Not berry hungry? Discovering the hidden food sources of a small fruit specialist, Drosophila suzukii

Ecological Entomology, Journal Year: 2019, Volume and Issue: 44(6), P. 810 - 822

Published: June 5, 2019

1. Although polyphagy is widespread among Drosophila , some specialist species have evolved in response to resource competition and other selection factors favouring niche separation. The small fruit suzukii Matsumura has a unique serrated ovipositor that allows it access ripening fruit, unavailable most . However, unclear whether ancestral traits (the use of non‐fruit resources) are maintained this species. 2. In study, maternal preferences offspring fitness novel apple, mushroom, bird manure‐based diets were investigated by comparing oviposition survival development on various diets. effect those at cool temperatures the natal environment/previous exposure adult evaluated. 3. Female D. accepted such as mushroom manure, completed their larval all tested. did not perform well included manure. By contrast, combinational apple/mushroom associated with greater oviposition, lower mortality, faster development, larger than These also increased resistance cold stress, preference for these was positively affected previous feeding experience. 4. data suggest may resources when preferred scarce. Given pest adapted temperate climates, alternative might provide seasonal nutritional support temporally available, although field needed hypothesis.

Language: Английский

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Sex-Specific Responses of Life Span and Fitness to Variation in Developmental Versus Adult Diets in Drosophila melanogaster

The Journals of Gerontology Series A, Journal Year: 2019, Volume and Issue: 75(8), P. 1431 - 1438

Published: July 30, 2019

Nutritional variation across the lifetime can have significant and sex-specific impacts on fitness. Using Drosophila melanogaster, we measured these by testing effects life span reproductive success of high or low yeast content in developmental versus adult diets, separately for each sex. We tested two hypotheses: that dietary mismatches between development adulthood are costly any such costs sex-specific. Overall, results revealed rich complex responses sex to lifetime. Contrary first hypothesis, stages were not universally costly. Where nutritional course did occur, they sex-, context-, trait-specific, consistent with hypothesis 2. found diets females but males. Adult diet was main determinant survival, significantly longer food, comparison low, both sexes. Developing a also benefited female success, regardless diet. In contrast, only beneficial male when it followed food. affected mating frequency opposing directions, males having higher no interaction either The emphasize importance differences directionality variation.

Language: Английский

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Drosophila suzukiiavoidance of microbes in oviposition choice

Royal Society Open Science, Journal Year: 2021, Volume and Issue: 8(1), P. 201601 - 201601

Published: Jan. 20, 2021

While the majority of Drosophila species lays eggs onto fermented fruits, females suzukii pierce skin and lay into ripening fruits using their serrated ovipositors. The changes oviposition site preference must have accompanied this niche exploitation. In study, we established an assay to investigate effects commensal microbes deposited by conspecific heterospecific individuals showed that presence on substrate enhances egg laying melanogaster biarmipes , but discourages D. . This result suggests a drastic change has taken place in lineage leading how respond chemical cues produced microbes. We also found hardness substrate, resembling either or damaged fermenting affects response microbial growth, indicating mechanosensory stimuli interact with chemosensory-guided decisions select avoid sites.

Language: Английский

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Sugar sensation and mechanosensation in the egg-laying preference shift of Drosophila suzukii

eLife, Journal Year: 2022, Volume and Issue: 11

Published: Nov. 18, 2022

The agricultural pest Drosophila suzukii differs from most other species in that it lays eggs ripe, rather than overripe, fruit. Previously, we showed changes bitter taste sensation accompanied this adaptation (Dweck et al., 2021). Here, show D. has also undergone a variety of sweet sensation. weaker preference melanogaster for laying on substrates containing all three primary fruit sugars: sucrose, fructose, and glucose. Major subsets sensilla have lost electrophysiological responses to sugars. Expression several key sugar receptor genes is reduced the organs suzukii. By contrast, certain mechanosensory channel genes, including no mechanoreceptor potential C, are expressed at higher levels suzukii, which stiff substrates. Finally, find responds differently combinations cues. Thus, two differ sensation, mechanosensation, their integration, likely contribute differences egg-laying preferences nature.

Language: Английский

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Winter fruit contribution to the performance of the invasive fruit fly Drosophila suzukii under different thermal regimes

Insect Science, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 16, 2025

Polyphagous insect species develop using multiple host plants. Often considered beneficial, polyphagy can also be costly as nutritional quality may vary. Drosophila suzukii (Matsumura) is an invasive that on numerous fruit over the annual cycle. Here, we assessed contribution of winter-available to development seasonal populations D. suzukii, under fluctuating late winter/early spring temperature regimes. We infested artificial diet and three suitable available in (Aucuba japonica, Elaeagnus ×submacrophylla, Viscum album) with larvae regimes: constant 20 °C, controlled regime 8-15 °C (12 h light at 8 12 dark 15 °C), uncontrolled outdoor during spring. As expected, fly performance was impaired by early spring-like environmental conditions, whatever diet, winter were suboptimal diets compared thermal regime. However, cold regimes, ranking supporting best changed, highlighting occurrence physiological trade-offs. Winter-acclimated females preferentially oviposited A. japonica and/or E. regime, which does not support preference-performance hypothesis. This finding discussed context management strategies.

