The fall armyworm is a polyphagous lepidopteran pest that primarily feeds on valuable global crops like maize. Insecticides and transgenic crops have long been a primary option for fall armyworm control, despite growing concerns about transgenic crop resistance inheritance and the rate of insecticide resistance development. Global dissemination of the pest species has highlighted the need for more sustainable approaches to managing overwhelming populations both in their native range and newly introduced regions. As such, integrated pest management programs require more information on natural enemies of the species to make informed planning choices. In this study, we present a cost analysis of the production of three biocontrol agents of the fall armyworm over a year. This model is malleable and aimed towards small-scale growers who might benefit more from an augmentative release of natural enemies than a repetitive use of insecticides, especially since, though the benefits of using either are similar, the biological control option has a lower development cost and is more environmentally sustainable.
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http://dx.doi.org/10.3390/insects14020169 | DOI Listing |
Front Physiol
December 2024
School of Agriculture and Biotechnology, Shenzhen Campus of Sun Yat-sen University, Shenzhen, China.
Introduction: The juvenile hormone (JH) and 20-hydroxyecdysone (20E) are the central regulating hormones of insect development. The timing of their secretion usually leads to developmental transitions.
Methods: The developmental transitions were evaluated via the starvation treatment and the expressions of two key metamorphosis inducing factor in .
Front Plant Sci
December 2024
Division of Entomology, ICAR-Indian Agricultural Research Institute, New Delhi, India.
In recent years, the fall armyworm, has rapidly emerged as a global invasive pest, challenging the maize production and leading to considerable economic losses. Developing resistant hybrids is essential for sustainable maize cultivation, which requires a comprehensive understanding of resistance traits and the underlying mechanisms in parental lines. To address this need, the present study aimed to identify the sources of resistance, age and stage-specific effects and role of phytochemicals in plant defense against in thirty diverse maize parental lines [17 female (A) and 13 male (R) lines].
View Article and Find Full Text PDFNat Prod Res
December 2024
Laboratório de Fitoquímica, Química Medicinal e Metabolômica - LFQMM - Instituto de Química - Universidade Federal de Alfenas - UNIFAL, Alfenas, MG, Brazil.
The fall armyworm is the most prevalent plague in crops associated with a reduction in corn production by up to 34%. Pesticides have been used to reduce this plague, but they cause several environmental problems including resistance, ecological imbalance, and toxicity to the final consumer. The use of plant extracts has been an effective manner of eradicating this plague from crop plantations.
View Article and Find Full Text PDFPest Manag Sci
December 2024
Department of Entomology and Plant Pathology, University of Arkansas, Fayetteville, AR, USA.
Background: While the mother knows best/preference performance hypothesis has been well tested in natural ecosystems, how these ecological principles differ in agroecosystems is less explored. In this study, we investigated the ovipositional preference and offspring performance of fall armyworm (FAW) across vegetative and reproductive stages of soybean.
Results: We examined trichomes, volatile organic compounds (VOCs) and assessed electroantennogram (EAG) measurements to understand how olfactory responses are affected by volatiles at different phenological stages during photoperiodism (photophase and scotophase).
Comp Biochem Physiol Part D Genomics Proteomics
December 2024
Institute of Entomology, Guizhou University/Guizhou Provincial Key Laboratory for Agricultural Pest Management of the Mountainous Region, Guizhou, Guiyang 550025, China.
Spodoptera frugiperda is a major invasive pest that poses a serious threat to crops worldwide. Low temperature is a key factor limiting the survival and reproduction for this pest. To study the responses of S.
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