Capacidad de parasitismo de dos linajes Trichogramma atopovirilia Oatman y Platner para control de Spodoptera frugiperda
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Date
2022
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Universidad Nacional de Trujillo
Abstract
El objetivo de este trabajo fue determinar la capacidad de parasitismo de dos linajes de Trichogramma atopovirilia Oatman y Platner para el control de Spodoptera frugiperda. Para esta investigación se utilizó un linaje de Trichogramma atopovirilia obtenido del hospedero Anagasta kuehniella y un linaje obtenido de Spodoptera frugiperda como hospedero. Se evaluó el porcentaje de parasitismo, viabilidad de los huevos parasitados, número promedio de parasitoides obtenidos por huevo y ratio sexual. Los linajes Trichogramma atopovirilia evaluados mostraron capacidad para parasitar indistintamente huevos de Spodoptera frugiperda y de Anagastha kuehniella. El linaje de T. atopovirilia que tuvo como hospedero alternativo huevos de Anagastha kuehniella utilizado en el tratamiento T1 obtuvo el mayor porcentaje de parasitismo y el mayor número de adultos del parasitoide emergidos; Asimismo, el tratamiento T3 que correspondio a este linaje presento el mayor porcentaje de huevos parasitados viables. Todos los tratamientos tuvieron una progenie en la que predominó en mayor proporción el número de hembras.
ABSTRACT The objective of this work was to determine the parasitism capacity of two lineages of Trichogramma atopovirilia Oatman and Platner for the control of Spodoptera frugiperda. For this research, a lineage of Trichogramma atopovirilia obtained from the host Anagasta kuehniella and a lineage obtained from Spodoptera frugiperda as host were used. The percentage of parasitism, viability of parasitized eggs, average number of parasitoids obtained per egg and sexual ratio were evaluated. The Trichogramma atopovirilia lineages evaluated showed the ability to indistinctly parasitize Spodoptera frugiperda and Anagastha kuehniella eggs. The lineage of T. atopovirilia that had as an alternative host eggs of Anagastha kuehniella used in the T1 treatment obtained the highest percentage of parasitism and the highest number of adults of the parasitoid emerged; Likewise, the T3 treatment that corresponded to this lineage presented the highest percentage of viable parasitized eggs. All treatments had a progeny in which the number of females predominated in greater proportion.
ABSTRACT The objective of this work was to determine the parasitism capacity of two lineages of Trichogramma atopovirilia Oatman and Platner for the control of Spodoptera frugiperda. For this research, a lineage of Trichogramma atopovirilia obtained from the host Anagasta kuehniella and a lineage obtained from Spodoptera frugiperda as host were used. The percentage of parasitism, viability of parasitized eggs, average number of parasitoids obtained per egg and sexual ratio were evaluated. The Trichogramma atopovirilia lineages evaluated showed the ability to indistinctly parasitize Spodoptera frugiperda and Anagastha kuehniella eggs. The lineage of T. atopovirilia that had as an alternative host eggs of Anagastha kuehniella used in the T1 treatment obtained the highest percentage of parasitism and the highest number of adults of the parasitoid emerged; Likewise, the T3 treatment that corresponded to this lineage presented the highest percentage of viable parasitized eggs. All treatments had a progeny in which the number of females predominated in greater proportion.
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Keywords
Control biológico, Viabilidad, Ratio sexual, Linaje, Plaga