Comparative Effectiveness and Injury to Tomato Plants of Three Neotropical Mirid Predators of Tuta absoluta (Lepidoptera: Gelechiidae)

2018 ◽  
Vol 111 (3) ◽  
pp. 1080-1086 ◽  
Author(s):  
Joop C van Lenteren ◽  
V H P Bueno ◽  
F J Calvo ◽  
Ana M Calixto ◽  
Flavio C Montes
Keyword(s):  
Comparative Effectiveness ◽  
Tuta Absoluta ◽  
Tomato Plants

scholarly journals Parasitism of Tuta absoluta in tomato plants by Trichogramma pretiosum Riley in response to host density and plant structures

2008 ◽  
Vol 38 (6) ◽  
pp. 1504-1509 ◽  
Author(s):  
Cristina Arantes Faria ◽  
Jorge Braz Torres ◽  
Adriana Maria Vieira Fernandes ◽  
Angela Maria Isidro Farias
Keyword(s):  
Host Density ◽  
Tuta Absoluta ◽  
Plant Canopy ◽  
Trichogramma Pretiosum ◽  
Parasitism Rate ◽  
Tomato Plants ◽  
Processing Tomato ◽  
Upper Third ◽  
Oviposition Sites ◽  
Host Patch

One important factor determining the efficacy of parasitoids is the way they exploit different host patch. This study evaluated the response of females of Trichogramma pretiosum Riley (Hymenoptera: Trichogrammatidae) to the oviposition sites of Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) on processing tomato plants. In fully developed caged tomato plants T. absoluta moths were released, followed by the release of T. pretiosum females 12h later. After 24h of parasitoid release, the moth oviposition sites were mapped according to the plant canopy, and levels of parasitism assessed. The parasitism rate varied from 1.5 to 28%. There was not influence of plant structures on parasitism, except for the absence of parasitism on the plant apex. Levels of both T. absoluta oviposition and parasitism by T. pretiosum were higher on the upper third of the plant, decreasing downward along the plant canopy.

scholarly journals Increased water salinity applied to tomato plants accelerates the development of the leaf miner Tuta absoluta through bottom-up effects

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Peng Han ◽  
Zhi-jian Wang ◽  
Anne-Violette Lavoir ◽  
Thomas Michel ◽  
Aurélie Seassau ◽  
...  
Keyword(s):  
High Salinity ◽  
Saline Water ◽  
Development Rate ◽  
Tuta Absoluta ◽  
Water Salinity ◽  
Leaf Miner ◽  
Bottom Up ◽  
Tomato Plants ◽  
Tomato Leaf Miner ◽  
Pupal Mass

Abstract Variation in resource inputs to plants may trigger bottom-up effects on herbivorous insects. We examined the effects of water input: optimal water vs. limited water; water salinity: with vs. without addition of 100 mM NaCl; and their interactions on tomato plants (Solanum lycopersicum), and consequently, the bottom-up effects on the tomato leaf miner, Tuta absoluta (Meytick) (Lepidoptera: Gelechiidae). Plant growth was significantly impeded by limited water input and NaCl addition. In terms of leaf chemical defense, the production of tomatidine significantly increased with limited water and NaCl addition, and a similar but non-significant trend was observed for the other glycoalkaloids. Tuta absoluta survival did not vary with the water and salinity treatments, but the treatment “optimal water-high salinity” increased the development rate without lowering pupal mass. Our results suggest that caution should be used in the IPM program against T. absoluta when irrigating tomato crops with saline water.

scholarly journals Early identification of Tuta absoluta in tomato plants using deep learning

2020 ◽  
Vol 10 ◽  
pp. e00590
Author(s):  
Lilian Mkonyi ◽  
Denis Rubanga ◽  
Mgaya Richard ◽  
Never Zekeya ◽  
Shimada Sawahiko ◽  
...  
Keyword(s):  
Deep Learning ◽  
Early Identification ◽  
Tuta Absoluta ◽  
Tomato Plants

scholarly journals Nitrogen and water availability to tomato plants triggers bottom-up effects on the leafminer Tuta absoluta

2014 ◽  
Vol 4 (1) ◽  
Author(s):  
Peng Han ◽  
Anne-Violette Lavoir ◽  
Jacques Le Bot ◽  
Edwige Amiens-Desneux ◽  
Nicolas Desneux
Keyword(s):  
Water Availability ◽  
Tuta Absoluta ◽  
Bottom Up ◽  
Tomato Plants

scholarly journals Combination of generalist predators, Nesidiocoris tenuis and Macrolophus pygmaeus, with a companion plant, Sesamum indicum: What benefit for biological control of Tuta absoluta?

