Results 11 to 20 of about 1,915 (184)

Acaricide resistance mechanisms in Rhipicephalus (Boophilus) microplus [PDF]

Revista Brasileira de Parasitologia Veterinária, 2012
Acaricide resistance has become widespread in countries where cattle ticks, Rhipicephalus (Boophilus) microplus, are a problem. Resistance arises through genetic changes in a cattle tick population that causes modifications to the target site, increased metabolism or sequestration of the acaricide, or reduced ability of the acaricide to penetrate ...
Guerrero, Felix David, Lovis, Léonore, Martins, João Ricardo   +2 more
openaire   +4 more sources

Movement ecology of exotic nilgai antelope: A threat to the re‐emergence of cattle fever ticks in the southern USA

Ecosphere, Volume 14, Issue 2, February 2023., 2023
Abstract Wildlife plays an important role in the emergence of livestock diseases, and their movements can complicate disease management efforts. One of the most significant vector‐borne diseases of livestock worldwide is bovine babesiosis, spread by cattle fever ticks (CFTs; Rhipicephalus [=Boophilus] microplus and Rhipicephalus [=Boophilus] annulatus).
Kathryn M. Sliwa, Jeremy A. Baumgardt, Randy W. DeYoung, J. Alfonso Ortega‐S, David G. Hewitt, John A. Goolsby, Kimberly H. Lohmeyer   +6 more
wiley   +1 more source

In vitro screening and in vivo evaluation of antiparasitic phytochemicals against Cryptocaryon irritans in pompano, Trachinotus ovatus

Journal of the World Aquaculture Society, Volume 53, Issue 6, Page 1084-1100, December 2022., 2022
Abstract Cryptocaryon irritans, one of the most devastating holotrichous ciliated protozoans, causes massive economic losses in the pompano, Trachinotus ovatus, mariculture industries. Considering the many advantages of phytochemicals, such as low cost, low residuals, and low pollution, they can be a good alternative for the prevention and control of C.
Wei‐Wei Mao, Zi‐Chen Zhao, Gui‐Hua Li, Wei‐Liang Guo, Ze‐Hao Ding, Shi‐Feng Wang, Yun Sun, Zhen‐Jie Cao, Jian‐Long Li, Yong‐Can Zhou   +9 more
wiley   +1 more source

Tripanosomatídeos similares a Trypanosoma theileri no carrapato dos bovinos Boophilus microplus Tripanosomatides like Trypanosoma theileri in the cattle tick Boophilus microplus

Revista Brasileira de Parasitologia Veterinária, 2008
Descreve-se a ocorrência de formas epimastigotas de um tripanosomatideo na hemolinfa do carrapato do bovino Boophilus microplus no Estado do Rio Grande do Sul.
João Ricardo Martins, Romário C. Leite, Rovaina L. Doyle   +2 more
doaj   +1 more source

Parasitismo em ser humano por B. microplus (Acari: Ixodidae) em Santa Maria, RS, Brasil Human parasitism by B. microplus (Acari: Ixodidae), Santa Maria, RS, Brazil

Ciência Rural, 2007
Este trabalho tem como objetivo relatar um caso de parasitismo em ser humano por Boophilus microplus, ocorrido no bairro Alto da Boa Vista, na cidade de Santa Maria, Rio Grande do Sul. Os bovinos, cães e eqüinos apresentavam uma alta carga parasitária. O
João Fábio Soares, Luís Antônio Sangioni, Fernanda Silveira Flores Vogel, Carlos Flávio Barbosa da Silva   +3 more
doaj   +1 more source

Cholesterol in the Cuticular Wax of Boophilus microplus [PDF]

Nature, 1969
TRACES of substances giving colour reactions typical of sterols have been found in the cuticle and cuticular wax of several arthropods1–6, but they have not been reported from ticks7,8. I have now shown that both free and esterified cholesterol occur in the wax of Boophilus microplus, and I have measured the quantity of each present.
openaire   +2 more sources

Identificación de un polimorfismo del gen Est9 relacionado con resistencia a piretroides en Rhipicephalus (Boophilus) microplus [PDF]

Revista Mvz Cordoba, 2013
RESUMEN Objetivo. Mediante procedimientos de PCR-RFLP, detectar un polimorfismo en el gen Est9 de garrapatas Rhipicephalus (Boophilus) microplus resistentes a piretroides en Ibagué, Colombia, determinando el grado de asociación entre los fenotipos y los
Edgar Diaz R, Gustavo Vallejo
doaj   +2 more sources

Eficácia do extrato aquoso de Azadiracta indica no controle de Boophilus microplus em bovino Effectiveness of Azadiracta indica watery extract on the control of bovine ticks Boophilus microplus

Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2007
This study was carried out with two groups of bovines naturally infected with Boophilus microplus. One group was treated every week during a month with Neem's watery extract and the other group was treated only once (at the test onset) with amabectin ...
M. Valente, A. Barranco, A. B. Sellaive-Villaroel   +2 more
doaj   +1 more source

Ocorrência de Borrelia spp. em cultura de células embrionárias do carrapato Boophilus microplus (Acari: Ixodidae) no Estado do Mato Grosso do Sul, Brasil Occurrence of Borrelia spp. in culture of embryonic cells of the tick Boophilus microplus (Acari: Ixodidae) in the State of the Mato Grosso do Sul, Brazil

Revista Brasileira de Parasitologia Veterinária, 2008
O presente trabalho teve como objetivo reportar a ocorrência de Borrelia spp. em culturas de células embrionárias de Boophilus microplus infectados naturalmente. Sete dias após o início de uma nova cultura primária de células embrionárias do carrapato B.
Jania de Rezende, Raul H. Kessler, Cleber O. Soares, Odair P. Martins   +3 more
doaj   +1 more source

Metabolism of [14C]Amitraz in Larvae of Boophilus Microplus [PDF]

Australian Journal of Biological Sciences, 1978
Amitraz, 1 ,5-di(2,4-dimethylphenyl)-3-methyl-1 ,3,5-triazapenta-1 ,4-diene, labelled with 14C in the 2-methyl groups was applied to B. micro plus larvae by an immersion technique. The chemical penetrated readily but never appeared in large amounts internally due to rapid cleavage to N-2,4- dimethylphenyl-N'-methylformamidine.
C A, Schuntner, P G, Thompson
openaire   +2 more sources