Rhipicephalus microplus seasonal dynamic in a Cerrado biome, Brazil: An update data considering the global warming

Nicaretta, João Eduardo; Zapa, Dina María Beltrán; Couto, Luiz Fellipe Monteiro; Heller, Luciana Maffini; Cavalcante, Alliny Souza de Assis; Cruvinel, Leonardo Bueno; Júnior, Rubens Dias de Melo; Ferreira, Lorena Lopes; Nascimento, Rafael Moreira do; Soares, Vando Edésio; Borges, Lígia Miranda Ferreira; Monteiro, Caio Márcio de Oliveira; Lopes, Welber Daniel Zanetti

doi:10.1016/j.vetpar.2021.109506

Cited by 23 publications

(23 citation statements)

References 31 publications

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“…Temperature and relative humidity are essential in the non-parasitic phase of R. ( B. ) microplus , often modeling the population dynamics of this Ixodidae in the pasture (e.g., seasonality and density) [ 1 , 5 , 18 ]. During the study of the non-parasitic phase of R .…”

Section: Discussionmentioning

confidence: 99%

Biology of the non-parasitic phase of the cattle tick Rhipicephalus (Boophilus) microplus in an area of Amazon influence

Sales,

Silva-Junior,

Tavares

et al. 2024

Parasites Vectors

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Background Rhipicephalus (Boophilus) microplus is the most important tick species affecting cattle in the world. Under field conditions, the non-parasitic phase of R. (B.) microplus is unknown in the Amazon biome, including Brazil. The present study aimed to evaluate the non-parasitic phase of R. (B.) microplus in field (grass plots) and laboratory conditions. Methods The study was conducted from September 2020 to April 2022 in an Amazonian region (Maranhão State, Brazil). We evaluated the biological parameters of R. (B.) microplus under laboratory and field conditions. Engorged females were exposed to experimental conditions every 14 days, totaling 20 months of study. The following biological parameters were observed: pre-oviposition period, egg mass incubation period, and maximum larval survival period. Results Abiotic data (e.g., temperature and humidity) varied little throughout the year. Precipitation was the factor that varied the most throughout the year (dry ~ 30 mm3 and rain 400 mm3), and the parameters of pre-oviposition and pre-hatching are longer during the rainy season. A possible negative effect of the dry season on the percentage of hatched eggs was observed. Larval longevity in the plots of both control and free females was short (mean ~ 50–60 days), below that recorded for larvae under controlled conditions (mean ~ 95 days). Conclusions Rhipicephalus (Boophilus) microplus was able to complete its non-parasitic phase by producing host-seeking larvae in the pasture during all months of the study. The results indicate that R. (B.) microplus can complete up to six generations per year in biome Amazon. To our knowledge, this is the highest number of annual generations for R. (B.) microplus in Latin America. Graphical Abstract

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Section: Discussionmentioning

confidence: 99%

Biology of the non-parasitic phase of the cattle tick Rhipicephalus (Boophilus) microplus in an area of Amazon influence

Sales,

Silva-Junior,

Tavares

et al. 2024

Parasites Vectors

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“…In fact, previous studies reported that H. bacteriophora caused mortality to several pests even when exposed to high temperatures, 55,56 although temperatures above 32°C may impair their reproduction, activity and viability 57 . The field conditions under which the study was conducted were also challenging for R. microplus during its non‐parasitic phase; 58 however, the micro‐environment in pasture plots provided suitable conditions for the development of R. microplus , as shown by the high number of larvae recovered from the control groups.…”

Section: Discussionmentioning

confidence: 99%

From the laboratory to the field: efficacy of entomopathogenic nematodes to control the cattle tick

Gomes

Matos²,

Barreto

et al. 2022

Pest Management Science

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BACKGROUND:The control of ticks is challenged by the resistance of tick populations to chemical acaricides. In this study, we evaluated, under laboratory conditions, the efficacy of Heterorhabditis bacteriophora against Rhipicephalus (Boophilus) microplus engorged females with varying body weights (150, 200, 250, 300 or 350 mg per female) or from eight different geographical populations. We also determined the efficacy of H. bacteriophora for tick control under field conditions. RESULTS: R. microplus engorged females with varying body weights exposed to 150 juveniles of H. bacteriophora resulted in a high control efficacy (97.5% to 98.4%). Tests with females from different geographical populations comprised eight tick strains treated with H.bacteriophoraandtheirrespectivecontrolgroups.Thebiologicalparametersoffemalesexposedtonematodetreatmentsdidnotdiffer significantly and resulted in 89% to 99% of control efficacy. Trials conducted under field conditions were performed in field plots with Megathyrsusmaximusgrass.TreatmentgroupsreceivedeightcadaversofTenebriomolitorfully colonizedwithH.bacteriophoraat1 week prior to the release of female ticks, whereas control groups were untreated. On the first day of the experiment, six engorged females were distributed in each plot. On day 42 and day 63, the apical portion of the grasses with R. microplus larvae were collected and quantified. The population of R. microplus larvae was reduced up to 73.1% in plots treated with H. bacteriophora at day 63 after treatment. CONCLUSION: R. microplus engorged females with varying body weights or from different geographical populations were highly susceptible to H. bacteriophora. The field test demonstrated the efficacy of H. bacteriophora in reducing R. microplus larvae in infested pastures.

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“…Even if there are a few schemes that support multi-keyword Boolean search, they are found to have extremely low storage efficiency and search efficiency [9], [10], [11], [12]. At the same time, most of traditional search schemes over ciphertexts do not support dynamic update [13], [14], [15] of keyword indices, this obviously cannot meet the actual needs of users.…”

Section: B Exsisting Problemsmentioning

confidence: 99%

A Rankable Boolean Searchable Encryption Scheme Supporting Dynamic Updates in a Cloud Environment

Guo

Geng

et al. 2023

IEEE Access

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At present, three problems exist in searchable encryption in cloud storage services: firstly, most traditional searchable encryption schemes only support single-keyword search while fail to perform Boolean searches; even if a few schemes support Boolean searching, the storage efficiency is also unsatisfactory. Secondly, most existing schemes do not support dynamic keyword updates, so the update efficiency is low. Thirdly, most existing schemes cannot meet all demands of users, to perform rankable searching over search files according to the importance of keywords. To solve these problems, a rankable Boolean searchable encryption scheme supporting dynamic updates in a cloud environment (RBDC) is proposed. By using Paillier and GM encryption algorithms, secure indices supporting dynamic updating are established. Based on applicable knowledge gleaned from cryptography and set theory, the indices of keyword intersections and the intersection search trapdoors are constructed to achieve multi-keyword Boolean search. With assistance of the SCP, score indices of each file are constructed according to the TF-IDF index, which allow ranking of files. Security analysis proofs that our scheme can ensure security in the known ciphertext model and the known background model. Experimental results prove that the scheme improves the search efficiency and the index storage efficiency.

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Rhipicephalus microplus seasonal dynamic in a Cerrado biome, Brazil: An update data considering the global warming

Cited by 23 publications

References 31 publications

Biology of the non-parasitic phase of the cattle tick Rhipicephalus (Boophilus) microplus in an area of Amazon influence

Biology of the non-parasitic phase of the cattle tick Rhipicephalus (Boophilus) microplus in an area of Amazon influence

From the laboratory to the field: efficacy of entomopathogenic nematodes to control the cattle tick

A Rankable Boolean Searchable Encryption Scheme Supporting Dynamic Updates in a Cloud Environment

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