2015
DOI: 10.1111/jeb.12704
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Loss of adaptation following reversion suggests trade‐offs in host use by a seed beetle

Abstract: Experimental evolution has provided little support for the hypothesis that the narrow diets of herbivorous insects reflect trade-offs in performance across hosts; selection lines can sometimes adapt to an inferior novel host without a decline in performance on the ancestral host. An alternative approach for detecting trade-offs would be to measure adaptation decay after selection is relaxed, that is, when populations newly adapted to a novel host are reverted to the ancestral one. Lines of the seed beetle Call… Show more

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Cited by 23 publications
(37 citation statements)
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References 76 publications
(119 reference statements)
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“…Because of the unknown effects of inbreeding on beetle performance, a reversion experiment was performed in which sublines of the lentil lines were switched back to mung bean. All lines continued to perform well on mung bean, but the reversion lines showed lower survival, slower development, and smaller size on lentil after 25–45 generations of reversion (Messina and Durham ). Messina and Durham () proposed two hypotheses to explain these conflicting results.…”
mentioning
confidence: 98%
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“…Because of the unknown effects of inbreeding on beetle performance, a reversion experiment was performed in which sublines of the lentil lines were switched back to mung bean. All lines continued to perform well on mung bean, but the reversion lines showed lower survival, slower development, and smaller size on lentil after 25–45 generations of reversion (Messina and Durham ). Messina and Durham () proposed two hypotheses to explain these conflicting results.…”
mentioning
confidence: 98%
“…All lines continued to perform well on mung bean, but the reversion lines showed lower survival, slower development, and smaller size on lentil after 25–45 generations of reversion (Messina and Durham ). Messina and Durham () proposed two hypotheses to explain these conflicting results. Loss of adaptation to lentil could have simply resulted from genetic drift in the reversion lines: alleles that increased performance on lentil (but were effectively neutral on mung bean) could have been lost by chance.…”
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confidence: 98%
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“…Similarly, understanding why this genetic variation does not always correspond to evolutionary change (here, in the case of a failure of larval viability to evolve), also requires further investigation. It was previously appreciated that C. maculatus adapts rapidly to novel hosts within 10-20 generations (Messina, 1993;Messina & Durham, 2015), but until this study, it was little appreciated how incredibly rapid these evolutionary changes can be.…”
Section: Discussionmentioning
confidence: 99%