Article
Entomology
Jorgelina Torrents, Macarena Sarli, Nestor F. Sarmiento, Maria V. Rossner, Nicolas Morel, Alberto A. Guglielmone, Santiago Nava
Summary: This study reports the presence of resistance to fluazuron in an Argentina population of Rhipicephalus microplus. Both field and in vitro trials were conducted to gather evidence. The results showed that the population exhibited a higher level of resistance to fluazuron, indicating the emergence of resistance. This highlights the need for control strategies that minimize the use of this drug to preserve its functionality as an acaricide.
EXPERIMENTAL AND APPLIED ACAROLOGY
(2022)
Article
Parasitology
Brian T. Rich, Donald B. Thomas, Michael T. Longnecker, Douglas R. Tolleson, Jay Angerer, Adalberto A. Perez de Leon, Pete D. Teel
Summary: Surveillance for cattle fever ticks is crucial in preventing the reestablishment of tick vectors causing bovine babesiosis in the U.S. This study aimed to determine if infestation of Rhipicephalus microplus larvae induced detectable changes in fecal chemistry. Near-infrared reflectance spectroscopy was used to analyze fecal samples from infested and non-infested cattle, revealing significant differences in fecal spectra associated with different stages of tick infestation.
VETERINARY PARASITOLOGY
(2022)
Article
Microbiology
Patricia Paulino, Gabriela Vitari, Antonio Rezende, Joana Couto, Sandra Antunes, Ana Domingos, Maristela Peckle, Carlos Massard, Flavio Araujo, Huarrisson Santos
Summary: This study characterized the sialotranscriptome profile of Rhipicephalus (Boophilus) microplus in response to Theileria equi and identified genes with differential genomic expression. The analysis revealed potential targets in the tick-protozoan interactions, providing valuable information for future studies and biotechnological applications.
Article
Multidisciplinary Sciences
Jesus Rojas-Jaimes, David Lindo-Seminario, German Correa-Nunez, Benoit Diringer
Summary: The microbiome of ticks collected from collared peccaries in the Amazon region of Madre de Dios, Peru, was characterized for the first time, revealing the presence of potentially pathogenic bacterial genera such as Salmonella and Vibrio. These findings are important for understanding the pathogenic potential of R. microplus and the potential implications of these bacteria for public and animal health.
SCIENTIFIC REPORTS
(2021)
Article
Parasitology
Glen A. Scoles, Hala E. Hussein, Cassandra L. Olds, Kathleen L. Mason, Sara K. Davis
Summary: Vaccination with antibodies against RmAQP2 can reduce the number of cattle fever ticks on cattle, but the mechanism of action has not been confirmed. Further research is needed to determine the mechanism and whether these vaccine targets can be effective components of an anti-tick vaccine cocktail.
PARASITES & VECTORS
(2022)
Article
Parasitology
Hsiao-Hsuan Wang, William E. Grant, Pete D. Teel, Kimberly H. Lohmeyer, Adalberto A. Perez de Leon
Summary: This study used a spatially explicit, individual-based model to explore the effects of host species composition and habitat use patterns on the dynamics of southern cattle fever ticks (SCFT) infestation and eradication schemes. The results showed that host species and habitat preferences can impact off-host larval densities and eradication efforts, providing insights for preventing wildlife-mediated impacts on SCFT eradication.
PARASITES & VECTORS
(2021)
Article
Parasitology
Juan P. Wulff, Kevin B. Temeyer, Jason P. Tidwell, Kristie G. Schlechte, Caixing Xiong, Kimberly H. Lohmeyer, Patricia Pietrantonio
Summary: This study found that silencing the pyrokinin receptor (Rhimi-PKR) in R. microplus ticks negatively affected female reproductive fitness, including increased mortality and decreased weight.
PARASITES & VECTORS
(2022)
Article
Veterinary Sciences
Santiago Nava, Ignacio J. Gamietea, Nicolas Morel, Alberto A. Guglielmone, Agustin Estrada-Pena
Summary: This study aimed to analyze the ability of temperate areas to support permanent populations of the cattle tick Rhipicephalus microplus. The results showed that the southern limit for the establishment of permanent populations is approximately 31 degrees S. The introduction of infested cattle in temperate areas could lead to the establishment of permanent populations. The temperature-based habitat models overestimated the potential dispersal of the cattle tick.
RESEARCH IN VETERINARY SCIENCE
(2022)
Article
Parasitology
Moises Martinez Velazquez, Carla Patricia Barragan Alvarez, Jose Miguel Flores Fernandez, Rodolfo Esteban Lagunes Quintanilla, Edgar Castro Saines, Patricia Berenice Ramirez Rodriguez, Sara Elisa Herrera Rodriguez, Rodolfo Hernandez Gutierrez, Abel Gutierrez Ortega, Angel H. Alvarez
Summary: This study evaluated Cys-loop receptors as vaccine candidates against Rhipicephalus microplus ticks. Recombinant proteins of glutamate and glycine-like receptors were produced, tested in mice and then in cattle, showing moderate immunogenicity in both animal models. The vaccine candidates had significant impact on the number of engorged adult female ticks in vaccinated cattle, with vaccine efficacies of 33% and 25% calculated for the two receptors.
