Effects of fluazuron (2.5 mg/kg) and a combination of fluazuron (3.0 mg/kg) + abamectin (0.5 mg/kg) on the reproductive parameters of a field population of Rhipicephalus (Boophilus) microplus on experimentally infested cattle.
The current study assessed the deleterious effects of two formulations of fluazuron (2.5 mg/kg fluazuron and a combination of 3.0 mg/kg fluazuron + 0.5 mg/kg abamectin) on the reproductive parameters of engorged Rhipicephalus (Boophilus) microplus females that naturally detached from experimentally infested cattle in two experiments. Based on the obtained results, it can be concluded that fluazuron (2.5 mg/kg) showed deleterious effects only on the hatchability percentage in the period of 2-7 post-treatment days of this ectoparasite's engorged females. On the other hand, the fluazuron (3.0 mg/kg) + abamectin (0.5 mg/kg) combination presented harmful effects over reproductive parameters of this tick species. Further studies should be performed with a known tick population (reference susceptible strain) to determine the effect of these formulations on the reproductive parameters and to elucidate if this field population is fluazuron resistant.
CPPAR, Animal Health Research Center, Faculdade de Ciências Agrárias e Veterinárias, UNESP, Via de acesso prof. Paulo Donatto Castellani, s/n CEP:14884-900 Jaboticabal, São Paulo, Brasil.
Breno Cayeiro
BC
Cruz
CPPAR, Animal Health Research Center, Faculdade de Ciências Agrárias e Veterinárias, UNESP, Via de acesso prof. Paulo Donatto Castellani, s/n CEP:14884-900 Jaboticabal, São Paulo, Brasil.
Weslen Fabricio Pires
WF
Teixeira
CPPAR, Animal Health Research Center, Faculdade de Ciências Agrárias e Veterinárias, UNESP, Via de acesso prof. Paulo Donatto Castellani, s/n CEP:14884-900 Jaboticabal, São Paulo, Brasil.
Willian Giquelin
WG
Maciel
CPPAR, Animal Health Research Center, Faculdade de Ciências Agrárias e Veterinárias, UNESP, Via de acesso prof. Paulo Donatto Castellani, s/n CEP:14884-900 Jaboticabal, São Paulo, Brasil.
Gustavo
G
Felippelli
CPPAR, Animal Health Research Center, Faculdade de Ciências Agrárias e Veterinárias, UNESP, Via de acesso prof. Paulo Donatto Castellani, s/n CEP:14884-900 Jaboticabal, São Paulo, Brasil.
Flávia Carolina
FC
Fávero
CPPAR, Animal Health Research Center, Faculdade de Ciências Agrárias e Veterinárias, UNESP, Via de acesso prof. Paulo Donatto Castellani, s/n CEP:14884-900 Jaboticabal, São Paulo, Brasil.
André Cayeiro
AC
Cruz
CPPAR, Animal Health Research Center, Faculdade de Ciências Agrárias e Veterinárias, UNESP, Via de acesso prof. Paulo Donatto Castellani, s/n CEP:14884-900 Jaboticabal, São Paulo, Brasil.
Carolina
C
Buzzulini
CPPAR, Animal Health Research Center, Faculdade de Ciências Agrárias e Veterinárias, UNESP, Via de acesso prof. Paulo Donatto Castellani, s/n CEP:14884-900 Jaboticabal, São Paulo, Brasil.
Vando Edésio
VE
Soares
CPPAR, Animal Health Research Center, Faculdade de Ciências Agrárias e Veterinárias, UNESP, Via de acesso prof. Paulo Donatto Castellani, s/n CEP:14884-900 Jaboticabal, São Paulo, Brasil.
Lucas Vinicius Costa
LV
Gomes
CPPAR, Animal Health Research Center, Faculdade de Ciências Agrárias e Veterinárias, UNESP, Via de acesso prof. Paulo Donatto Castellani, s/n CEP:14884-900 Jaboticabal, São Paulo, Brasil. Electronic address: wdzlopes@hotmail.com.
Welber Daniel Zanetti
WD
Lopes
CPPAR, Animal Health Research Center, Faculdade de Ciências Agrárias e Veterinárias, UNESP, Via de acesso prof. Paulo Donatto Castellani, s/n CEP:14884-900 Jaboticabal, São Paulo, Brasil.
Gilson Pereira
GP
de Oliveira
CPPAR, Animal Health Research Center, Faculdade de Ciências Agrárias e Veterinárias, UNESP, Via de acesso prof. Paulo Donatto Castellani, s/n CEP:14884-900 Jaboticabal, São Paulo, Brasil.
Alvimar José
AJ
da Costa
D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000188:drug therapy* / Q000469:parasitology*; D004305:Dose-Response Relationship, Drug; D004359:Drug Therapy, Combination; D005260:Female; D007306:Insecticides / Q000008:administration & dosage*; D007559:Ivermectin / Q000008:administration & dosage / Q000031:analogs & derivatives*; D010671:Phenylurea Compounds / Q000008:administration & dosage*; D012098:Reproduction / Q000187:drug effects; D048494:Rhipicephalus / Q000187:drug effects*; D012876:Skin Diseases, Parasitic / Q000188:drug therapy / Q000662:veterinary*; D013984:Tick Infestations / Q000188:drug therapy / Q000662:veterinary*
D007306:Insecticides; D010671:Phenylurea Compounds; C048324:abamectin; D007559:Ivermectin; C104929:fluazuron
Abamectin; Engorged females; Fluazuron; Reproductive parameters; Rhipicephalus (Boophilus) microplus