Lakhasly

The Egyptian fruits are attacked by two of the most harmful tephritid pests, the peach fruit fly, Bactrocera zonata (Saunders), and the Mediterranean fruit fly, Ceratitis capitata (Wiedmann) causing considerable damage.Throughout the two studied seasons, the trapped males of B. zonata were negatively and insignificantly correlated with both of maximum and minimum temperatures, while, the relative humidity % affected positively insignificantly and positively significantly on B. zonata males activity during 2016 and 2017, respectively.On the other side, C. capitata trapped males were significantly and negatively correlated with maximum and minimum temperatures, while, relative humidity reflected a significant positive correlation with the population of the fruit fly.Concerning the 2nd season(2017), the highest mean percentage of fig fruits was recorded during the 1st week of September with a mean of 5.42% occurring by B. zonata females, while, C. capitata infestation on fig fruits was observed firstly during the 2nd week of October and continued until the 2nd week of December coinciding with end of fig fruits harvesting.In Fayoum governorate, fig trees are cultivated in condensed plantations to produce their fruits in two overlapped crops per year from July till December.

The Egyptian fruits are attacked by two of the most harmful
tephritid pests, the peach fruit fly, Bactrocera zonata (Saunders), and the
Mediterranean fruit fly, Ceratitis capitata (Wiedmann) causing
considerable damage. In Fayoum governorate, fig trees are cultivated in
condensed plantations to produce their fruits in two overlapped crops per
year from July till December. This paper was contributed to saving more
information about the occurrence of B. zonata and C. capitata flies in a
fig cultivated areas in Fayoum governorate in relation to the effect of
various weather factors on their activity and estimating the mentioned
fruit flies infestation rates. During the 1st season (2016), the highest
peaks of B. zonata and C. capitata population were observed during the
2
nd week of October and 1st week of November with respective mean
values of captured flies per trap per day (FTD) of 0.48 and 0.74
fly/trap/day. While during the 2nd season (2017), the highest peak of B.
zonata and C. capitata males were observed during the 1st
week of
September and 2
nd week of November with a mean FTD values of 1.31
and 0.62 flies/trap/day, respectively. Concerning infestation rates, during
the 1st season, the highest mean percentage of fruit infestation was
observed during the 1
st week of October with a mean of 4.32% occurring
by B. zonata females indicating by the emerged flies of B. zonata flies
from sampled infested fruits. The fig fruits infestation by B. zonata
females continued until the 1st week of November, while, C. capitata
females started to attack fig fruits during the 4th week of October and
continued until the 3rd week of November. Concerning the 2nd
season(2017), the highest mean percentage of fig fruits was recorded
during the 1st week of September with a mean of 5.42% occurring by B.
zonata females, while, C. capitata infestation on fig fruits was observed
firstly during the 2nd week of October and continued until the 2nd week
of December coinciding with end of fig fruits harvesting. Throughout the
two studied seasons, the trapped males of B. zonata were negatively and
insignificantly correlated with both of maximum and minimum
temperatures, while, the relative humidity % affected positively
insignificantly and positively significantly on B. zonata males activity
during 2016 and 2017, respectively. On the other side, C. capitata
trapped males were significantly and negatively correlated with
maximum and minimum temperatures, while, relative humidity reflected
a significant positive correlation with the population of the fruit fly.