scholarly journals Effectiveness of Beauveria bassiana (Bals.) Vuill. and Metarhizium anisopliae (Metsch.) (Deuteromycotina: Hyphomycetes) as Biological Control Agents of the Onion Thrips, Thrips tabaci Lind.

2017 ◽  
Vol 8 (7) ◽  
pp. 319-323
Author(s):  
M. El-Sheikh
Keyword(s):  
Biological Control ◽  
Beauveria Bassiana ◽  
Metarhizium Anisopliae ◽  
Thrips Tabaci ◽  
Biological Control Agents ◽  
Onion Thrips

scholarly journals Pathogenicity of commercial entomopathogenic fungal strains on the avocado seed borer (ASB), Heilipus lauri (Coleoptera: Curculionidae) under laboratory conditions

2020 ◽  
Vol 40 (4) ◽  
pp. 1059-1067 ◽  
Author(s):  
Andrea P. Clavijo ◽  
Claudia M. Holguin
Keyword(s):  
Biological Control ◽  
Beauveria Bassiana ◽  
Metarhizium Anisopliae ◽  
Fold Increase ◽  
Fruit Intake ◽  
Initiation Time ◽  
Biological Control Agents ◽  
Direct Inoculation ◽  
Potential Use ◽  
Avocado Seed

Abstract The avocado seed borer, (ASB) Heilipus lauri Boheman 1845 (Coleoptera: Curculionidae) is an official quarantine pest limiting avocado production and fruit exports from Colombia to pest-free countries. To provide alternatives to manage ASB, the objective of this study was to determine the potential use of commercial strains of Beauveria bassiana and Metarhizium anisopliae as biological control agents of this pest. Pathogenicity of the strains was evaluated by complete immersion of the insect in a spore solution (direct inoculation) or by insect contact with inoculated fruit (indirect inoculation). The B. bassiana strain caused higher mortality (DF = 3, F = 25.7, P = 0.0002), showing an almost eight-fold increase, 55% and 79% mortality, for both concentrations used, 2.5 × 108 spores/mL or 2.5 × 109 spores/mL, respectively. Additionally, the B. bassiana strain showed shorter median survivorship using direct inoculation (15.8 to 8.7 days), a longer delay in the feeding initiation time (50 h), and a decrease in the fruit intake (Anti-feeding index above 50) after indirect inoculation. To our knowledge, this is the first report about the pathogenicity of a commercial B. bassiana strain against ASB in Colombia.

scholarly journals Pathogenicity of indigenous strains of three entomopathogenic fungi to the sisal weevil, Scyphophorus acupunctatus (Gyllenhal) (Coleoptera: Curculionidae)

2015 ◽  
Vol 8 (2) ◽  
pp. 46-54
Author(s):  
V.T. Gkounti ◽  
D. Markoyiannaki ◽  
D.Ch. Kontodimas
Keyword(s):  
Biological Control ◽  
Beauveria Bassiana ◽  
Entomopathogenic Fungi ◽  
Metarhizium Anisopliae ◽  
Fungal Species ◽  
Life Stages ◽  
Biological Control Agents ◽  
Isaria Fumosorosea ◽  
Mean Survival Time ◽  
High Pathogenicity

SummaryThe pathogenicity of indigenous isolates of Beauveria bassiana, Metarhizium anisopliae and Isaria fumosorosea was evaluated in the laboratory against larvae and adults of the sisal weevil, Scyphophorus acupunctatus. Inoculation was achieved via immersion of individuals into conidia suspensions of different concentrations. All three fungal species proved high pathogenicity against larvae of the weevil, causing 100% mortality in most of the treatments. Beauveria bassiana caused the highest mortality of the adults (86.67±12%), followed by M. anisopliae (46.67±17.8%) and I. fumosorosea (40±17.5%). Mean survival time also differed significantly among treatments and life stages of the weevil. In total, larvae survived significantly fewer days than adults post infection. Results of the present study indicate the potential of indigenous strains of entomopathogenic fungi as biological control agents against the invasive weevil.

