Lethality of entomopathogenic fungi on Dysdercus peruvianus (Hemiptera: Pyrrhocoridae)
We assessed the pathogenicity and virulence on Dysdercus peruvianus with a strain of Acremonium and one of Scopulariopsis isolated from infected adult D. peruvianus from Mala, Cañete, south of Lima. A strain of Beauveria sp., isolated from Schistocerca piceifrons peruviana from Ayacucho, was also evaluated. Bioassays were conducted on the fourth instar nymphs of D. peruvianus, and the concentrations used were 3,7 x108, 1,9 x108, 9,4 x107 conidia / mL for Beauveria sp., Acremonium sp. and Scopulariopsis sp. respectively. At 20 days after treatment, the highest mortality rates were caused by Beauveria sp. (83,3%) and Acremonium sp. (80%). Scopulariopsis sp. caused a mortality of 23,3%. Acremonium sp. was the more aggressive strain with a lethal time (LT50) of 3,8 days.
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Universidad Nacional Mayor de San Marcos, Facultad de Ciencias Biológicas
2010
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oai:ojs.csi.unmsm:article322020-05-21T22:36:20Z Lethality of entomopathogenic fungi on Dysdercus peruvianus (Hemiptera: Pyrrhocoridae) Letalidad de hongos entomopatogenos sobre Dysdercus peruvianus (Hemiptera: Pirrhocoridae) Falconi, Francesca Flores, Aldo Castellanos, Pedro entomopatógeno Dysdercus Beauveria Acremonium Scopulariopsis arrebiatado. entomopathogenic Dysdercus Beauveria Acremonium Scopulariopsis cotton stainer. We assessed the pathogenicity and virulence on Dysdercus peruvianus with a strain of Acremonium and one of Scopulariopsis isolated from infected adult D. peruvianus from Mala, Cañete, south of Lima. A strain of Beauveria sp., isolated from Schistocerca piceifrons peruviana from Ayacucho, was also evaluated. Bioassays were conducted on the fourth instar nymphs of D. peruvianus, and the concentrations used were 3,7 x108, 1,9 x108, 9,4 x107 conidia / mL for Beauveria sp., Acremonium sp. and Scopulariopsis sp. respectively. At 20 days after treatment, the highest mortality rates were caused by Beauveria sp. (83,3%) and Acremonium sp. (80%). Scopulariopsis sp. caused a mortality of 23,3%. Acremonium sp. was the more aggressive strain with a lethal time (LT50) of 3,8 days. Se evaluó la patogenicidad y virulencia sobre Dysdercus peruvianus de una cepa de Acremonium y una de Scopulariopsis, aisladas de adultos infectados de D. peruvianus procedentes de Mala, Provincia de Cañete. También se evaluó una cepa de Beauveria sp. aislada de Schistocerca piceifrons peruviana procedente de Ayacucho. Los bioensayos se realizaron sobre ninfas del cuarto estadío de D. peruvianus y las concentraciones empleadas fueron 3,7x108, 1,9x108, 9,4x107 conidias/mL para Beauveria sp., Acremonium sp. y Scopulariopsis sp. respectivamente. Veinte días posteriores al tratamiento, los mayores porcentajes de mortalidad los causaron Beauveria sp. (83,3%) y Acremonium sp. (80%). Scopulariopsis sp. causo una mortalidad de 23,3%. Acremonium sp. fue la cepa más agresiva con un tiempo de letalidad (TL50) 3,8 días. Universidad Nacional Mayor de San Marcos, Facultad de Ciencias Biológicas 2010-08-16 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article info:eu-repo/semantics/article application/pdf https://revistasinvestigacion.unmsm.edu.pe/index.php/rpb/article/view/32 10.15381/rpb.v17i2.32 Revista Peruana de Biología; Vol. 17 No. 2 (2010); 225 - 229 Revista Peruana de Biología; Vol. 17 Núm. 2 (2010); 225 - 229 1727-9933 1561-0837 spa https://revistasinvestigacion.unmsm.edu.pe/index.php/rpb/article/view/32/31 Derechos de autor 2010 Francesca Falconi, Aldo Flores, Pedro Castellanos https://creativecommons.org/licenses/by-nc-sa/4.0 |
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Digital |
| author |
Falconi, Francesca Flores, Aldo Castellanos, Pedro |
| spellingShingle |
Falconi, Francesca Flores, Aldo Castellanos, Pedro Lethality of entomopathogenic fungi on Dysdercus peruvianus (Hemiptera: Pyrrhocoridae) |
| author_facet |
Falconi, Francesca Flores, Aldo Castellanos, Pedro |
| author_sort |
Falconi, Francesca |
| title |
Lethality of entomopathogenic fungi on Dysdercus peruvianus (Hemiptera: Pyrrhocoridae) |
| title_short |
Lethality of entomopathogenic fungi on Dysdercus peruvianus (Hemiptera: Pyrrhocoridae) |
| title_full |
Lethality of entomopathogenic fungi on Dysdercus peruvianus (Hemiptera: Pyrrhocoridae) |
| title_fullStr |
Lethality of entomopathogenic fungi on Dysdercus peruvianus (Hemiptera: Pyrrhocoridae) |
| title_full_unstemmed |
Lethality of entomopathogenic fungi on Dysdercus peruvianus (Hemiptera: Pyrrhocoridae) |
| title_sort |
lethality of entomopathogenic fungi on dysdercus peruvianus (hemiptera: pyrrhocoridae) |
| description |
We assessed the pathogenicity and virulence on Dysdercus peruvianus with a strain of Acremonium and one of Scopulariopsis isolated from infected adult D. peruvianus from Mala, Cañete, south of Lima. A strain of Beauveria sp., isolated from Schistocerca piceifrons peruviana from Ayacucho, was also evaluated. Bioassays were conducted on the fourth instar nymphs of D. peruvianus, and the concentrations used were 3,7 x108, 1,9 x108, 9,4 x107 conidia / mL for Beauveria sp., Acremonium sp. and Scopulariopsis sp. respectively. At 20 days after treatment, the highest mortality rates were caused by Beauveria sp. (83,3%) and Acremonium sp. (80%). Scopulariopsis sp. caused a mortality of 23,3%. Acremonium sp. was the more aggressive strain with a lethal time (LT50) of 3,8 days. |
| publisher |
Universidad Nacional Mayor de San Marcos, Facultad de Ciencias Biológicas |
| publishDate |
2010 |
| url |
https://revistasinvestigacion.unmsm.edu.pe/index.php/rpb/article/view/32 |
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