scholarly journals Detección de “ Candidatus Rickettsia andeanae” en Rhipicephalus sanguineus sensu stricto (Acari: Ixodidae) en Rapa Nui-Isla de Pascua

2021 ◽  
Vol 38 (4) ◽  
pp. 548-554
Author(s):  
Ignacio Troncoso-Toro ◽  
Sebastián Muñoz-Leal ◽  
Michele Thompson ◽  
Jaime Salinas ◽  
Elizabeth Varas ◽  
...  
Keyword(s):  
Rhipicephalus Sanguineus ◽  
Sensu Stricto ◽  
Rapa Nui

Expansion in the latitudinal distribution of Rhipicephalus sanguineus sensu stricto (Acari: Ixodidae) to southern Chile

2020 ◽  
Vol 83 (1) ◽  
pp. 107-114
Author(s):  
Pablo Oyarzún-Ruiz ◽  
Mario Espinoza-Carniglia ◽  
Scarlet Reidembach ◽  
Pamela Muñoz ◽  
Lucila Moreno
Keyword(s):  
Rhipicephalus Sanguineus ◽  
Sensu Stricto ◽  
Latitudinal Distribution ◽  
Southern Chile

Resistance to deltamethrin, fipronil and ivermectin in the brown dog tick, Rhipicephalus sanguineus sensu stricto, Latreille (Acari: Ixodidae)

2019 ◽  
Vol 10 (5) ◽  
pp. 1046-1050 ◽  
Author(s):  
Simone Becker ◽  
Anelise Webster ◽  
Rovaina L. Doyle ◽  
João Ricardo Martins ◽  
José Reck ◽  
...  
Keyword(s):  
Rhipicephalus Sanguineus ◽  
Sensu Stricto ◽  
Brown Dog Tick ◽  
Dog Tick

scholarly journals Molecular detection of pathogens in ticks and fleas collected from companion dogs and cats in East and Southeast Asia

2020 ◽  
Author(s):  
Viet-Linh Nguyen ◽  
Vito Colella ◽  
Grazia Greco ◽  
Fang Fang ◽  
Wisnu Nurcahyo ◽  
...  
Keyword(s):  
Southeast Asia ◽  
Rhipicephalus Sanguineus ◽  
Sensu Stricto ◽  
The Philippines ◽  
Hepatozoon Canis ◽  
Rickettsia Felis ◽  
Companion Dogs ◽  
Babesia Vogeli ◽  
East And Southeast Asia ◽  
Vector Borne

Abstract Background: Ticks and fleas are considered amongst the most important arthropod vectors of medical and veterinary concern due to their ability to transmit pathogens to a range of animal species including dogs, cats and humans. By sharing a common environment with humans, companion animal-associated parasitic arthropods may potentially transmit zoonotic vector-borne pathogens (VBPs). This study aimed to molecularly detect pathogens from ticks and fleas from companion dogs and cats in East and Southeast Asia.Methods: A total of 392 ticks and 248 fleas were collected from 401 infested animals (i.e. 271 dogs and 130 cats) from China, Taiwan, Indonesia, Malaysia, Singapore, Thailand, the Philippines and Vietnam, were molecularly screened for the presence of pathogens. Ticks were tested for Rickettsia spp., Anaplasma spp., Ehrlichia spp., Babesia spp. and Hepatozoon spp. while fleas were screened for the presence of Rickettsia spp. and Bartonella spp.Result: Of the 392 ticks tested, 37 (9.4%) scored positive for at least one pathogen with Hepatozoon canis being the most prevalent (5.4%), followed by Ehrlichia canis (1.8%), Babesia vogeli (1%), Anaplasma platys (0.8%) and Rickettsia spp. (1%) [including Rickettsia sp. (0.5%), Rickettsia asembonensis (0.3%) and Rickettsia felis (0.3%)]. Out of 248 fleas tested, 106 (42.7%) were harboring at least one pathogen with R. felis being the most common (19.4%), followed by Bartonella spp. (16.5%), Rickettsia asembonensis (10.9%) and “Candidatus Rickettsia senegalensis” (0.4%). Furthermore, 35 Rhipicephalus sanguineus ticks were subjected to phylogenetic analysis, of which 34 ticks belonged to the tropical and only one belonged to the temperate lineage (Rh. sanguineus (sensu stricto)). Conclusion: Our data reveals the circulation of different VBPs in ticks and fleas of dogs and cats from Asia, including zoonotic agents, which may represent a potential risk to animal and human health.

