Biology of Ticks

Anderson, John F.; Magnarelli, Louis A.

doi:10.1016/j.idc.2007.12.006

Cited by 274 publications

(261 citation statements)

References 24 publications

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“…These 2-km resolution meteorological surfaces were derived from elevation weighted interpolated weather station data. Because of the importance of moisture to tick survival, 1, 13, 33 we tested the average relative humidity for the year (range for this area was 65-71%), the month of sampling (June) and the month prior (May), and total annual precipitation as possible independent variables. Five measures of temperature (annual maximum, minimum, average, cooling degree days [number of days > 18.3°C], and growing degree days [number of days > 10°C]) were tested in the model because tick host-seeking behavior, most likely caused by desiccating effects, is shown to be sensitive to temperature in Missouri.…”

Section: Methodsmentioning

confidence: 99%

“…Of the 878 identified tick species, 222 are known to feed on humans; 28 of which are known to transmit human pathogens. 1 Despite prevention and control efforts, reported tickborne disease incidence has continued to increase in the United States over the past decade. Based on the 2007 Summary of Notifiable Diseases, human monocytic ehrlichiosis and anaplasmosis have increased by more than 100% since 2003.…”

Section: Introductionmentioning

confidence: 99%

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An Acarologic Survey and Amblyomma americanum Distribution Map with Implications for Tularemia Risk in Missouri

Brown

Yates

Dietrich³

et al. 2011

The American Society of Tropical Medicine and Hygiene

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Abstract. In the United States, tickborne diseases occur focally. Missouri represents a major focus of several tickborne diseases that includes spotted fever rickettsiosis, tularemia, and ehrlichiosis. Our study sought to determine the potential risk of human exposure to human-biting vector ticks in this area. We collected ticks in 79 sites in southern Missouri during June 7-10, 2009, which yielded 1,047 adult and 3,585 nymphal Amblyomma americanum , 5 adult Amblyomma maculatum , 19 adult Dermacentor variabilis , and 5 nymphal Ixodes brunneus . Logistic regression analysis showed that areas posing an elevated risk of exposure to A. americanum nymphs or adults were more likely to be classified as forested than grassland, and the probability of being classified as elevated risk increased with increasing relative humidity during the month of June (30-year average). Overall accuracy of each of the two models was greater than 70% and showed that 20% and 30% of the state were classified as elevated risk for human exposure to nymphs and adults, respectively. We also found a significant positive association between heightened acarologic risk and counties reporting tularemia cases. Our study provides an updated distribution map for A. americanum in Missouri and suggests a wide-spread risk of human exposure to A. americanum and their associated pathogens in this region.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An Acarologic Survey and Amblyomma americanum Distribution Map with Implications for Tularemia Risk in Missouri

Brown

Yates

Dietrich³

et al. 2011

The American Society of Tropical Medicine and Hygiene

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“…Con garrapatas en la ciudad, hembras y machos Tabla 2, más temperaturas elevadas de manera significativa en las últimas décadas (9) registros que distan de primeros reportes meteorológicos con máximas de 14°C y mínimas de 9.9 °C tomados en 1807 (57) y una proporción canina-humana de 1:10.86 ligeramente por encima del promedio para la ciudad de Bogotá (42), junto a la biología de este artrópodo como ectoparásito de tipo generalista, con requerimiento de varios huéspedes para completar su ciclo (58) y capacidad de sobrevivir sin alimentarse por un año (58,59), las condiciones están dadas para establecimiento de ciclos biológicos exitosos de garrapatas en la ciudad.…”

Section: Discussionunclassified

Garrapatas (Acari: Ixodidae) prevalentes en caninos no migrantes del noroccidente de Bogotá, Colombia

Acero¹,

Calixto²,

Prieto³

2011

nova

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ResumenEl presente trabajo tuvo como objetivo identificar garrapatas duras (Acari: Ixodidae) en caninos domiciliados dentro de la ciudad de Bogotá, el riesgo poblacional de zoonosis trasmitidas por las garrapatas identificadas Rhipicephalus sanguineus, Rhipicephalus (Boophilus) microplus y Amblyomma maculatum, generan la necesidad de cambios de los paradigmas que orientan las políticas en salud pública. Para el desarrollo del estudio se trabajo en tres clínicas veterinarias particulares durante el año 2010. Se recolectaron garrapatas de caninos domiciliados y que demostraron sus propietarios estancia permanente dentro de la ciudad de Bogotá. Las garrapatas se colectaron de forma manual y se fijaron en Formol al 10 %. Un total de 799 canidos cumplieron el criterio de inclusión, se hallaron un total de 34 garrapatas (una por animal) lo que constituyó una tasa de infestación de 4,25%. Palabras clave: Rhipicephalus sanguineus, Rhipicephalus (Boophilus) microplus, Amblyoma maculantum, Calentamiento GlobalAbstract ticks (Acari: ixodidae) prevalent in canine non-migrants in northwestern bogotá, colombia This is the first study that identifies hard ticks (Acari: Ixodidae) in dogs residing in the city of Bogota, changes in the paradigms that guide public health policies are becoming necessary the population risk of zoonosis transmitted Rhipicephalus sanguineus by ticks, Rhipicephalus (Boophilus) microplus and Amblyomma maculatum. Three private veterinary clinics during 2010 were collected ticks and domiciled canines showed their own permanent residence within the city of Bogota. Ticks were collected manually and fixed in formol 10%. A total of 799 dogs met the inclusion criteria, there were a total of 34 ticks (one per animal), which was an infestation rate of 4.25%.

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“…During this development, ticks go through four life stages. These stages are egg, larvae (or seed tick), nymph, and adult (1,5). Ixodidae ticks mainly belong to three host life cycle group of ticks, while during each developmental stage it feeds once on a separate host and will remain attached to the host for several days (8,43).…”

Section: Introductionmentioning

confidence: 99%

Tick Population in Goats and Sheep in Šabac

Pavlović

Ivanović

Dimitrić³

et al. 2016

Macedonian Veterinary Review

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Original Scientific ArticleMacinermis. Additional to determination of tick species during the research, the sex ratio and the monthly influence of microclimate conditions (temperature, relative humidity and precipitation quantity) on the dynamics of populations of ticks were followed. Obtained results indicate the importance of the impact of climatic factors on the population dynamics of some species of ticks as well as the dynamics and abundance of different sexes within established species of ticks.

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Biology of Ticks

Cited by 274 publications

References 24 publications

An Acarologic Survey and Amblyomma americanum Distribution Map with Implications for Tularemia Risk in Missouri

An Acarologic Survey and Amblyomma americanum Distribution Map with Implications for Tularemia Risk in Missouri

Garrapatas (Acari: Ixodidae) prevalentes en caninos no migrantes del noroccidente de Bogotá, Colombia

Tick Population in Goats and Sheep in Šabac

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