Biodiversity of Insects in a Maize Agroecosystem under Commercial Production Conditions with Spodoptera frugiperda Mating Disruption Pheromones at Sinaloa
G. A. López-Urquídez, Miguel Serrano, Thomas Clark, Rogelio Armenta-Chavez, R. Medina-López, Lorena Molina-Cárdenas, C. López-Orona
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引用次数: 0
Abstract
Abstract. The objective of the research was to determine biodiversity of insects in a maize agroecosystem under commercial production with fall armyworm mating disruption pheromones at Sinaloa, Mexico. Three plots were established in the State of Sinaloa, Mexico, in the most representative maize commercial regions of the state, during the 2019-2020 fall-winter planting cycle. Abundance and frequency of insects, species similarity between treatments, biodiversity of insects, and niche breadth were evaluated. Species richness was greater in pheromone treatment compared to non-pheromone treatment in all the phenological stages. For equitability, the values were higher in the treatment with pheromone in all the phenological stages of the crop, where the greatest values were in the V8 stage (6.67 for the pheromone treatment and 6.16 for non-pheromone treatment). The greatest diversity was with the pheromone treatment in all phenological stages of the crop, with an average 2.91 for the pheromone treatment and 2.77 for the non-pheromone treatment. Of beneficial insects that attack fall armyworm, species with the greatest niche width varied between treatments, although there were species with values between 0.3 and 0.5. This is important for biological control of fall armyworm. The tachinid parasitoid group had the greatest niche breadth that might be interesting for biological control by conservation to focus on these parasitoids. Resumen. El objetivo de la investigación fue determinar la biodiversidad de insectos en un agroecosistema de maíz bajo producción comercial con feromonas de confusión sexual a gusano cogollero en Sinaloa, México. Se establecieron tres parcelas en el estado de Sinaloa, México, en las regiones comerciales de maíz más representativas del estado, durante el ciclo de siembra otoño-invierno 2019-2020. Se evaluaron la abundancia y frecuencia de insectos, la similitud de especies entre tratamientos, la biodiversidad de insectos y la amplitud de nicho. La riqueza de especies fue mayor en el tratamiento con feromonas en comparación con el tratamiento sin feromonas en todos los estados fenológicos. En cuento a la equitabilidad, los valores fueron mayores en el tratamiento con feromonas en todos los estados fenológicos del cultivo, donde los mayores valores se presentaron en la etapa V8 (6.67 para el tratamiento con feromonas y 6.16 para el tratamiento sin feromonas). La mayor diversidad se presentó con el tratamiento con feromonas en todos los estados fenológicos del cultivo, con un promedio de 2.91 para el tratamiento con feromonas y 2.77 para el tratamiento sin feromonas. De los insectos benéficos que atacan al gusano cogollero, las especies con mayor valor de amplitud de nicho variaron entre tratamientos, aunque hubo especies con valores entre 0.3 y 0.5. Esto es importante para el control biológico del gusano cogollero. El grupo de parasitoides de taquínidos tuvo la mayor amplitud de nicho que puede ser interesante para el control biológico mediante conservación mediante el uso de estos parasitoides.
期刊介绍:
Manuscripts submitted for consideration for publication in the Southwestern Entomologist should report results of entomological research in the southwestern United States or Mexico or should report results of studies on entomological species, relevant to this region, which may be done elsewhere, provided such results are geographically applicable. Manuscripts that report results of routine laboratory or field experiments for which the primary purpose is gathering baseline data or those that report results of a continuous evaluation program such as preliminary pesticide evaluation experiments, species lists with no supporting biological data, or preliminary plant resistance evaluations are not acceptable. However, reports of experiments with insecticides, acaricides, and microbials are acceptable if they are comprehensive and include data related to economics, resistance, toxicology, or other broad subject areas. Bibliographies will not be published in Southwestern Entomologist.