دورية أكاديمية
أعرض في EDS

Seasonal dynamics of Amblyomma cajennense (Fabricius, 1787) sensu stricto in a degraded area of the Amazon biome, with notes on Rickettsia amblyommatis infection.

التفاصيل البيبلوغرافية
العنوان: Seasonal dynamics of Amblyomma cajennense (Fabricius, 1787) sensu stricto in a degraded area of the Amazon biome, with notes on Rickettsia amblyommatis infection.
المؤلفون: de Araújo FES; Post-Graduation Program in Health and Environment, Federal University of Maranhão, São Luís, MA, Brazil., Martins TF; Pasteur Institute, São Paulo State Department of Health, São Paulo, SP, Brazil.; Department of Preventive Veterinary Medicine and Animal Health, Faculty of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, Brazil., Ramos CCM; Post-Graduation Program in Animal Health Defense, State University of Maranhão, Maranhão, Brazil., Nogueira RMS; Post-Graduation Program in Health and Environment, Federal University of Maranhão, São Luís, MA, Brazil., Faccini JLH; Post-Graduation Program in Health Sciences, Center of Biological and Health Sciences, Federal University of Maranhão, São Luís, MA, Brazil., Tavares MA; Veterinary and Animal Science School, Federal University of Goiás, Goiânia, GO, Brazil., de Lima NJ; Veterinary and Animal Science School, Federal University of Goiás, Goiânia, GO, Brazil., de Almeida Júnior EB; Post-Graduation Program in Biodiversity and Conservation, Center of Biological and Health Sciences, Federal University of Maranhão, São Luís, MA, Brazil., de Sousa-Paula LC; Tick-Pathogen Transmission Unit, Laboratory of Bacteriology, National Institute of Allergy and Infectious Diseases, Hamilton, MT, USA., Dantas-Torres F; Department of Immunology, Aggeu Magalhães Institute, Oswaldo Cruz Foundation (Fiocruz), Recife, PE, Brazil., da Silva Krawczak F; Veterinary and Animal Science School, Federal University of Goiás, Goiânia, GO, Brazil., Costa-Junior LM; Post-Graduation Program in Northeast Biotechnology Network (RENORBIO), Biodiversity and Conservation, Center of Biological and Health Sciences, Federal University of Maranhão, São Luís, MA, Brazil., Labruna MB; Department of Preventive Veterinary Medicine and Animal Health, Faculty of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, Brazil., Dall Agnol LT; Post-Graduation Program in Health and Environment, Federal University of Maranhão, São Luís, MA, Brazil., Luz HR; Post-Graduation Program in Health and Environment, Federal University of Maranhão, São Luís, MA, Brazil. hermes.luz@ufma.br.; Post-Graduation Program in Northeast Biotechnology Network (RENORBIO), Biodiversity and Conservation, Center of Biological and Health Sciences, Federal University of Maranhão, São Luís, MA, Brazil. hermes.luz@ufma.br.
المصدر: Parasites & vectors [Parasit Vectors] 2023 Oct 27; Vol. 16 (1), pp. 391. Date of Electronic Publication: 2023 Oct 27.
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: BioMed Central Country of Publication: England NLM ID: 101462774 Publication Model: Electronic Cited Medium: Internet ISSN: 1756-3305 (Electronic) Linking ISSN: 17563305 NLM ISO Abbreviation: Parasit Vectors Subsets: MEDLINE
أسماء مطبوعة: Original Publication: London : BioMed Central
مواضيع طبية MeSH: Rickettsia*/genetics , Rickettsia Infections*/epidemiology , Rickettsia Infections*/microbiology , Ticks*/microbiology , Ixodidae*, Animals ; Humans ; Male ; Female ; Seasons ; Amblyomma ; Brazil/epidemiology ; Nymph/microbiology ; Larva/microbiology ; Ecosystem
مستخلص: Background: The tick Amblyomma cajennense sensu stricto (A. cajennense s.s.) frequently parasitizes animals and humans in the Amazon biome, in addition to being a vector of Rickettsia amblyommatis. In the present study, we evaluated both the population dynamics of A. cajennense s.s. in a degraded area of the Amazon biome and the presence of rickettsial organisms in this tick population.
Methods: The study was carried out in a rural area of the Santa Inês municipality (altitude: 24 m a.s.l.), Maranhão state, Brazil. Ticks were collected from the environment for 24 consecutive months, from June 2021 to May 2023. The region is characterized by two warm seasons: a rainy season (November-May) and a dry season (June-October). We characterized the temporal activity of A. cajennense s.s. on the vegetation by examining questing activity for each life stage (larvae, nymphs, adults [males and females]) in relation to the dry and rainy season. Ticks collected in this study were randomly selected and individually tested by a TaqMan real-time PCR assay that targeted a 147-bp fragment of the rickettsial gltA gene.
Results: Overall, 1843 (62.4%) adults (52.6% females, 47.4% males), 1110 (37.6%) nymphs and 398 larval clusters were collected. All adult females and nymphs were morphologically identified as A. cajennense s.s. Larval activity was observed from April to December, with a peak from June to September (dry season); nymph abundance peaked from September to November (transition period between dry and rainy seasons); and adult ticks were abundant from October to May (spring/summer/early autumn). The infection rate by R. amblyommatis in A. cajennense s.s. ticks was at least 7% (7/99).
Conclusion: Our data suggest a 1-year generation pattern for A. cajennense s.s., with a well-defined seasonality of larvae, nymphs and adults in the Amazon biome. Larvae predominate during the dry season, nymphs are most abundant in the dry-rainy season transition and adults are most abundant in the rainy season. The presence of R. amblyommatis in adult ticks suggests that animals and humans in the study region are at risk of infection by this species belonging to the spotted fever group of Rickettsia.
(© 2023. The Author(s).)
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معلومات مُعتمدة: 088.990.417-09 Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
فهرسة مساهمة: Keywords: Amazon region; Amblyomma cajennense; Brazil; Ixodidae; Population dynamics; Rickettsia
SCR Organism: Rickettsia amblyommatis
تواريخ الأحداث: Date Created: 20231027 Date Completed: 20231030 Latest Revision: 20231030
رمز التحديث: 20231030
مُعرف محوري في PubMed: PMC10612284
DOI: 10.1186/s13071-023-05978-9
PMID: 37891604
قاعدة البيانات: MEDLINE
الوصف
تدمد:1756-3305
DOI:10.1186/s13071-023-05978-9