Biology, Life Table, and Intrinsic Rate of Increase of Tetranychus urticae1, 3
- 15 March 1976
- journal article
- research article
- Published by Oxford University Press (OUP) in Annals of the Entomological Society of America
- Vol. 69 (2) , 362-364
- https://doi.org/10.1093/aesa/69.2.362
Abstract
The life history of the twospotted spider mite, Tetranychus urticae Koch, was studied in order to construct a life table and to establish an intrinsic rate of increase for use in population management with predators. Completion of life cycle in the laboratory required 7.5 days at 27±1°C and 95±5% RH. Mean generation time was 16.0 days and the quiescent period between deutonymph and active adult for females was 2.4 days. The reproductive rate was 7.97 eggs/♀/day. A life table was constructed to estimate the population dynamics by intrinsic rate of increase (r=0.336), mean generation time (13.6 days) and net reproductive rate (97.4).Keywords
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