<i>Tuta absoluta</i>Meyrick (Lepidoptera: Gelechiidae): A New Threat to Tomato Production in Sub-Saharan Africa

Brévault, Thierry; Sylla, Samba Ndao; Diatte, Mamadou; Bernadas, Gaëlle; Diarra, Karamoko

doi:10.4001/003.022.0202

Cited by 97 publications

(72 citation statements)

References 16 publications

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“…Native to South America, this Microlepidoptera has recently become an invasive pest on tomato crops in Europe (Desneux et al 2011) and Africa (Brévault et al 2014;Tonnang et al 2015). Tuta absoluta larvae destroy all aerial parts of plants (leaves, stems, fruits, buds and flowers), resulting in severe yield losses (i.e.…”

Section: Introductionmentioning

confidence: 99%

Oviposition deterrent activity of basil plants and their essentials oils against Tuta absoluta (Lepidoptera: Gelechiidae)

Yarou

Bawin

Boullis

et al. 2017

Environ Sci Pollut Res

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The leafminer Tuta absoluta Meyrick (Lepidoptera: Gelechiidae) is one of the most important pests of tomato, reducing crop yields by up to 100% in greenhouses and fields, in several countries globally. Because synthetic insecticides lead to resistance and have adverse effects on natural enemies and the health of producers, alternative control methods are needed. In this study, we assessed the oviposition-deterring effect of basil plants, Ocimum gratissimum L. and O. basilicum L. (Lamiaceae), using dual-choice behavioural assays performed in flight tunnels. We found that both plants significantly reduced T. absoluta oviposition behaviour on a tomato plant located nearby. To evaluate the potential effect of basil volatile organic compounds, we formulated essential oils of both plant species in paraffin oil, and observed a similar oviposition-deterring effect. Gas chromatography analyses detected 18 constituents in these essential oils which the major constituents included thymol (33.3%), p-cymene (20.4%), γ-terpinene (16.9%), myrcene (3.9%) in O. gratissimum and estragol (73.8%), linalool (8.6%), β-elemene (2.9%) and E-β-ocimene (2.6%) in O. basilicum. Twenty and 33 compounds were identified of the volatiles collected on O. gratissimum and O. basilicum plants, respectively. The main components include the following: p-cymene (33.5%), γ-terpinene (23.6%), α-terpinene (7.2%), α-thujene (6.7%) and E-α-bergamotene (38.9%) in O. gratissimum, and methyl eugenol (26.1%), E-β-ocimene (17.7%), and linalool (9.4%) in O. basilicum. Four compounds (α-pinene, β-pinene, Myrcene, Limonene) were common in essential oils and plants. Our results suggest the valuable potential of basil and associated essential oils as a component of integrated management strategies against the tomato leafminer.

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Section: Introductionmentioning

confidence: 99%

Oviposition deterrent activity of basil plants and their essentials oils against Tuta absoluta (Lepidoptera: Gelechiidae)

Yarou

Bawin

Boullis

et al. 2017

Environ Sci Pollut Res

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“…The tomato leaf miner, Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) also known as South American tomato pinworm, is one of the key insect pests of tomato [13]. This may be because of the extensive damage it elicits, lack of ecologically relevant methods for management [14] and pesticide resistance [15].…”

Section: Introductionmentioning

confidence: 99%

First report of tomato leaf miner, Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae), in Botswana

2017

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Background:The tomato leaf miner Tuta absoluta (Lepidoptera: Gelechiidae) is an invasive insect pest of tomato and other solanaceous plants which is rapidly expanding its geographic range. It has a highly damaging effect on tomatoes and potential of threatening food production and consequently national food security. Here, we report on the first detection of T. absoluta in Botswana, its consequences on agriculture and food security, and recommend on management strategies. The pest was observed feeding on Solanum lycopersicum L. plants at Genesis farm, Matshelagabedi village in northern Botswana. Following detection, we incubated infected tomato fruits until adult eclosion. External morphology was conducted and confirmed at Botswana International University of Science and Technology (Botswana). Molecular identification and morphological male genitalia were confirmed at Stellenbosch University (South Africa). In addition, we set up some sex-specific pheromone (Tuta optima PH-937-OPTI) at the core detection site and surrounding areas.Results: Morphological genitalia features of pheromone-baited trap catches confirmed the insect pest was indeed T. absoluta. Molecular analysis also confirmed the morphological identification and thus confirming this first report of T. absoluta in Botswana. Conclusion:This first record of T. absoluta in Botswana is worth reporting to promote coordinated efforts amongst stakeholders, research specialists and extension officers in Botswana and across the southern African region in monitoring and managing the pest.

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“…In African, T. absoluta was firstly reported in Algeria, Morocco, and Libya in 2008 and continued to invade Egypt in 2010 (Moussa et al, 2013), then reached Sudan and South Sudan in 2011 (Pfeiffer et al, 2013;Brevault et al, 2014). The pest had accessed to Ethiopia in 2012 most probably from Sudan or Yemen (Goftishu et al, 2014) and Kenya in 2013 , Tanzania and Senegal in 2014 (Biondi et al, 2015;Tonnang et al, 2015), Uganda in 2015 (Tumuhaise et al, 2016), South Africa in 2016 (Visser et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Tomato leafminer [(Tuta absoluta Meyrick) (Lepidoptera: Gelechiidae)] and its current ecofriendly management strategies: A review

Aynalem¹

2018

J. Agric. Biotech. Sustain. Dev.

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Continue climatic changes in the world enhance the emergence of invasive agricultural insect pests.Tuta absoluta is one of the most devastating tomato leafminer and it spreads extensively in almost all parts of the world. It is a serious threat for tomato production and it results in highest damage. T. absoluta has fast growth rate with developmental stages of egg, larvae, pupa, and adult and it adapts to different environmental conditions. A larva is the most destructive one that consumes preferably leaves, stems and fruits of the tomato plant by hiding within mesophyll of the plant tissues. Although different environmentally hazardous pesticides are used against T. absoluta, none of the insecticides give full control due to the resistance development. This problem calls an urgent search for eco-friendly alternatives to control this invasive insect. Recent investigations are focused on different environmental friendly approaches that inclusively termed as IPM strategies. These are cultural practices, biopesticides, and biological using parasitoids, predators, microbial cells, microbial products, RNAi, inheritance sterility development in insect and pest resistant plant cultivar production are considered as promising alternatives to control T. absoluta. Therefore, this review briefly describes the current status of these methods used to design suitable and sustainable management strategies against T. absoluta.

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Tuta absolutaMeyrick (Lepidoptera: Gelechiidae): A New Threat to Tomato Production in Sub-Saharan Africa

Cited by 97 publications

References 16 publications

Oviposition deterrent activity of basil plants and their essentials oils against Tuta absoluta (Lepidoptera: Gelechiidae)

Oviposition deterrent activity of basil plants and their essentials oils against Tuta absoluta (Lepidoptera: Gelechiidae)

First report of tomato leaf miner, Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae), in Botswana

Tomato leafminer [(Tuta absoluta Meyrick) (Lepidoptera: Gelechiidae)] and its current ecofriendly management strategies: A review

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