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113 results for “diet variation”
Fig. 2 in Variation in diet of frugivorous bats in fragments of Brazil's Atlantic Forest associated with vegetation density
Fig. 2.—Carbon and nitrogen isotopic ratios for each bat population presented as mean and standard deviation. Each panel represents one species–season pairing: Al-H is Artibeus lituratus in the Humid season; Cp-H is Carollia perspicillata in the Humid season; Cp-S is C. perspicillata in the super-humid season; Sl-S is Sturnira lilium in the super-humid season. Fragments and population designations correspond to fragments in Brazil's Atlantic Forest in Fig. 1. Shades correspond to fragment where the sample was collected ordered by area. Darker greens are largest fragments; darkest purple are smallest fragments.
Fig. 1 in Variation in diet of frugivorous bats in fragments of Brazil's Atlantic Forest associated with vegetation density
Fig. 1.—Map of study sites situated in Brazil's Atlantic Forest, Rio de Janeiro State, Brazil. Sites in Reserva Ecologica de Guapiacu ("REGUA") and fragments (F) adjacent to this area are indicated as points. Thirteen areas were sampled and allocated as REGUA, REGUA2, REGUA3 for those sampled in the reserve (considered repeated efforts sampling in the same fragment), and 10 fragments designated as F1 through F10. This figure was constructed using ESRI base maps and existing maps available through Instituto Brasileiro de Geografia (IBGE) (SOS Mata Atlântica (2009) (www.sosma.org). Used under commons licence). Figure is adapted from Teixeira (2019).
FIG. 6 in Cranial shape and diet variation in Myotis species (Chiroptera: Vespertilionidae): testing the relationship between form and function
FIG. 6. Fitted regression line and data points for Procrustes distances between configurations of the mandibular process region and the stretch factor of the masseter muscle. FP = facultative piscivorous species. P = piscivorous species, I = insectivorous species. The regression equation is presented
FIG. 3 in Cranial shape and diet variation in Myotis species (Chiroptera: Vespertilionidae): testing the relationship between form and function
FIG. 3. Ordination plots of the first two canonical axes from two skull modules among dietary groups. A — Ordination plot of the first two canonical axes from parieto-occipital region (skull module 1) with deformation grids derived of each the canonical axis. The horizontal arrow indicated the direction of change in M. vivesi with respect to the consensus shape. The vertical arrow indicated the directions of change in insectivores with respect to the consensus shape; B — Ordination plot of the first two canonical axes from frontal-maxillary region (skull module 2) with deformation grids derived of each the canonical axis. The vertical arrow indicated the direction of change in M. vivesi with respect to the consensus shape. The horizontal arrow indicated the directions of change in facultative piscivores with respect to the consensus shape. Three diets were compared: insectivorous species (×), and facultative piscivorous species (●) and piscivorous species (é)
FIG. 2 in Cranial shape and diet variation in Myotis species (Chiroptera: Vespertilionidae): testing the relationship between form and function
FIG. 2. Image of an articulated skull and mandible used to measure the origin (Ot) and insertion (It) of the temporal muscle, and the origin (Om) and insertion (Im) of the masseter muscle. The angles between origin and insertion distances for temporal (OIt) and masseter muscles (OIm) were drawn
FIG. 4 in Cranial shape and diet variation in Myotis species (Chiroptera: Vespertilionidae): testing the relationship between form and function
FIG. 4. Ordination plots of the first two canonical axes from two mandibular modules among dietary groups. A — Ordination plot of the first two canonical axes from mandibular process area with deformation grids derived of each the canonical axis. The direction of changes in M. vivesi with respect to the consensus shape was indicated for the horizontal arrow. The directions of change in facultative piscivorous and insectivorous species with respect to the consensus shape were indicated for the vertical arrows; B — Ordination plot of the first two canonical axes from the alveolar region with deformation grids derived of each the canonical axis. The directions of change in M. vivesi and facultative piscivores with respect to the consensus shape were indicated for the double-headed arrow. Three dietary groups were compared: insectivorous species (×), facultative piscivorous species (●), and piscivorous species (ì)
FIG. 5 in Cranial shape and diet variation in Myotis species (Chiroptera: Vespertilionidae): testing the relationship between form and function
FIG. 5. Stretch factors of the masticatory muscles within genus Myotis. A — Stretch factors for the masseter muscle in each dietary group; B — Stretch factor for the temporal muscle in each dietary group. Data were presented with median, interquartile 25–75%, and minimum–maximum values indicated in box plots. Sample sizes appear below each box plot. Letters indicate differences among groups
