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Systematic mass rearing and release ofMicroctonus hyperodae (Hym.: Braconidae, Euphorinae), a parasitoid of the argentine stem weevilListronotus bonariensis (Col.: Curculionidae) and records of its establishment in New Zealand

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Abstract

The method whereby equal numbers of seven ecotypes of the parasitoidMicroctonus hyperodae Loan (Hymenoptera: Braconidae, Euphorinae) were reared and released is described along with the reasons for doing so. This was achieved by variably intense rearing effort depending on the number of founder females in that particular ecotype.

The parasitoid was released in three regions of New Zealand as a control agent of theListronotus bonariensis Kuschel (Col.: Curculionidae), a severe pest of New Zealand pastures. It was later recovered from all three regions.

Résumé

Sept écotypes du parasitoïdeMicroctonus hyperodae Loan (Hym.: Braconidae) ont été élevés et lâchés en nombres égaux: la méthode employée est décrite et justifiée. Ceci a été réalisé en modifiant le nombre d'individus élevés en fonction du nombre de femells fondatrices pour chaque écotype particulier.

Le parasitoïde a été lâché dans trois régions de Nouvelle-Zélande comme agent de lutte biologique contreListronotus bonariensis (Col.: Curculionidae), sérieux ravageur des prairies de Nouvelle-Zélande. Il fut retrouvé par la suite dans chacune de ces 3 régions.

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Authors and Affiliations

  1. AgResearch, Canterbury Agriculture and Science Centre, PO Box 60, Lincoln, Canterbury, New Zealand

    S. L. Goldson, M. R. McNeill & J. R. Proffitt

  2. AgResearch, Ruakura Agricultural Centre, Private Bag 3123, Hamilton, New Zealand

    G. M. Barker & P. J. Addison

  3. AgResearch, Invermay Agricultural Centre, Private Bag, Mosgiel, New Zealand

    B. I. P. Barratt & C. M. Ferguson

Authors
  1. S. L. Goldson
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  2. M. R. McNeill
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  3. J. R. Proffitt
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  4. G. M. Barker
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  5. P. J. Addison
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  6. B. I. P. Barratt
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  7. C. M. Ferguson
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Goldson, S.L., McNeill, M.R., Proffitt, J.R. et al. Systematic mass rearing and release ofMicroctonus hyperodae (Hym.: Braconidae, Euphorinae), a parasitoid of the argentine stem weevilListronotus bonariensis (Col.: Curculionidae) and records of its establishment in New Zealand. Entomophaga 38, 527–536 (1993). https://doi.org/10.1007/BF02373087

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  • DOI: https://doi.org/10.1007/BF02373087

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