Evaluation of the activity of filamentous fungi isolated from soils of the Pampa biome applied in the biological control of Tetranychus urticae (Acari: Tetranychidae) and Polyphagotarsonemus latus (Acari: Tarsonemidae)

2021 ◽  
Vol 85 (1) ◽  
pp. 19-30
Author(s):  
Deise Schossler de Souza ◽  
Amanda Ianael Barth ◽  
Amália Luisa Winter Berté ◽  
Gabriel Lima Bizarro ◽  
Daiane Heidrich ◽  
...  
Keyword(s):  
Biological Control ◽  
Filamentous Fungi ◽  
Tetranychus Urticae ◽  
Polyphagotarsonemus Latus ◽  
Pampa Biome

scholarly journals “Predator-In-First”: A Preemptive Biological Control Strategy for Sustainable Management of Pepper Pests in Florida

2020 ◽  
Vol 12 (18) ◽  
pp. 7816
Author(s):  
Vivek Kumar ◽  
Lucky Mehra ◽  
Cindy L. McKenzie ◽  
Lance S. Osborne
Keyword(s):  
Biological Control ◽  
Pest Management ◽  
Control Strategy ◽  
Frankliniella Occidentalis ◽  
Management Strategies ◽  
Control Program ◽  
Field Conditions ◽  
High Rate ◽  
Polyphagotarsonemus Latus ◽  
Consistent Performance

The early establishment of a biocontrol agent in the production system, whether in the greenhouse, nursery, or field, is essential for the success of the biological control program, ensuring growers’ profitability. In an effort to develop a sustainable pest management solution for vegetable growers in Florida, we explored the application of a preemptive biological control strategy, “Predator-In-First” (PIF), in regulating multiple pepper pests, Bemisia tabaci Gennadius, Frankliniella occidentalis Pergande, and Polyphagotarsonemus latus Banks under greenhouse and field conditions during different growing seasons. In these studies, two bell pepper cultivars (7039 and 7141) and the phytoseiid mite Amblyseius swirskii Athias–Henriot were used as a model system. Pepper seedlings (~8 week) of each cultivar were infested with varying rates of A. swirskii (20 or 40 mites/plant or one sachet/10 plant) and allowed to settle on plant hosts for a week before planting in pots or field beds. Results showed a comparative consistent performance of the treatment with the high rate of phytoseiids (40 mites/plant) in regulating B. tabaci and F. occidentalis populations in greenhouse studies, and B. tabaci and P. latus pests under field conditions. During two fall field seasons, higher marketable yields of 12.8% and 20.1% in cultivar 7039, and 24.3% and 39.5% in cultivar 7141 were observed in the treatment with the high rate of phytoseiids compared to the untreated control, indicating yield benefits of the approach. The outcome of the study is encouraging and demonstrates that PIF can be an important tool for organic vegetable growers and a potential alternative to chemical-based conventional pest management strategies. The advantages and limitations of the PIF approach in Florida pepper production are discussed.

Development and Fecundity of Orius minutus (Hemiptera: Anthocoridae) and O. laevigatus Reared on Tetranychus urticae (Acari: Tetranychidae)

2020 ◽  
Vol 113 (4) ◽  
pp. 1735-1740
Author(s):  
Md Arefur Rahman ◽  
Souvic Sarker ◽  
Eunhye Ham ◽  
Jun-Seok Lee ◽  
Un Taek Lim
Keyword(s):  
Biological Control ◽  
Tetranychus Urticae ◽  
Biological Control Agent ◽  
Predation Rate ◽  
Control Agent ◽  
Hatch Rate ◽  
Polyphagous Predator ◽  
Significant Difference ◽  
Table Analysis ◽  
Tetranychus Urticae Koch

