Rearing of <i>Apanteles chilonis</i> MUNAKATA on the Rice Stem Borer, <i>Chilo suppressalis</i> WALKER, Bred on a Semi-artificial Diet

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  • KAJITA Hiroshi
    Institute of Biological Control, Faculty of Agriculture, Kyushu University

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  • 人工飼料飼育のニカメイチュウによるメイチュウサムライコマユバチの飼育
  • ジンコウ シリョウ シイク ノ ニカメイチュウ ニ ヨル メイチュウサムライコマユバチ ノ シイク

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Abstract

In the present study larvae of the rice stem borer, Chilo suppressalis WALKER which were either bred on a semi-artificial diet or collected in the paddy field, were used to rear a gregarious internal parasite, Apanteles chilonis MUNAKATA to compare the biological characteristics of the parasite. Rearing the parasite on larvae bred on the semi-artificial diet decreased the longevity of adult female, the number of mature eggs in ovaries, the number of eggs laid by a single female and the survival rate. Moreover, either females or males of the parasite were produced more frequently from the host larvae bred on the semi-artificial diet. It is not determined in the present study whether inbreeding of the parasite or the change of the host physiological condition resulted in these deleterious effects.

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