EFFECT OF TEMPERATURE DEGREES ON THE BIOLOGICAL ASPECTS AND THERMAL REQUIREMENTS OF THERIDION INCANESCENS SIMON (ARANEAE: THERIDIIDAE) REARED ON SPODOPTERA LITTORALIS LARVAE

Document Type : Original Article

Author

Plant Protection Research Institute, Agric. Research Center, Giza, 12618, Egypt

Abstract

Temperature degrees affect the development, growth, survival, and reproduction of spiders especially Theridion incanescens. Thermal effect and requirements of Theridion incanescens Simon, 1890 and the developmental stages was studied under laboratory conditions at 25 & 30°C and 60-70% RH. Spider individuals were fed every two days. First and second spiderlings were fed on the first instar larvae of Spodoptera littoralis (Boisduval). Later spiderlings were fed on 2nd larval instar of S. littoralis. Males and females reached maturity at the fifth spiderling after 36.08 & 26.83 and 34.14 & 25.25 days at 25 and 30°C,respectively.  Adult longevity, life span, fecundity of female and food consumption were reported.

Keywords

Menoufia Journal of Plant Protection
Volume 2, Issue 1 - Serial Number 1
January and February 2017
Pages 49-55

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