Authored by Moustafa
MS Bakry
The present work
was carried out to study the effect of some climatic factors on the population
density of the white mango scale insect, Aulacaspis Tubercularis on mango trees
during three time series (2011-2040, 2041-2070 and 2071-2100) under four
Representative Concentration Pathway (RCP) scenarios (2.6, 4.5, 6.0 and 8.5) as
compared with the current population of the pest (average of population density
for two years of 2017 and 2018) at Esna district, Luxor Governorate, Egypt.
Monthly estimations of total A. tubercularis population indicated the presence
of four peaks of insect abundance per year. The means of solar radiation were
entirely above the optimum range for activities of nymphs, adult females and
total population of A. tubercularis and solar radiation was the most effective
variables in population changes by 39.31, 39.38 and 43.50% for nymphs, adult
females and total population of A. tubercularis during the base year data,
respectively. The percentages of explained variance (E.V.%) indicated that the
combined effect of these climatic factors viz., maximum temperature, minimum
temperature and solar radiation were responsible for 82.37, 77.14 and 85.59 %
of the population changes of nymphs, adult females and total population of this
scale insect, respectively.
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