In vitro diagnosis of resistance of the cattle tickRhipicephalus(Boophilus)microplusto fipronil in Argentina

被引：14
|
作者：
Torrents, Jorgelina [1 ]
Morel, Nicolas [2 ]
Rossner, Maria V. [3 ]
Martinez, Norberto C. [4 ]
Toffaletti, Jose R. [5 ]
Nava, Santiago [2 ,6 ]
机构：
[1] Univ Nacl Litoral, Fac Ciencias Vet, Kreder 2805, RA-3080 Esperanza, Santa Fe, Argentina
[2] Inst Nacl Tecnol Agr, Estn Expt Agr Rafaela, CC 22, RA-2300 Rafaela, Santa Fe, Argentina
[3] Inst Nacl Tecnol Agr, Estn Expt Agr Colonia Benitez, Colonia Benitez, Chaco, Argentina
[4] Inst Nacl Tecnol Agr, Agencia Extens Rural Garabato, Garabato, Santa Fe, Argentina
[5] Inst Nacl Tecnol Agr, Estn Expt Agr Colorado, El Colorado, Formosa, Argentina
[6] Consejo Nacl Invest Cient & Tecn, Consejo Nacl Invest Cient & Tecn, Buenos Aires, DF, Argentina
来源：
EXPERIMENTAL AND APPLIED ACAROLOGY | 2020年 / 82卷 / 03期
关键词：
Ticks; Resistance; Fipronil; Argentina; Bioassay; RHIPICEPHALUS BOOPHILUS MICROPLUS; ACARI IXODIDAE; DISCRIMINATING CONCENTRATIONS; 1ST REPORT; TESTS;
D O I：
10.1007/s10493-020-00554-7
中图分类号：
Q96 [昆虫学];
学科分类号：
摘要：
The aim of this work was to adapt and apply the in vitro larval bioassay packet test (LPT) to diagnose resistance ofRhipicephalus microplusticks to fipronil in Argentina. Ten serial dilutions of fipronil were included in the LPT bioassay. Seven populations ofR. microplusfrom six Argentinean Provinces were evaluated. Samples from Colonia Benitez, Quimili and Intiyaco were unambiguously classified in the category 'resistant'. In all these cases the 95% confidence intervals did not overlap with that of the susceptible reference strain and the slope values were lower than the slope value obtained for the susceptible reference strain. The resistance ratio (RR50) values of the populations from Colonia Benitez I and II, Quimili and Intiyaco were 2.23, 3.49, 6.84 and 3.39, respectively. Populations from El Colorado I and II, Acambuco, Vera and Feliciano were classified as 'susceptible' because the 95% confidence intervals overlapped with that of the susceptible reference strain and the RR(50)values never exceeded 1.32. The results of these LPT bioassays indicate the presence of fipronil resistantR. micropluspopulations in Argentina.
引用
收藏
页码：397 / 403
页数：7
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