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Copyright of Investigación y Ciencia de la Universidad Autónoma de Aguascalientes is the property of Universidad Autonoma de Aguascalientes, Direccion General de Investigacion y Posgrado and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Acta Agrícola & Pecuaria is the property of Universidad Autonoma del Estado de Morelos and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Oligonychus perseae Hirst (Acari: Tetranychidae) is a major pest of avocado (Persea americana Mill.) crops, but it also causes damage to other crops and ornamental plants. Classifying and evaluating the type of spatial distribution pattern of mites on their host plants under natural conditions is ecologically and biologically important. Furthermore, to develop strategies to control the populations of pest mites in agroecosystems, it is essential to know the type of spatial pattern of distribution (uniform, random, or aggregate) of that mite on its host plant and its habitat. This study aimed to classify and assess the spatial distribution of O. perseae on A. saligna. The indices of Lloyd's mean crowding indices, Morisita, and mean-variance relationship classified the spatial pattern of dispersion of the persea mites as aggregate. Iwao's mean crowding regression and Taylor's power law confirmed these results, which indicated that O. perseae formed aggregate colonies to reproduce, avoid predators, and socialize. This is also the first report of O. perseae on A. saligna in Baja California and may help us developing sampling programs for O. perseae. Resumen Oligonychus perseae Hirst (Acari: Tetranychidae) es una plaga importante del aguacate (Persea americana Mill.), pero también causa daños a otros cultivos y plantas ornamentales. Clasificar y evaluar el tipo de patrón de distribución espacial de los ácaros en sus plantas hospederas bajo condiciones naturales es importante para desarrollar estrategias de control de sus poblaciones. La distribución espacial de O. perseae sobre A. saligna se midió con los índices de hacinamiento medio de Lloyd, Morisita y la relación mediavarianza clasificaron el patrón de dispersión espacial de los ácaros persea como agregado. La regresión de hacinamiento medio de Iwao y la ley de potencia de Taylor confirmaron estos resultados, indicando que O. perseae formó colonias agregadas para reproducirse, evitar depredadores y socializar. Este es también el primer reporte de O. perseae sobre A. saligna en Baja California, y nos puede sirvir para desarrollar programas de muestro para O. perseae. [ABSTRACT FROM AUTHOR]