Influence of host migration between woodland and pasture on the population dynamics of the tick Ixodes ricinus: A modelling approach

Hoch, Thierry; Monnet, Y.; Agoulon, Albert

doi:10.1016/j.ecolmodel.2010.04.008

Cited by 45 publications

(34 citation statements)

References 27 publications

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“…infected [16][17][18][19][20] and spatial [21,22] dynamics of disease risk, with multi-disciplinary data based on the literature, empirical evidence, earth observation and model predictions. It was developed using an agent-based approach that consisted of three generalized grid layers (tick population, host population and landscape) and a range of transition rules describing their interactions under the influence of temperature.…”

Section: Discussionmentioning

confidence: 99%

“…Durations of feeding are assumed to be less than one week for larvae, and one week for nymphs and adults. We also assume that questing activity and interstadial development are sensitive to temperature, while feeding success is assumed to be dependent on the density of hosts [16][17][18][19][20].…”

Section: Tick Population Layermentioning

confidence: 99%

“…Existing mechanistic models for studying the effects of temperature on Lyme disease risk are increasing in number (e.g. [16][17][18][19][20]). However, existing models do not incorporate spatial heterogeneity or focus on issues related only to the dynamics of vector populations, ignoring key components, such as host/pathogen distribution and habitat suitability, which in reality are distributed unevenly and can change rapidly over time.…”

Section: Introductionmentioning

confidence: 99%

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Modelling the seasonality of Lyme disease risk and the potential impacts of a warming climate within the heterogeneous landscapes of Scotland

Gilbert

Harrison

et al. 2016

J. R. Soc. Interface.

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Lyme disease is the most prevalent vector-borne disease in the temperate Northern Hemisphere. The abundance of infected nymphal ticks is commonly used as a Lyme disease risk indicator. Temperature can influence the dynamics of disease by shaping the activity and development of ticks and, hence, altering the contact pattern and pathogen transmission between ticks and their host animals. A mechanistic, agent-based model was developed to study the temperature-driven seasonality of Ixodes ricinus ticks and transmission of Borrelia burgdorferi sensu lato across mainland Scotland. Based on 12-year averaged temperature surfaces, our model predicted that Lyme disease risk currently peaks in autumn, approximately six weeks after the temperature peak. The risk was predicted to decrease with increasing altitude. Increases in temperature were predicted to prolong the duration of the tick questing season and expand the risk area to higher altitudinal and latitudinal regions. These predicted impacts on tick population ecology may be expected to lead to greater tick-host contacts under climate warming and, hence, greater risks of pathogen transmission. The model is useful in improving understanding of the spatial determinants and system mechanisms of Lyme disease pathogen transmission and its sensitivity to temperature changes.

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Section: Discussionmentioning

confidence: 99%

Section: Tick Population Layermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Modelling the seasonality of Lyme disease risk and the potential impacts of a warming climate within the heterogeneous landscapes of Scotland

Gilbert

Harrison

et al. 2016

J. R. Soc. Interface.

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“…El déficit de saturación, es un valor frecuentemente usado en modelación de la dinámica poblacional de garrapatas, tanto para evaluar poblaciones durante cambios climáticos, como para simular el efecto de la rotación de potreros (24,25). De estas modelaciones se concluye que existe una gran relación entre la mortalidad de larvas y huevos con el déficit de saturación (25).…”

Section: (B) Microplusunclassified

“…The saturation deficit is a value frequently used in modeling the population dynamics of tick populations both to assess climate change, and to simulate the effect of rotational grazing (24,25). From these exercises it is concluded that there is a strong relationship between mortality of larvae and eggs and saturation deficit (25).…”

Section: (B) Microplusmentioning

confidence: 99%

Tick loads in Bos taurus cattle grazing in two contrasting production systems

Rosales

P³

2016

Rev MVZ Córdoba

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Objectives. To relate the effect of biotic and abiotic factors on Rhipicephalus (Boophilus) microplus tick loads on cows grazing either in intensive silvopastoral systems (ISS) (Lucerna) or in grass pastures associated with sugarcane plantations (La Isabela). Materials and methods. Tick counts were performed on 27 Lucerne breed animals that were in different physiological states, six of which were grazing on forage grass paddocks associated with commercial sugarcane plantations and the remaining animals grazed in an ISS based on Leucaena leucocephala and Cynodon plectostachyus. The tick counts were made every 15 days. The data of temperature, humidity, and radiation were taken from a weather station that was inside the ISS. Results. There was a weak relationship between saturation deficit and tick load (R 2 =0.34) and another between UV radiation and tick load (R 2 =0.205) for animals grazing in ISS. There were differences in tick counts when comparing animals of similar productivity from both systems evaluated: in La Isabela (sugarcane grass paddocks) average counts were 311 ticks perceptible to the touch (TPT) and in Lucerna (ISS farm) average counts were 206 TPT (p= 0.02). Additionally, there were greater tick counts in high productivity cows compared to low productivity cows. Conclusions. The abiotic and biotic factors of the ecosystem and animal productivity can affect the TPT counts. In ISS systems, tick counts can be lower than those observed in monoculture grazing systems.Key words: Ectoparasites, microclimate, radiation, saturation deficit (Source: CAB). RESUMENObjetivos. Relacionar el efecto de algunos factores bioticos y abioticos sobre las cargas de la garrapata Rhipicephalus (Boophilus) microplus en hembras bovinas que pastorean en sistemas silvopastoriles intensivos (SSPi)(Lucerna) y en monocultivos asociados a cañaduzales (La Isabela). Materiales y métodos. Se realizaron conteos en 27 animales de raza Lucerna en diferentes estados fisiológicos, seis de los cuales se encontraban pastoreando en lotes de gramíneas forrajeras asociados con plantaciones de caña comerciales y los animales restantes pastoreaban en SSPi basados en Leucaena leucocephala y Cynodon plectostachyus. El conteo de garrapatas se efectuó cada 15 días. Los datos de temperatura, humedad y radiación se tomaron de una estación meteorológica que se encontraba en el interior del SSPi. Resultados. Se encontró una relación débil entre el déficit de saturación y los conteos de garrapatas (R 2 =0.34) y entre la radiación UV y los conteos de garrapatas (R 2 =0.205) Rev.MVZ Córdoba 21(2):5404-5415, 2016. ISSN: 0122-0268 ORIGINAL 5405 para los bovinos pastoreando en SSPi. Hubo diferencia entre los conteos en animales con similar productividad en ambos sistemas evaluados; siendo el promedio total de garrapatas perceptibles al tacto (GPT) de 311 para La Isabela y de 206 GPT para Lucerna (p=0.02). Hubo mayor número de GPT en hembras con mayor productividad en comparación con las de baja productividad (p<0.05). Conclusiones. Los factores b...

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A Nonlocal Spatial Model for Lyme Disease

Zhao¹

2017

CMS Books in Mathematics

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Influence of host migration between woodland and pasture on the population dynamics of the tick Ixodes ricinus: A modelling approach

Cited by 45 publications

References 27 publications

Modelling the seasonality of Lyme disease risk and the potential impacts of a warming climate within the heterogeneous landscapes of Scotland

Modelling the seasonality of Lyme disease risk and the potential impacts of a warming climate within the heterogeneous landscapes of Scotland

Tick loads in Bos taurus cattle grazing in two contrasting production systems

A Nonlocal Spatial Model for Lyme Disease

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