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Volume 2010, Article ID 819532, 4 pages
Research Article

Fruit Damage Patterns Caused by Ovipositing Females of Conotrachelus dimidiatus (Coleoptera: Curculionidae) in Guava Trees

1Centro de Ciencias Basicas, Universidad Autonoma de Aguascalientes, Av. Universidad # 940, 20100 Aguascalientes, Mexico
2Instituto Tecnologico Agropecuario de Aguascalientes, 20330 Agusacalientes, Mexico
3Instituto Nacional de Investigaciones Forestales, Agricolas y Pecuarias, Campo Experimental Pabellon, 20660 Aguascalientes, Mexico
4Area de Biologia, Departamento de Preparatoria Agricola, Universidad Autonoma Chapingo, 56230 Estado de Mexico, Mexico

Received 3 December 2009; Accepted 17 May 2010

Academic Editor: Abraham Hefetz

Copyright © 2010 Felipe Tafoya et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


We evaluated the damage patterns produced by females of the guava weevil Conotrachelus dimidiatus Champion, 1904 (Coleoptera: Curculionidae), according to the position of the damaged fruit in guava trees Psidium guajava L. in Calvillo, Aguascalientes, Mexico. The trees were subdivided in eight zones, and during one year the level of fruit lesions due to oviposition was registered. Results showed a higher level of damage in the upper and external zone of the trees ( 𝑃 . 0 5 ) . We found no significant differences in damage between the four cardinal points ( 𝑃 . 0 5 ) . During the year, the level of damage was recorded and was higher in the months of August and September ( 𝑃 . 0 5 ) associated with rainfall (0.86, 𝑃 = . 0 6 ) and increase in temperature (0.84, 𝑃 = . 0 3 ). The most susceptible fruits were in the size range of 2.1–4.0 cm (polar diameter). The information from this study will be used to design and establish effective control strategies for the guava weevil, taking into account location of the most susceptible fruits, seasonality of the pest, and the abiotic factors.