Age-specific maternal effects interact with larval food supply to modulate life history in Coleomegilla maculata

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dc.contributor.author Vargas, German
dc.contributor.author Michaud, J. P.
dc.contributor.author Nechols, James R.
dc.contributor.author Moreno, Carlos A.
dc.date.accessioned 2014-03-18T19:51:02Z
dc.date.available 2014-03-18T19:51:02Z
dc.date.issued 2014-03-18
dc.identifier.uri http://hdl.handle.net/2097/17235
dc.description.abstract 1. Maternal effects can modify progeny phenotypes to improve survival under variable conditions and may also interact with environment. 2. Four cohorts of C. maculata larvae were reared from four different points in their mothers' reproductive lives (1st, 12th, 24th and 36th oviposition days) and divided into two treatments for rearing; 30 min daily access to eggs of Ephestia kuehniella or ad libitum. 3. Progeny survival was lower on restricted food but increased over the first 12 oviposition days in both treatments, suggesting mothers did not conform to the theoretical norm, i.e., produce their 'best' progeny first. 4. Larval development was delayed on the restricted diet, but there was no effect of oviposition day on total developmental time, although pupation was faster in the final cohort than in the first. 5. The restricted diet amplified a developmental polymorphism evident in both treatments, increasing the percentage of larvae that added or subtracted an instar. The results suggest that mothers employ a mixed strategy and produce subsets of progeny that alternatively adopt an 'optimistic' or 'pessimistic' strategy when facing food limitation; undergo an additional instar to take advantage of any late improvement in the food supply, or forgo an instar and pupate at a small size. 6. A larger percentage of later cohorts pupated after only three instars in both treatments, suggesting that more later hatching progeny are maternally programmed for pessimism, as would be adaptive for larvae exploiting aphid populations in decline. en_US
dc.language.iso en_US en_US
dc.relation.uri http://onlinelibrary.wiley.com/enhanced/doi/10.1111/een.12065/ en_US
dc.rights This is the peer reviewed version of the following article: Vargas, G., Michaud, J. P., Nechols, J. R., & Moreno, C. A. (2014). Age-specific maternal effects interact with larval food supply to modulate life history in Coleomegilla maculate. Ecological Entomology, 39(1), 39-46., which has been published in final form at http://onlinelibrary.wiley.com/enhanced/doi/10.1111/een.12065/ en_US
dc.subject Developmental polymorphism en_US
dc.subject Egg size en_US
dc.subject Fecundity en_US
dc.subject Food limitation en_US
dc.subject Reproduction en_US
dc.title Age-specific maternal effects interact with larval food supply to modulate life history in Coleomegilla maculata en_US
dc.type Article (author version) en_US
dc.date.published 2014 en_US
dc.citation.doi doi:10.1111/een.12065 en_US
dc.citation.epage 46 en_US
dc.citation.issue 1 en_US
dc.citation.jtitle Ecological Entomology en_US
dc.citation.spage 39 en_US
dc.citation.volume 39 en_US
dc.contributor.authoreid jpmi en_US
dc.contributor.authoreid jnechols en_US


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