Determining the migration duration of rice leaf folder (Cnaphalocrocis medinalis (Guenee)) moths using a trajectory analytical approach

A - Papers appearing in refereed journals

Wang, F. Y., Yang, F., Lu, M. H., Luo, S. Y., Zhai, B. P., Lim, K. S., McInerney, C. E. and Hu, G. 2017. Determining the migration duration of rice leaf folder (Cnaphalocrocis medinalis (Guenee)) moths using a trajectory analytical approach. Scientific Reports. 7 (39853), pp. 1-8. https://doi.org/10.1038/srep39853

AuthorsWang, F. Y., Yang, F., Lu, M. H., Luo, S. Y., Zhai, B. P., Lim, K. S., McInerney, C. E. and Hu, G.
Abstract

Many moths finish their long distance migration after consecutive nights, but little is known about migration duration and distance. This information is key to predicting migration pathways and understanding their evolution. Tethered flight experiments have shown that ovarian development of rice leaf folder (Cnaphalocrocis medinalis [Guenee]) moths was accelerated and synchronized by flight in the first three nights, whereby most females were then matured for mating and reproduction. Thus, it was supposed that this moth might fly three nights to complete its migration. To test this hypothesis, 9 year's field data for C. medinalis was collected from Nanning, Guangxi Autonomous Region in China. Forward trajectories indicated that most moths arrived at suitable breeding areas after three nights' flight. Thus, for C. medinalis this migration duration and distance was a reasonable adaptation to the geographic distribution of suitable habitat. The development of female moth ovaries after three consecutive night flights appears to be a well-balanced survival strategy for this species to strike between migration and reproduction benefits. Hence, an optimum solution of migration-reproduction trade-offs in energy allocation evolved in response to the natural selection on migration route and physiological traits.

Keywordsnilaparvata-lugens stal; insect migration; Flight; Lepidoptera; Temperature; distance; consequences; Dispersal; Pyralidae; Evolution
Year of Publication2017
JournalScientific Reports
Journal citation7 (39853), pp. 1-8
Digital Object Identifier (DOI)https://doi.org/10.1038/srep39853
Open accessPublished as ‘gold’ (paid) open access
FunderBiotechnology and Biological Sciences Research Council
China Scholarship Council
Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
Funder project or codeUK-China Joint Centre for Sustainable Intensification in Agriculture (CSIA)
Publisher's version
Output statusPublished
Publication dates
Online04 Jan 2017
Publication process dates
Accepted29 Nov 2016
PublisherSpringer Nature
Nature Publishing Group
Copyright licenseCC BY
ISSN2045-2322

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