scholarly journals BIOLOGICAL CONTROL OF SPODOPTERA FRUGIPERDA EGGS USING TELENOMUS REMUS NIXON IN MAIZE-BEAN-SQUASH POLYCULTURE

2012 ◽  
Vol 7 (3) ◽  
pp. 285-292 ◽  
Author(s):  
Antonio GutiA©rrez-MartAnez ◽  
Alfredo Tolon-Becerra ◽  
Xavier B. Lastra-Bravo
Keyword(s):  
Biological Control ◽  
Spodoptera Frugiperda ◽  
Telenomus Remus

scholarly journals Seletividade de diferentes agrotóxicos usados na cultura da soja ao parasitoide de ovos Telenomus remus

2009 ◽  
Vol 39 (8) ◽  
pp. 2293-2300 ◽  
Author(s):  
Eduardo Lima do Carmo ◽  
Adeney de Freitas Bueno ◽  
Regiane Cristina Oliveira de Freitas Bueno ◽  
Simone Silva Vieira ◽  
Alysson Luis Gobbi ◽  
...  
Keyword(s):  
Biological Control ◽  
Spodoptera Frugiperda ◽  
International Organization ◽  
Roundup Ready ◽  
Lepidoptera Noctuidae ◽  
Telenomus Remus

A preservação dos agentes de controle biológico no agroecossistema é indispensável para o sucesso do manejo integrado de pragas. Entretanto, o controle químico de pragas ainda é indispensável em diversas culturas. Nesse contexto, a seletividade dos agrotóxicos aos inimigos naturais deve ser sempre considerada na escolha do melhor produto. Portanto, este estudo verificou o impacto causado por diferentes agrotóxicos na emergência do parasitoide de ovos Telenomus remus Nixon (Hymenoptera: Scelionidae), quando aplicados nas fases de larva e pupa (posturas de 100 a 150 ovos de Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) seis e 10 dias após o parasitismo, respectivamente). Três ensaios, com 11 tratamentos e cinco repetições, foram conduzidos em laboratório com inseticidas, fungicidas e herbicidas, respectivamente. Cada ensaio foi conduzido com 10 tratamentos de agrotóxicos e água como testemunha seletiva. Todos os produtos fitossanitários foram testados nas doses utilizadas na cultura da soja. Ovos de S. frugiperda parasitados por T. remus foram imersos nos tratamentos por cinco segundos e, após secagem total, foram acondicionados em sacos plásticos até a emergência dos adultos dos parasitoides. A viabilidade do parasitismo foi avaliada, e a redução na emergência dos parasitoides foi classificada segundo as normas da International Organization for Biological Control (IOBC). Os resultados mostraram que os inseticidas do grupo dos reguladores de crescimento, como o flufenoxurom, diflubenzurom e metoxifenozido e também os inseticidas imidacloprido + beta-ciflutrina e acefato, foram seletivos às fases imaturas do parasitoide. Espinosade foi classificado como inócuo para larvas de T. remus. Gama-cialotrina foi levemente nocivo para larvas e inócuo para pupas. Bifentrina e clorpirifós foram, respectivamente, levemente nocivo e nocivo para ambas as fases de desenvolvimento de T. remus. Com relação aos herbicidas testados, 2,4-D, S-metolacloro, flumioxazina, dicloreto de paraquate + diurom, dicloreto de paraquate e glifosato (Roundup Transorb®) foram seletivos. Entretanto, glifosato + imazetapir, clomazona, glifosato (Gliz®), glifosato (Roundup Ready®) foram seletivos para a fase de larva e levemente nocivos (classe 2) para a fase de pupa de T. remus. Resultados semelhantes foram obtidos com os fungicidas flutriafol + tiofanato metílico, carbenzadim, trifloxistrobina + tebuconazole e azoxistrobina + ciproconazole, que foram classificados como inócuos. Tiofanato-metílico, tebuconazole e epoxiconazole + piraclostrobina foram levemente nocivos para larvas e inócuos para pupas. Inversamente, epoxiconazole e azoxistrobina foram seletivos para a fase de larva e levemente nocivos para a fase de pupa do parasitoide. Flutriafol foi classificado como levemente nocivo para ambas as fases de T. remus.

