Capacidad predadora de Cryptolaemus montrouzieri Mulsant (Coleoptera: Coccinellidae) sobre Planococcus ficus Signoret (Hemiptera: Pseudococcidae) en condiciones de laboratorio en Piura
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Authors
Córdova López, Marilú
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Abstract
La presente investigación tuvo como objetivo determinar la capacidad de predación de Cryptolaemus montrouzieri Mulsant (Coleóptera: Coccinellidae) sobre Planococcus ficus Signoret (Hemíptera: Pseudococcidae), bajo condiciones de laboratorio, en el Laboratorio de Control Biológico del Departamento de Sanidad Vegetal de la Facultad de Agronomía de la Universidad Nacional de Piura. El estudio se desarrolló entre los meses de marzo y octubre de 2024, registrándose una temperatura promedio de 21,8 ± 1,2 °C y una humedad relativa media de 57,9 por ciento. Se evaluó la capacidad de predación de los cuatro estadios larvales y del estado adulto de C. montrouzieri sobre huevos, ninfas y adultos de P. ficus, mediante cinco pruebas de predación y cinco repeticiones por prueba. Las evaluaciones se realizaron diariamente en placas Petri, registrándose el número de presas consumidas por cada individuo del depredador. Los datos obtenidos fueron analizados mediante pruebas estadísticas no paramétricas de Kruskal Wallis y comparaciones múltiples de Mann-Whitney, con un nivel de significancia del 95 por ciento. Los resultados evidenciaron que la capacidad de predación de C. montrouzieri varió significativamente en función del estadio de desarrollo del depredador y del tipo de presa. El estado adulto y el cuarto estadio larval presentaron los mayores niveles de predación sobre los diferentes estados de desarrollo de P. ficus, dado su mayor longevidad respecto a los demás estadios de las pruebas evaluadas, destacando el adulto por registrar la mayor predación total. Asimismo, se observó un incremento progresivo de la eficiencia predadora conforme avanzó el desarrollo del depredador, lo que confirma el alto potencial de C. montrouzieri como agente de control biológico de P. ficus.
This study aimed to determine the predation capacity of Cryptolaemus montrouzieri Mulsant (Coleoptera: Coccinellidae) on Planococcus ficus Signoret (Hemiptera: Pseudococcidae) under laboratory conditions at the Biological Control Laboratory of the Department of Plant Health, Faculty of Agronomy, at the National University of Piura. The study was carried out between March and October 2024, with an average temperature of 21.8 ± 1.2 °C and a mean relative humidity of 57.9%. The predation capacity of the four larval instars and the adult stage of C. montrouzieri on eggs, nymphs, and adults of P. ficus was evaluated through five predation tests with five replicates per test. Evaluations were carried out daily in Petri dishes, recording the number of prey consumed by each predator individual. The data obtained were analyzed using non parametric statistical tests, namely the Kruskal–Wallis test and multiple comparisons with the Mann–Whitney test, with a significance level of 95%. The results showed that the predation capacity of C. montrouzieri varied significantly depending on the developmental stage of the predator and the type of prey. The adult stage and the fourth larval instar exhibited the highest levels of predation on the different developmental stages of P. ficus, due to their greater longevity compared to the other stages evaluated in the predation tests, with the adult showing the highest total predation. Likewise, a progressive increase in predatory efficiency was observed as the predator developed, confirming the high potential of C. montrouzieri as a biological control agent of P. ficus.
This study aimed to determine the predation capacity of Cryptolaemus montrouzieri Mulsant (Coleoptera: Coccinellidae) on Planococcus ficus Signoret (Hemiptera: Pseudococcidae) under laboratory conditions at the Biological Control Laboratory of the Department of Plant Health, Faculty of Agronomy, at the National University of Piura. The study was carried out between March and October 2024, with an average temperature of 21.8 ± 1.2 °C and a mean relative humidity of 57.9%. The predation capacity of the four larval instars and the adult stage of C. montrouzieri on eggs, nymphs, and adults of P. ficus was evaluated through five predation tests with five replicates per test. Evaluations were carried out daily in Petri dishes, recording the number of prey consumed by each predator individual. The data obtained were analyzed using non parametric statistical tests, namely the Kruskal–Wallis test and multiple comparisons with the Mann–Whitney test, with a significance level of 95%. The results showed that the predation capacity of C. montrouzieri varied significantly depending on the developmental stage of the predator and the type of prey. The adult stage and the fourth larval instar exhibited the highest levels of predation on the different developmental stages of P. ficus, due to their greater longevity compared to the other stages evaluated in the predation tests, with the adult showing the highest total predation. Likewise, a progressive increase in predatory efficiency was observed as the predator developed, confirming the high potential of C. montrouzieri as a biological control agent of P. ficus.
Description
Universidad Nacional Agraria La Molina. Escuela de Posgrado. Maestría en
Entomología
Keywords
Control biológico
Citation
Date
2026
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