Sterile Insect Releases for Control of<i>Thaumatotibia leucotreta</i>(Lepidoptera: Tortricidae): An Assessment on Semi-Commercial Scale

Hofmeyr, Jan-Hendrik S.; Hofmeyr, M.; Carpenter, James E.; Bloem, Stephanie; Slabbert, J.P.

doi:10.4001/003.024.0080

Cited by 16 publications

(10 citation statements)

References 8 publications

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“…Due to the short-lived and comparable effect of these chemicals on irradiated and non-irradiated male T. leucotreta, ratios of sterile:wild moths should be maintained regardless of whether sprays are applied or not. These findings are supported by assessments conducted in a T. leucotreta SIT pilot project during -2006(Hofmeyr, Hofmeyr, Carpenter, Bloem, & Slabbert, 2016 and by field data gathered as part of the commercial T. leucotreta monitoring programme conducted by XSIT from 2012 to 2014. Cooperating farms utilized vastly different approaches to insect pest management without any significant differences in recaptures of released sterile moths and ratios of sterile:wild moths.…”

Section: Discussionsupporting

confidence: 64%

Integrating chemical control with sterile insect releases in an integrated pest management programme for Thaumatotibia leucotreta

Nepgen¹,

Moore

Hill

2018

J Applied Entomology

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False codling moth Thaumatotibia leucotreta (Meyrick) (Lepidoptera: Tortricidae) is an important indigenous pest of citrus in southern Africa. Successful control is dependent upon integration of area‐wide sterile insect releases and other suppression methods. The aim of this work was to test pyrethroid and organophosphate‐based insecticides (tau‐fluvalinate and chlorpyrifos) for their residual effect on mortality of released irradiated T. leucotreta male moths. Both of these insecticides were effective in killing irradiated T. leucotreta for 7 days after application on leaves, after which degradation of the active ingredient resulted in a marked reduction in efficacy after 14 days and rendering them harmless. Mortality was found to be similar for irradiated and non‐irradiated male T. leucotreta after treatment. Consequently, even though these insecticides might have an effect on moths in the field, ratios of sterile:wild moths should not be altered. Supporting field data from six sites in the Sundays River Valley over a season of sterile insect releases showed the conventional chemical crop protection programme to be as effective as an integrated pest management programme in facilitating effective control of T. leucotreta through sterile insect releases. The study also confirmed that the ratios of sterile:wild male moths in the commercial citrus orchards were not affected by the application of insecticides. These findings confirm the high potential of sterile insect releases for control of T. leucotreta in citrus.

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Section: Discussionsupporting

confidence: 64%

Integrating chemical control with sterile insect releases in an integrated pest management programme for Thaumatotibia leucotreta

Nepgen¹,

Moore

Hill

2018

J Applied Entomology

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“…The FCM has been controlled traditionally using broad-spectrum insecticides, but biological control methods and mating disruption are also available. FCM has developed resistance to many of the commonly used insecticides, and as a result, the SIT has been developed for this pest as a viable additional control tactic [73,74].…”

Section: Successful Application Of the Sit/is Against Lepidopteranmentioning

confidence: 99%

Advances and Challenges of Using the Sterile Insect Technique for the Management of Pest Lepidoptera

Marec

Vreysen

2019

Insects

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Over the past 30 years, the sterile insect technique (SIT) has become a regular component of area-wide integrated pest management (AW-IPM) programs against several major agricultural pests and vectors of severe diseases. The SIT-based programs have been especially successful against dipteran pests. However, the SIT applicability for controlling lepidopteran pests has been challenging, mainly due to their high resistance to the ionizing radiation that is used to induce sterility. Nevertheless, the results of extensive research and currently operating SIT programs show that most problems with the implementation of SIT against pest Lepidoptera have been successfully resolved. Here, we summarize the cytogenetic peculiarities of Lepidoptera that should be considered in the development and application of SIT for a particular pest species. We also discuss the high resistance of Lepidoptera to ionizing radiation, and present the principle of derived technology based on inherited sterility (IS). Furthermore, we present successful SIT/IS applications against five major lepidopteran pests, and summarize the results of research on the quality control of reared and released insects, which is of great importance for their field performance. In the light of new research findings, we also discuss options for the development of genetic sexing strains, which is a challenge to further improve the applicability of SIT/IS against selected lepidopteran pests.

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“…It is being developed in some regions in South Africa since 2002 for the control of FCM (Boersma et al ., 2018). It is an effective strategy which can reduce infestation by 95.2%, as a stand-alone treatment (Hofmeyr et al ., 2016 a ). The response of FCM to radiation for adult sterilization is dose-dependent.…”

Section: Management Strategies Of Fcmmentioning

confidence: 99%

Pest status, bio-ecology and management of the false codling moth,Thaumatotibia leucotreta(Meyrick) (Lepidoptera: Tortricidae) and its implication for international trade

Adom

Fening

Billah

et al. 2020

Bull. Entomol. Res.

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The false codling moth (FCM), Thaumatotibia leucotreta (Lepidoptera: Tortricidae) is an insect pest which represents an important threat to the production and marketing of a wide range of agricultural crops in the African-Caribbean-Pacific (ACP) countries. The FCM reduces not only the yield and quality of the crop but also as a quarantine insect pest, restricts the trade of susceptible agricultural produce on the international market. In addition, little research has been conducted in the ACP countries on the bio-ecology and sustainable management of this pest, especially on vegetables for export. Thus, action-oriented research aimed at understanding the bio-ecology of this important pest is essential to achieve effective management. Various management interventions against this pest have been used in some parts of the world, especially in South Africa on citrus. Currently, farm sanitation is regarded as the key management strategy. Exploring and improving on other interventions such as Sterile Insect Technique, monitoring and mass trapping of male moths, augmentative biological control, use of bio-pesticides, protected cultivation and cold treatment may help to mitigate the expansion of FCM into other countries, especially in the European and Mediterranean Plant Protection Organization region where it has become a regulated insect pest since 2014. This review discussed the bio-ecology of FCM and highlighted some of the challenges and opportunities for its effective management and its implication for international trade, especially the export of chillies from the ACP countries into the European Union market which requires strict phytosanitary regulations.

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Sterile Insect Releases for Control ofThaumatotibia leucotreta(Lepidoptera: Tortricidae): An Assessment on Semi-Commercial Scale

Cited by 16 publications

References 8 publications

Integrating chemical control with sterile insect releases in an integrated pest management programme for Thaumatotibia leucotreta

Integrating chemical control with sterile insect releases in an integrated pest management programme for Thaumatotibia leucotreta

Advances and Challenges of Using the Sterile Insect Technique for the Management of Pest Lepidoptera

Pest status, bio-ecology and management of the false codling moth,Thaumatotibia leucotreta(Meyrick) (Lepidoptera: Tortricidae) and its implication for international trade

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