Host-plant susceptibility to the carrot fly, Psila rosae. 3. The role of oviposition preferences and larval performance |
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| Authors: | THOMAS DEGEN ERIC STÄDLER P R ELLIS |
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| Institution: | Swiss Federal Research Station for Fruit-Growing, Viticulture and Horticulture, CH-8820 Wädenswil, Switzerland;Horticulture Research International, Wellesbourne, Warwick CV35 9EF, UK |
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| Abstract: | The acceptability of various plant species to ovipositing carrot flies was weakly, but significantly correlated with the host's suitability for larval development. Both adult host-plant preferences and larval performance as determined in laboratory experiments explained a part of the variation in susceptibility among the various test plants observed in the field. Across the whole set of plant species examined, antixenosis contributed more substantially to resistance than antibiosis, while the reverse seemed to be true for carrot cultivars. |
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| Keywords: | Diptera Psilidae Apiaceae host-plant acceptability host-plant suitability antixenosis antibiosis |
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