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4,479 results for “Hybrid”
Fig. 4 in MORPHOLOGICAL CHARACTERISTICS OF HYBRID PIKEPERCH (SANDER LUCIOPERCA f × SANDER VOLGENSIS m) (OSTEICHTHYES, PERCIDAE)
Fig. 4. Variable loadings of principal component (PC) analyses of meristic and morphometric characters of S. lucioperca (square), S. volgensis (triangle) and their F1 hybrid (circle). a – meristic PC1; b – meristic PC2; c – morphometric PC1; morphometric PC2. Full names of analysed characters are
Fig. 2. a – S in MORPHOLOGICAL CHARACTERISTICS OF HYBRID PIKEPERCH (SANDER LUCIOPERCA f × SANDER VOLGENSIS m) (OSTEICHTHYES, PERCIDAE)
Fig. 2. a – S. lucioperca; b-d – S. lucioperca × S. volgensis F1 hybrids; e – S. volgensis; f – hybrid with deformed mandible
Fig. 1 in MORPHOLOGICAL CHARACTERISTICS OF HYBRID PIKEPERCH (SANDER LUCIOPERCA f × SANDER VOLGENSIS m) (OSTEICHTHYES, PERCIDAE)
Fig. 1. Morphometric characters used to differentiate Sander lucioperca and S. volgensis and their hybrid. Each measurement was taken as the shortest (direct) distance between two corresponding ref-
Fig. 4 in The Chorthippus Albomarginatus-Group (Orthoptera: Acrididae: Gomphocerinae) In The Carpathian Basin: Traces Of Hybridization Between C. Albomarginatus And C. Oschei In Southern Slovakia
Fig. 4. Oscillograms of the courtship song (parts of the songs showed in Fig. 2) of four males of Chorthippus oschei from Slovakia (in each group of three lines, the two upper lines represent leg-movements and the third line represents sound). a, b – males no. 1–2 from NE Ardovo, c, d – males 3–4 from SW Ardovo (in d – the recording of only one leg is shown). B1, A1 and C elements are indicated. Drawings show the stroke with the hind tibiae at the beginning of the C element and the
Fig. 1 in The Chorthippus Albomarginatus-Group (Orthoptera: Acrididae: Gomphocerinae) In The Carpathian Basin: Traces Of Hybridization Between C. Albomarginatus And C. Oschei In Southern Slovakia
Fig. 1. Male (on the left) and female (on the right) of Chorthippus oschei from locality Ardovo in southern Slovakia
Fig. 3 in The Chorthippus Albomarginatus-Group (Orthoptera: Acrididae: Gomphocerinae) In The Carpathian Basin: Traces Of Hybridization Between C. Albomarginatus And C. Oschei In Southern Slovakia
Fig. 3. Oscillograms of the courtship song (parts of the songs showed in Fig. 2) of four males of Chorthippus oschei from Slovakia (in each group of three lines, the two upper lines represent leg-movements and the third line represents sound). a, b – males no. 1–2 from NE Ardovo, c, d –
HYBRID WARFARE AS A PHENOMENON: EMERGENCE AND DEFINITIONAL PROBLEMS
<p><span>The article analyzes the problems of the emergence of the phenomenon of hybrid warfare. Different approaches to the definition of this category in domestic and foreign scientific literature are considered. The key theoretical concepts for the interpretation of the term hybrid warfare are formulated. A number of distinctive features in the general characterization of the phenomenon of hybrid warfare are given.</span></p>
Swordtail fish hybrids reveal that genome evolution is surprisingly predictable after initial hybridization
<p>Over the past two decades, biologists have come to appreciate that hybridization, or genetic exchange between distinct lineages, is remarkably common – not just in particular lineages but in taxonomic groups across the tree of life. As a result, the genomes of many modern species harbor regions inherited from related species. This observation has raised fundamental questions about the degree to which the genomic outcomes of hybridization are repeatable and the degree to which natural selection drives such repeatability. However, a lack of appropriate systems to answer these questions has limited empirical progress in this area. Here, we leverage independently formed hybrid populations between the swordtail fish <em>Xiphophorus birchmanni </em>and <em>X. cortezi </em>to address this fundamental question. We find that local ancestry in one hybrid population is remarkably predictive of local ancestry in another, demographically independent hybrid population. Applying newly developed methods, we can attribute much of this repeatability to strong selection in the earliest generations after initial hybridization. We complement these analyses with time-series data that demonstrates that ancestry at regions under selection has remained stable over the past ~40 generations of evolution. Finally, we compare our results to the well-studied <em>X. birchmanni×X. malinche </em>hybrid populations and conclude that deeper evolutionary divergence has resulted in stronger selection and higher repeatability in patterns of local ancestry in hybrids between <em>X. birchmanni </em>and <em>X. cortezi</em>.</p>
Figure 2 in Morphological traits allow distinguishing their hybrids from the Northern pike, Esox lucius, and the Aquitanian pike, Esox aquitanicus (Actinopterygii, Esociformes)
Figure 2. – Photos of pike specimens identified as hybrids of Esox aquitanicus and E. lucius according to Denys et al. (2014, 2018) (see Tab. I): Adour River at Estirac, 29 Aug. 2013, BRO462 247 mm SL (A); Boutonne stream (Charente drainage) at Saint-Séverin-sur-Boutonne, 10 Oct. 2013, BRO545 416 mm SL (B); Lien stream (Charente drainage) at Condac, 10 Sep. 2013, BRO505 402 mm SL (C), BRO506 282 mm SL (D) and BRO509 145 mm SL (E); Eyre River at Bélin-Béliet, 8 Jul. 2013, BRO445 121 mm SL (F). Credit photos: G. Denys / MNHN.