scholarly journals Parasitism capacity of Telenomus remus Nixon (Hymenoptera: Scelionidae) on Spodoptera frugiperda (Smith) (Lepidoptera: Noctuidae) eggs

2010 ◽  
Vol 53 (1) ◽  
pp. 133-139 ◽  
Author(s):  
Regiane Cristina Oliveira de Freitas Bueno ◽  
Tatiana Rodrigues Carneiro ◽  
Adeney de Freitas Bueno ◽  
Dirceu Pratissoli ◽  
Odair Aparecido Fernandes ◽  
...  
Keyword(s):  
Biological Control ◽  
Spodoptera Frugiperda ◽  
Type I ◽  
Egg Viability ◽  
Survival Curves ◽  
Control Programs ◽  
Parasitism Rates ◽  
Female Longevity ◽  
Lepidoptera Noctuidae ◽  
Telenomus Remus

This work studied the parasitism capacity of Telenomus remus Nixon (Hymenoptera: Scelionidae) on Spodoptera frugiperda (Smith) (Hymenoptera: Scelionidae) eggs at 15, 20, 25, 28, 31, and 35°C, aiming to use this natural enemy in biological control programs in crops where S. frugiperda was considered pest. The parasitism during the first 24 h was 60.90, 81.65, 121.05, 117.55 and 108.55 parasited eggs per female from egg masses of approximately 150 eggs, at 15, 20, 25, 28 and 31°C, respectively. Females of T. remus reached parasitism higher than 80% at 15, 20, 25, 28 and 31ºC at 5, 27, 8, 2, and 2 days, respectively. At 35ºC, there was no parasitism. The highest parasitism rates occurred at 20, 25, 28 and 31°C. T. remus female longevity varied from 15.7 to 7.7 days from 15 to 31°C. The highest tested temperature (35°C) was inappropriate for T. remus development. At that temperature, female longevity was greatly reduced (1.7±0.02) and egg viability was null. All T. remus survival curves were of type I, which showed an increase in mortality rate with time.

scholarly journals Telenomus remus, a Candidate Parasitoid for the Biological Control of Spodoptera frugiperda in Africa, is already Present on the Continent

Insects ◽  
2019 ◽  
Vol 10 (4) ◽  
pp. 92 ◽  
Author(s):  
Marc Kenis ◽  
Hannalene du Plessis ◽  
Johnnie Van den Berg ◽  
Malick Ba ◽  
Georg Goergen ◽  
...  
Keyword(s):  
Biological Control ◽  
Spodoptera Frugiperda ◽  
Fall Armyworm ◽  
Classical Biological Control ◽  
Egg Parasitoid ◽  
Sub Saharan Africa ◽  
Great Opportunity ◽  
Augmentative Biological Control ◽  
Sub Saharan ◽  
Telenomus Remus

The fall armyworm, Spodoptera frugiperda, a moth originating from tropical and subtropical America, has recently become a serious pest of cereals in sub-Saharan Africa. Biological control offers an economically and environmentally safer alternative to synthetic insecticides that are being used for the management of this pest. Consequently, various biological control options are being considered, including the introduction of Telenomus remus, the main egg parasitoid of S. frugiperda in the Americas, where it is already used in augmentative biological control programmes. During surveys in South, West, and East Africa, parasitized egg masses of S. frugiperda were collected, and the emerged parasitoids were identified through morphological observations and molecular analyses as T. remus. The presence of T. remus in Africa in at least five countries provides a great opportunity to develop augmentative biological control methods and register the parasitoid against S. frugiperda. Surveys should be carried out throughout Africa to assess the present distribution of T. remus on the continent, and the parasitoid could be re-distributed in the regions where it is absent, following national and international regulations. Classical biological control should focus on the importation of larval parasitoids from the Americas.

scholarly journals First report of Telenomus remus parasitizing Spodoptera frugiperda and its field parasitism in southern China

2019 ◽  
Vol 73 ◽  
pp. 95-102 ◽  
Author(s):  
Yong-Lin Liao ◽  
Bin Yang ◽  
Miao-Feng Xu ◽  
Wei Lin ◽  
De-Sen Wang ◽  
...  
Keyword(s):  
Biological Control ◽  
Spodoptera Frugiperda ◽  
Southern China ◽  
Management Strategies ◽  
Fall Armyworm ◽  
Invasive Pest ◽  
Egg Mass ◽  
Molecular Evidence ◽  
Parasitism Rates ◽  
Telenomus Remus

