Interaction of environmental factors and natural enemies with populations of Aulacaspis tubercularis Newstead in Nayarit, Mexico
DOI:
https://doi.org/10.29312/remexca.v10i4.1708Keywords:
Aulacaspis tubercularis, Ataulfo cultivar, white mango scaleAbstract
The objective of this study was to know the population dynamics of the white mango scale, Aulacaspis tubercularis Newstead at different temperatures and determine the relationships between climate factors and natural enemies with the populations of the scale. The study was conducted in 2013-2014 on seven mango thefts (Manguifera indica L.) of the Ataulfo cultivar, located in places with different temperatures in San Blas, Nayarit. In each orchard, populations of white scales and their insect predators were recorded every two weeks. Variance analyzes were carried out to compare the populations between sampling dates and localities; correlations were also obtained between temperature, rainfall and the complex of predators with the populations of the pest. The highest population levels of the white scale of mango were recorded during the period with higher temperatures and without rainfall (April-June); in contrast, during the period with rainfall, the population in all orchards was scarce or nonexistent. A positive correlation of the temperature was determined with the population of the white scale of the mango, in such a way that the increase of the temperature during the year favored the increase of the populations of the pest. In contrast, rainfall negatively impacted the pest by drastically reducing the density of its populations. Finally, the increase of the populations of the scale favored the increase of the population density of the complex of predators of the plague.
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