دورية أكاديمية
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Using Bayesian state-space models to understand the population dynamics of the dominant malaria vector, Anopheles funestus in rural Tanzania.

التفاصيل البيبلوغرافية
العنوان: Using Bayesian state-space models to understand the population dynamics of the dominant malaria vector, Anopheles funestus in rural Tanzania.
المؤلفون: Ngowo HS; Department of Environmental Health & Ecological Sciences, Ifakara Health Institute, Ifakara, Tanzania. hngowo@ihi.or.tz.; Institute of Biodiversity, Animal Health and Comparative Medicine, University of Glasgow, Glasgow, UK. hngowo@ihi.or.tz., Okumu FO; Department of Environmental Health & Ecological Sciences, Ifakara Health Institute, Ifakara, Tanzania.; Institute of Biodiversity, Animal Health and Comparative Medicine, University of Glasgow, Glasgow, UK.; School of Public Health, University of the Witwatersrand, Braamfontein, Republic of South Africa.; School of Life Science and Bioengineering, Nelson Mandela African Institution of Science & Technology, Arusha, Tanzania., Hape EE; Department of Environmental Health & Ecological Sciences, Ifakara Health Institute, Ifakara, Tanzania.; Institute of Biodiversity, Animal Health and Comparative Medicine, University of Glasgow, Glasgow, UK., Mshani IH; Department of Environmental Health & Ecological Sciences, Ifakara Health Institute, Ifakara, Tanzania.; Institute of Biodiversity, Animal Health and Comparative Medicine, University of Glasgow, Glasgow, UK., Ferguson HM; Department of Environmental Health & Ecological Sciences, Ifakara Health Institute, Ifakara, Tanzania.; Institute of Biodiversity, Animal Health and Comparative Medicine, University of Glasgow, Glasgow, UK., Matthiopoulos J; Institute of Biodiversity, Animal Health and Comparative Medicine, University of Glasgow, Glasgow, UK.
المصدر: Malaria journal [Malar J] 2022 Jun 03; Vol. 21 (1), pp. 161. Date of Electronic Publication: 2022 Jun 03.
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: BioMed Central Country of Publication: England NLM ID: 101139802 Publication Model: Electronic Cited Medium: Internet ISSN: 1475-2875 (Electronic) Linking ISSN: 14752875 NLM ISO Abbreviation: Malar J Subsets: MEDLINE
أسماء مطبوعة: Original Publication: London : BioMed Central, [2002-
مواضيع طبية MeSH: Anopheles*/physiology , Malaria*/prevention & control, Animals ; Bayes Theorem ; Female ; Mosquito Vectors/physiology ; Population Dynamics ; Tanzania
مستخلص: Background: It is often assumed that the population dynamics of the malaria vector Anopheles funestus, its role in malaria transmission and the way it responds to interventions are similar to the more elaborately characterized Anopheles gambiae. However, An. funestus has several unique ecological features that could generate distinct transmission dynamics and responsiveness to interventions. The objectives of this work were to develop a model which will: (1) reconstruct the population dynamics, survival, and fecundity of wild An. funestus populations in southern Tanzania, (2) quantify impacts of density dependence on the dynamics, and (3) assess seasonal fluctuations in An. funestus demography. Through quantifying the population dynamics of An. funestus, this model will enable analysis of how their stability and response to interventions may differ from that of An. gambiae sensu lato.
Methods: A Bayesian State Space Model (SSM) based on mosquito life history was fit to time series data on the abundance of female An. funestus sensu stricto collected over 2 years in southern Tanzania. Prior values of fitness and demography were incorporated from empirical data on larval development, adult survival and fecundity from laboratory-reared first generation progeny of wild caught An. funestus. The model was structured to allow larval and adult fitness traits to vary seasonally in response to environmental covariates (i.e. temperature and rainfall), and for density dependency in larvae. The effects of density dependence and seasonality were measured through counterfactual examination of model fit with or without these covariates.
Results: The model accurately reconstructed the seasonal population dynamics of An. funestus and generated biologically-plausible values of their survival larval, development and fecundity in the wild. This model suggests that An. funestus survival and fecundity annual pattern was highly variable across the year, but did not show consistent seasonal trends either rainfall or temperature. While the model fit was somewhat improved by inclusion of density dependence, this was a relatively minor effect and suggests that this process is not as important for An. funestus as it is for An. gambiae populations.
Conclusion: The model's ability to accurately reconstruct the dynamics and demography of An. funestus could potentially be useful in simulating the response of these populations to vector control techniques deployed separately or in combination. The observed and simulated dynamics also suggests that An. funestus could be playing a role in year-round malaria transmission, with any apparent seasonality attributed to other vector species.
(© 2022. The Author(s).)
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معلومات مُعتمدة: OPP1099295 United States HHMI Howard Hughes Medical Institute; INV-002138 Bill and Melinda Gates Foundation
فهرسة مساهمة: Keywords: Abundance; Anopheles funestus; Density dependence; Population dynamic; Seasonality; State space model
تواريخ الأحداث: Date Created: 20220606 Date Completed: 20220608 Latest Revision: 20220716
رمز التحديث: 20231215
مُعرف محوري في PubMed: PMC9166306
DOI: 10.1186/s12936-022-04189-4
PMID: 35658961
قاعدة البيانات: MEDLINE
الوصف
تدمد:1475-2875
DOI:10.1186/s12936-022-04189-4