Results 31 to 40 of about 1,391 (177)

Análise in vitro da eficácia do amitraz sobre populações de Rhipicephalus (Boophilus) microplus (Canestrini, 1887) da região sul do Rio Grande do Sul In vitro analysis of amitraz efficacy against Rhipicephalus (Boophilus) microplus (Canestrini, 1887) populations of southern region of Rio Grande do Sul state

Revista Brasileira de Parasitologia Veterinária, 2009
Formulações comerciais à base de amitraz são muito utilizadas como acaricidas na Região Sul do Rio Grande do Sul, contudo sem maiores estudos da sua eficácia nessa região. O presente estudo objetivou estimar a frequência de populações de R.
Tânia Regina Bettin dos Santos, Felipe Geraldes Pappen, Nara Amélia da Rosa Farias, Itabajara da Silva Vaz Junior   +3 more
doaj   +1 more source

Comparison of behavioral and clinical effects of intravenous amitraz or romifidine administration in horses Comparação de efeitos comportamentais e clínicos da administração intravenosa de amitraz ou romifidina em eqüinos

Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2007
Clinical and behavioral effects of intravenous injection of romifidine (60mcg/kg) or amitraz (0.4mg/kg) were compared in six horses, over 120 min. Romifidine caused head ptosis (HP), reduced respiratory rate (RR) and ileo-cecal sphincter activity (IC ...
M.C. Mendes, R.G. Reis, C.A.A. Valadão, J.A. Marques   +3 more
doaj   +1 more source

Effect of Propylparaben on In Vitro Maturation of Porcine Oocytes and Embryo Development

Environmental Toxicology, EarlyView.
ABSTRACT Parabens are synthetic chemicals that, due to their antibacterial and fungicidal effects, are widely used as preservatives in food, cosmetics, and personal care products, such as shampoos, hair conditioners, body creams, soaps, deodorants, makeup, wet wipes, lotions, female hygiene products, and vaginal lubricants. Several years ago, they were
Elivier Núñez‐Macías, Fahiel Casillas, Yenny Ramírez‐Jara, Eduardo Casas, Alma López, Adyeni Barajas‐Salinas, Jaime Barraza, Brenda Casado, Ivan Bahena‐Ocampo, Lizbeth Juárez‐Rojas, Miguel Betancourt   +10 more
wiley   +1 more source

Molecular Characterization of Octopamine/Tyramine Receptor Gene of Amitraz-Resistant Rhipicephalus (Boophilus) decoloratus Ticks from Uganda

Microorganisms, 2022
We previously reported the emergence of amitraz-resistant Rhipicephalus (Boophilus) decoloratus ticks in the western region of Uganda. This study characterized the octopamine/tyramine receptor gene (OCT/Tyr) of amitraz-resistant and -susceptible R.
Patrick Vudriko, Rika Umemiya-Shirafuji, Dickson Stuart Tayebwa, Joseph Byaruhanga, Benedicto Byamukama, Maria Tumwebaze, Xuenan Xuan, Hiroshi Suzuki   +7 more
doaj   +1 more source

Impact of Methylparaben on Cumulus Cell DNA Integrity and Porcine Oocyte Developmental Competence In Vitro

Journal of Applied Toxicology, Volume 46, Issue 9, Page 2985-2996, September 2026.
ABSTRACT Parabens (PBs) are compounds widely used as preservatives in personal care products, food, and pharmaceuticals. Methylparaben (MePB) is the most used by different industries due to its chemical properties and low cost. The high daily human exposure to these compounds has raised concerns about their potential effects on health, particularly on ...
Yenny Ramírez‐Jara, Brenda Casado, Miguel Betancourt, Adyeni Barajas‐Salinas, Eduardo Casas, Gabriela Hurtado‐Alvarado, Juan José Rodríguez‐Mercado, Alma López, Iván Bahena, Lizbeth Juárez‐Rojas, Leticia González‐Núñez, Fahiel Casillas   +11 more
wiley   +1 more source

Grass species and climatic season impact on Rhipicephalus microplus temporal abundance in a tropical region

Pest Management Science, Volume 82, Issue 9, Page 8950-8962, September 2026.
The interaction between grass species and climatic season shapes the population dynamics of the cattle tick, Rhipicephalus microplus. This information highlights the potential of forage species to influence off‐host tick dynamics. Additionally, minimum temperature and minimum relative humidity were the most influential microclimatic predictors of ...
Valesca Henrique Lima, Cárita de Souza Ribeiro‐Silva, Salorrane Miranda do Nascimento Pinto, Caio Márcio de Oliveira Monteiro, Pricila Vetrano Rizzo, Fernanda Mara Cunha Freitas, Rafael de Andrade Moral, Gabriel Moura Mascarin, Éverton Kort Kamp Fernandes   +8 more
wiley   +1 more source

Behavioral Resistance in Varroa destructor: First Evidence in Response to Acaricide?

Archives of Insect Biochemistry and Physiology, Volume 122, Issue 3, July 2026.
Varroa mites exhibited population‐dependent behavioral responses: two populationw avoided tau‐fluvalinate, and none showed specific behavioral responses to amitraz and oxalic acid, despite contrasting phenotypical resistance profiles. ABSTRACT The ectoparasite Varroa destructor (Mesostigmata: Varroidae) poses a major threat to honey bee colonies due to
Théa Missud, Max Watkins, Paulo Damian Mielgo, Alexandros Papachristoforou, Karine Monceau, Benjamin Poirot   +5 more
wiley   +1 more source

Evaluation of amitraz and derivatives in poisoned cat fur: a new screening method via Headspace/Gas Chromatography-Mass Spectrometry - case report [PDF]

Arquivo Brasileiro de Medicina Veterinária e Zootecnia
Amitraz is a toxic pesticide that causes severe poisoning in animals; however, few reports of poisoning in cats can be found. Current diagnostic techniques mostly use invasive sampling and require a long time.
L.P.T. Prado, J.M.G. Barbosa, M.C. Vicente, A.C.M. Barros, N.M.S. Correia, L.L.P. Silva, B.K. Rodrigues, L.C. David, A.F.M. Botelho, N.R. Antoniosi FILHO   +9 more
doaj   +1 more source

Small molecules as arthropod kinin receptor antagonists, feeding modulators, or novel mosquitocidal agents

Pest Management Science, Volume 82, Issue 7, Page 6842-6863, July 2026.
A two‐pronged screen of small molecules – (1) on recombinant kinin receptor and (2) through topical application – identifies kinin receptor antagonists, feeding behavior modulators, and new mosquitocidal molecules. Abstract BACKGROUND Aedes aegypti and Culex quinquefasciatus mosquitoes are primary vectors for numerous human and animal pathogens and ...
Bianca M. Henriques‐Santos, Patricia V. Pietrantonio   +1 more
wiley   +1 more source

Varroacidal Efficiency of Treatment with Amitraz in Honey Bee Colonies with Brood

Journal of Apicultural Science, 2018
Field trials were conducted to evaluate the effectiveness of amitraz fumigation against Varroa destructor in honey bee colonies with brood. Within this project the following aspects were taken into consideration: strength of colony, the number of ...
Pohorecka Krystyna, Skubida Piotr, Semkiw Piotr   +2 more
doaj   +1 more source