Fig. 1 in Genetic identification of interspecific hybrid of Neotropical catfish species (Pseudoplatystoma corruscans vs. Pseudoplatystoma reticulatum) in rivers of Mato Grosso do Sul State, Brazil
Fig. 1. Map of collection sites of the biological material. Upper Paraná River basin: Dourados River (1 to 16), Brilhante River (17), and Ivinhema River (18 to 20). Paraguay River basin: Miranda River (21), Aquidauana River (22), Negro River (23), and Paraguay River (24).
Fig. 8 in Populations of Odontesthes (Teleostei: Atheriniformes) in the Andean region of Southern South America: body shape and hybrid individuals
Fig. 8. Geometric Morphometric Analysis applied to O. hatcheri individuals. Left: plot of DF3 vs. DF2 showing means and 95% confidence intervals by sampling sites (locality labels as in Fig. 1) NIHL (white triangle), CDP (black circle), 7: PELE (gray square), PDA (black triangle), MITO (black diamond), CARI (white square), EPU (black and white diamond), RIV (gray circle), ROS (white diamond), AME (black square), CHU (gray diamond), MUS (gray triangle), LBA (white circle), and PUY (white triangle). Right: deformation grids correspond to a relative warps analysis involving only CDP, PDA, and NIHL and PUY. Arrowheads indicate displacement of landmarks relative to consensus. Shaded area remarks relative position of landmarks 5 (anterior insertion of the first dorsal fin) and 12 (distal tip of the pelvic fin onto fish body).
Fig. 6 in Populations of Odontesthes (Teleostei: Atheriniformes) in the Andean region of Southern South America: body shape and hybrid individuals
Fig. 6. Probability for taxonomically identified Odontesthes hatcheri individuals of being O. hatcheri (left) and probability of taxonomically identified O. bonariensis individuals of being O. bonariensis (right). Number of fish, median, quartiles, and data outside 10 and 90th percentile are indicated. Water bodies are named as in Fig. 1.
Fig. 5 in Populations of Odontesthes (Teleostei: Atheriniformes) in the Andean region of Southern South America: body shape and hybrid individuals
Fig. 5. Morphometric differences between species. DF1 and residual DF2 (of the regression of DF2 versus Standard length) vs. Standard length (SL). Odontesthes bonariensis (white circle), O. hatcheri (black circle), and presumptive hybrids (gray circle).
Fig. 4 in Populations of Odontesthes (Teleostei: Atheriniformes) in the Andean region of Southern South America: body shape and hybrid individuals
Fig. 4. Geometric Morphometric Analysis applied to Odontesthes individuals. RW2 versus RW1 and deformation grids (tied to group means) for Odontesthes bonariensis (white circle), O. hatcheri (black circle) and presumptive hybrids (gray circle). Arrowheads indicate displacement of landmarks relative to consensus. Shaded area shows relative position of landmarks 5 (anterior insertion of the first dorsal fin) and 12 (distal tip of the pelvic fin onto fish body).
