The Dermacentor (Acari, Ixodida, Ixodidae) of Mexico: hosts, geographical distribution and new records

Guzmán-Cornejo, Carmen; Robbins, Richard G.; Guglielmone, Alberto A.; Montiel-Parra, Griselda; Rivas, Gerardo; Pérez, Teresa E.

doi:10.3897/zookeys.569.7221

Cited by 60 publications

(33 citation statements)

References 28 publications

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“…Dermacentor parumapertus ticks are distributed broadly across arid and semiarid regions of the western United States, and they extend also into several northern and central states of Mexico (44,45). Adult D. parumapertus ticks predominantly parasitize rabbits and hares, especially the black-tailed jackrabbit, although these ticks occasionally attach to larger mammals, including coyotes (Canis latrans), cattle (Bos taurus), and humans (46)(47)(48).…”

Section: Discussionmentioning

confidence: 99%

Unique Strain of Rickettsia parkeri Associated with the Hard Tick Dermacentor parumapertus Neumann in the Western United States

Paddock

Allerdice

Karpathy

et al. 2017

Appl Environ Microbiol

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In 1953, investigators at the Rocky Mountain Laboratories in Hamilton, MT, described the isolation of a spotted fever group Rickettsia (SFGR) species from Dermacentor parumapertus ticks collected from black-tailed jackrabbits (Lepus californicus) in northern Nevada. Several decades later, investigators characterized this SFGR (designated the parumapertus agent) by using mouse serotyping methods and determined that it represented a distinct rickettsial serotype closely related to Rickettsia parkeri; nonetheless, the parumapertus agent was not further characterized or studied. To our knowledge, no isolates of the parumapertus agent remain in any rickettsial culture collection, which precludes contemporary phylogenetic placement of this enigmatic SFGR. To rediscover the parumapertus agent, adult-stage D. parumapertus ticks were collected from black-tailed jackrabbits shot or encountered as roadkills in Arizona, Utah, or Texas from 2011 to 2016. A total of 339 ticks were collected and evaluated for infection with Rickettsia species. Of 112 D. parumapertus ticks collected in south Texas, 16 (14.3%) contained partial ompA sequences with the closest identity (99.6%) to Rickettsia sp. strain Atlantic rainforest Aa46, an SFGR that is closely related or identical to an SFGR species that causes a mild rickettsiosis in several states of Brazil. A pure isolate, designated strain Black Gap, was cultivated in Vero E6 cells, and sequence analysis of the rrs, gltA, sca0, sca5, and sca4 genes also revealed the closest genetic identity to Rickettsia sp. Atlantic rainforest Aa46. Phylogenetic analysis of the five concatenated rickettsial genes place Rickettsia sp. strain Black Gap and Rickettsia sp. Atlantic rainforest Aa46 with R. parkeri in a distinct and well-supported clade.IMPORTANCE We suggest that Rickettsia sp. Black Gap and Rickettsia sp. Atlantic rainforest Aa46 represent nearly identical strains of R. parkeri and that Rickettsia sp. Black Gap or a very similar strain of R. parkeri represents the parumapertus agent. The close genetic relatedness among these taxa, as well as the response of guinea pigs infected with the Black Gap strain, suggests that R. parkeri Black Gap could cause disease in humans. The identification of this organism could also account, at least in part, for the remarkable differences in severity ascribed to Rocky Mountain spotted fever (RMSF) among various regions of the American West during the early 20th century. We suggest that the wide variation in case fatality rates attributed to RMSF

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Section: Discussionmentioning

confidence: 99%

Unique Strain of Rickettsia parkeri Associated with the Hard Tick Dermacentor parumapertus Neumann in the Western United States

Paddock

Allerdice

Karpathy

et al. 2017

Appl Environ Microbiol

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“…Native artiodactyl and perissodactyl mammals are common hosts of this species. However, D. albipictus and D. variabilis, which are the most common species in Mexico, are also associated with native carnivora and lagomorpha that inhabit many states of the country [26,83].…”

Section: Discussionmentioning

confidence: 99%

“…Dispersal because they have an efficient water balance, which enables them to colonize new environments [80,85]. This resistance to desiccation combined with the association of adult Dermacentor ticks with wide distributed hosts [26] could explain the board distribution in Mexico (Figure 2).…”

Section: Discussionmentioning

confidence: 99%

“…This search was complicated by the controversial systematics and the difficult taxonomic diagnosis of the group as well as the general lack of study of the tick species of Mexico, with many species having a single record for the entire country. To reduce problems associated with misidentification, we cross-checked all records with the publications of the national collection of mites of the National Autonomous University of Mexico (CNAC-UNAM) [24][25][26]. It is important to note that many tick records in Mexico do not possess appropriate georeferencing, ambiguously indicating their location at the municipal or state level, data useless for the generation of species-specific ecological niche models.…”

Section: Tick Occurrence Datamentioning

confidence: 99%

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Ecological Niche Models of Four Hard Tick Genera (Ixodidae) in Mexico