Language: Английский

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Untargeted metabolomic and transcriptomic analysis in spring and durum wheat reveals potential mechanisms associated with the early stem solidness phenotype and resistance to wheat stem sawfly

Frontiers in Plant Science, Journal Year: 2025, Volume and Issue: 16

Published: Feb. 19, 2025

Wheat stem sawfly (WSS) causes devastating yield loss in both common bread wheat (Triticum aestivum L.) and durum turgidum L. var durum) the North American Great Plains. The early solidness phenotype confers solid stems plant development coinciding with flight period of WSS provides protection to plants during critical oviposition period. With this phenotype, pith is lost as develops, which may allow for enhanced biological control surviving larvae by braconid parasitoids Bracon cephi (Gahan) lissogaster Muesebeck, well having additional potential benefits from utilizing reabsorbed components. Here, we use an untargeted transcriptomics metabolomics approach explore mechanisms related three cultivars spring two addition near- isogenic pairs wheat. We identified effects growth stage allele on expression metabolites transcripts associated solidness, cell walls programmed death. A caffeic acid methylesterase pectin were upregulated hollow stemmed Reeder lines 3BLa allele, likely influences lignin subunit proportions production volatile semiochemicals that impact behavior adult WSS. TaVPE3cB, a gene death thickening walls, also had increased partially responsible observed. Growth affected involved phenylpropanoid pathway, carbohydrate glycoside biosynthesis lipid biosynthesis, implicating involvement these pathways resistance response infestation

Language: Английский

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On the use of kinship and familiarity associated social information in mediating Drosophila melanogaster oviposition decisions

PLoS ONE, Journal Year: 2025, Volume and Issue: 20(3), P. e0320377 - e0320377

Published: March 26, 2025

Decisions where an individual lays their eggs are important, as the choice may affect offspring’s survival and lifetime reproductive success. Information produced by conspecifics can potentially be useful in making decisions this “social information” provide energetically cheaper means of assessing oviposition site suitability rather than acquiring it personally. However, not all public information equally beneficial, cues kin especially valuable they might signal suitable microenvironments, associated with other fitness advantages resulting from improved foraging success and/or a decreased risk competition/cannibalism compared to sites unrelated located. Using fruit fly, Drosophila melanogaster , we explored whether use is kin-based egg-laying decisions. Kinship recognized several ways, including environmentally-associated proxy cues, so there were biases how focal females interacted that differed both genetic relatedness, environmental “familiarity.” In series inter-connected assays, examined behaviour potential substrates manner prior conspecific exposure, counted offspring eclosed these different substrates. Sites had exhibited demonstrators visited more, yielded more unexposed Furthermore, patterns bias production consistent ovipositing exhibiting sensitivity kinship status substrate’s occupants. The basis categorization appears based on phenotypes reflect true but nature social affected factors. These results further highlight usefulness D. model understand evolution expression decision-making.

Language: Английский

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Propensity for resistance development in the invasive berry pest, spotted‐wing drosophila (Drosophila suzukii), under laboratory selection

Pest Management Science, Journal Year: 2022, Volume and Issue: 78(12), P. 5203 - 5212

Published: Aug. 20, 2022

Over the past 14 years, invasive vinegar fly, spotted-wing drosophila (Drosophila suzukii), has become one of most damaging fruit pests in United States. With regional economic losses estimated as high $500 million for moderate infestations, D. suzukii control represents an often-untenable cost to growers. Management relies heavily on chemical control, which may be applied up nine times season. The widespread use controls led concerns about insecticide resistance, and resistant field populations have already been documented California Michigan.

Language: Английский

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Interactions among morphotype, nutrition, and temperature impact fitness of an invasive fly

Ecology and Evolution, Journal Year: 2019, Volume and Issue: 9(5), P. 2615 - 2628

Published: Feb. 3, 2019

Abstract Invasive animals depend on finding a balanced nutritional intake to colonize, survive, and reproduce in new environments. This can be especially challenging during situations of fluctuating cold temperatures food scarcity, but phenotypic plasticity may offer an adaptive advantage these periods. We examined how lifespan, fecundity, pre‐oviposition periods, body nutrient contents were affected by dietary protein carbohydrate (P:C) ratios at variable low two morphs (winter WM summer SM) invasive fly, Drosophila suzukii. The experimental conditions simulated early spring after overwintering autumn, crucial periods for survival. At lower temperatures, post‐overwintering lived longer carbohydrate‐only diets had higher fecundity low‐protein diets, there was no difference lifespan or among SM. As increased, resulted without compromising while high‐protein reduced both Both SM receiving sugar, lipid, glycogen (but similar protein) compared flies diets. suggests that spend energy excreting excess protein, thereby affecting fecundity. Despite having recover from depletion period, exhibited than favorable temperatures. exposed diet SM, which is possibly linked better performance. Although essential oogenesis, did not have shorter Finding adequate sources compensate the successful persistence D. suzukii populations suboptimal

Language: Английский

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Metabolic consequences of various fruit-based diets in a generalist insect species

eLife, Journal Year: 2023, Volume and Issue: 12

Published: June 6, 2023

Most phytophagous insect species exhibit a limited diet breadth and specialize on few or single host plant. In contrast, some display remarkably large breadth, with plants spanning several families many species. It is unclear, however, whether this phylogenetic generalism supported by generic metabolic use of common chemical compounds (‘metabolic generalism’) alternatively distinct uses diet-specific (‘multi-host specialism’)? Here, we simultaneously investigated the metabolomes fruit diets individuals generalist species, Drosophila suzukii , that developed them. The direct comparison consumers enabled us to disentangle fate rarer dietary compounds. We showed consumption biochemically dissimilar resulted in canalized, response from individuals, consistent hypothesis. also metabolites, such as those related particular color, odor, taste diets, were not metabolized, rather accumulated consumer even when probably detrimental fitness. As result, while mostly similar across detection their was straightforward. Our study thus supports view may emerge passive, opportunistic various resources, contrary more widespread views an active role adaptation process. Such passive stance towards chemicals, costly short term, might favor later evolution new specializations.

Language: Английский

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