RecR displayed a low level of cross resistance only to pyriproxyfen,
a chemical that has not been utilized for A. aegypti control
in Brazil. However, the resistance level to this juvenile hormone
analogue was much lower than that to temephos resistance,
which differs from what was found by Andrighetti et al. (2008),
whom found concomitant resistance to both insecticides in natural
mosquito populations from Brazil. Braga et al. (2005) also reported
low resistance (RR < 3) to metophrene, another juvenile hormone
analogue, in wild Brazilian A. aegypti, and did not show any relation
between the resistance level to temephos and that to methoprene.