Abstract The polyphagous predator Orius species is a dominant predator of thrips, mites, and aphids. Orius laevigatus (Fieber) is a well-known commercialized and effective biological control agent, whereas Orius minutus (L.) distributed widely over the world has not been commercialized. To assess potentials of developing O. minutus as a commercial biological control agent, we compared the biological parameters of O. minutus with O. laevigatus when reared on mixed stages of Tetranychus urticae Koch at 27.5°C. Nymphal development of O. laevigatus was shorter (11.30 d) than that of O. minutus (12.25 d), but there was no significant difference in survivorship between the two species. Also, no significant difference was found in either the preoviposition or oviposition periods, lifetime fecundity, or longevity between the two species. However, O. minutus eggs had a higher hatch rate (0.77) than O. laevigatus (0.71). In life table analysis, no difference was found in any parameters, i.e., R0, rm, λ, T, and DT, between O. laevigatus and O. minutus in two-tailed t-tests. In a predation bioassay, O. minutus consumed 1.39 times more adult T. urticae in 24 h than did O. laevigatus, although the predation rate on T. urticae eggs was similar between the two species. These results suggest that O. minutus native to Korea could be developed as a biological control agent against T. urticae.

scholarly journals Nuevos hospederos y registros de ácaros fitófagos para Costa Rica: período 2008-2012

1969 ◽  
Author(s):  
Hugo Aguilar ◽  
Pamela Murillo
Keyword(s):  
Costa Rica ◽  
Tetranychus Urticae ◽  
Tetranychus Cinnabarinus ◽  
Polyphagotarsonemus Latus

Se actualizan las especies de ácaros fitófagos identificadas para Costa Rica entre 2008 y 2012. Se procesó el material vegetal provisto por productores, técnicos, estudiantes e interesados en general, así como el recolectado por personal del Laboratorio de Acarología de la Universidad de Costa Rica, y se identificó. Se mencionan 63 nuevas especies en 29 familias de plantas hospedantes, para 5 familias de ácaros fitófagos. Tetranychus urticae, familia Tetranychidae, fue la segunda especie en cuanto a número de hospederos, encontrándose en 12 nuevas plantas. También se hallaron otras especies de la familia, como Eutetranychus banksi, Mononychellus planki, Oligonychus peronis, O.pratensis, O. punicae, O. ununguis, O. yothersi, Paraponychus corderoi, Tetranychus cinnabarinus, T. ludeni, T. mexicanus y 3 especies de este género que no fueron identificadas. Se registran 4 especies de la familia Tenuipalpidae: Brevipalpus californi cus, B. gliricidiae, B. obovatus y B. phoenicis. Dentro de la familia Tarsonemidae, se informa de Phytonemus pallidus, Polyphagotarsonemus latus, con 15 nuevos registros, especie con mayor aporte en asociación con plantas para este nuevo período; se informa también de Steneotarsonemus ananas, asociada con piña. De la familia Eriophyidae, se indica de Abacarus doctus, descrita recientemente como nueva especie para la ciencia y asociada con caña de azúcar en el país y de Calepitrimerus muesebecki, relacionada con aguacate; además 2 especies de eriófidos expuestos, no descritas aún. Retracrus johnstoni, familia Phytoptidae, recolectado de Heliconia latispatha, de la familia Heliconiaceae y primer registro de un ácaro de este género asociado con una planta ajena a la familia Arecaceae. Por último, se expone la descripción del reconocimiento de campo para algunas especies escogidas dentro de las 5 familias estudiadas.

