First record of Tuta absoluta (Lepidoptera: Gelechiidae) in Uganda

2016 ◽  
Vol 36 (03) ◽  
pp. 135-139 ◽  
Author(s):  
Venansio Tumuhaise ◽  
Fathiya M. Khamis ◽  
Ambrose Agona ◽  
Godfrey Sseruwu ◽  
Samira A. Mohamed
Keyword(s):  
Solanum Lycopersicum ◽  
First Record ◽  
Morphological Features ◽  
Molecular Techniques ◽  
Tuta Absoluta ◽  
Invasive Pest ◽  
Insect Physiology ◽  
Black Head ◽  
Screen House

AbstractAn invasive pest,Tuta absoluta(Meyrick) has been observed infesting tomatoSolanum lycopersicumL. (Solanales: Solanaceae) in Central Uganda. The affected farmer made the report, and upon visiting the farm, we observed tiny larvae, green to cream in colour with a black head feeding on tomato leaves, fruit, as well as tender stems. Also, we saw several tiny moths resting on screen house linings. Delta traps baited with TUA-Optima®(Russell IPM) were set in and around the affected farm. Dozens of moths were attracted and trapped on the sticky surface of the traps. The team tentatively identified the insect asT. absoluta. Scientists at the International Centre of Insect Physiology and Ecology (icipe) in Nairobi, Kenya identified the insect using morphological features and molecular techniques.

scholarly journals An updated global COI barcode reference data set for Fall Armyworm (Spodoptera frugiperda) and first record of this species in Bhutan

2020 ◽  
Author(s):  
Kiran Mahat ◽  
Andrew Mitchell ◽  
Tshelthrim Zangpo
Keyword(s):  
Spodoptera Frugiperda ◽  
Reference Data ◽  
Dna Barcode ◽  
Fall Armyworm ◽  
First Record ◽  
Molecular Techniques ◽  
Data Sets ◽  
Pest Species ◽  
Maize Crop ◽  
Data Set

AbstractWe report the first detection of Fall Armyworm (FAW), Spodoptera frugiperda (Smith, 1797), in Bhutan. FAW feeds on more than 300 plant species and is a serious pest of many. It has been spreading through Africa since 2016 and Asia since 2018. In Bhutan, this species was first detected in maize fields in the western part of the country in September 2019 and subsequently found infesting maize crop in southern parts of the country in December 2019 and April 2020. Using morphological and molecular techniques the presence of the first invading populations of S. frugiperda in Bhutan is confirmed through this study. We present an updated reference DNA barcode data set for FAW comprising 374 sequences, which can be used to reliably identify this serious pest species, and discuss some of the reasons why such compiled reference data sets are necessary, despite the publicly availability of the underlying data. We also report on a second armyworm species, the Northern Armyworm, Mythimna separata (Walker, 1865), in rice, maize and other crops in eighteen districts of Bhutan.

Is Phasmarhabditis papillosa (Nematoda: Rhabditidae) a possible biological control agent against the Spanish slug, Arion vulgaris (Gastropoda: Arionidae)?

Nematology ◽  
2020 ◽  
pp. 1-9
Author(s):  
Žiga Laznik ◽  
Ivana Majić ◽  
Stanislav Trdan ◽  
Antoinette P. Malan ◽  
Annika Pieterse ◽  
...  
Keyword(s):  
Biological Control ◽  
Laboratory Experiments ◽  
Biological Control Agent ◽  
First Record ◽  
Control Agent ◽  
Molecular Techniques ◽  
Parasitic Nematodes ◽  
Arion Vulgaris ◽  
Potential Use

Summary In the period from August to October 2018, 140 specimens of the Spanish slug, Arion vulgaris, were collected from Podbrezje, Slovenia. Slugs were dissected and examined for the presence of parasitic nematodes within the cadavers. Identification of the nematodes was conducted using morphological and molecular techniques and confirmed the presence of Phasmarhabditis papillosa. This is the first record of P. papillosa from the mollusc host, A. vulgaris. Laboratory experiments aimed at testing the efficacy of P. papillosa against A. vulgaris were conducted using nematodes grown in vivo. Nematodes were applied at concentration rates of 50, 100 and 200 nematodes slug−1, respectively. Three weeks following treatment, the mortality of slugs was confirmed in all treatments (50 nematodes slug−1, 37.4 ± 2.7%; 100 nematodes slug−1, 48.4 ± 2.7%; 200 nematodes slug−1, 50.6 ± 2.7%). However, the pathogenesis of P. papillosa was observed first in the treatments with the lowest nematode dose at 4 days after treatments, while a decrease in the feeding behaviour of slugs was noted first in the treatments with the highest nematode dose. Future opportunities for the potential use of P. papillosa as a biological control agent against slugs are discussed. This is the first report of P. papillosa from Slovenia, and of its virulence against A. vulgaris.

