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Some factors influencing egg laying and site of oviposition byAphidoletes aphidimyza [Dipt.: Cecidomyiidae]

Abstract

The females of the aphidophagous gall midgeAphidoletes aphidimyza (Rond.) lay their eggs on artificial substrates supplied with aphids and honey-dew. If muslin, parafilm and filter paper were offered simultanously, muslin was preferred for oviposition.

The number of eggs laid on leaves from brussels sprouts decreased with increasing height from the ground (5–25 cm).

In complete darkness, almost no eggs were laid. Oviposition was highest at low light intensity (280 lux). In choice chambers with different light intensities the females laid most of their eggs in the dim chamber.

If light came from above, the lower surface of the leaves was always preferred. With illumination from below, however, the difference in egg numbers between upper and lower surface was not significant.

Résumé

Les femelles de la Cecidomyie aphidiphage,Aphidoletes aphidimyza (Rond.) pondent leurs œufs sur des substrats artificiels portant des pucerons et du miellat. Si on offre simultanément de la mousseline, du parafilm et du papier filtre, la mousseline est préférée. Le nombre d'œufs déposés sur des feuilles de chou de Bruxelles décroît lorsqu'on augmente la distance au sol (5–25 cm). Presque aucune ponte n'a lieu à l'obscurité complète, elle est la plus importante aux faibles intensités lumineuses (280 lux). En chambre de choix avec différentes intensités lumineuses les femelles pondent la plupart de leurs œufs dans la chambre sombre. Si l'éclairement vient du dessus, la face inférieure des feuilles est toujours préférée; par contre, si la lumière est par dessous, il n'y a pas de différences significatives entre les nombres d'œufs sur la face supérieure et sur la face inférieure.

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Mansour, M.H. Some factors influencing egg laying and site of oviposition byAphidoletes aphidimyza [Dipt.: Cecidomyiidae]. Entomophaga 21, 281–288 (1976). https://doi.org/10.1007/BF02371763

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Keywords

  • Light Intensity
  • Filter Paper
  • Gall
  • Plant Pathology
  • Lower Surface