Abstract

URIAS-LOPEZ, M. A.; OSUNA-GARCIA, J. A.; VAZQUEZ-VALDIVIA, V.  and  PEREZ-BARRAZA, M. H. Population dynamics and distribution of the white mango scale (Aulacaspis tubercularis Newstead) in Nayarit, Mexico. Rev. Chapingo Ser.Hortic [online]. 2010, vol.16, n.2, pp.77-82. ISSN 2007-4034.

Studies were conducted from 2003 to 2005 in Las Varas, Nayarit, Mexico, under field conditions with three mango cultivars. The objectives were a) to generate information about population dynamics and b) to determine the distribution of the white mango scale in mango trees. The species was identified as Aulacaspis tubercularis Newstead (Hemiptera: Diaspididae). The developmental pattern showed three different stages: a low density period from the end of the rainy season (September) to December, a second stage of gradual population growth from March to the beginning of the rainy season (July), and the last stage of drastic fall in population during the rainy season (July-August). White mango scale on leaves was more profuse in 'Tommy Atkins' and in 'Ataulfo' than in 'Haden'. On fruits, scale population was higher on 'Tommy Atkins' than on 'Ataulfo'. Density of A. tubercularis was more abundant on the south side than on the west side of the trees. Population of the pest was also higher on the next to last vegetative flush (inner shoot) than on the last one, and average of scales was also higher on the upper surface than on the underside of the leaves.

Keywords : Mangifera indica; Aulacaspis tubercularis; plague; Tommy Atkins; Ataulfo.

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