scholarly journals Entomopathogenic fungi of soils of freshwater swamps, tidal lowlands, peatlands, and highlands of South Sumatra, Indonesia

2018 ◽  
Vol 19 (6) ◽  
pp. 2365-2373 ◽  
Author(s):  
AYU SAFITRI ◽  
SITI HERLINDA ◽  
ARUM SETIAWAN
Keyword(s):  
Biological Control ◽  
Beauveria Bassiana ◽  
Entomopathogenic Fungi ◽  
Metarhizium Anisopliae ◽  
Insect Pests ◽  
Vegetation Type ◽  
Tenebrio Molitor ◽  
Soil Samples ◽  
Fungal Isolates

Safitri A, Herlinda S, Setiawan A. 2018. Entomopathogenic fungi of soils of freshwater swamps, tidal lowlands, peatlands, and highlands of South Sumatra, Indonesia. Biodiversitas 19: 2365-2373. Ecosystems of lowlands and highlands in South Sumatra have specific characteristics of soils and vegetations that can affect the availability of entomopathogenic fungi. This study aimed to explore and identify species and to determine inoculum potentials of the entomopathogenic fungi from soils of freshwater swamps, tidal lowlands, peatlands, and highlands. Baiting of entomopathogenic fungi on soil samples used the larvae of Tenebrio molitor. The entomopathogenic fungi species found in this research were Beauveria bassiana and Metarhizium anisopliae. The number of the fungal isolates were 30 isolates consisting of nine isolates of B. bassiana and 21 isolates of M. anisopliae.The highest number of isolates was found in the highland ecosystem (11 isolates) and the lowest was found in peatland ecosystem (4 isolates). The highest percentage average of inoculum potentials of the fungi was found in the high land ecosystem (4.04%) and the lowest one was found in freshwater swamps ecosystem (2.11%). Based on the vegetation type, the soil planted with mustard in Talang Patai-Pagaralam (highland ecosystem) had the highest inoculum potentials (9.33%). These fungi will make an important contribution to the biological control for insect pests in lowland to highland ecosystems in Indonesia.

scholarly journals Selection of Beauveria bassiana (Bals.) Vuill. and Metarhizium anisopliae (Metsch.) Sorok. for the control of the mite Mononychellus tanajoa (Bondar)

2004 ◽  
Vol 61 (6) ◽  
pp. 659-664 ◽  
Author(s):  
Rodrigo Soares Barreto ◽  
Edmilson Jacinto Marques ◽  
Manoel Guedes Corrêa Gondim Jr. ◽  
José Vargas de Oliveira
Keyword(s):  
Biological Control ◽  
Beauveria Bassiana ◽  
Metarhizium Anisopliae ◽  
Total Mortality ◽  
Mortality Rates ◽  
Mononychellus Tanajoa ◽  
Control Programs ◽  
Green Mite ◽  
Mortality Percentage ◽  
Selection Of

The green mite, Mononychellus tanajoa (Bondar) (Acari: Tetranychidae), is considered to be one of the key pests in cassava, Manihot esculenta Crants, leading to considerable field losses. In this study, ten Beauveria bassiana (Bals.) Vuill. and ten Metarhizium anisopliae (Metsch.) Sorok. isolates were evaluated with regard to their potential as biological control agents against adult M. tanajoa females. The total mortality percentage of M. tanajoa caused by B. bassiana ranged from 13.0 to 97.0%, with confirmed mortality rates extending from 9.0 to 91.0% and LT50 varying from 4.2 to 17.0 days. The M. anisopliae isolates showed total mortality percentages ranging from 12.0 to 45.0% with confirmed mortality rates extending from 8.0 to 45.0%, and LT50 varying from 8.6 to 19.8 days. Lethal Concentrations (LC50) of 3.93 × 10(6) conidia mL-1 and 7.44 × 10(8) conidia mL-1 were determined for B. bassiana and M. anisopliae, respectively. B. bassiana isolate 645 was the most efficient, being an alternative for use in biological control programs against the cassava green mite.

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