Article
Microbiology
Elianne Piloto-Sardinas, Angelique Foucault-Simonin, Alejandra Wu-Chuang, Lourdes Mateos-Hernandez, Roxana Marrero-Perera, Lianet Abuin-Denis, Lisset Roblejo-Arias, Cristian Diaz-Corona, Zbigniew Zajac, Joanna Kulisz, Aneta Wozniak, Sara Moutailler, Belkis Corona-Gonzalez, Alejandro Cabezas-Cruz
Summary: This study investigated tick-borne pathogens (TBPs) in cattle and ticks using real-time microfluidic PCR. Results showed that Rhipicephalus microplus ticks were found infesting all animals. Among the detected TBPs in cattle, Anaplasma marginale was the most frequently identified, often as a single infection. Mixed infections involving Rickettsia felis, uncharacterized Rickettsia sp., and Anaplasma sp. were also observed. In ticks, A. marginale was the predominant pathogen, along with R. felis, Rickettsia sp., and Ehrlichia sp. Phylogenetic analysis revealed the presence of A. marginale and Anaplasma platys strains in bovines. These findings highlight the importance of understanding TBP dynamics and phylogenetics for effective control strategies in livestock.
Article
Entomology
Sherwin L. Alota, Tisha Rogelle J. Edquiban, Remil L. Galay, John Michael G. Bernardo, Kristina Andrea C. Sandalo, Billy P. Divina, Tetsuya Tanaka
Summary: Tick infestations and tick-borne diseases are major economic burdens in the cattle industry worldwide. Amitraz, a commonly used acaricide, has shown resistance in many countries but not in the Philippines. This study found no apparent resistance to amitraz in cattle ticks from various provinces in the Philippines, although genetic analysis revealed some similarities to known resistant strains. Prudent use of amitraz is recommended to prevent potential development of resistance.
EXPERIMENTAL AND APPLIED ACAROLOGY
(2021)
Article
Parasitology
Joao Eduardo Nicaretta, Dina Maria Beltran Zapa, Luiz Fellipe Monteiro Couto, Luciana Maffini Heller, Alliny Souza de Assis Cavalcante, Leonardo Bueno Cruvinel, Rubens Dias de Melo Junior, Lorena Lopes Ferreira, Rafael Moreira do Nascimento, Vando Edesio Soares, Ligia Miranda Ferreira Borges, Caio Marcio de Oliveira Monteiro, Welber Daniel Zanetti Lopes
Summary: This study conducted a two-year evaluation of the seasonal dynamics of Rhipicephalus microplus in a Cerrado biome in midwestern Brazil, correlating current climatic conditions with those of 30 years ago. The results suggest that climate change, particularly increasing environmental temperatures due to global warming, may be a determining factor in the increase of tick population density and number of annual peaks of R. microplus.
VETERINARY PARASITOLOGY
(2021)
Article
Parasitology
Kaue Rodriguez Martins, Marcos Valerio Garcia, Paulino Bonatte-Junior, Pamella Oliveira Duarte, Barbara Guimaraes Csordas, Leandro de Oliveira Souza Higa, Namor Pinheiro Zimmermann, Jacqueline Cavalcante Barros, Renato Andreotti
Summary: This study investigated the relationship between the number of ticks and the number of Babesia bigemina cytochrome b gene copies in the blood of Brangus and Nellore cattle. The results showed that Nellore cattle had fewer ticks but a higher number of Babesia bigemina cytochrome b gene copies compared to Brangus cattle.
PARASITES & VECTORS
(2022)
Article
Infectious Diseases
Maria Florencia Ortega, Guillermo Giovambattista, Christian Cutulle, Daniel Dos Santos, Santiago Nava, Martin Bonamy, Fernando Holgado
Summary: The objective of this study was to assess the infestation levels of Rhipicephalus (Boophilus) microplus in Argentine Creole cattle breed. Through artificial infestations over a period of four years, 663 observations were made on 179 heifers. The breed was classified as highly resistant to tick infestation (99.3%), making it a desirable genetic alternative for cattle breeding in endemic regions.
TICKS AND TICK-BORNE DISEASES
(2023)
Article
Entomology
Jose L. Bravo-Ramos, Maria G. Sanchez-Otero, Sokani Sanchez-Montes, Gerardo G. Ballados-Gonzalez, Jannete Gamboa-Prieto, Dora Romero-Salas, Sashenka Bonilla-Rojas, Luz T. Espin-Iturbe
Summary: EHRA seed extract has been shown to have acaricidal activity against R. microplus and can inhibit acetylcholinesterase activity in the ticks. The chemical composition of EHRA includes various compounds.
EXPERIMENTAL AND APPLIED ACAROLOGY
(2023)