Isaria fumosorosea and metarhizium anisopliae for controlling atteva sciodoxa (lepidoptera: yponomeutidae) a pest of eurycoma longifolia

Rozihawati Z., . and Sajap A. S., . and Omar D., . and Lau W. H., . Isaria fumosorosea and metarhizium anisopliae for controlling atteva sciodoxa (lepidoptera: yponomeutidae) a pest of eurycoma longifolia. pp. 84-91. ISSN 0128-1283

Isaria fumosorosea and Metarhizium anisopliae for controlling Atteva sciodoxa (Lepidoptera: Yponomeutidae) a pest of Eurycoma longifolia. Tiger moth Atteva sciodoxa (Lepidoptera: Yponomeutidae) is a major pest of tongkat ali Eurycoma longifolia (Simaroubaceae). To find a safe and effective method for controlling the pest two indigenous entomopathogenic fungi Isaria fumosorosea and Metarhizium anisopliae isolated from bagworms Pteroma pendula (Lepidoptera: Psychidae) were bioassayed against the pest. The larvae were separately sprayed with concentrations of 1 102 to 1 105 conidia mL-1 of each fungal isolate. Both fungi were pathogenic to third instar larvae of A. sciodoxa. However M. anisopliae was more virulent than I. fumosorosea. The median effective concentrations for M. anisopliae and I. fumosorosea were 4.23 103 and 8.24 104 conidia mL-1 respectively. The median infective times ranged from 4.3 to 10.3 days for M. anisopliae and 7.6 to 16.3 days for I. fumosorosea. Metarhizium anisopliae killed 48 to 88 larvae while I. fumosorosea 26 to 62 larvae for the lowest and highest concentrations respectively 10 days after treatment. Spraying of M. anisopliae at 2 107 conidial mL-1 suspension reduced the population of A. sciodoxa attacking 2-year-old saplings up to 89 7 days after treatment. This study indicates the potential of M. anisopliae for controlling A. sciodoxa.

Full text available from: Official URL: http://www.frim.gov.my/v1/JTFSOnline/jtfs/v26n1/84...

Abstract

Isaria fumosorosea and Metarhizium anisopliae for controlling Atteva sciodoxa (Lepidoptera: Yponomeutidae) a pest of Eurycoma longifolia. Tiger moth Atteva sciodoxa (Lepidoptera: Yponomeutidae) is a major pest of tongkat ali Eurycoma longifolia (Simaroubaceae). To find a safe and effective method for controlling the pest two indigenous entomopathogenic fungi Isaria fumosorosea and Metarhizium anisopliae isolated from bagworms Pteroma pendula (Lepidoptera: Psychidae) were bioassayed against the pest. The larvae were separately sprayed with concentrations of 1 102 to 1 105 conidia mL-1 of each fungal isolate. Both fungi were pathogenic to third instar larvae of A. sciodoxa. However M. anisopliae was more virulent than I. fumosorosea. The median effective concentrations for M. anisopliae and I. fumosorosea were 4.23 103 and 8.24 104 conidia mL-1 respectively. The median infective times ranged from 4.3 to 10.3 days for M. anisopliae and 7.6 to 16.3 days for I. fumosorosea. Metarhizium anisopliae killed 48 to 88 larvae while I. fumosorosea 26 to 62 larvae for the lowest and highest concentrations respectively 10 days after treatment. Spraying of M. anisopliae at 2 107 conidial mL-1 suspension reduced the population of A. sciodoxa attacking 2-year-old saplings up to 89 7 days after treatment. This study indicates the potential of M. anisopliae for controlling A. sciodoxa.

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Item Type:	Article
AGROVOC Term:	Biological control
AGROVOC Term:	Isaria
AGROVOC Term:	Metarhizium anisopliae
AGROVOC Term:	Lepidoptera
AGROVOC Term:	Yponomeutidae
AGROVOC Term:	Simaroubaceae
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 06:26
URI:	http://webagris.upm.edu.my/id/eprint/21210

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