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Registro Completo |
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
03/10/2022 |
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Data da última atualização: |
13/02/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
GAVA, C. A. T.; LEAL, C. M.; SÁ, A. V. de; PARANHOS, B. A. G. |
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Afiliação: |
CARLOS ALBERTO TUAO GAVA, CPATSA; CLAYTON MOREIRA LEAL, UNEB; ALICIA VIEIRA DE SÁ, UPE; BEATRIZ AGUIAR GIORDANO PARANHOS, CPATSA. |
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Título: |
Selecting thermal tolerant strains of entomopathogenic fungi to control Ceratitis capitata (Wiedeman) in tropical semi-arid conditions. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Biological Control, v. 176, 105062, Dec. 2022. |
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DOI: |
https://doi.org/10.1016/j.biocontrol.2022.105062 |
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Idioma: |
Inglês |
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Conteúdo: |
Although it is usual, using constant temperature to select thermo-tolerant entomopathogen (EF) strains could discard potentially efficient biocontrol agents (BCA). The objectives of this work were to select virulent EF against C. capitata and evaluate the effect of continual and fluctuating temperature on fungal development and virulence. Initial experiments compared the effect of constant temperatures (CT) (20, 25, 30, 35, and 38 ?C) and simulated intraday temperature variation (SIV) (20?38 ?C) over conidial germination, mycelial growth, and insect mortality. Temperatures ? 35 ?C in the CT experiments significantly reduced conidial germination, and the strains of Beauveria bassiana BbLCB81 and BbLCB289 showed the highest conidial germination and mycelial growth. SIV also caused a significant effect, and M. anisopliae MaLCB62 showed the highest conidial germination and mycelial growth. Applying EF strains as toxic baits in CT showed that the highest mortality occurred at 30 ?C, and BbLCB62 and BbLCB289 showed the largest insect mortality at 38 ?C. Survival analysis showed a slight increase in the average survival time (ST50) at 30 ?C. In SIV conditions, MaLCB56 and BbLCB289 were highly virulent. In a field cage experiment at a warmer temperature, BbLCB62 was the most virulent strain according to the M-C test comparing survival curves. However, confirmed accumulated mortality on the 10th day was similar to the moderately tolerant BbLCB289 (Tukey, p < 0.05). During winter, all EF strains showed similar mortality on 10th day (Tukey, p < 0.05), but a significant difference in the survival analysis. EF strains with mild temperature tolerance can be applied in seasons with high temperatures, and BbLCB62 and BbLCB289 were selected as potential biocontrol agents against C. capitata. MenosAlthough it is usual, using constant temperature to select thermo-tolerant entomopathogen (EF) strains could discard potentially efficient biocontrol agents (BCA). The objectives of this work were to select virulent EF against C. capitata and evaluate the effect of continual and fluctuating temperature on fungal development and virulence. Initial experiments compared the effect of constant temperatures (CT) (20, 25, 30, 35, and 38 ?C) and simulated intraday temperature variation (SIV) (20?38 ?C) over conidial germination, mycelial growth, and insect mortality. Temperatures ? 35 ?C in the CT experiments significantly reduced conidial germination, and the strains of Beauveria bassiana BbLCB81 and BbLCB289 showed the highest conidial germination and mycelial growth. SIV also caused a significant effect, and M. anisopliae MaLCB62 showed the highest conidial germination and mycelial growth. Applying EF strains as toxic baits in CT showed that the highest mortality occurred at 30 ?C, and BbLCB62 and BbLCB289 showed the largest insect mortality at 38 ?C. Survival analysis showed a slight increase in the average survival time (ST50) at 30 ?C. In SIV conditions, MaLCB56 and BbLCB289 were highly virulent. In a field cage experiment at a warmer temperature, BbLCB62 was the most virulent strain according to the M-C test comparing survival curves. However, confirmed accumulated mortality on the 10th day was similar to the moderately tolerant BbLCB289 (Tukey, p < 0.05). During winter, all... Mostrar Tudo |
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Palavras-Chave: |
Crescimento e virulência; Temperatura constante versus temperatura variável; Tolerância térmica. |
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Thesagro: |
Beauveria Bassiana; Ceratitis Capitata; Controle Biológico; Inseto; Metarhizium Anisopliae; Mosca das Frutas; Vírus. |
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Thesaurus Nal: |
Biological control; Ceratitis capitata Yoyo virus. |
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Categoria do assunto: |
O Insetos e Entomologia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1147078/1/Selecting-thermal-tolerant-strains-of-entomopathogenic-fungi-to-control-2022.pdf
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Marc: |
LEADER 02852naa a2200313 a 4500
001 2147078
005 2023-02-13
008 2022 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.biocontrol.2022.105062$2DOI
100 1 $aGAVA, C. A. T.
245 $aSelecting thermal tolerant strains of entomopathogenic fungi to control Ceratitis capitata (Wiedeman) in tropical semi-arid conditions.$h[electronic resource]
260 $c2022
520 $aAlthough it is usual, using constant temperature to select thermo-tolerant entomopathogen (EF) strains could discard potentially efficient biocontrol agents (BCA). The objectives of this work were to select virulent EF against C. capitata and evaluate the effect of continual and fluctuating temperature on fungal development and virulence. Initial experiments compared the effect of constant temperatures (CT) (20, 25, 30, 35, and 38 ?C) and simulated intraday temperature variation (SIV) (20?38 ?C) over conidial germination, mycelial growth, and insect mortality. Temperatures ? 35 ?C in the CT experiments significantly reduced conidial germination, and the strains of Beauveria bassiana BbLCB81 and BbLCB289 showed the highest conidial germination and mycelial growth. SIV also caused a significant effect, and M. anisopliae MaLCB62 showed the highest conidial germination and mycelial growth. Applying EF strains as toxic baits in CT showed that the highest mortality occurred at 30 ?C, and BbLCB62 and BbLCB289 showed the largest insect mortality at 38 ?C. Survival analysis showed a slight increase in the average survival time (ST50) at 30 ?C. In SIV conditions, MaLCB56 and BbLCB289 were highly virulent. In a field cage experiment at a warmer temperature, BbLCB62 was the most virulent strain according to the M-C test comparing survival curves. However, confirmed accumulated mortality on the 10th day was similar to the moderately tolerant BbLCB289 (Tukey, p < 0.05). During winter, all EF strains showed similar mortality on 10th day (Tukey, p < 0.05), but a significant difference in the survival analysis. EF strains with mild temperature tolerance can be applied in seasons with high temperatures, and BbLCB62 and BbLCB289 were selected as potential biocontrol agents against C. capitata.
650 $aBiological control
650 $aCeratitis capitata Yoyo virus
650 $aBeauveria Bassiana
650 $aCeratitis Capitata
650 $aControle Biológico
650 $aInseto
650 $aMetarhizium Anisopliae
650 $aMosca das Frutas
650 $aVírus
653 $aCrescimento e virulência
653 $aTemperatura constante versus temperatura variável
653 $aTolerância térmica
700 1 $aLEAL, C. M.
700 1 $aSÁ, A. V. de
700 1 $aPARANHOS, B. A. G.
773 $tBiological Control$gv. 176, 105062, Dec. 2022.
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Embrapa Semiárido (CPATSA) |
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