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359 results for “Drosophila species”
Figs. 11–17 in Is Drosophila nasuta Lamb (Diptera, Drosophilidae) currently reaching the status of a cosmopolitan species?
Figs. 11–17. Chromosomes from larvae and young male imagoes of the invasive Drosophila nasuta (isofemale lines M59F1 and M60F1), Cidade Universitária "Armando de Salles Oliveira", São Paulo, state of São Paulo, Brazil. 11–14. C-band mitotic metaphase with 2n = 8 in neuroblast cells of females (11, 12) and males (13, 14), note the rod-X chromosomes and the J-shaped heterochromatic Y chromosome. 15–17. Male meiotic configurations. 15. Metaphase I, note the XY heterologous association. 16–17. Metaphase II cells, the sex chromosomes are indicated. The dot chromosomes are indicated by arrowheads. All photomicrographs of the mitotic or the meiotic cells are to the same scale. Scale bars = 10 µm.
Linked collectors and determiners for: Resolving the synonymy and polyphyly of the ' Drosophila bakoue species complex' (Diptera: Drosophilidae: ' D. montium species group') with descriptions of two new species from Madagascar.
Natural history specimen data linked to collectors and determiners held within, "Resolving the synonymy and polyphyly of the ' Drosophila bakoue species complex' (Diptera: Drosophilidae: ' D. montium species group') with descriptions of two new species from Madagascar". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/fbea3203-a10b-4e4f-b5f3-3d1387bc84c3">https://bionomia.net/dataset/fbea3203-a10b-4e4f-b5f3-3d1387bc84c3</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/fbea3203-a10b-4e4f-b5f3-3d1387bc84c3">https://gbif.org/dataset/fbea3203-a10b-4e4f-b5f3-3d1387bc84c3</a>. Formatted as a Frictionless Data package.
Data from: Cis- and trans-acting genetic factors contribute to heterogeneity in the rate of crossing over between the Drosophila simulans clade species
In the genus Drosophila, variation in recombination rates has been found within and between species. Genetic variation for both cis- and trans-acting factors has been shown to affect recombination rates within species, but little is known about the genetic factors that affect differences between species. Here we estimate rates of crossing over for seven segments that tile across the euchromatic length of the X chromosome in the genetic backgrounds of three closely related Drosophila species. We first generated a set of Drosophila mauritiana lines each having two semi-dominant visible markers on the X chromosome and then introgressed these doubly marked segments into the genetic backgrounds of its sibling species, D. simulans and D. sechellia. Using these 21 lines (7 segments, 3 genetic backgrounds) we tested whether recombination rates within the doubly marked intervals differed depending on genetic background. We find significant heterogeneity among intervals and among species backgrounds. Our results suggest that a combination of both cis- and trans-acting factors have evolved among the three D. simulans clade species and interact to affect recombination rate.
FIG. 16 in Revision of the Drosophila bromeliae Species Group (Diptera: Drosophilidae): Central American, Caribbean, and Andean Species
FIG. 16. Male genitalia of three species in the bromeliae group. A–C. Drosophila thurstoni, n. sp. (DBG 34). D, E. Species indet. (DBG 40: "Panama: Darién Province: El Real XI-29-963 Sarah B. Pipkin"). F, G. Species indet. (DBG 53: "Ecuador: Loja, 45 km SSE Portovelo, Rio Yaguachi, 080 m, 4 November, 1987/R. Davidson, J. Rawlins, C. Young, riparian scrub").
FIG. 12 in Revision of the Drosophila bromeliae Species Group (Diptera: Drosophilidae): Central American, Caribbean, and Andean Species
FIG. 12. Male genitalia of two bromeliae group species. A–C. Drosophila billheedi, n. sp. (DBG 2, holotype). D–F. Drosophila sevensteri, n. sp. (DBG 20). A, D. Lateral views of aedeagus, aedeagal apodeme, gonopod, and full ventral view of distiphallus. B, E. Hypandria. C, F. Surstyli and ventral lobes of epandrium.
A holocenic and dynamic hybrid zone between two cactophilic Drosophila species in a coastal lowland plain of the Brazilian Atlantic Forest
<p>Hybridization and introgression are processes that contribute to shaping biological diversity. The factors promoting the formation of these processes are multiples but poorly explored in a biogeographical and ecological context. In the southeast coastal plain of the Brazilian Atlantic Forest, a hybrid zone was described between two closely related cactophilic species, <i>Drosophila antonietae</i> and <i>D. serido. </i>Here, we revisited and analyzed specimens from this hybrid zone to evaluate its temporal and spatial dynamic. We examined allopatric and sympatric populations of the flies using independent sources of data such as mitochondrial and nuclear sequences, microsatellite loci, morphometrics of wings and male genitalia, and climatic niche models. We also verified the emergence of the flies from necrotic tissues of collected cacti to verify the role of host association for the population dynamics. Our results support the existence of a hybrid zone due to secondary contact and limited to the localities where the two species are currently in contact. Furthermore, we detected asymmetric bidirectional introgression and the maintenance of the species integrity, ecological association, and morphological characters, suggesting selection and limited introgression. Considering our paleomodels, probably this hybrid zone is recent and the contact occurred during the Holocene to the present-day, favored by range expansion of their populations due to expansion of open and dry areas in eastern South America during palaeoclimatic and geomorphological events.</p>
Data from: Mitochondrial–nuclear epistasis affects fitness within species but does not contribute to fixed incompatibilities between species of Drosophila
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Data from: The organization and evolution of the Responder satellite in species of the Drosophila melanogaster group: dynamic evolution of a target of meiotic drive
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A holocenic and dynamic hybrid zone between two cactophilic Drosophila species in a coastal lowland plain of the Brazilian Atlantic Forest
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Data from: The role of species-specific sensory cues in male responses to mating rivals in Drosophila melanogaster fruitflies
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Data from: Plasticity for desiccation tolerance across Drosophila species is affected by phylogeny and climate in complex ways
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Data from: Distinguishing migration from isolation using genes with intragenic recombination: detecting introgression in the Drosophila simulans species complex
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Data from: Hybridization in the Drosophila melanogaster subgroup: incomplete isolation among the three species of the yakuba complex
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Data from: Cis- and trans-acting genetic factors contribute to heterogeneity in the rate of crossing over between the Drosophila simulans clade species
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Data from: Genetics of hybrid male sterility among strains and species in the Drosophila pseudoobscura species group
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Data from: Symbiont strain is the main determinant of variation in Wolbachia-mediated protection against viruses across Drosophila species
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Evolution of male genitalia in the Drosophila repleta species group (Diptera: Drosophilidae)
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Data from: On the Coyne and Orr-igin of species: effects of intrinsic postzygotic isolation, ecological differentiation, X-chromosome size, and sympatry on Drosophila speciation
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Data from: Basal cold but not heat tolerance constrains plasticity among Drosophila species (Diptera: Drosophilidae)
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Data from: Male mate choice via cuticular hydrocarbon pheromones drives reproductive isolation between Drosophila species
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
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DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.