Publications

cypermethrin pour-on synergized with piperonyl butoxide: effects on haematobia irritans (diptera: muscidae) natural populations resistant to cypermethrin.	development of pyrethroid resistance in haematobia irritans in santa fe province, argentina, resulted in an increased use of pyrethroid insecticides, probably due to lack of suitable alternative treatments. we explored the efficacy of mixtures of cypermethrin and piperonyl butoxide (pbo) against pyrethroid-resistant h. irritans. groups of 25 holstein cows each, naturally infested with cypermethrin resistant h. irritans were assigned to treated or control groups in april, september, october and d ...	1999	10392769
long-term study of haematobia irritans (diptera: muscidae) seasonal distribution in central argentina with focus on winter fly abundance.	the seasonal distribution of haematobia irritans (linnaeus, 1758) was evaluated at 31 degrees 12' s-61 degrees 29' w, santa fe, argentina from november 1992 to august 2000 by weekly fly counts on 20 holstein cows not treated against ectoparasites. the analysis was mainly focused on winter fly abundance. two peaks of abundance were found from spring to autumn. adults of h. irritans were consistently found on cattle during winter, with increasing numbers from the end of july to late august. the on ...	2001	11802276