Biological control ofMythimna separata [Lep.: noctuidae] in New Zealand and its bearing on biological control strategy |
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Authors: | A. I. Mohyuddin S. Shah |
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Affiliation: | (1) Pakistan Station, Commonwealth Institute of Biological Control, Rawalpindi, Pakistan;(2) Present address: BAL, Mostyn and Giram Estates, Sabah, Malaysia |
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Abstract: | A survey of parasites ofAgrotis spp. was carried out in Pakistan to find promising species for trial against noctuids especiallyAgrotis spp. andMythimna separata (Walker) in New Zealand. The parasites recorded wereApanteles ruficrus Haliday,Macrocentrus collaris Spinola,Periscepsia carbonaria Panzer,Turanogonia smirnovi,Rohdain,Ctenichneumon panzeri Wesmael andAnthrax sp. All exceptAnthrax sp. were supplied to New Zealand whereA. ruficrus andM. collaris were released in large numbers.A. ruficrus became established and is giving excellent control ofM. separata resulting in enormous economic gains. Recently it has also been recovered fromAgrotis spp. This example of biological control is significant in thatM. separata has been controlled by a parasite that was previously known from it in New Zealand. The specific status of the “A. ruficrus” already present in New Zealand requires investigation. |
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