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165 results for “interspecific variation”
Data from: Interspecific variation in post-disturbance growth responses of a savanna tree community and its implications for escaping the fire trap
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Data from: Tropical tree height and crown allometries for the Barro Colorado Nature Monument, Panama: a comparison of alternative hierarchical models incorporating interspecific variation in relation to life history traits
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Supplementary data and files for: The importance of contact zones for distinguishing interspecific from intraspecific geographic variation
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Data from: Local climate determines intra- and interspecific variation in sexual size dimorphism in mountain grasshopper communities
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Data from: Intra- and interspecific niche variation as reconstructed from stable isotopes in two ecologically different Ethiopian Rift Valley lakes
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Cis-regulatory variation in the shavenbaby gene underlies intraspecific phenotypic variation, mirroring interspecific divergence in the same trait
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Temporal and interspecific dietary variation in wintering ducks in agricultural landscapes
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Data from: Interspecific variation in ploidy as a key plant trait outlining local extinction risks and community patterns in fragmented landscapes
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Body size and environment influence both intraspecific and interspecific variation in daily torpor use across hummingbirds
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Data from: Sexual selection and population divergence III. Interspecific and intraspecific variation in mating signals
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Interspecific and intra-shell stable isotope variation among the Red Sea giant clams
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Data from: Intraspecific and interspecific variation in thermotolerance and photoacclimation in Symbiodinium dinoflagellates
Light and temperature are major drivers in the ecology and biogeography of symbiotic dinoflagellates living in corals and other cnidarians. We examined variations in physiology among 11 strains comprising five species of clade A Symbiodinium. We grew cultures at 26°C (control) and 32°C (high temperature) over a duration of 18 days while measuring growth and photochemical efficiency (Fv/Fm). Responses to thermal stress ranged from susceptible to tolerant across species and strains. Most strains exhibited a decrease in cell densities and Fv/Fm when grown at 32°C. Tolerance to high temperature (T32) was calculated for all strains, ranging from 0 (unable to survive at high temperature) to 1 (able survive at high temperature). There was substantial variation in thermotolerance across species and among strains. One strain had a T32 close to 1, indicating that growth was not reduced at 32°C for only this one strain. To evaluate the combined effect of temperature and light on physiological stress, we selected three strains with different levels of thermotolerance (tolerant, intermediate and susceptible) and grew them under five different light intensities (65, 80, 100, 240 and 443 µmol quanta m−2 s−1) at 26 and 32°C. High irradiance exacerbated the effect of high temperature, particularly in strains from thermally sensitive species. This work further supports the recognition that broad physiological differences exist not only among species within Symbiodinium clades, but also among strains within species demonstrating that thermotolerance varies widely between species and among strains within species.
Interspecific variation in evaporative water loss and temperature response, but not metabolic rate, among hibernating bats
<p>Hibernation is widespread among mammals in a variety of environmental contexts. However, few experimental studies consider interspecific comparisons, and for many unstudied (or understudied) species we must assume the underlying physiology of hibernation is comparable to the relatively few species that have been studied in detail. Studies of interspecific variation provide insight into general patterns of hibernation strategies. We studied 13 species of free-living bats, including populations spread over thousands of kilometers and diverse habitats. We measured torpid metabolic rate and evaporative water loss (two key parameters for understanding hibernation energetics) across a range of temperatures. Response to ambient temperature varied among species, but all species achieved similar minimum torpid metabolic rate. Conversely, evaporative water loss varied among species and our results suggest two general hibernation strategies in North American bats, representing high and low evaporative water loss groups. Notably, species that have suffered population declines due to white-nose syndrome fall in the high evaporative water loss group and less affected species in the low evaporative water loss group. Documenting general patterns of physiological diversity, and associated ecological implications, contributes to broader understanding of biodiversity, and may help predict which species are at greater risk of environmental and anthropogenic stressors.</p>
Fig. 12 in Interspecific Variation In Moschiola, The Indian Chevrotain
Fig. 12. Skins of Moschiola, ventral view, to illustrate differences in length of limbs. Two skins of approximately similar size have been laid with the base of the hindlimbs in equivalent positions; the hooves of the Dry Zone skin reach much further forward. Left to right: Moschiola kathygre, new species (SLNM 83A), M. meminna (SLNM 83G).
