Zur Populationadynamik und Aktivitätszeit der echten Spinnen (Araneida) auf Kleefeldern in Ägypten

  • A. A. Negm
  • M. F. Abou-Ghadir
  • A. G. A. Salman
Article

Abstract

Population trend and time of activity of certain true spiders (Araneida), collected from clover foliage in Egypt

A general survey of spider populations in a clover field at Assiut, Egypt, using the insect sweep net, revealed that their populations underwent violent oscillations throughout the growing season. However, number of spiders increased progressively and reached their peak late in May.

The Salticidae, Tetragnathidae, and Thomisidae were the predominant families. They were amounted to 32, 23, 20 per cent of the total number of specimens collected during this study, respectively. The Clubionidae, Linyphiidae, and Lycosidae were collected in fewer numbers than the first three families.

Data showed a possible occurrence of seasonal and temporal succession in the activity as well as relative population density of the studied spider families. Their maximum period of activity centered around Noon especially during January and February. However, this period was shifted to 8: AM and/or 8: PM during April and May.

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Copyright information

© Verlag Paul Parey 1975

Authors and Affiliations

  • A. A. Negm
    • 1
  • M. F. Abou-Ghadir
  • A. G. A. Salman
  1. 1.Department of Plant Protection, Faculty of AgricultureUniversity of AsssiutAssiutEgypt

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