Life-history parameters of western flower thrips on susceptible and resistant cucumber genotypes |
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| Authors: | Carmen Soria and Chris Mollema |
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| Institution: | (1) DLO-Centre for Plant Breeding and Reproduction Research (CPRO-DLO), P.O. Box 16, NL-6700 AA Wageningen, The Netherlands;(2) Present address: Estación Experimental La Mayora (C.S.I.C.), 29750 Algarrobo Costa, Málaga, Spain |
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| Abstract: | The life-history parameters reproduction rate, developmental time and age specific survival of the western flower thrips,Frankliniella occidentalis (Pergande) Thysanoptera: Thripidae], were determined on susceptible and resistant cucumber (Cucumis sativus L.) genotypes. Both newly emerged andF. occidentalis females of mixed ages showed a substantial reduction (36 to 50%) of the reproduction rate on all resistant genotypes, in
particular after the second day. On the resistant genotypes 9127 and 9140,F. occidentalis had a prolonged developmental period. This was primarily due to a prolongation of the second larval stage. On all resistant
genotypes,F. occidentalis suffered from high (82 to 97%) preadult mortality, predominantly at the second larval stage. It is conclude that the resistant
genotypes do not cause an immediate intoxication of adult nor preadult thrips stages. |
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| Keywords: | Frankliniella occidentalis Cucumis sativus reproduction survival developmental rate |
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