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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Article
Author(s)
Julie, R. Mokwele1, Ndivhuho, G. Khorommbi2, Juliet, R. Moeti1, Emily, N. Munganga1 and JanHendrik Venter1
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DOI:10.17265/2162-5263/2021.05.004
Affiliation(s)
1. Directorate Plant Health, Department of Agriculture, Land Reform and Rural Development, Private Bag X250, Pretoria 0001, South Africa
2. Directorate Crop Production, Limpopo Department of Agriculture and Rural Development, 69 Biccard St, Polokwane 0699, South Africa
ABSTRACT
Bactrocera dorsalis syn Bactrocera invadens (Diptera: Tephritidae) (B. dorsalis) is a quarantine pest of Asian origin with host plants such as Mango (Mangifera indica), Guava (Psidium guajava), Citrus (Citrus spp.) and Papaya (Carica papaya). B. dorsalis is considered as a major threat to many countries due to its ability to establish and spread to new areas, the damage it causes to hosts and potential impact on market access. Due to this threat, the DALRRD (Department of Agriculture, Land Reform and Rural Development) placed traps to monitor B. dorsalis in Mopani District Municipality in 2010. The traps were serviced once a month. A single male specimen of B. dorsalis was detected for the first time on 27 April 2012, in the Deerpak area in Mopani District Municipality, of the Limpopo Province, South Africa. Other incursions occurred in Letsitele and Hoedspruit in the same district, in December 2012. Subsequent to the detections, the DALRRD initiated delimiting surveys. A quarantine area was implemented to regulate the removal of host fruits to contain the pest and to initiate an eradication program. The eradication and suppression methods focused on applications of BAT (Bait Application Technique), MAT (Male Annihilation Technique) and orchard sanitation. An integrated approach was followed by involving several role players which included rural communities, farmers, industry organizations, DALRRD and LDARD (Limpopo Department of Agriculture and Rural Development). After the initial detection in 2012, B. dorsalis was again detected in Deerpak and Letsitele in 2013, but, not in Hoedspruit. In 2014 however, B. dorsalis was detected in all three areas with higher numbers in summer, with the highest number of 11,953, 2,260 and 8 in Deerpak, Hoedspruit and Letsitele, respectively. This increase could have been attributed to the higher than normal rainfall and reduced phytosanitary efforts in some areas by affected parties. The results of this study revealed that B. dorsalis can be successfully eradicated and or suppressed provided that role players work together and invest their efforts and resources in an area-wide approach.
KEYWORDS
Quarantine, B. dorsalis, eradication, suppression, government, farmers, Mopani.
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