Phenology and repproduction of the coffee borer (Hypothenemus hampei Ferrari) during the fruit growth.
DOI:
https://doi.org/10.15517/am.v14i1.11989Abstract
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.
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