Adaptation to divergent larval diets in the medfly,<i>Ceratitis capitata</i>

Leftwich, Philip T.; Nash, William G.; Friend, Lucy A.; Chapman, Tracey

doi:10.1111/evo.13113

Cited by 23 publications

(66 citation statements)

References 58 publications

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“…Hence, the egg to adult survival of individuals was unaffected by swapping to the opposite diets and instead showed evidence of an evolved dietary difference, with consistently higher survival in “S” over “A” individuals, as previously described (Leftwich et al. ). This pattern was largely attributable to larval survival, as described below.…”

Section: Resultssupporting

confidence: 76%

“…Importantly, previous research has also documented rapid divergence and local adaptation in response to nutrition, in the same lines as used in this study (Leftwich et al. ).…”

mentioning

confidence: 53%

“…B) (Leftwich et al. ). This pattern appeared to be attributable to both larval and pupal development, as described below.…”

Section: Resultsmentioning

confidence: 99%

“…We built upon a recent study that documented divergence and local adaptation in life‐history traits in medfly (Leftwich et al. ), using the same experimental evolution lines. We chose to measure features of developmental time and survival as direct measures of response to nutritional quality (Nijhout ), at the initiation of selection and at generation 30, as well as adult traits predicted to be influenced by maternal effects, such as body size and male mating success (Nijhout ).…”

mentioning

confidence: 99%

“…The ASG, “A” diet is a high calorie mix of simple carbohydrates, while Starch, “S” comprises a lower calorie, complex carbohydrate diet (Leftwich et al. ). To document the contribution of maternal effects to each of these traits, we conducted reciprocal diet switches between the A and S diets and measured individuals whose parents were raised on their own regime diets or on the opposite diet for 1 or 2 generations prior to testing (high vs low maternal effect treatments, respectively; Fig.…”

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confidence: 99%

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Contribution of maternal effects to dietary selection in Mediterranean fruit flies

et al. 2019

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Individual responses to dietary variation represent a fundamental component of fitness, and nutritional adaptation can occur over just a few generations. Maternal effects can show marked proximate responses to nutrition, but whether they contribute to longer term dietary adaptation is unclear. Here, we tested the hypotheses that maternal effects: (i) contribute to dietary adaptation, (ii) diminish when dietary conditions are constant between generations, (iii) are trait‐specific and (iv) interact with high‐ and low‐quality food. We used experimental evolution regimes in the medfly ( Ceratitis capitata ) to test these predictions by subjecting an outbred laboratory‐adapted population to replicated experimental evolution on either constant high calorie sugar (‘A’) or low‐calorie starch (‘S’) larval diets, with a standard adult diet across both regimes. We measured the contribution of maternal effects by comparing developmental and adult phenotypes of individuals reared on their own diet with those swapped onto the opposite diet for either one or two generations (high and low maternal effect conditions, respectively), both at the start and after 30 generations of selection. Initially, there were strong maternal effects on female body mass and male mating success but not larval survival. Interestingly, the initial maternal effects observed in female body mass and male mating success showed sex‐specific interactions when individuals from high calorie regimes were tested on low calorie diets. However, as populations responded to selection, the effects of maternal provisioning on all traits diminished. The results broadly supported the predictions. They show how the contribution of maternal effects to dietary responses evolves in a context‐dependent manner, with significant variation across different fitness‐related traits. We conclude that maternal effects can evolve during nutritional adaptation and hence may be an important life history trait to measure, rather than to routinely minimize.

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Section: Resultssupporting

confidence: 76%

“…Importantly, previous research has also documented rapid divergence and local adaptation in response to nutrition, in the same lines as used in this study (Leftwich et al. ).…”

mentioning

confidence: 53%

“…B) (Leftwich et al. ). This pattern appeared to be attributable to both larval and pupal development, as described below.…”

Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Contribution of maternal effects to dietary selection in Mediterranean fruit flies

et al. 2019

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The evolution of adult pollen feeding did not alter postembryonic growth in Heliconius butterflies

Hebberecht

Melo-Florez

Young

et al. 2022

Ecology and Evolution

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For many animals, the availability and provision of dietary resources can vary markedly between juvenile and adult stages, often leading to a temporal separation of nutrient acquisition and use. Juvenile developmental programs are likely limited by the energetic demands of many adult tissues and processes with early developmental origins. Enhanced dietary quality in the adult stage may, therefore, alter selection on life history and growth patterns in juvenile stages. Heliconius are unique among butterflies in actively collecting and digesting pollen grains, which provide an adult source of essential amino acids. The origin of pollen feeding has therefore previously been hypothesized to lift constraints on larval growth rates, allowing Heliconius to spend less time as larvae when they are most vulnerable to predation. By measuring larval and pupal life‐history traits across three pollen‐feeding and three nonpollen‐feeding Heliconiini, we provide the first test of this hypothesis. Although we detect significant interspecific variation in larval and pupal development, we do not find any consistent shift associated with pollen feeding. We discuss how this result may fit with patterns of nitrogen allocation, the benefits of nitrogenous stores, and developmental limitations on growth. Our results provide a framework for studies aiming to link innovations in adult Heliconius to altered selection regimes and developmental programs in early life stages.

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Larval Diet Affects Male Pheromone Blend in a Laboratory Strain of the Medfly, Ceratitis capitata (Diptera: Tephritidae)

et al. 2018

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The Mediterranean fruit fly (medfly) Ceratitis capitata is a polyphagous pest of fruits and crops with a worldwide distribution. Its ability to use different larval hosts may have multiple effects, including impacts on adult reproductive biology. The male sex pheromone, which plays a key role in attracting both other males to lekking arenas and females for mating, is a mixture of chemical compounds including esters, acids, alkanes and terpenes known to differ between laboratory strains and wild-type populations. The relationship between larval diet and adult pheromone composition remains unexplored. Here, we investigated the effect of larval diet, including laboratory media and fresh fruits, on the composition of the male pheromone mixture. Using Headspace Solid Phase Microextraction we collected the pheromone emitted by males reared as larvae on different substrates and found both qualitative and quantitative differences. A number of alkanes appeared to be typical of the pheromone of males reared on wheat bran-based larval medium, and these may be cuticular hydrocarbons involved in chemical communication. We also detected differences in pheromone composition related to adult male age, suggesting that variations in hormonal levels and/or adult diet could also play a role in determining the chemical profile emitted. Our findings highlight the plasticity of dietary responses of C. capitata, which may be important in determining the interactions of this pest with the environment and with conspecifics. These results also have applied relevance to increase the mating competitiveness of mass-reared C. capitata used in Sterile Insect Technique programs.

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Adaptation to divergent larval diets in the medfly,Ceratitis capitata

Cited by 23 publications

References 58 publications

Contribution of maternal effects to dietary selection in Mediterranean fruit flies

Contribution of maternal effects to dietary selection in Mediterranean fruit flies

The evolution of adult pollen feeding did not alter postembryonic growth in Heliconius butterflies

Larval Diet Affects Male Pheromone Blend in a Laboratory Strain of the Medfly, Ceratitis capitata (Diptera: Tephritidae)

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