Fig. 1 in Populations of Odontesthes (Teleostei: Atheriniformes) in the Andean region of Southern South America: body shape and hybrid individuals
Fig. 1. Distribution of O. hatcheri (light gray) and O. bonariensis (dark gray) described by Dyer (2006) and sampling localities: ULLM, Ullum Reservoir; CARZ, Carrizal Reservoir; NIHL, Nihuil Reservoir; D, Lake San Lorenzo; URRE, Lake Urre Lauquen; CDP, Casa de Piedra Reservoir; PELE, Lake Pellegrini; PDA, Piedra del Aguila Reservoir; MITO, Lake Morenito; CARI, Lake Carilafquen; EPU, Lake Epuyén; RIV, Lake Rivadavia; ROS, Lake Rosario; AME, Florentino Ameghino Reservoir; CHU, Chubut River at Los Altares; MUS, Lake Musters; LBA, Lake Buenos Aires; PUY, Lake Pueyrredón. White triangles show the location of the three hatcheries (Estación Hidrobiológica de Chascomús 35º36'S, 58º01'W, Estación de Piscicultura de Embalse 32º13'S, 64º29'W, and Estación de Piscicultura Río Limay 38º59'S, 68º14'W), sources of stocking practices.
Figure 1 in Resistance of sorghum hybrids to sorghum aphid
Figure 1. Survival rate (lx) and mean number of nymphs/female (mx) of the Melanaphis sorghi on 15 hybrids of grain sorghum.
Data from: Ancient and recent hybridization in the Oreochromis cichlid fishes
<p>Cichlid fishes of the genus <em>Oreochromis</em> (tilapia) are among the most important fish for inland capture fisheries and global aquaculture. Deliberate introductions of non-native species for fisheries improvement and accidental escapees from farms have resulted in admixture with indigenous species. Such hybridization may be detrimental to native biodiversity, potentially leading to genomic homogenization of populations and the loss of important genetic material associated with local adaptation. By contrast, introgression may fuel diversification when combined with ecological opportunity, by supplying novel genetic combinations. To date, the role of introgression in the evolutionary history of tilapia has not been explored. Here we studied both ancient and recent hybridization in tilapia, using whole genome resequencing of 575 individuals from 23 species. We focused on Tanzania, a natural hotspot of tilapia diversity, and a country where hybridization between exotic and native species in the natural environment has been previously reported. We reconstruct the first genome-scale phylogeny of the genus and reveal prevalent ancient gene flow across the Oreochromis phylogeny. This has likely resulted in hybrid speciation of one species, <em>O. chungruruensis</em>. We identify multiple cases of recent hybridization between native and introduced species in the wild, linked to the use of non-native species in both capture fisheries improvement and aquaculture. This has potential implications for both conservation of wild populations and the development of the global tilapia aquaculture industry.</p>
From Chalcogen Bonding to S–𝝅 Interactions in Hybrid Perovskite Photovoltaics
<p>Dataset for “From Chalcogen Bonding to S–𝝅 Interactions in Hybrid Perovskite Photovoltaics” (doi:10.1002/advs.202405622), including main and supporting figures</p>
Tensile tests on PEEL and LAP hybrid self-pierce riveting joints with and without adhesive
<p>The following repository contains experimental data from tensile tests on PEEL and LAP hybrid self-pierce riveting joints with and without adhesive. The uploaded files are in .xlsx format, and each file reports the time, displacement and force obtained during the experimental tests.</p> <p> </p> <p><strong>NextGenerationEU: National Sustainable Mobility Center CN00000023, Italian Ministry of University and Research Decree n. 1033 - 17/06/2022, Spoke 11 - Innovative Materials & Lightweighting.</strong></p>
Genetic variability and telomeres: Insights from a tropical avian hybrid zone
<p>Telomere lengths and telomere dynamics can correlate with lifespan, behavior, and individual quality. Such relationships have spurred interest in understanding variation in telomere lengths and their dynamics within and between populations. Many studies have identified how environmental processes can influence telomere dynamics, but the role of genetic variation is much less well characterized. To provide a novel perspective on how telomeric variation relates to genetic variability, we longitudinally sampled individuals across a narrow hybrid zone (n = 127 samples), wherein two <em>Manacus </em>species characterized by contrasting genome-wide heterozygosity interbreed. We measured individual (n = 66) and population (n = 3) differences in genome-wide heterozygosity and, among hybrids, amount of genetic admixture using RADseq-generated SNPs. We tested for population differences in telomere lengths and telomere dynamics. We then examined how telomere lengths and telomere dynamics covaried with genome-wide heterozygosity within populations. Hybrid individuals exhibited longer telomeres, on average, than individuals sampled in the adjacent parental populations. No population differences in telomere dynamics were observed. Within the parental population characterized by relatively low heterozygosity, higher genome-wide heterozygosity was associated with shorter telomeres and higher rates of telomere shortening – a pattern that was less apparent in the other populations. All of these relationships were independent of sex, despite the contrasting life histories of male and female manakins. Our study highlights how population comparisons can reveal interrelationships between genetic variation and telomeres, and how naturally occurring hybridization and genome-wide heterozygosity can relate to telomere lengths and telomere dynamics.</p>
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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)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
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.