Studies on new isolates of native entomopathogenic fungi from the Argentinean Pampas region affecting grasshopper pest
Abstract Fungi are the most important entomopathogens in the natural regulation of insect populations. They have a wide distribution and significant advantages as biological control agents. Prospecting for new native strains of entomopathogenic fungi in the Pampas region has not yet been carried out...
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Academia Brasileira de Ciências
2024-11-01
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| Series: | Anais da Academia Brasileira de Ciências |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652024000700902&lng=en&tlng=en |
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| author | MICAELA ANAHÍ MANCINI YANINA MARIOTTINI FRANCISCO HORACIO ASTIGUETA CLAUDIA MARINELLI ROSANA CEPEDA MARÍA CELESTE SCATTOLINI SEBASTIÁN ALBERTO PELIZZA |
| author_facet | MICAELA ANAHÍ MANCINI YANINA MARIOTTINI FRANCISCO HORACIO ASTIGUETA CLAUDIA MARINELLI ROSANA CEPEDA MARÍA CELESTE SCATTOLINI SEBASTIÁN ALBERTO PELIZZA |
| author_sort | MICAELA ANAHÍ MANCINI |
| collection | DOAJ |
| description | Abstract Fungi are the most important entomopathogens in the natural regulation of insect populations. They have a wide distribution and significant advantages as biological control agents. Prospecting for new native strains of entomopathogenic fungi in the Pampas region has not yet been carried out. The main objectives of this study were isolating and identifying strains of different species of entomopathogenic fungi that naturally infect grasshopper species in the Pampas region and determining, through laboratory tests, their virulence and pathogenicity on nymphs of the pest grasshopper Dichroplus maculipennis. Furthermore, whether the phylogenetic relationships between Beauveria bassiana isolates would be associated with virulence and pathogenicity or geographical distribution. Thirty-four isolates of entomopathogenic fungi were obtained from different grasshopper species corresponding to eleven sites in three counties in the center of Buenos Aires province. There were 31 isolates of B. bassiana and 3 of Metarhizium genus. These isolates scored 66.6% (LPSc 1443) and 100% (LPSc 1441, LPSc 1445, and LPSc 1476) of mortality against third-instar nymphs of D. maculipennis, and these last cause death at 4.86 ± 0.20, 4.80 ± 0.17 and 5 ± 0.15 MST days, respectively. An association between phylogenetic relationships and geographical distances in B. bassiana was found. |
| format | Article |
| id | doaj-art-9d28762076a54c0eba032da7db2d7b4e |
| institution | OA Journals |
| issn | 1678-2690 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Academia Brasileira de Ciências |
| record_format | Article |
| series | Anais da Academia Brasileira de Ciências |
| spelling | doaj-art-9d28762076a54c0eba032da7db2d7b4e2025-08-20T02:23:11ZengAcademia Brasileira de CiênciasAnais da Academia Brasileira de Ciências1678-26902024-11-0196suppl 310.1590/0001-3765202420240785Studies on new isolates of native entomopathogenic fungi from the Argentinean Pampas region affecting grasshopper pestMICAELA ANAHÍ MANCINIhttps://orcid.org/0000-0002-8021-4425YANINA MARIOTTINIhttps://orcid.org/0000-0002-3987-0412FRANCISCO HORACIO ASTIGUETAhttps://orcid.org/0009-0007-7064-1515CLAUDIA MARINELLIhttps://orcid.org/0000-0003-0669-7702ROSANA CEPEDAhttps://orcid.org/0000-0002-4941-2896MARÍA CELESTE SCATTOLINIhttps://orcid.org/0000-0002-6613-3186SEBASTIÁN ALBERTO PELIZZAhttps://orcid.org/0000-0002-0936-3217Abstract Fungi are the most important entomopathogens in the natural regulation of insect populations. They have a wide distribution and significant advantages as biological control agents. Prospecting for new native strains of entomopathogenic fungi in the Pampas region has not yet been carried out. The main objectives of this study were isolating and identifying strains of different species of entomopathogenic fungi that naturally infect grasshopper species in the Pampas region and determining, through laboratory tests, their virulence and pathogenicity on nymphs of the pest grasshopper Dichroplus maculipennis. Furthermore, whether the phylogenetic relationships between Beauveria bassiana isolates would be associated with virulence and pathogenicity or geographical distribution. Thirty-four isolates of entomopathogenic fungi were obtained from different grasshopper species corresponding to eleven sites in three counties in the center of Buenos Aires province. There were 31 isolates of B. bassiana and 3 of Metarhizium genus. These isolates scored 66.6% (LPSc 1443) and 100% (LPSc 1441, LPSc 1445, and LPSc 1476) of mortality against third-instar nymphs of D. maculipennis, and these last cause death at 4.86 ± 0.20, 4.80 ± 0.17 and 5 ± 0.15 MST days, respectively. An association between phylogenetic relationships and geographical distances in B. bassiana was found.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652024000700902&lng=en&tlng=enBiocontrolentomopathogenic fungiBeauveria bassianaMetarhizium sp.native isolatespathogenicity |
| spellingShingle | MICAELA ANAHÍ MANCINI YANINA MARIOTTINI FRANCISCO HORACIO ASTIGUETA CLAUDIA MARINELLI ROSANA CEPEDA MARÍA CELESTE SCATTOLINI SEBASTIÁN ALBERTO PELIZZA Studies on new isolates of native entomopathogenic fungi from the Argentinean Pampas region affecting grasshopper pest Anais da Academia Brasileira de Ciências Biocontrol entomopathogenic fungi Beauveria bassiana Metarhizium sp. native isolates pathogenicity |
| title | Studies on new isolates of native entomopathogenic fungi from the Argentinean Pampas region affecting grasshopper pest |
| title_full | Studies on new isolates of native entomopathogenic fungi from the Argentinean Pampas region affecting grasshopper pest |
| title_fullStr | Studies on new isolates of native entomopathogenic fungi from the Argentinean Pampas region affecting grasshopper pest |
| title_full_unstemmed | Studies on new isolates of native entomopathogenic fungi from the Argentinean Pampas region affecting grasshopper pest |
| title_short | Studies on new isolates of native entomopathogenic fungi from the Argentinean Pampas region affecting grasshopper pest |
| title_sort | studies on new isolates of native entomopathogenic fungi from the argentinean pampas region affecting grasshopper pest |
| topic | Biocontrol entomopathogenic fungi Beauveria bassiana Metarhizium sp. native isolates pathogenicity |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652024000700902&lng=en&tlng=en |
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