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Estimation of the parasitism byAnagrus nr.flaveolus Waterhouse [Hymenoptera, mymaridae]

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Abstract

A method was proposed to estimate the parasitism of Delphacid eggs by the MymaridAnagrus nr.flaveolus.

In calculation of percentage parasitism, apparently normal host eggs with eye spots and yellow eggs containing parasite larvae alone were used. A correction to raw data was done in consideration of the difference in duration between the two categories mentioned.

Résumé

Une méthode est proposée pour évaluer le parasitisme des œufs de Delphacides par le Myrmaride,Anagrus nr.flaveolus. Pour le calcul du pourcentage de parasitisme, les œufs de l'hôte apparemment normaux présentant les taches oculaires (œufs de la catégorieb) et les œufs jaunes renfermant des larves parasites (œufs de la catégoriec) sont seuls pris en considération. Pour tenir compte de la différence de durée entre ces deux catégories, on opère une correction des données brutes et on obtient les formules suivantes, en désignant par x le nombre d'œufs de la catégorieb et par y ie nombre d'œufs de la catégoriec:

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Authors and Affiliations

  1. Shikoku Agricultural Experiment Station, Zentûzi, Kagawa Prefecture, Japan

    Akio Ôtake

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  1. Akio Ôtake
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Ôtake, A. Estimation of the parasitism byAnagrus nr.flaveolus Waterhouse [Hymenoptera, mymaridae]. Entomophaga 15, 83–92 (1970). https://doi.org/10.1007/BF02371626

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  • DOI: https://doi.org/10.1007/BF02371626

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