The fall armyworm, Spodoptera frugiperda, is a lepidopteran pest that feeds on many economically important cereal crops such as corn, rice, sorghum, and sugarcane. Native to the Americas, it has become a serious invasive pest in Africa and Asia. Recently, this pest was found in China and has spread quickly across the country. As S. frugiperda will most likely become a major pest in China, Integrated Pest Management strategies, including biological control methods, should be developed to manage its populations. Here, we report the detection of Telenomus remus parasitizing S. frugiperda eggs in cornfields in southern China based on morphological and molecular evidence. Our preliminary surveys indicated that the parasitism rates of T. remus on S. frugiperda could reach 30% and 50% for egg masses and per egg mass, respectively. Further application of T. remus against S. frugiperda in biological control programs are discussed.

scholarly journals First report of Telenomus remus parasitizing Spodoptera frugiperda and its natural parasitism in South China

2019 ◽  
Author(s):  
Yong-Lin Liao ◽  
Bin Yang ◽  
Miao-Feng Xu ◽  
Wei Lin ◽  
De-Sen Wang ◽  
...  
Keyword(s):  
Biological Control ◽  
South China ◽  
Spodoptera Frugiperda ◽  
Management Strategies ◽  
Invasive Pest ◽  
Egg Mass ◽  
Molecular Evidence ◽  
Parasitism Rates ◽  
Telenomus Remus ◽  
Natural Parasitism

AbstractThe fall armyworm, Spodoptera frugiperda, is a lepidopteran pest that feeds on many economically important cereal crops such as corn, rice, sorghum, and sugarcane. Native to the Americas, it has become a serious invasive pest in Africa and Asia. Recently, this pest was found invaded China and has spread exceptionally fast across the country. As S. frugiperda will most likely become a major pest in China, Integrated Pest Management strategies, including biological control methods, should be developed to win the battle against it. Here, we report the detection of Telenomus remus parasitizing S. frugiperda eggs in cornfields in South China based on morphological and molecular evidence. Our preliminary surveys indicated that the natural parasitism rates of T. remus on S. frugiperda could reach 30% and 50% for egg masses and per egg mass, respectively. Further application of T. remus against S. frugiperda in biological control programs are discussed.

scholarly journals Integrative taxonomy and phylogeography of Telenomus remus (Scelionidae), with the first record of natural parasitism of Spodoptera spp. in Brazil

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Ana P. G. S. Wengrat ◽  
Aloisio Coelho Junior ◽  
Jose R. P. Parra ◽  
Tamara A. Takahashi ◽  
Luis A. Foerster ◽  
...  
Keyword(s):  
Biological Control ◽  
Mitochondrial Gene ◽  
First Record ◽  
Mass Rearing ◽  
Classical Biological Control ◽  
Egg Parasitoid ◽  
Integrative Approach ◽  
Agricultural Pests ◽  
Telenomus Remus ◽  
Natural Parasitism

AbstractThe egg parasitoid Telenomus remus (Hymenoptera: Scelionidae) has been investigated for classical and applied biological control of noctuid pests, especially Spodoptera (Lepidoptera: Noctuidae) species. Although T. remus was introduced into Brazil over three decades ago for classical biological control of S. frugiperda, this wasp has not been recorded as established in corn or soybean crops. We used an integrative approach to identify T. remus, combining a taxonomic key based on the male genitalia with DNA barcoding, using a cytochrome c oxidase subunit I mitochondrial gene fragment. This is the first report of natural parasitism of T. remus on S. frugiperda and S. cosmioides eggs at two locations in Brazil. We also confirmed that the T. remus lineage in Brazil derives from a strain in Venezuela (originally from Papua New Guinea and introduced into the Americas, Africa, and Asia). The occurrence of T. remus parasitizing S. frugiperda and S. cosmioides eggs in field conditions, not associated with inundative releases, suggests that the species has managed to establish itself in the field in Brazil. This opens possibilities for future biological control programs, since T. remus shows good potential for mass rearing and egg parasitism of important agricultural pests such as Spodoptera species.

