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Strong oviposition preference for Bt over non-Bt maize in Spodoptera frugiperda and its implications for the evolution of resistance

Overview of attention for article published in BMC Biology, June 2014
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Title
Strong oviposition preference for Bt over non-Bt maize in Spodoptera frugiperda and its implications for the evolution of resistance
Published in
BMC Biology, June 2014
DOI 10.1186/1741-7007-12-48
Pubmed ID
Authors

Pilar Téllez-Rodríguez, Ben Raymond, Ivis Morán-Bertot, Lianet Rodríguez-Cabrera, Denis J Wright, Carlos G Borroto, Camilo Ayra-Pardo

Abstract

Transgenic crops expressing Bt toxins have substantial benefits for growers in terms of reduced synthetic insecticide inputs, area-wide pest management and yield. This valuable technology depends upon delaying the evolution of resistance. The 'high dose/refuge strategy', in which a refuge of non-Bt plants is planted in close proximity to the Bt crop, is the foundation of most existing resistance management. Most theoretical analyses of the high dose/refuge strategy assume random oviposition across refugia and Bt crops RESULTS: In this study we examined oviposition and survival of Spodoptera frugiperda across conventional and Bt maize and explored the impact of oviposition behaviour on the evolution of resistance in simulation models. Over six growing seasons oviposition rates per plant were higher in Bt crops than in refugia. The Cry1F Bt maize variety retained largely undamaged leaves, and oviposition preference was correlated with the level of feeding damage in the refuge. In simulation models, damage-avoiding oviposition accelerated the evolution of resistance and either led to requirements for larger refugia or undermined resistance management altogether. Since larval densities affected oviposition preferences, pest population dynamics affected resistance evolution: larger refugia were weakly beneficial for resistance management if they increased pest population sizes and the concomitant degree of leaf damage.

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Mendeley readers

The data shown below were compiled from readership statistics for 101 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 101 100%

Demographic breakdown

Readers by professional status Count As %
Student > Master 23 23%
Researcher 22 22%
Student > Ph. D. Student 11 11%
Student > Bachelor 9 9%
Student > Doctoral Student 5 5%
Other 13 13%
Unknown 18 18%
Readers by discipline Count As %
Agricultural and Biological Sciences 62 61%
Biochemistry, Genetics and Molecular Biology 8 8%
Environmental Science 4 4%
Engineering 4 4%
Sports and Recreations 1 <1%
Other 0 0%
Unknown 22 22%