scholarly journals Molecular Detection of Pathogens in Ticks and Fleas Collected from Companion Dogs and Cats in East and Southeast Asia

2020 ◽  
Author(s):  
Viet-Linh Nguyen ◽  
Vito Colella ◽  
Grazia Greco ◽  
Fang Fang ◽  
Wisnu Nurcahyo ◽  
...  
Keyword(s):  
Southeast Asia ◽  
Animal Species ◽  
Rhipicephalus Sanguineus ◽  
Sensu Stricto ◽  
Hepatozoon Canis ◽  
Rickettsia Felis ◽  
Companion Dogs ◽  
Babesia Vogeli ◽  
East And Southeast Asia ◽  
Vector Borne

Abstract Background: Ticks and fleas are considered amongst the most important arthropod vectors of medical and veterinary concern due to their ability to transmit pathogens to a range of animal species including dogs, cats and humans. By sharing a common environment with humans, companion animal-associated parasitic arthropods may potentially transmit zoonotic vector-borne pathogens (VBPs). This study aimed to molecularly detect pathogens from ticks and fleas from companion dogs and cats in East and Southeast Asia.Methods: A total of 392 ticks and 248 fleas were collected from 401 infested animals (i.e., 271 dogs and 130 cats) to molecularly screened for the presence of pathogens. Ticks were tested for Rickettsia spp., Anaplasma spp., Ehrlichia spp., Babesia spp. and Hepatozoon spp. while fleas were screened for the presence of Rickettsia spp. and Bartonella spp.Result: Of the 392 ticks tested, 37 (9.4%) scored positive for at least one pathogen with Hepatozoon canis being the most prevalent (5.4%), followed by Ehrlichia canis (1.8%), Babesia vogeli (1%), Anaplasma platys (0.8%) and Rickettsia spp. (1%) [including Rickettsia sp. (0.5%), Rickettsia asembonensis (0.3%), Rickettsia felis (0.3%)]. Out of 248 fleas tested, 106 (42.7%) were harboring at least one pathogen with R. felis being the most common (19.4%), followed by Bartonella spp. (16.5%), Rickettsia asembonensis (10.9%) and Candidatus Rickettsia senegalensis (0.4%). Furthermore, 35 Rhipicephalus sanguineus ticks were subjected to phylogenetic analysis, of which 34 ticks belonged to the tropical and only one belonged to the temperate lineage (Rh. sanguineus sensu stricto). Conclusion: Our data reveals the circulation of different VBPs in ticks and fleas of dogs and cats from Asia, including zoonotic agents, which may represent a potential risk to animal and human health.

scholarly journals Primer reporte de un caso de ehrlichiosis monocítica canina en la provincia de Santa Fe, Argentina

2019 ◽  
Vol 18 (2) ◽  
pp. 49-54 ◽  
Author(s):  
Evelina L. TARRAGONA ◽  
Fernando S. FLORES ◽  
Candelaria L. HERRERA ◽  
Miriam DALINGER ◽  
Nerina AGUIRRE ◽  
...  
Keyword(s):  
Buenos Aires ◽  
Rhipicephalus Sanguineus ◽  
Sensu Stricto ◽  
Ehrlichia Canis ◽  
Santa Fe ◽  
Rhipicephalus Sanguineus Sensu Lato

