Abstract

The study was conducted in La Cumbre, Santiago,

Dominican Republic (2000-2001 crop) to determine the

positioning stage and the number of stages of the coffee bean

borer, during the fruit growth. It consisted of systematic

weekly samplings, starting at 77 days after the primary

blooming (DAPB). It consisted of four replication, 25 fruits

were collected from each replication (five fruits per branch

from five plants). It was observed that from 70 up to 86 % of

the bean borers that migrated, remained in the positioning

stage B (susceptible to the handling tools) before the 112

DAPB. From this date on, a marked decreased was found in

the number of bean borers as the fruit age increased, until it

leveled off at 10 % after the 147 DAPB. On the other hand,

the borers. percentage the positioning stage D (initiating

breeding) increased from 2 to 57 %. The number of eggs and

larvae increased after the 112 DAPB, from 23 eggs and four

larvae up to 286 and 396, respectively, for every 100 coffee

beans, observing at this time the largest damage in the

immature stages of the cotyledons. An increased from nine to

108 pupae was observed for every 100 fruits, after the 119 up

to 189 DAPB.