Population parametcrs of Triatoma spinowi Porl er WCI"C studicd using specimens collected in the north and central region of Chile. Two cohorts of 17 and 44 first instars were maintained at a constant temperature of 28ºC and 70% RH. Two similar cohorts of bugs were exposed lo 16-24°C and 55-75% RH and maintained under a photoperiod of 14:10 (L:D) h for 16 mo. The preimaginal period ranged between 285 and 372 d undeer constant conditions...