Phytoseiulus persimilis (Acari: Phytoseiidae) Functional Response in the Biological Control of Tetranychus urticae (Acari: Tetranychidae) Eggs on Rose Foliage Discs

2019 ◽  
Vol 54 (3) ◽  
pp. 275 ◽  
Author(s):  
Julio C. Chacón-Hernández ◽  
Ernesto Cerna-Chávez ◽  
Venancio Vanoye-Eligio ◽  
Yisa M. Ocho-Fuentes ◽  
Salvador Ordaz-Silva ◽  
...  
Keyword(s):  
Biological Control ◽  
Functional Response ◽  
Tetranychus Urticae ◽  
Phytoseiulus Persimilis

scholarly journals Functional response of two Neoseiulus species preying on Tetranychus urticae Koch 

2017 ◽  
Vol 22 (7) ◽  
pp. 1059 ◽  
Author(s):  
Yuan Zheng ◽  
Patrick De Clercq ◽  
Zi-Wei Song ◽  
Dun-Song Li ◽  
Bao-Xin Zhang
Keyword(s):  
Biological Control ◽  
Tetranychus Urticae ◽  
Spider Mite ◽  
Rate Coefficient ◽  
Handling Time ◽  
Spider Mites ◽  
Functional Responses ◽  
Combined Use ◽  
Mite Infestations ◽  
Tetranychus Urticae Koch

Neoseiulus californicus and N. cucumeris are both potential candidates for the biological control of key pests in China. Whereas N. californicus has mainly been used to control spider mites, N. cucumeris has been released for the control of thrips and spider mites. To understand the potential of the combined use of N. californicus and N. cucumeris to suppress outbreaks of Tetranychus urticae, the predatory performance of these Neoseiulus species against different stages of T. urticae, either separately or in combination, was evaluated by assessing their functional responses in the laboratory. The values of the attack rate coefficient (α) of N. californicus to each stage of T. urticae exceeded those of N. cucumeris, whereas the handling time (Th) of N. californicus was longer than that of N. cucumeris, except when attacking the larvae of T. urticae. Especially at the higher prey densities, N. cucumeris consumed more eggs per day than N. californicus, whereas N. californicus consumed more larvae. Both predators killed similar numbers of nymphs at each density when tested singly. The searching efficiency of the Neoseiulus species decreased with increasing prey densities, and for all stages of T. urticae, the searching efficiency of the Neoseiulus species tested singly was lower than when they were tested together. The study indicates the potential of mixed releases of N. californicus and N. cucumeris for the management of spider mite infestations.

scholarly journals Efeito do cultivo do mamoeiro (Carica papaya L.) em ambiente protegido sobre a ocorrência de ácaros fitófagos e moscas-brancas

2004 ◽  
Vol 26 (3) ◽  
pp. 441-445 ◽  
Author(s):  
Marineide Rosa Vieira ◽  
Luiz de Souza Correa ◽  
Tatiane Marie Martins Gomes de Castro ◽  
Laura Fernanda Simões da Silva ◽  
Maria de Souza Monteverde
Keyword(s):  
Tetranychus Urticae ◽  
Bemisia Tabaci ◽  
Carica Papaya ◽  
Polyphagotarsonemus Latus

O efeito do cultivo do mamoeiro em ambiente protegido foi estudado em três condições: sem cobertura e em dois telados construídos com tela de propileno branca, com malhas de 2 x 2 mm e 2 x 1 mm. Nessa área foram feitas avaliações na cultivar Baixinho de Santa Amália, contando-se o número de plantas com sintomas de ataque recente, para o ácaro branco Polyphagotarsonemus latus, com sintomas e presença de ácaros, para o ácaro rajado Tetranychus urticae e com presença de adultos ou ninfas nas folhas, no caso das moscas-brancas Trialeurodes sp., Bemisia tabaci biótipo B e uma terceira espécie não identificada. Para moscas-brancas, também foram realizadas contagens de ninfas e exúvias em laboratório. O cultivo em ambiente protegido favoreceu a sobrevivência e o desenvolvimento populacional das espécies estudadas, sendo que algumas possíveis causas são discutidas no texto. Considerando-se que o cultivo protegido pode ser uma boa alternativa para o controle de viroses, como o mosaico do mamoeiro, problema limitante para a cultura, estratégias de manejo de pragas nesses ambientes devem ser desenvolvidas, para viabilizar o seu uso.

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