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Zur Wirkung verschiedener Beutearten auf die räuberische Kapazität des NematodenDiplogaster sp. (Rhabdita, Diplogasteridae)

Effect of different kinds of food source on the predation efficiency ofDiplogaster sp. nematode (Rhabdita, Diplogasteridae)

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Abstract

The present investigation was conducted to assess the favorable prey of different vermiform larvae of certain insects (Ceratitis capitata, Musca domestica) and phyto-parasitic nematodes (Pratylenchus zeae, Meloidogyne incognita var. 3) which would exterminated by the predator nematode,Diplogaster sp.

The obtained results indicate thatDiplogaster sp. exteriminated large numbers of prey ofM. incognita var. 3 andP. zeae, followed byC. capitata andM. domestica. The larvae of phytoparasitic nematodes were preferable prey toDiplogaster nematode, than that of insects. The predatious rate on the larvae ofM. incognita, P. zeae, C. capitata andM. domestica was 81.5, 76, 55, and 44%, respectively.

Zusammenfassung

Zwecks Untersuchung der Beutepräferenz und der Effizienz des räuberischen NematodenDiplogaster sp. wurden dessen Adulten mit den Larven zweier pflanzenparasitärer Nematodenarten (Pratylenchus zeae undMeloidogyne incognita var. 3) sowie mit den Larven zweier Fliegenarten (Ceratitis capitata undMusca domestica) zusammen gehalten.

Die Ergebnisse zeigen, daß dieDiplogaster-Nematoden einen großen Teil der Beutetiere fraßen, und zwar in der ReihenfolgeM. incognita, P. zeae, C. capitata undM. domestica. Die beiden phytoparasitären Nematodenarten wurden somit den Insekten-larven vorgezogen. Die Vernichtungsquoten betrugen in dieser Reinhenfolge 81,5-76-55 und 44%.

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Authors and Affiliations

  1. Zoology Dep., Fac. of Science, Menoufia University, Shebin El-Kom, Egypt

    G. Y. Osman & M. A. Taha

  2. Zoology Dep., Girls Coll. for Arts, Science and Education, Ain Shams University, Egypt

    S. E. Ghally

Authors
  1. G. Y. Osman
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  2. S. E. Ghally
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  3. M. A. Taha
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Osman, G.Y., Ghally, S.E. & Taha, M.A. Zur Wirkung verschiedener Beutearten auf die räuberische Kapazität des NematodenDiplogaster sp. (Rhabdita, Diplogasteridae). Anz. Schadlingskde., Pflanzenschutz, Umweltschutz 63, 65–67 (1990). https://doi.org/10.1007/BF01909003

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