Tuning oral-bait delivery strategies for red deer in Mediterranean ecosystems

Martínez-Guijosa, Jordi; Casades‐Martí, Laia; González‐Barrio, David; Aranaz, Alicia; Fierro, Yolanda; Gortázar, Christian; Ruiz‐Fons, Francisco

doi:10.1007/s10344-020-01389-8

Cited by 7 publications

(6 citation statements)

References 39 publications

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“…Red deer (Cervus elaphus) and Eurasian wild boar (Sus scrofa) are the predominant ungulates in QM and both are present in high densities [29], determining high tick densities among which H. lusitanicum stands out as the most abundant tick species. Roe deer (Capreolus capreolus) are also present in QM at lower densities [30] and harbor adult H. lusitanicum ticks as well.…”

Section: Study Areamentioning

confidence: 99%

Testing the efficiency of capture methods for questing Hyalomma lusitanicum ticks (vector of Crimean-Congo hemorrhagic fever virus)

Cuadrado‐Matías

Casades‐Martí

Peralbo‐Moreno

et al. 2023

Preprint

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Background Available methods to census exophilic tick populations have limitations in estimating true population size due to their inability to capture a high proportion of the actual tick population. We currently ignore the efficacy of these methods to capture questing Hyalomma spp. ticks, vectors of the Crimean-Congo hemorrhagic fever virus. To address the need to accurately estimate questing densities of Hyalomma spp. we designed a field experiment to test the efficacy of blanket dragging, blanket flagging, CO2-baited traps, and and ad hoc designed method, absolute surface counts, in capturing adult Hyalomma lusitanicum ticks. Methods The experiment was designed in two stages to estimate the point (one-day sampling) and cumulative (three-day serial sampling) efficacy of the methods under varying sampling effort and habitat. Tick survival, host interference, and weather effects on efficacy were controlled for in multiple regression models. Results There was high variability in method efficacy for capturing ticks, which was also modulated by effort and habitat. The most effective method was absolute surface counts for both point estimates (39%) and cumulative efficacy (83%). CO2-baited traps reached a maximum efficacy of 37%, while blanket dragging and blanket flagging captured around 8% of the marked ticks. Conclusions Our results reveal the strengths and weaknesses of the different tick capture methods applied to study the demography of H. lusitanicum, and lay the groundwork for more accurate inferences about the true size of exophilic tick populations.

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Section: Study Areamentioning

confidence: 99%

Testing the efficiency of capture methods for questing Hyalomma lusitanicum ticks (vector of Crimean-Congo hemorrhagic fever virus)

Cuadrado‐Matías

Casades‐Martí

Peralbo‐Moreno

et al. 2023

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

“…Hyalomma lusitanicum stands out as the most abundant tick species in QM. Roe deer ( Capreolus capreolus ) are also present in QM at low densities (Martinez-Guijosa et al 2020) and harbor adult H. lusitanicum ticks as well.…”

Section: Methodsmentioning

confidence: 99%

Testing the efficiency of capture methods for questing Hyalomma lusitanicum (Acari: Ixodidae), a vector of Crimean-Congo hemorrhagic fever virus

Cuadrado-Matías,

Casades-Martí,

Peralbo-Moreno

et al. 2023

Journal of Medical Entomology

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Available methods to census exophilic tick populations have limitations in estimating true population size due to their inability to capture a high proportion of the actual tick population. We currently ignore the efficacy of these methods to capture questing Hyalomma spp. ticks, vectors of the Crimean-Congo hemorrhagic fever virus. To address the need of accurately estimating questing densities of Hyalomma spp., we designed a field experiment to test the efficacy of blanket dragging, blanket flagging, CO2-baited traps, and an ad hoc designed method, absolute surface counts, in capturing adult Hyalomma lusitanicum ticks from known numbers of preset fluorescent-marked ticks. The experiment was designed in 2 stages to estimate the point (1-day sampling) and cumulative (3-day serial sampling) efficacy of the methods under varying sampling effort and habitat. Tick survival, host interference, and weather effects on efficacy were controlled for in multiple regression models. There was high variability in method efficacy for capturing ticks, which was also modulated by effort, habitat, tick density, hosts, and soil temperature. The most effective method was absolute surface counts for both point estimates (39%) and cumulative efficacy (83%). CO2-baited traps reached a maximum efficacy of 37%, while blanket dragging and blanket flagging captured a maximum of the 8% of the marked ticks. Our results reveal the strengths and weaknesses of the different tick capture methods applied to adult H. lusitanicum and lay the groundwork for more accurate inferences about the true size of exophilic tick populations.

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“…110 In red deer, alfalfa baits were shown to have good consumption in target species with reduced consumption by nontarget species such as corvids. 114 In addition, care should be taken that bait distribution does not interfere with the local ecosystem and therefore should not provide essential nutrients or replace the natural foraging behaviour of wild animals. Reliance on bait for food source by wild life could upset the natural ecological balance, and lead to increased or decreased populations, depending on the quantity of bait deployed.…”

Section: Development Of Reservoir-targeted Vaccinesmentioning

confidence: 99%

“…Studies with Peromyscus leucopus mice showed that no attractant is needed to entice wild mice to bait consumption, 104 whereas the house mouse Mus musculus preferred canary and soft wheat baits 110 . In red deer, alfalfa baits were shown to have good consumption in target species with reduced consumption by nontarget species such as corvids 114 . In addition, care should be taken that bait distribution does not interfere with the local ecosystem and therefore should not provide essential nutrients or replace the natural foraging behaviour of wild animals.…”

Section: Reservoir‐targeted Vaccinesmentioning

confidence: 99%

Anti‐tick and pathogen transmission blocking vaccines

Oosterwijk

2021

Parasite Immunology

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Ticks and tick-borne diseases are a challenge for medical and veterinary public health and often controlled through the use of repellents and acaricides. Research on vaccination strategies to protect humans, companion animals, and livestock from ticks and tick-transmitted pathogens has accelerated through the use of proteomic and transcriptomic analyses. Comparative analyses of unfed versus engorged and uninfected versus infected ticks have provided valuable insights into candidates for antitick and pathogen transmission blocking vaccines. An intricate interplay between tick saliva and the host's immune system has revealed potential antigens to be used in vaccination strategies. Immunization of hosts with targeted anti-tick vaccines would ideally lead to a reduction in tick numbers and prevent transmission of tick-borne pathogens. Comprehensive control of tick-borne diseases would come from successful anti-tick vaccination, vaccination preventing transmission of tick-borne diseases or a combination. Due to the close interaction with wildlife and ticks, with wildlife reservoirs enabling propagation of pathogens between ticks, the vaccination of these reservoirs is an attractive target to reduce human contact with ticks and tick-borne diseases through a one-health approach. Wildlife vaccination presents formulation and regulatory challenges which should be considered early in the development of reservoir-targeted vaccines.

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Tuning oral-bait delivery strategies for red deer in Mediterranean ecosystems

Cited by 7 publications

References 39 publications

Testing the efficiency of capture methods for questing Hyalomma lusitanicum ticks (vector of Crimean-Congo hemorrhagic fever virus)

Testing the efficiency of capture methods for questing Hyalomma lusitanicum ticks (vector of Crimean-Congo hemorrhagic fever virus)

Testing the efficiency of capture methods for questing Hyalomma lusitanicum (Acari: Ixodidae), a vector of Crimean-Congo hemorrhagic fever virus

Anti‐tick and pathogen transmission blocking vaccines

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