Infestation Level of Mango Varieties with Fruit Flies at Ismalia Governorate, Egypt

The
infestation level with the peach fruit fly
(PFF), Bacterocera zonata and the Mediterranean fruit fly (MFF), Ceratitis capitata on different mango
varieties (early mature “Hendy & Founs”, moderate mature “Zebdia & Awyesy” and late mature varieties “Fagrklan & Kent")
were studied at Abosoyr district, Ismailia
governorate, during two successive seasons (2014 and 2015). Results indicated that
the percent of infestation
with B. zonata in early mango varieties “Hendy & Founs” and moderate mango varieties “Zebdia & Awyesy” was high, while it was low in late mango varieties “Fagrklan & Kent” during the two successive seasons. Total numbers of natural fallen fruits in early
mango varieties “Hendy & Founs” were more than the other varieties (moderate and late mature varieties) during the two
successive seasons (2014 & 2015).  Also, the average numbers of infested fallen fruits in early
mango varieties “Hendy & Founs” were more than that of the other varieties (moderate and late mature varieties) during the two
successive seasons (2014 & 2015). The percentage of  infestation descendingly
arranged according to
different reasons such as susceptibility of variety to infestation as follows: early mature, moderate mature and late mature varieties during the two successive
seasons, respectively. The percentages of infestation with B. zonata were (95.8 & 93.0), (90.3
& 88.1) and (85.6 &76%).While, thatrecorded
byC. capitata were (4.2 & 7.0), (9.7 & 11.9) and (14.4
& 23.2%) for the
three tested varieties (early, moderate
and late varieties) during the two successive seasons, respectively. Statistical analysis showed significant and high significant differences between the percentages of infestation by B. zonata and C. capitata of the three tested varieties (early, moderate and late varieties) during the two successive
seasons. The weather factors (max. and min. temperatures as well as relative
humidity) affected % infestation of fallen fruits of mango trees
with B. zonata and C.
capitata during the two successive seasons (2014 & 2015). During first season,
fruit infestation was positively significant with min. temp. and relative humidity for early and moderate varieties. While, during the second season, infestation
of early varieties was positively significant for max. temp. But, it was significantly
negative for relative humidity.  Infestation of moderate mango variety positively and significantly correlated with max. temp.
Therefore, the late mango varieties were insignificantly affected with weather
factors during the two successive seasons.