Abstract
During the last five years, Bactericera cockerelli Sulc. has caused significant economic losses in potato production in Mexico, due to the purple top and zebra chip diseases, since it acts as the vector of Candidatus Liberibacter psyllaurous. Despite its importance as a vector of serious potato diseases, the knowledge of its spatial distribution behavior, which could improve the efficiency of control measures, is entirely lacking. The main objective of this work was to compare the spatial distribution of the immature and adult stages of B. cockerelli obtained in a potato field by means of transect and quadrant sampling techniques and of geostatistics tools that allow the visualization of its spatial distribution in the field. Transect and quadrant samplings showed that the immature stages (eggs and nymphs) of B. cockerelli present a clustered distribution. The validation of the achieved semivariograms in the three dates of sampling corroborated the aggregated distribution of immatures and adults of the insect. The maps obtained in the sampling by using the quadrant or the transect approaches reflect the aggregated structure of the insect populations which did not infest 100% of the plot area. This allowed us to identify infested and free areas, what will aid in decisions for selecting alternatives of control.
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Edited by Wesley AC Godoy – ESALQ/USP
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Ramírez-Davila, J.F., Porcayo-Camargo, E., Sánchez-Pale, J. et al. Spatial Behavior Comparison of Bactericera cockerelli Sulc. (Hemiptera: Triozidae) in Mexico. Neotrop Entomol 41, 9–16 (2012). https://doi.org/10.1007/s13744-012-0019-y
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DOI: https://doi.org/10.1007/s13744-012-0019-y