La ehrlichiosis monocítica canina (EMC) es una enfermedad causada por la bacteria intracelular obligada Ehrlichia canis (Rickettsiales, Anaplasmataceae). La EMC es de importancia en salud animal por ser considerada de alta mortalidad en caninos domésticos, con distribución mundial; con síntomas inespecíficos como fiebre alta, depresión, letargia, anorexia y signos clínicos como linfoadenomegalia, esplenomegalia y trombocitopenia con tendencia hemorrágica, por lo que su diagnostico es un desafío en el entorno clínico. Ehrlichia canis es transmitida a un hospedador susceptible por ninfas y adultos de la garrapata Rhipicephalus sanguineus sensu lato. El taxón R. sanguineus s.l. representa un complejo de especies asociadas a caninos domésticos con distribución cosmopolita y particularmente en la región Neotropical se reconocen dos linajes: tropical y templado. El linaje templado, que representa a R. sanguineus sensu stricto, siendo el límite geográfico que separa ambos linajes una zona ecotonal situada entre 24 ° y 25 ° de latitud sur. En condiciones experimentales, R. sanguineus s.s. (linaje presente en la región centro de Argentina) demostró no tener competencia vectorial para transmitir E. canis (cepa Jaboticabal, Brasil) pero si R. sanguineus s.l. del linaje tropical. Sin embargo, estudios recientes han determinado molecularmente la infección con E. canis en muestras de sangre de perros con diagnóstico presuntivo de EMC en la provincia de Buenos Aires, dónde prevalece R. sanguineus s.s. Además, poblaciones de R. sanguineus s.l. (LT) y R. sanguineus s.s. de las provincias de Formosa y Buenos Aires, respectivamente, se detectaron naturalmente infectadas con E. canis. El presente informe de caso es el primer reporte de caso confirmado de EMC por E. canis en un canino de la ciudad de Rafaela, Santa Fe, área endémica de R. sanguineus s.s.

scholarly journals Vector competence of Rhipicephalus sanguineus sensu stricto for Anaplasma platys

2020 ◽  
Vol 11 (6) ◽  
pp. 101517 ◽  
Author(s):  
Alyssa N. Snellgrove ◽  
Inna Krapiunaya ◽  
Shelby L. Ford ◽  
Hannah M. Stanley ◽  
Alexandra G. Wickson ◽  
...  
Keyword(s):  
Vector Competence ◽  
Rhipicephalus Sanguineus ◽  
Sensu Stricto ◽  
Anaplasma Platys

scholarly journals Distribución anatómica de Rhipicephalus sanguineus sensu stricto (Acari: Ixodidae) sobre caninos domésticos

2020 ◽  
Vol 19 (1) ◽  
pp. 30-34
Author(s):  
Viviana ORCELLET ◽  
Santiago NAVA
Keyword(s):  
Rhipicephalus Sanguineus ◽  
Sensu Stricto ◽  
Santa Fe ◽  
Para Determinar

En este trabajo se realizó el estudio de la distribución anatómica de los diferentes estadios de Rhipicephalus sanguineus sensu stricto sobre sus hospedadores principales, los caninos. El mismo se basó en muestreos mensuales durante tres años en la ciudad de Esperanza, Santa Fe, Argentina. Para determinar la distribución de los diferentes estadios parasitarios se dividió el cuerpo en regiones y se colectaron todos los especímenes en cada una de ellas.  Las larvas tuvieron como preferencia las zonas de cabeza seguido de los espacios interdigitales, orejas y abdomen; las ninfas tuvieron preferencia por las orejas y abdomen, y otras zonas de preferencia fueron cabeza y espacios interdigitales; los adultos (machos y hembras) prefirieron localizarse en las orejas, cuello y lomo.

Current status of resistance to ivermectin in Rhipicephalus sanguineus sensu stricto infesting dogs in three provinces in Argentina

2021 ◽  
pp. 100624
Author(s):  
Martín R. Daniele ◽  
Martín M. Dadé ◽  
José D. Álvarez ◽  
Francisco J. Reynaldi ◽  
Jorge O. Errecalde ◽  
...  
Keyword(s):  
Rhipicephalus Sanguineus ◽  
Sensu Stricto ◽  
Current Status
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