Evaluation of commercial trap types and lures on the population dynamics ofHelicoverpa armigera(Hubner) (Lepidoptera: Noctuidae) and its effects on non-targets insects

Abstract

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Different Trap Types Depict Dissimilar Spatio-Temporal Distribution of Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) in Cotton Fields

“…Monitoring of H. armigera is largely based on the utilization of different types of traps, with pheromone-baited traps being the most popular, since the discovery of the male attractant of this species as a mixture of (Z)-11-hexadecenal and (Z)-9-hexadecenal [9]. In this context, there are numerous studies that have used traps to estimate the population fluctuation of H. armigera, as well as to time any control measures during the growing season [10][11][12][13]. The most popular traps that have been used extensively for this purpose are the so called "funnel" traps, on which the adults are captured in a "bucket" that usually contains a killing agent [13].…”

“…In this context, there are numerous studies that have used traps to estimate the population fluctuation of H. armigera, as well as to time any control measures during the growing season [10][11][12][13]. The most popular traps that have been used extensively for this purpose are the so called "funnel" traps, on which the adults are captured in a "bucket" that usually contains a killing agent [13]. Funnel traps have an advantage over traps with exposed adhesive surfaces, such as the delta traps, given that the latter can capture a finite number of adults, as compared with the funnel traps that have a much higher capturing capacity [13].…”

“…The most popular traps that have been used extensively for this purpose are the so called "funnel" traps, on which the adults are captured in a "bucket" that usually contains a killing agent [13]. Funnel traps have an advantage over traps with exposed adhesive surfaces, such as the delta traps, given that the latter can capture a finite number of adults, as compared with the funnel traps that have a much higher capturing capacity [13]. This pattern has been replicated even in the case of small-bodied species, such as the pink bollworm, Pectinophora gossypiella (Saunders) (Lepidoptera: Gelechiidae) [14].…”

Genetic diversity and demographic history of the Old World Bollworm, Helicoverpa armigera (Hubner) (Lepidoptera: Noctuidae), in Ethiopia inferred from mitochondrial gene sequences

“…Up to two population peaks of H . armigera were reported in Ethiopia, beginning from June until the month of March, indicating that their population dynamics were dependent on various weather condition parameters (Fite et al, 2020 ). Furthermore, individuals of this species can tolerate a wide range of temperatures and drought by entering facultative diapause.…”

“…The species has high reproductive and fecundity rates (Naseri et al, 2009;Razmjou et al, 2014) and is capable of extensive long-distance migration (Fitt, 1989) of up to 2000 km (Behere et al, 2013;Jones et al, 2015) in a lifetime and up to 40 km in a single night (Jones et al, 2015). Up to two population peaks of H. armigera were reported in Ethiopia, beginning from June until the month of March, indicating that their population dynamics were dependent on various weather condition parameters (Fite et al, 2020). Furthermore, individuals of this species can tolerate a wide range of temperatures and drought by entering facultative diapause.…”