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- W1964003973 abstract "We present a field test of the genetically based performance trade-off hypothesis for resource specialization in a population of the moth Rothschildia lebeau whose larvae primarily feed on three host plant species. Pairwise correlations between growth vs. growth, survival vs. survival and growth vs. survival across the different hosts were calculated, using families (sibships) as the units of analysis. Of 15 pairwise correlations, 14 were positive, 5 significantly so and none were negative. The same pattern was found using complementary growth and survival data from the laboratory. Overall, we found no evidence of negative genetic correlations in cross-host performance that would be indicative of performance trade-offs in this population. Rather, variation among families in performance appears to reflect 'general vigour' whereby families that perform well on one host perform well across multiple hosts. We discuss the implications of positive genetic correlations in cross-host performance in terms of the ecology and evolution of host range. We argue that this genetic architecture facilitates colonization of novel hosts and recolonization of historical hosts, therefore contributing to host shifts, host range expansions, biological invasions and introductions, and host ranges that are regionally broad but locally narrow." @default.
- W1964003973 created "2016-06-24" @default.
- W1964003973 creator A5001292752 @default.
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- W1964003973 date "2009-03-13" @default.
- W1964003973 modified "2023-10-17" @default.
- W1964003973 title "Resource specialization in a phytophagous insect: no evidence for genetically based performance trade‐offs across hosts in the field or laboratory" @default.
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- W1964003973 doi "https://doi.org/10.1111/j.1420-9101.2009.01694.x" @default.
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