First record of the tomato leafminer,Tuta absoluta(Meyrick) (Lepidoptera: Gelechiidae) in Sudan

EPPO Bulletin ◽  
2012 ◽  
Vol 42 (2) ◽  
pp. 325-327 ◽  
Author(s):  
E. S. I. Mohamed ◽  
M. E. Mohamed ◽  
S. A. Gamiel
Keyword(s):  
First Record ◽  
Tuta Absoluta ◽  
Tomato Leafminer

scholarly journals Exploring the Mechanisms of the Spatiotemporal Invasion of Tuta absoluta in Asia

Agriculture ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 124 ◽  
Author(s):  
Ritter A. Guimapi ◽  
Ramasamy Srinivasan ◽  
Henri E. Tonnang ◽  
Paola Sotelo-Cardona ◽  
Samira A. Mohamed
Keyword(s):  
High Speed ◽  
Real Life ◽  
Initial Point ◽  
The Philippines ◽  
Control Measures ◽  
Tuta Absoluta ◽  
Invasive Pest ◽  
Spread Pattern ◽  
People Movement ◽  
Not At Risk

International crop exchange always brings the risk of introducing pests to countries where they are not yet present. The invasive pest Tuta absoluta (Meyrick 1917), after taking just a decade (2008–2017) to invade the entire Africa continent, is now continuing its expansion in Asia. From its first detection in Turkey (2009), the pest has extended its range of invasion at a very high speed of progression to the southeast part of Asia. This study adopted the cellular automata modelling method used to successfully predict the spatiotemporal invasion of T. absoluta in Africa to find out if the invasive pest is propagating with a similar pattern of spread in Asia. Using land cover vegetation, temperature, relative humidity and the natural flight ability of Tuta absoluta, we simulated the spread pattern considering Turkey as the initial point in Asia. The model revealed that it would take about 20 years for the pest to reach the southeast part of Asia, unlike real life where it took just about 10 years (2009–2018). This can be explained by international crop trade, especially in tomatoes, and movement of people, suggesting that recommendations and advice from the previous invasion in Europe and Africa were not implemented or not seriously taken into account. Moreover, some countries like Taiwan and the Philippines with suitable environmental condition for the establishment of T. absoluta are not at risk of natural invasion by flight, but quarantine measure must be put in place to avoid invasion by crop transportation or people movement. The results can assist policy makers to better understand the different mechanisms of invasion of T. absoluta in Asia, and therefore adjust or adapt control measures that fit well with the dynamic of the invasive pest observed.

First record of an entomopathogenic fungus of tomato leafminer, Tuta absoluta (Meyrick) in Tanzania

2019 ◽  
Vol 29 (7) ◽  
pp. 626-637 ◽  
Author(s):  
Never Zekeya ◽  
Madundo Mtambo ◽  
Srinivasan Ramasamy ◽  
Musa Chacha ◽  
Patrick A. Ndakidemi ◽  
...  
Keyword(s):  
Entomopathogenic Fungus ◽  
First Record ◽  
Tuta Absoluta ◽  
Tomato Leafminer

scholarly journals Não preferência para oviposição e alimentação por Tuta absoluta (Meyrick) em genótipos de tomateiro

2012 ◽  
Vol 79 (4) ◽  
pp. 541-548
Author(s):  
A.L. Boiça Junior ◽  
D.B. Bottega ◽  
A.L. Lourenção ◽  
N.E.L. Rodrigues
Keyword(s):  
Solanum Lycopersicum ◽  
Tuta Absoluta ◽  
Santa Cruz ◽  
Solanum Lycopersicum L

Este trabalho buscou selecionar genótipos de tomateiro resistentes a Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae), dos tipos não preferência para oviposição e alimentação, em testes com e sem chance de escolha. As espécies utilizadas foram Solanum lycopersicum L. (cv. Santa Clara, os híbridos: Saladete Italiano Ty Tyna, Santa Cruz Débora Ty, Salada Lumi, Saladete Italiano Andrea Victory e Santa Cruz Ty Carina Ty), S. habrochaites S. Knapp & D.M Spooner (linhagens PI 134417 e PI 134418) e S. pimpinellifolium L. (linhagens NAV 1062 e PI 126931). Nos testes de não preferência para oviposição, foram contados o número de ovos por planta às 24, 48 e 72 horas, após a liberação dos adultos. Para os testes de não preferência para alimentação, foram avaliados a atratividade das larvas pelos genótipos em cada repetição a 1, 3, 5, 10, 30, 60, 120, 360, 720 e 1440 minutos, após a liberação das larvas e massa consumida pelas larvas. Constatou-se que os genótipos de tomateiro avaliados não apresentam resistência dos tipos não preferência para oviposição. Já o genótipo PI 134417 apresenta resistência do tipo não preferência para alimentação.

