Mortality dynamics of spodoptera frugiperda (Lepidoptera: Noctuidae) immatures in maize

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We characterized the dynamics of mortality factors affecting immature developmental stages of the fall armyworm, Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae). Multiple decrement life tables for egg and early larval stages of S. frugiperda in maize (Zea maysL.) fields were developed with and without augmentative releases of Telenomus remus Nixon (Hymenoptera: Platygastridae) from 2009 to 2011. Total egg mortality ranged from 73 to 81% and the greatest egg mortality was due to inviability, dislodgement, and predation. Parasitoids did not cause significant mortality in egg or early larval stages and the releases of T. remusdid not increase egg mortality. Greater than 95% of early larvae died from predation, drowning, and dislodgment by rainfall. Total mortality due to these factors was largely irreplaceable. Results indicate that a greater effect in reducing generational survival may be achieved by adding mortality to the early larval stage of S. frugiperda. Copyright:




Varella, A. C., Menezes-Netto, A. C., De Souza Alonso, J. D., Caixeta, D. F., Peterson, R. K. D., & Fernandes, O. A. (2015). Mortality dynamics of spodoptera frugiperda (Lepidoptera: Noctuidae) immatures in maize. PLoS ONE, 10(6).

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