Generations and reproduction in the predacious miteAmblyseius swirskii Ath.-Hen. (Acari, Phytoseiidae) fed with artificial and natural diets

  • A. Abou-Awad
  • S. A. Elsawi


The predatory mite,Amblyseius swirskii Athias-Henriot successfully went through 5 generations on a diet consisting of pollen grains ofRicinus communis (L.) and a mixture compositing of yeast, milk, cystine, proline, arginine, sucrose, and glucose in the ratio 1∶2 respectively. It was able to return to their natural prey,Tetranychus urticae Koch, in the six generation, apparently unaffected by the artificial-pollen diet. The average reproduction as well as percentage attaining maturity were normal through successive generations indicating no deficiencies in the predator mite biology. Females on both tetranychid prey and pollen diet gave rise to the ratio approximating 2.2 females to 1 male; this ratio was changed to an average 1.7 females and 1 male in females fed on artificial-pollen diet.


Glucose Sucrose Plant Physiology Prolin Plant Pathology 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Die Raubmilbe,Amblyseius swirskii, durchlief erfolgreich 5 Generationen bei Fütterung mit einer Diät, die aus einem Gemisch vonRicinus communis-Pollen (1 Teil) sowie Hefe, Milch, Cystin, Prolin, Arginin, Sucrose und Glukose (2 Teile) bestand. Die Population war imstande, danach (in der 6. Generation) zu ihrer Naturnahrung, der SpinnmilbeTetranychus urticae, zurückzukehren, ohne daß die mittlere Reproduktion und die Maturitätsquote sich veränderten. Das Geschlechterverhältnis war bei Tieren, die mit reinem Pollen ernährt wurden, das gleiche wie bei Ernährung mit Naturbeute (2,2 Weibchen:1 Männchen), während es bei Fütterung mit Pollen-Diätgemisch sich zugunsten der Männchen verschob (1,7 Weibchen:1 Männchen).


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Abou-Awad, B. A.; Reda, A. S.; Elsawi, S. A., 1991: Effects of artificial and natural diets on the development and reproduction of two phytoseiid mitesAmblyseius gossipi andAmblyseius swirskii (Acari: Phytoseiidae). Insect. Sci. Applic. (in press).Google Scholar
  2. Elbanhawy, E. M.; 1975: Biology and feeding behaviour of the predatory miteAmblyseius brazilli (Mesostigmata: Phytoseiidae). Entomophaga20, 353–360.Google Scholar
  3. Kennett, C. E., Hamai, J.; 1980: Oviposition and development in predatious mites fed with artificial and natural diets (Acari: Phytoseiidae). Ent. exp. & appl.28, 116–122.Google Scholar
  4. McMurtry, J. A.;Scriven, G. T., 1962: The use of agar media in transporting and rearing phytoseiid mites. J. Econ. Entomol.55, 412–414.Google Scholar
  5. McMurtry, J. A.;Scriven, G. T.; 1964: Studies on the feeding reproduction, and development ofAmblyseius hibisci (Acarina: Phytoseiidae) on various food substances. Ann. Entomol. Soc. Amer.57, 649–655.Google Scholar
  6. McMurtry, J. A.;Scriven, G. T., 1966: Effects of artificial foods on reproduction and development of four species of phytoseiid mites. Ann. Entomol. Soc. Amer.59, 267–269.Google Scholar
  7. Nasr, A. K.;Elbanhawy, E. M.; 1984: Effect of liquid nutrients on the development and reproduction of the predacious miteAmblyseius gossipi (Mesostigmata: Phytoseiidae). Int. Acarol.10, 235–237.Google Scholar
  8. Ragusa, S.; Swirski, E., 1976: Feeding habits, post-embryonic and adult survival, mating, virility and fecundity of the predacious miteAmblyseius swirksii (Acarina: Phytoseiidae) on some coccids and mealybugs. Israel J. Agric. Res., 380–392.Google Scholar
  9. Rasmy, A. H.;Elbanhawy, E. M., 1975: Biology and predatory efficiency of two phytoseiid mites as affected by long-term pollen feeding. Entomophaga20, 93–95.Google Scholar
  10. Reda, A. S., 1990: The use of artificial and natural diets in rearingAgistemus exsertus (Acari: Stigmaeidae). Ann. Agric. Sci. Mosh.28, 2633–2641.Google Scholar
  11. Shehata, K. K.;Weismann, L., 1972: Rearing the predacious mitePhytoseiulus persimilis Athias-Henriot on artificial diet (Acarina: Phytoseiidae). Biologia Bratislava27, 609–615.Google Scholar
  12. Singh, P., 1977: Artificial diets for insects, mites, and spiders. Plenum Pub. Corp. New York, 594 pp.Google Scholar
  13. Swirski, E.;Amitai, S.;Dorzia, N., 1967: Laboratory studies on the feeding, development and reproduction of the predacious mitesAmblyseius rubini Swirski and Amitai andAmblyseius swirskii Athias (Acarina: Phytoseiidae) on various kinds of food substances. Israel J. agric. Res.17, 101–119.Google Scholar

Copyright information

© Verlag Paul Parey 1992

Authors and Affiliations

  • A. Abou-Awad
    • 1
  • S. A. Elsawi
    • 1
  1. 1.Plant Protection DepartmentNational Research CentreCairoEgypt

Personalised recommendations