Fig. 1 in Relationships between morphology, diet and spatial distribution: testing the effects of intra and interspecific morphological variations on the patterns of resource use in two Neotropical Cichlids
Fig. 1. Dispersion of the scores of the first two PCA axes, calculated with the variance matrix of 22 ecomorphological indices. a) Scores classified by the type of environment; b) Scores classified by food resources, where: Emp = empty, Cru = crustacean, Aqu = aquatic insect, Fis = fish, Mol = mollusk, Hig = higher plant, Det = detritus. Dashed line: Crenicichla britskii; dotted line: Satanoperca pappaterra. ARA = Aspect ratio of the anal fin; ARC = Aspect ratio of the caudal fin; ARPt = Aspect ratio of the pectoral fin; ARPv = Aspect ratio of the pelvic fin; PI = Protrusion index; RAA = Relative area of the anal fin; RAD = Relative area of the dorsal fin; RAE = Relative area of the eye; RAPt = Relative area of the pectoral fin; RAPv = Relative area of the pelvic fin; RHM = Relative height of the mouth; RHPd = Relative width of the caudal peduncle; RWPd = Relative width of the caudal peduncle.
Fig. 4 in Does size matter for horny beetles? A geometric morphometric analysis of interspecific and intersexual size and shape variation in Colophon haughtoni Barnard, 1929, and C. kawaii Mizukami, 1997 (Coleoptera: Lucanidae)
Fig. 4 Box plots and deformation grids showing size variations and shape deformations in Colophon beetles: female Colophon, male C. haughtoni and male C. kawaii. Size was measured as natural log transformed centroid size (LnCS). Deformation grids show the shape changes related to size from the smallest to the largest individuals. Values in parentheses are the magnification applied to improve visualisation of shape deformations
FIG. 6 in Quaternary and Recent shells of Ocenebra erinaceus (Linnaeus, 1758) and O. brevirobusta Houart, 2000 (Mollusca, Muricidae, Ocenebrinae): reflections on the intra- and interspecific variations
FIG. 6. — Simplistic representation of the ontogeny of the spiral cords of Ocenebra erinaceus (Linnaeus, 1758) (population from Malaga, Spain). Abbreviations: ABP, abapical primary cord of the siphonal canal; abs, abapical secondary cord of the sutural ramp; adis, adapical secondary cord of the siphonal canal; ADP, adapical primary cord of the siphonal canal; ads, adapical secondary cord of the sutural ramp; IP, infrasutural primary cord; MP, median primary cords of the siphonal canal; ms, median secondary cord of the siphonal canal; P1, shoulder cord; P2-P6, primary cords of the convex part of the whorl (w.); s1-s6, secondary cords of the convex part of the whorl.
Figure 5 in Intra- and interspecific skull variation in two sister species of the subterranean rodent genus Ctenomys (Rodentia, Ctenomyidae): coupling geometric morphometrics and chromosomal polymorphism
Figure 5. Shape differences in the skulls of Ctenomys torquatus and Ctenomys pearsoni: columns correspond to dorsal, ventral, and lateral views, respectively. The first row corresponds to the intersexual patterns of shape variation between male (grey lines) and female (dark lines) specimens. The second row represents interspecific patterns of shape variation between C. torquatus (dark lines) and C. pearsoni (grey lines). The third and fourth rows correspond to intraspecific differences between populations of C. torquatus with 2n = 44 from Brazil (grey lines) and from Uruguay (44u) (dark lines), and populations of C. pearsoni with 2n = 70 (dark lines) and 2n = 66 (grey lines), respectively. The shape differences are amplified ¥ 2.
Figure 1 in Intra- and interspecific skull variation in two sister species of the subterranean rodent genus Ctenomys (Rodentia, Ctenomyidae): coupling geometric morphometrics and chromosomal polymorphism
Figure 1. Map with sampled populations of Ctenomys torquatus from southern Brazil (1–17) and northern Uruguay (18–20), and for Ctenomys pearsoni (21–23) from southern Uruguay. Detailed information of voucher specimens are listed in Appendix 1, following the map numbering.
Figure 1 in Intraspecific or interspecific variation: delimitation of species boundaries within the genus Gammarus (Crustacea, Amphipoda, Gammaridae), with description of four new species
Figure 1. Sample sites for the species of Gammarus from China.
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These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
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.