Emilio

Moreno-Arzate

López‐González

2020

Animals

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Simple Summary: Vector-borne diseases currently represent a significant threat to public health, mainly due to the changes that humans are producing in ecosystems and climates. Analyzing the environmental conditions that allow the establishment and survival of ticks could help determine possible sites for the appearance of infectious outbreaks. In this study, nine ecological niche models were generated from different algorithms to determine the current potential distribution of four tick genera in Mexico. Temperature and moisture have been considered as the main factors limiting tick distribution. However, the analysis of the ecological niche models determined that the four genera exhibited different distribution patterns, which may be associated with their physiological and ecological differences. This type of analysis can improve our understanding of the dynamics of ticks and, therefore, can be very useful in monitoring programs of the diseases they transmit.Abstract: Ticks are vectors of a large number of pathogens of medical and veterinary importance, and in recent years, they have participated in the rise of multiple infectious outbreaks around the world. Studies have proposed that temperature and precipitation are the main variables that limit the geographical distribution of ticks. The analysis of environmental constraints with ecological niche modeling (ENM) techniques can improve our ability to identify suitable areas for emergence events. Algorithms used in this study showed different distributional patterns for each tick genera; the environmental suitability for Amblyomma includes warm and humid localities below 1000 m above the sea level, while Ixodes is mainly associated with ecosystems with high vegetation cover. Dermacentor and Rhipicephalus genus presented wider distribution patterns; the first includes species that are well adapted to resist desiccation, whereas the latter includes generalist species that are mostly associated with domestic hosts in Mexico. Ecological niche models have proven to be useful in estimating the geographic distribution of many taxa of ticks. Despite our limited knowledge of tick's diversity, ENM can improve our understanding of the dynamics of vector-borne diseases and can assist public health decision-making processes.

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“…Existen otras especies de ixódidos (Dermacentor sp., Amblyoma sp.) que pueden estar implicadas en la transmisión de R. rickettsii (Guzmán-Cornejo et al, 2011;Guzmán-Cornejo et al, 2016), sin embargo, hasta el momento solo R. sanguineus se ha visto involucrada en el ciclo de transmisión rickettsial en la Comarca Lagunera (Bustamante & Varela, 1947;Labruna et al, 2011); donde se han presentado múltiples casos de Fiebre Manchada en humanos (SINAVE, 2015). Los resultados de este estudio confirman la presencia de Rickettsia rickettsii como causante de Fiebre Manchada, en donde se señala a la garrapata R. sanguineus como vector de la bacteria R. rickettsii, por ser la especie de garrapata más ampliamente distribuida en la región.…”

Section: Discussionunclassified

Detección de rickettsia rickettsii brump (RICKETTSIALES: RICKETTSIACEAE) en la garrapata café del perro rhipicephalus sanguineus latreille (IXODIDA: IXODIDAE) en la comarca lagunera, zona reemergente de fiebre manchada en México

Castillo-Martínez

Cueto-Medina

Valdés-Perezgasga

et al. 2017

AZM

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RESUMEN. La Fiebre Manchada de las Montañas Rocosas es una enfermedad reemergente en la Comarca Lagunera, ya que en los últimos años se han reportado numerosos casos en pacientes humanos. Para detectar la presencia de Rickettsia rickettsii (Brumpt, 1922) en la garrapata café del perro, se realizaron colectas aisladas en siete áreas rurales y una área periurbana de la Comarca Lagunera de Coahuila y Durango, durante junio 2015 a febrero 2016. Se colectaron de manera directa 840 garrapatas hembras a repleción sobre 168 perros domésticos (cinco garrapatas por perro), las cuales se depositaron en viales de 2 ml. Las garrapatas se llevaron al Laboratorio de Parasitología de la Universidad Autónoma Agraria Antonio Narro Unidad Laguna, donde se identificaron como Rhipicephalus sanguineus (Latreille, 1806). Para el análisis molecular se eligieron al azar 3 garrapatas por muestra para conformar 195 pools, en cada uno de los cuales se realizó la extracción de órganos internos y contenido estomacal. Para obtener ADN de cada pool se empleó la técnica del CTAB, se amplificó el gen gltA mediante ensayos de PCR usando un termociclador y un iniciador genérico (Forward: RpCS.877p, Reverse: RpCS.1258n). Ocho pools resultaron positivos a Rickettsia rickettsii con una frecuencia del 6.9% (2/29) en la colonia Leticia Herrera (Gómez Palacio, Durango), taxonóun pool positivo (1/26= 3.85%) para Parras (Coahuila) y cinco pools para el municipio de Matamoros, Coahuila correspondientes a los ejidos Granada (2/28=7.1%), Alamito (1/23=4.35%), Consuelo (1/32=3.13%) y Vizcaya (1/19=5.25%). Por medio de una secuenciación se obtuvo una identidad del 100% a la cepa Brasileña 647 (KJ588069.1) de Rickettsia rickettsii y 99% de similitud con las extracciones del In-DRE (KU587806.1 y KT881097.1).

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The Dermacentor (Acari, Ixodida, Ixodidae) of Mexico: hosts, geographical distribution and new records

Cited by 60 publications

References 28 publications

Unique Strain of Rickettsia parkeri Associated with the Hard Tick Dermacentor parumapertus Neumann in the Western United States

Unique Strain of Rickettsia parkeri Associated with the Hard Tick Dermacentor parumapertus Neumann in the Western United States

Ecological Niche Models of Four Hard Tick Genera (Ixodidae) in Mexico

Detección de rickettsia rickettsii brump (RICKETTSIALES: RICKETTSIACEAE) en la garrapata café del perro rhipicephalus sanguineus latreille (IXODIDA: IXODIDAE) en la comarca lagunera, zona reemergente de fiebre manchada en México

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