Publications by authors named "M M Ojeda-Chi"
Amblyomma cf. parvum (Ixodida: Ixodidae) is an ectoparasite of domestic animals and wildlife on the American continent. There is little information on the efficacy of acaricides for the control of this tick species in domestic animals.
View Article and Find Full Text PDFArticle Synopsis
- Ticks, particularly from the Ixodes genus, are blood-feeding ectoparasites with at least 245 species, and the Ixodes affinis has a broad distribution from South America to the U.S.
- This study aims to explore the genetic diversity of I. affinis across the Americas, especially in areas where data is sparse, and to clarify its taxonomy, suggesting it may represent a complex of four distinct species.
- The research involved collecting samples from South Carolina and Yucatán, resulting in significant genetic structure findings that support the idea that I. affinis consists of several closely related species.
The southern cattle tick (Rhipicephalus microplus) represents one of the ectoparasites with the greatest distribution worldwide. Infestations by this arthropod can cause a decrease in the production of meat and milk, as well as anaemia and the transmission of bacterial and parasitic agents. For this reason, several active molecules have been developed to control these arthropods.
View Article and Find Full Text PDFArticle Synopsis
- A case study details the clinical symptoms and findings of Lagochilascaris minor, a parasitic worm, in a domestic cat from Veracruz, Mexico.
- The cat exhibited a neck fistula containing 32 nematodes, which were identified as Lagochilascaris spp. based on physical characteristics.
- DNA analysis confirmed the species as L. minor, showing a 100% match with samples from Costa Rica, marking the first report of this parasite in domestic cats in Veracruz and highlighting its presence as a zoonotic threat in the region.
The prevalence, resistance ratios and factor associated with Rhipicephalu microplus populations resistant to amitraz, flumethrin, coumaphos, and ivermectina (IVM) in Mexico were studied. Field tick populations were collected from 54 farms in 15 different states of Mexico. The dose-response bioassays were carried out using the larval immersion test (amitraz and IVM) and the modified larval packet test (flumethrin and coumaphos) against R.
View Article and Find Full Text PDF