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12 results for “Zaprionus indianus”
Figure 1 in First Report of African Fig Fly, Zaprionus indianus Gupta (Diptera: Drosophilidae), on the Island of Maui, Hawaii, USA, in 2017 and Potential Impacts to the Hawaiian Entomofauna
Figure 1. Thorax (a) and front tibia (b) of Zaprionus indianus collected on Maui. The lack of a white spot on the scutellum, and the presence of tibial spines, separates this species from Zaprionus ghesquierei.
Data from: Strength of enemy release from parasitoids is context-dependent in the invasive African Fig Fly, Zaprionus indianus
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Rapid wing size evolution of African fig fly (Zaprionus indianus) following temperate colonization
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Data from: Limited population structure but signals of recent selection in introduced African Fig Fly (Zaprionus indianus) in North America
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Data: Genomic signatures of admixture and selection are shared among populations of Zaprionus indianus across the western hemisphere
<p>Introduced species have become an increasingly common component of biological communities around the world. A central goal in invasion biology is therefore to identify the demographic and evolutionary factors that underlie successful introductions. Here we use whole genome sequences, collected from populations in the native and introduced ranges of the African fig fly, <i>Zaprionus indianus</i>, to quantify genetic relationships among them, identify potential sources of the introductions, and test for selection at different spatial scales. We find that geographically widespread populations in the western hemisphere are genetically more similar to each other than to lineages sampled across Africa, and that these populations share a mixture of alleles derived from differentiated African lineages. Using patterns of allele-sharing and demographic modelling we show that <i>Z. indinaus</i> have undergone a single expansion across the western hemisphere with admixture between African lineages predating this expansion. We also find support for selection that is shared across populations in the western hemisphere, and in some cases, with a subset of African populations. This suggests either that parallel selection has acted across a large part of <i>Z. indianus</i>'s introduced range; or, more parsimoniously, that <i>Z. indianus</i> has experienced selection early on during (or prior-to) its expansion into the western hemisphere. We suggest that the range expansion of <i>Z. indianus</i> has been facilitated by admixture and selection, and that management of this invasion could focus on minimizing future admixture by controlling the movement of individuals within this region rather than between the western and eastern hemisphere.</p>
Data for: A small survey of introduced African fig fly (Zaprionus indianus) (Diptera: Drosophilidae) in orchards of the eastern United States
<p><span>The African fig fly, <em>Zaprionus indianus </em>(Gupta), is a generalist fruit fly that typically breeds in decaying fruits from over 70 plant species. The species<em> </em>has spread globally from its native range in tropical Africa, becoming an invasive pest on ripening figs in Brazil. First reported in the United States in 2005 in Florida, <em>Z. indianus</em> has since been documented as far north as Canada and is hypothesized to recolonize northwards from southern refugia each year. We sampled drosophilid communities over the growing season at two orchards in Virginia from 2020-2022 and 11 orchards along the East Coast during the fall of 2022 to quantify abundance of <em>Z. indianus</em> relative to other drosophilids across locations, seasons, and fruit crops. Massachusetts was the northernmost population, with no <em>Z. indianus</em> detected in Maine and no correlation between latitude and relative abundance. Variation in <em>Z. indianus</em> relative abundance was high between nearby orchards and abundance was higher on peaches relative to apples within orchards. Comparisons of seasonal abundance curves between two Virginia orchards showed similar dynamics across years with individuals first detected around July and becoming absent around December, with peaks in late summer and mid fall. The variation in seasonal and latitudinal abundance<em> </em>shown here highlight a need for broader sampling to accurately characterize the range, spread, and environmental tolerances of <em>Z. indianus</em> in North America. </span></p>
Data: Genomic signatures of admixture and selection are shared among populations of Zaprionus indianus across the western hemisphere
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Data for: A small survey of introduced African fig fly (Zaprionus indianus) (Diptera: Drosophilidae) in orchards of the eastern United States
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Data from: Whole genome sequence resource of Indian Zaprionus indianus
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Data from: Differences in larval nutritional requirements and female oviposition preference reflect the order of fruit colonization of Zaprionus indianus and Drosophila simulans
Species coexist using the same nutritional resource by partitioning it either in space or time, but few studies explore how species-specific nutritional requirements allow partitioning. Zaprionus indianus and Drosophila simulans co-exist in figs by invading the fruit at different stages; Z. indianus colonizes ripe figs, whereas D. simulans oviposits in decaying fruit. Larvae feed on yeast growing on the fruit, which serves as their primary protein source. Because yeast populations increase as fruit decays, we find that ripe fruit has lower protein content than rotting fruit. Therefore, we hypothesized that Z. indianus and D. simulans larvae differ in their dietary requirements for protein. We used nutritional geometry to assess the effects of protein and carbohydrate concentration in the larval diet on life history characters in both species. Survival, development time, and ovariole number respond differently to the composition of the larval diet, with Z. indianus generally performing better across a wider range of protein concentrations. Correspondingly, we found that Z. indianus females preferred to lay eggs on low protein foods, while D. simulans females chose higher protein foods for oviposition when competing with Z. indianus. We propose the different nutritional requirements and oviposition preference of these two species allows them to temporally partition their habitat.
Data from: Differences in larval nutritional requirements and female oviposition preference reflect the order of fruit colonization of Zaprionus indianus and Drosophila simulans
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Figure 2 in First Report of African Fig Fly, Zaprionus indianus Gupta (Diptera: Drosophilidae), on the Island of Maui, Hawaii, USA, in 2017 and Potential Impacts to the Hawaiian Entomofauna
Figure 2. Trap installation: example of trap positioning on a lemon tree
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