Checklist of decapods (Crustacea) from the coast of the São Paulo state (Brazil) supported by integrative molecular and morphological data: I. Infraorder Caridea: families Hippolytidae, Lysmatidae, Ogyrididae, Processidae and Thoridae

Zootaxa ◽  
2018 ◽  
Vol 4370 (1) ◽  
pp. 76 ◽  
Author(s):  
MARIANA TEROSSI ◽  
ALEXANDRE O. ALMEIDA ◽  
RAQUEL C. BURANELLI ◽  
ANTONIO L. CASTILHO ◽  
ROGÉRIO C. COSTA ◽  
...  
Keyword(s):  
First Record ◽  
Molecular Data ◽  
Color Pattern ◽  
Sao Paulo ◽  
South Atlantic ◽  
Molecular Techniques ◽  
Morphological Data ◽  
São Paulo ◽  
Paulo State ◽  
São Paulo State

The current checklist is the result of a long-term multidisciplinary project which combined molecular techniques (mitochondrial DNA markers) and morphological analyses of adult specimens for an accurate and detailed identification of the total biodiversity of decapod crustaceans from marine and coastal (including estuaries) environments of São Paulo State (Brazil). This is the first of a series of reports and providing a checklist of caridean shrimps of the families Hippolytidae (5 spp.), Lysmatidae (6 spp.), Ogyrididae (2 spp.), Processidae (5 spp.) and Thoridae (1 sp.). We collected material of 13 species out of 19 recorded, with sequences of cytochrome oxidase subunit I - barcode region and 16S generated from 10 species. The previous record of Lysmata cf. intermedia for São Paulo is actually L. jundalini, as the first record in São Paulo/South Atlantic waters. The molecular data were helpful to confirm the identification of some species, as the occurrence of L. wurdemanni which is confirmed in the South Atlantic Ocean based on morphological, color pattern and molecular data. 

scholarly journals First report on mermithid parasitism (Enoplea: Mermithidae) in a Southeast Asian spider (Araneae: Araneidae)

2019 ◽  
Vol 56 (2) ◽  
pp. 157-167 ◽  
Author(s):  
O. Košulič ◽  
Š. Mašová
Keyword(s):  
Southeast Asia ◽  
First Record ◽  
Southeast Asian ◽  
Species Level ◽  
Morphological Features ◽  
Nematode Infection ◽  
First Report ◽  
Host Parasite

SummaryDetails about the record of a juvenile mermithid roundworm parasitizing the bark spider Caerostris sumatrana Strand, 1915 from Thailand are presented. The morphology and ecology of both organisms is discussed. Morphological features suggest this juvenile nematode belongs to the genus cf. Aranimermis. Due to the subadult stage of parasite, identification to species-level was not possible. This first report of a nematode infection in C. sumatrana with several recent findings from other studies significantly adds to the current inventory of mermithids parasitizing spiders. Moreover, our finding is among the first record of this host-parasite interaction from Southeast Asia.

scholarly journals Molecular methods for detection of viral diseases in tomato (Solanum lycopersicum)

2021 ◽  
Vol 63 (9) ◽  
pp. 48-53
Author(s):  
Tuan Nam Vu ◽  
◽  
Duc Ha Chu ◽  
Tien Dung Le ◽  
◽  
...  
Keyword(s):  
Solanum Lycopersicum ◽  
Viral Disease ◽  
Molecular Techniques ◽  
Detection Methods ◽  
Viral Diseases ◽  
Tomato Production ◽  
Early Stages ◽  
Solid Foundation ◽  
Production Areas ◽  
Specific Symptoms

The viral disease is one of the biggest challenges in tomato (Solanum lycopersicum) production. Although disease management is highlighted and seriously controlled in whole production areas, there are still many difficulties due to the lack of understanding of the symptoms, pathogens, and detection methods to control the viral disease at early stages. In this review, the authors summarised some major viral diseases in tomato plants with a brief of virus characteristics and their specific symptoms. Then the authors discussed the application of the molecular techniques, with a focus on loop-mediated isothermal amplification (LAMP), for the detection of tomato viral diseases in the early stages of infection, thereby providing a solid foundation for further improvement of virus-free tomato production

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