scholarly journals Global Habitat Suitability of Spodoptera frugiperda (JE Smith) (Lepidoptera, Noctuidae): Key Parasitoids Considered for Its Biological Control

Insects ◽  
2021 ◽  
Vol 12 (4) ◽  
pp. 273
Author(s):  
Ghislain T. Tepa-Yotto ◽  
Henri E. Z. Tonnang ◽  
Georg Goergen ◽  
Sevgan Subramanian ◽  
Emily Kimathi ◽  
...  
Keyword(s):  
Biological Control ◽  
Spodoptera Frugiperda ◽  
Habitat Suitability ◽  
Learning Algorithm ◽  
Global Scale ◽  
Congo Basin ◽  
Eastern Africa ◽  
Cotesia Marginiventris ◽  
Coastal Belt ◽  
Eastern Australia

The present study is the first modeling effort at a global scale to predict habitat suitability of fall armyworm (FAW), Spodoptera frugiperda and its key parasitoids, namely Chelonus insularis, Cotesia marginiventris,Eiphosoma laphygmae,Telenomus remus and Trichogramma pretiosum, to be considered for biological control. An adjusted procedure of a machine-learning algorithm, the maximum entropy (Maxent), was applied for the modeling experiments. Model predictions showed particularly high establishment potential of the five hymenopteran parasitoids in areas that are heavily affected by FAW (like the coastal belt of West Africa from Côte d’Ivoire (Ivory Coast) to Nigeria, the Congo basin to Eastern Africa, Eastern, Southern and Southeastern Asia and some portions of Eastern Australia) and those of potential invasion risks (western & southern Europe). These habitats can be priority sites for scaling FAW biocontrol efforts. In the context of global warming and the event of accidental FAW introduction, warmer parts of Europe are at high risk. The effect of winter on the survival and life cycle of the pest in Europe and other temperate regions of the world are discussed in this paper. Overall, the models provide pioneering information to guide decision making for biological-based medium and long-term management of FAW across the globe.

Virulence and Genetic Characterization of Six Baculovirus Strains Isolated From Different Populations of Spodoptera Frugiperda (Lepidoptera: Noctuidae)

2021 ◽  
Author(s):  
Ingrid Zanella-Saenz ◽  
Elisabeth A. Herniou ◽  
Jorge E. Ibarra ◽  
Ma.Cristina Del Rincón-Castro ◽  
Ilse Alejandra Huerta-Arredondo
Keyword(s):  
Biological Control ◽  
Cell Cultures ◽  
Spodoptera Frugiperda ◽  
Fall Armyworm ◽  
The United States ◽  
Infection Mechanisms ◽  
Different Populations

Abstract Fall armyworm (FAW), Spodoptera frugiperda (Smith, 1797), is a polyphagous, voracious, and economically important agricultural pest. Biological control of FAW is a strategy that must be further explored. This study evaluated six baculovirus strains isolated from infected FAW larvae from Mexico, Argentina, Honduras, and the United States. Five alphabaculoviruses (SfNPV-An2, SfNPV-Arg, SfNPV-Fx, SfNPV-Ho and SfNPV-Sin) and one betabaculovirus (SfGV-RV), were tested against FAW larvae, showing a wide diversity of virulence levels among strains when their estimated LC50s were compared, being SfNPVArg, SfNPV-Ho and SfNPV-Fx more virulent than SfNPV-An 2 , SfNPV-Sin and SfGV-RV. To determine any virulence difference in vitro studies of these isolates, Sf9 cell cultures were used. Interestingly, only ODVs from four of the test SfNPV strains showed infectivity on Sf9 cell cultures, and some differences in virulence were observed. Genomic restriction analyses and partial sequences of lef-8, lef-9 , and polh/granulin genes showed little variability among alphabaculoviruses, both, among them and with previously reported sequences. However, sequences from SfGV-RV were closer to previously reported sequences from the SfGVVG008 strain than the SfGV-Arg and SfGV-VG014 strains. The great difference in the in vivo virulence was not correlated with great similarity among the isolates. The characterization of these six baculoviruses isolates offers the basis for exploring their potential as biological control agents against S. frugiperda, as well the initial studies on their specific infection mechanisms, evolution, and ecology.

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