture experiments in an urban area on Reunion Island

Cited by 33 publications

References 50 publications

Implementation of control strategies for sterile insect techniques

Implementation of control strategies for sterile insect techniques

Marking Drosophila suzukii (Diptera: Drosophilidae) with Fluorescent Dusts

Applying the N‐mixture model approach to estimate mosquito population absolute abundance from monitoring data

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