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Biology and Population Dynamics of the American Vine Moth and the Potential Biocontrol with Trichogramma pretiosum

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Abstract

The American grapevine moth (AGVM), Lasiothyris luminosa (Razowski & Becker) (Lepidoptera: Tortricidae), was recently registered as a new pest for table grapes in the Northeast region of Brazil. In the present study, two approaches were made aiming to aid information to support management strategies for the new pest control: (i) study AGVM biology in the laboratory and its population dynamics in the field and (ii) evaluate Trichogramma pretiosum Riley as a potential biological control method against L. luminosa. The AGVM population dynamics showed a similar trend in the three grapevine monitored vineyards. The larvae started occurring at 30 days after pruning (DAP), pre-bloom stage, with a peak population between 54 and 78 DAP, following a decrease until harvest. The AGVM females larva, pupa, and egg-adult period were longer than males. The egg-adult period was 42.1 and 45.2 days for male and females, respectively. Trichogramma pretiosum was able to parasitize L. luminosa eggs. The T. pretiosum egg-adult period was 10.2 days with a 98.5% pupa survivorship at 25 °C. The release of T. pretiosum in the vineyards resulted in 65.5 to 73.2% AGVM egg parasitism. Our findings bring the first biological and population dynamics information for L. luminosa, which can help developing efficient approaches to monitor and control the pest in grapevines. The release of T. pretiosum in the vineyard is a potential biological control option to AGVM.

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Acknowledgements

We would like to thank the table grape grower for the vineyard areas used in the study, to LD Geremias for the manuscript review, and to ST Freitas for the manuscript English style review.

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TCCL conceived and designed the research. TCCL, AFT, and ATPA conducted the experiments. TCCL analyzed the data and wrote the manuscript. All authors read, reviewed, and approved the manuscript.

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Correspondence to Tiago Cardoso da Costa-Lima.

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The authors declare no competing interests.

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Edited by Anne-Nathalie Volkoff

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da Costa-Lima, T.C., de Araújo, A.T.P. & Torris, A.F. Biology and Population Dynamics of the American Vine Moth and the Potential Biocontrol with Trichogramma pretiosum. Neotrop Entomol 50, 470–475 (2021). https://doi.org/10.1007/s13744-021-00850-w

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  • DOI: https://doi.org/10.1007/s13744-021-00850-w

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