FIG. 1 in Cranial shape and diet variation in Myotis species (Chiroptera: Vespertilionidae): testing the relationship between form and function
FIG. 1. Four configurations of points drew to register the shape of two skull and two mandibular characters in 22 Myotis species. A — Parieto-occipital region with 32 points, 1–32, lateral view; B — Frontal-maxillary region with 20 points, 1–20, lateral view; C — Mandible process area with 22 points, 1–18, 33–36, in lateral view. D — Alveolar region with 14 points, 19–32, lateral view
Spatial and temporal variation in the diet of introduced sambar deer (Cervus unicolor) in an alpine landscape
<p><strong>Context</strong>. In south-eastern Australia, the abundance and distribution of non-native sambar deer (<em>Cervus</em> <em>unicolor</em>) has increased dramatically in alpine environments. As a result, significant concern surrounds the potential for the species to impact rare plant species and vegetation communities through browsing.</p> <p><strong>Aims</strong>. We aimed <span>to determine the diversity of the plant species eaten by sambar deer in the Alpine National Park and to understand any spatial and temporal variation in deer diets.</span></p> <p><strong>Methods</strong>. We collected 90 sambar deer faecal pellet samples over a three-month flowering period across two contrasting study sites with differing elevation, vegetation, and underlying geology. We performed DNA sequencing using the ITS2 gene region and assigned dietary items to the lowest taxonomic level possible. The frequency of occurrence and sequencing read depth of each dietary item were calculated to investigate the diet of sambar deer at spatial and temporal scales, and dietary preferencing was assessed by comparing the frequency of occurrence of dietary items to the observation records for each dietary item in the study area.</p> <p>Key results. We detected a total of 369 unique plant <span>Operational Taxonomic Units </span>(OTUs) from sambar deer faecal samples, representing 35 families and 80 genera. Considerable variation in the diet was observed over small spatial scales, and evidence of temporal diet variation was noted in one of the study sites. We detected <span>Silky Snow-daisy (<em>Celmisia</em> <em>sericophylla</em>), which is currently listed as critically endangered under the Flora and Fauna Guarantee Act 1988, and </span>Hawkweed (<em>Pilosella</em> spp.), a highly invasive, non-native taxon which is sparingly established in Alpine ecosystems.</p> <p><strong>Conclusions</strong>. Sambar deer displayed an intermediate feeder behaviour in alpine environments, foraging on a variety of forbs and shrubs, however, forbs were the dominant dietary items. The spatial variation observed in the diet of sambar deer suggests that individual deer are unlikely to be dispersing widely while foraging. </p> <p><strong>Implications</strong>. Our results emphasise the need for careful evaluation of sambar deer impacts within individual sites and at small spatial scales. The detection of species of conservation significance in the diet indicates that the presence of sambar deer should be considered a significant risk to biodiversity in areas of high conservation value.</p>
Impact of FTO Gene Variation on Body Composition, Lipid Profile, Insulin Resistance, Advanced Glycation End-Products and Ghrelin Levels in Response to Hypocaloric, Protein Rich-Diet
ClinicalTrials.gov study NCT06426017. IPD Sharing: NO. Countries: 1. Publications: 4.
Data from: Variation in red fox Vulpes vulpes diet in five continents
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Diet variation driven by color vision phenotype in wild capuchin monkeys
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Data from: Latitudinal variation in ecological opportunity and intraspecific competition indicates differences in niche variability and diet specialization of Arctic marine predators
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Data from: Impact of diet and individual variation on intestinal microbiota composition and fermentation products in obese men
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Data from: Spatio-temporal and demographic variation in the diet of New Zealand lesser short-tailed bats (Mystacina tuberculata)
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Data from: A combined mesowear analysis of Mexican Bison antiquus shows a generalist diet with geographical variation
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Spatial variation in diet-microbe associations across populations of a generalist North American carnivore
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Mechanisms of individual variation in large herbivore diets: Roles of spatial heterogeneity and state-dependent foraging
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Data from: High interannual variation in the diet of a tropical forest frugivore (Hylobates lar)
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Data from: Variation in zoo diets, offerings of leafy browse, and body condition scores in Matschie’s tree kangaroos (Dendrolagus matschiei) and their effects on the composition of the gut microbiome
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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.