PLoS ONE ◽  
2021 ◽  
Vol 16 (9) ◽  
pp. e0257925
Author(s):  
Kouassi Arthur J. Konan ◽  
Lucie S. Monticelli ◽  
San-Whouly M. Ouali-N’goran ◽  
Ricardo Ramirez-Romero ◽  
Thibaud Martin ◽  
...  
Keyword(s):  
Sesamum Indicum ◽  
Tuta Absoluta ◽  
Crop Damage ◽  
Cultivated Plants ◽  
Tomato Plants ◽  
Macrolophus Pygmaeus ◽  
Better Regulation ◽  
Companion Plant ◽  
Nesidiocoris Tenuis ◽  
Companion Plants

Tuta absoluta is one of the most damaging pests of tomato crops worldwide. Damage due to larvae may cause up to 100% loss of tomato production. Use of natural enemies to control the pest, notably predatory mirids such as Nesidiocoris tenuis and Macrolophus pygmaeus, is increasingly being promoted. However, considering the potential damage caused to tomatoes by these omnivorous predators in the absence of T. absoluta, an alternative solution could be required to reduce tomato damage and improve the predators’ performance. The use of companion plants can be an innovative solution to cope with these issues. The present study aimed to determine the influence of companion plants and alternative preys on the predators’ performance in controlling T. absoluta and protecting tomato plants. We evaluated the effect of predators (alone or combined) and a companion plant (sesame (Sesamum indicum)) on T. absoluta egg predation and crop damage caused by N. tenuis. The influence of an alternative prey (Ephestia kuehniella eggs) on the spatial distribution of predators was also evaluated by caging them in the prey presence or absence, either on tomato or sesame plants or on both. We found that the presence of sesame did not reduce the efficacy of N. tenuis or M. pygmaeus in consuming T. absoluta eggs; hatched egg proportion decreased when N. tenuis, M. pygmaeus, or both predators were present. More specifically, this proportion was more strongly reduced when both predators were combined. Sesame presence also reduced necrotic rings caused by N. tenuis on tomato plants. Nesidiocoris tenuis preferred sesame over tomato plants (except when food was provided only on the tomato plant) and the upper part of the plants, whereas M. pygmaeus preferred tomato to sesame plants (except when food was provided only on the sesame plant) and had no preference for a plant part. Combination of predators N. tenuis and M. pygmaeus allows for better coverage of cultivated plants in terms of occupation of different plant parts and better regulation of T. absoluta populations. Sesamum indicum is a potential companion plant that can be used to significantly reduce N. tenuis damage to tomatoes.

scholarly journals Monitoring and population changes of Tuta absoluta (Meyrick, 1917) on tomato under greenhouse conditions in an arid expanse of south-eastern Algeria

2020 ◽  
Vol 115 (2) ◽  
pp. 409
Author(s):  
Farid ALLACHE ◽  
Fatma DEMNATI
Keyword(s):  
Growing Season ◽  
Tuta Absoluta ◽  
Leaf Miner ◽  
Population Changes ◽  
Tomato Plants ◽  
Growing Seasons ◽  
Cropping Seasons ◽  
Eastern Algeria ◽  
Greenhouse Tomatoes ◽  
First Time

<p>The population changes of <em>Tuta absoluta</em> was surveyed during three growing seasons in greenhouse tomatoes in Biskra. Introduced in 2009 for the first time, it seems to be well established on tomato crops in Biskra; while their natural enemies remained lacking, due possibly to pesticides overuse. All pest stages were present on tomato plants during the three cropping seasons. Important numbers of males were captured during the first growing season and the least during the third growing season. The first adults’ flight spread out between October and December. Adults’ flight significantly rose at the end of the plant cycle due to increased temperatures in all cultivation seasons. This can provide information on the infestation levels for the following cultivation years. The numbers of immature were low during the three cultivation seasons. March, April and May seem more favorable to the different leaf miner instars development for the three cropping seasons. This was due probably to temperature rising.</p>

scholarly journals Parasitoids of Tuta absoluta (Meyrick, 1917) (Lepidoptera: Gelechiidae) collected on tomato plants in Lavras, state of Minas Gerais, Brazil

2004 ◽  
Vol 64 (3a) ◽  
pp. 551-552 ◽  
Author(s):  
C. H. Marchiori ◽  
C. G. Silva ◽  
A. P. Lobo
Keyword(s):  
Minas Gerais ◽  
W State ◽  
Tuta Absoluta ◽  
Tomato Plants

The objective of this paper was to report on the occurrence of parasitoids of Tuta absoluta Meyrick (Lepidoptera: Gelechiidae) on tomato plants, under greenhouse conditions, in Lavras County (21º14'43"S; 44º59'59"W), State of Minas Gerais, Brazil, from August 2001 to February 2002. Three groups of parasitoids were collected: 21 specimens of Bracon sp. (Braconidae), one specimen of Earinus sp. (Braconidae), and 13 specimens of Conura sp. (Chalcididae). The rate of parasitism for the three species was 4.2%, 0.2%, and 2.6%, respectively. This is the first reported occurrence of Earinus sp. parasitizing Tuta absoluta in Brazil.

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