Nivel de predación de ninfas y adultos de Podisus nigrispinus sobre diferentes estadíos larvales de Spodoptera frugiperda
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Date
2018
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Universidad Nacional de Trujillo
Abstract
Para determinar los niveles de predación de ninfas y adultos de Podisus nigrispinus, sobre larvas de Spodoptera frugiperda, se realizaron crianzas masivas de ambos insectos, en condiciones de laboratorio con temperatura entre 24.4°C a 28.5°C y 65.3 a 74.4 % de humedad relativa. Las ninfas III, IV, V y adultos de Podisus nigrispinus fueron alimentadas con larvas de Spodoptera frugiperda de los estadios III al VI, los instar larval I y II no se incluyeron debido a que contienen pocos fluidos y no son del agrado del predador. Se enfrentaron de manera individual, un predador con una presa, y se realizaron 5 repeticiones de cada enfrentamiento. Podisus nigrispinus en el estado ninfal y adulto consumió larvas preferentemente de los estadios III y IV de Spodoptera frugiperda. Durante el estado ninfal y estado adulto el consumo promedio total fue de 77.2 y 159.4 larvas respectivamente. En base a estos resultados podemos concluir que Podisus nigrispinus es un eficiente controlador de larvas del estadio III y IV de Spodoptera frugiperda.
ABSTRACT To determine the levels of predation of nymphs and adults of Podisus nigrispinus, on larvae of Spodoptera frugiperda, massive rearing of both insects was carried out, under laboratory conditions with a temperature between 24.4 ° C to 28.5 ° C and 65.3 to 74.4% relative humidity . The nymphs III, IV, V and adults of Podisus nigrispinus were fed with larvae of Spodoptera frugiperda from stage III to VI, instar larval I and II were not included because they contain few fluids and are not liked by the predator. They faced each other individually, a predator with a prey, and 5 repetitions of each confrontation were made. Nymph and adult stage the Podisus nigrispinus consumed larvae preferably from stage III and IV of Spodoptera frugiperda During the nymphal state and adult the average consumption was 77.2 and 159.4 larvae repectively. Based on these results we can conclude that Podisus nigrispinus is an eficient controller of stage III and IV larvae of Spodoptera frugiperda.
ABSTRACT To determine the levels of predation of nymphs and adults of Podisus nigrispinus, on larvae of Spodoptera frugiperda, massive rearing of both insects was carried out, under laboratory conditions with a temperature between 24.4 ° C to 28.5 ° C and 65.3 to 74.4% relative humidity . The nymphs III, IV, V and adults of Podisus nigrispinus were fed with larvae of Spodoptera frugiperda from stage III to VI, instar larval I and II were not included because they contain few fluids and are not liked by the predator. They faced each other individually, a predator with a prey, and 5 repetitions of each confrontation were made. Nymph and adult stage the Podisus nigrispinus consumed larvae preferably from stage III and IV of Spodoptera frugiperda During the nymphal state and adult the average consumption was 77.2 and 159.4 larvae repectively. Based on these results we can conclude that Podisus nigrispinus is an eficient controller of stage III and IV larvae of Spodoptera frugiperda.
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Keywords
Predator, Larva, Presa, Estado de ninfa y adulto, Controlador eficiente