@article{fdi:010063716,
  title = {{S}usceptibility to deltamethrin of wild and domestic populations of {T}riatoma infestans of the {G}ran {C}haco and the {I}nter-{A}ndean {V}alleys of {B}olivia},
  author = {{G}omez, {M}. {B}. and {D}'{A}vila, {G}. {C}. {P}. and {O}rellana, {A}. {L}. {G}. and {C}ortez, {M}. {R}. and {R}osa, {A}. {C}. {L}. and {N}oireau, {F}ran{\c{c}}ois and {D}iotaiuti, {L}. {G}.},
  editor = {},
  language = {{ENG}},
  abstract = {{B}ackground: {T}he persistence of {T}riatoma infestans and the continuous transmission of {T}rypanosoma cruzi in the {I}nter-{A}ndean {V}alleys and in the {G}ran {C}haco of {B}olivia are of great significance. {C}oincidentally, it is in these regions the reach of the vector control strategies is limited, and reports of {T}. infestans resistance to insecticides, including in wild populations, have been issued. {T}his study aims to characterize the susceptibility to deltamethrin of wild and domestic populations of {T}. infestans from {B}olivia, in order to better understand the extent of this relevant problem. {M}ethods: {S}usceptibility to deltamethrin was assessed in nine, wild and domestic, populations of {T}. infestans from the {G}ran {C}haco and the {I}nter-{A}ndean {V}alleys of {B}olivia. {S}erial dilutions of deltamethrin in acetone (0.2 mu {L}) were topically applied in first instar nymphs ({F}1, five days old, fasting, weight 1.2 +/- 0.2 mg). {D}ose response results were analyzed with {PROBIT} version 2, determining the lethal doses, slope and resistance ratios ({RR}). {Q}ualitative tests were also performed. {R}esults: {T}hree wild {T}. infestans dark morph samples of {C}haco from the {S}anta {C}ruz {D}epartment were susceptible to deltamethrin with {RR}50 of < 2, and 100% mortality to the diagnostic dose ({DD}); however, two domestic populations from the same region were less susceptible than the susceptibility reference lineage ({RR}50 of 4.21 and 5.04 respectively and 93% {DD}). {T}he domestic population of {V}illa {M}ontes from the {C}haco of the {T}arija {D}epartment presented high levels of resistance ({RR}50 of 129.12 and 0% {DD}). {M}oreover, the domestic populations from the {V}alleys of the {C}ochabamba {D}epartment presented resistance ({RR}50 of 8.49 and 62% {DD}), the wild populations were less susceptible than {SRL} and {T}. infestans dark morph populations ({RR}50 < 5). {C}onclusion: {T}he elimination of {T}. infestans with pyrethroid insecticides in {B}razil, {U}ruguay, {C}hile, and its drastic reduction in large parts of {P}araguay and {A}rgentina, clearly indicates that pyrethroid resistance was very uncommon in non-{A}ndean regions. {T}he pyrethroid susceptibility of non-{A}ndean {T}. infestans dark morph population, and the resistance towards it, of {A}ndean {T}. infestans wild and domestic populations, indicates that the {A}ndean populations from {B}olivia are less susceptible.},
  keywords = {{T}riatoma infestans ; {C}ontrol ; {B}olivia ; {I}nsecticide resistance ; {D}eltamethrin ; {BOLIVIE} ; {ANDES}},
  booktitle = {},
  journal = {{P}arasites and {V}ectors},
  volume = {7},
  numero = {},
  pages = {art. 497 [7 ]},
  ISSN = {1756-3305},
  year = {2014},
  DOI = {10.1186/s13071-014-0497-3},
  URL = {https://www.documentation.ird.fr/hor/fdi:010063716},
}