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113 results for “diet variation”
Data from: When the mean no longer matters: developmental diet affects behavioral variation but not population averages in the house cricket (Acheta domesticus)
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Data from: Variation in host plant usage and diet breadth predict sibling preference and performance in the neotropical tortoise beetle Chelymorpha alternans (Coleoptera: Chrysomelidae: Cassidinae)
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Spatial and temporal variation in the diet of introduced sambar deer (Cervus unicolor) in an alpine landscape
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Raw data used in: Variations in effects of ectosymbiotic microbes on the growth rates among different species and genotypes of Daphnia fed different algal diets
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Data from: Prairie dogs, cattle subsidies, and alternative prey: Seasonal and spatial variation in coyote diet in a temperate grassland
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Resource diversity promotes among-individual diet variation, but not genomic diversity, in lake stickleback
Many generalist species consist of specialized individuals that use different resources. This within-population niche variation can stabilize population and community dynamics. Consequently, ecologists wish to identify environmental settings that promote such variation. Theory predicts that environments with greater resource diversity favor ecological diversity (via disruptive selection or plasticity). Alternatively, niche variation might be a side-effect of neutral genomic diversity in larger populations. We tested these alternatives in a metapopulation of threespine stickleback. Stickleback consume benthic and limnetic invertebrates, focusing on the former in small lakes, the latter in large lakes. Intermediate-sized lakes support generalist stickleback populations using an even mixture of the two prey types, due to greater among-individual variation in diet and morphology. In contrast, genomic diversity increases with lake size. Thus, phenotypic diversity and neutral genetic polymorphism are decoupled: trophic diversity being greatest in intermediate-sized lakes with high resource diversity, whereas neutral genetic diversity is greatest in the largest lakes.
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.
FIGURE 3 in Spatial and temporal variation of the diet of the flag tetra Hyphessobrycon heterorhabdus (Characiformes: Characidae) in streams of the Eastern Amazon
FIGURE 3 | Ordination of the diet of Hyphessobrycon heterorhabdus between hydrological periods in eight streams of a protected area in the Eastern Amazon, Brazil.
FIGURE 1 in Spatial and temporal variation of the diet of the flag tetra Hyphessobrycon heterorhabdus (Characiformes: Characidae) in streams of the Eastern Amazon
FIGURE 1 | Streams sampled during the dry period of 2010 and the flood period of 2011 in the Caxiuanã National Forest, Eastern Amazon, State of Pará, Brazil.
Figure 5 from: Rosenfeld S, Marambio J, Ojeda J, Rodríguez JP, González-Wevar C, Gerard K, Contador T, Pizarro G, Mansilla A (2018) Trophic ecology of two coexisting Sub-Antarctic limpets of the genus Nacella: Spatio-temporal variation in food availability and diet composition of Nacella magellanica and N. deaurata in the Sub-Antarctic Ecoregion of Magellan . ZooKeys 738: 1-25. https://doi.org/10.3897/zookeys.738.21175
Figure 5 Light microscope and stereomicroscope images of microalgae, macroalgae and invertebrates taken from gut contents of Nacella deaurata.
Figure 4 from: Rosenfeld S, Marambio J, Ojeda J, Rodríguez JP, González-Wevar C, Gerard K, Contador T, Pizarro G, Mansilla A (2018) Trophic ecology of two coexisting Sub-Antarctic limpets of the genus Nacella: Spatio-temporal variation in food availability and diet composition of Nacella magellanica and N. deaurata in the Sub-Antarctic Ecoregion of Magellan . ZooKeys 738: 1-25. https://doi.org/10.3897/zookeys.738.21175
Figure 4 Light microscope and stereomicroscope images of microalgae, macroalgae and invertebrates taken from gut contents of Nacella magellanica.
Figure 3 from: Rosenfeld S, Marambio J, Ojeda J, Rodríguez JP, González-Wevar C, Gerard K, Contador T, Pizarro G, Mansilla A (2018) Trophic ecology of two coexisting Sub-Antarctic limpets of the genus Nacella: Spatio-temporal variation in food availability and diet composition of Nacella magellanica and N. deaurata in the Sub-Antarctic Ecoregion of Magellan . ZooKeys 738: 1-25. https://doi.org/10.3897/zookeys.738.21175
Figure 3 Non-metric multidimensional scaling of the dietary composition recorded in the gut contents of the Nacella species in Puerto del Hambre (a, c) and Otway Sound (b, d). a, b correspond to the winter months, and c, d to the summer months. The dashed line indicates the separation between species.
Figure 2 from: Rosenfeld S, Marambio J, Ojeda J, Rodríguez JP, González-Wevar C, Gerard K, Contador T, Pizarro G, Mansilla A (2018) Trophic ecology of two coexisting Sub-Antarctic limpets of the genus Nacella: Spatio-temporal variation in food availability and diet composition of Nacella magellanica and N. deaurata in the Sub-Antarctic Ecoregion of Magellan . ZooKeys 738: 1-25. https://doi.org/10.3897/zookeys.738.21175
Figure 2 Percentage contribution SIMPER of items in the gut contents of the Nacella species in Puerto del Hambre and Otway Sound for the winter and summer months. The contribution limit was 90% of the total dietary composition. SIMPER analysis shows the dissimilarity between the species of Nacella in the two localities (average dissimilarity in bold and on the bar). The contribution limit was 75% of the total dietary composition. M = Macroalgae (with colours) and I = Invertebrates (with grey scale). Structural hardness of the thallus for macroalgae: th = thin filaments, cf = corticated filaments, clf = cylinder-like form and lm= leathery macrophyte. Functional group for invertebrates: s = sessile and m = mobile.
Figure 1 from: Rosenfeld S, Marambio J, Ojeda J, Rodríguez JP, González-Wevar C, Gerard K, Contador T, Pizarro G, Mansilla A (2018) Trophic ecology of two coexisting Sub-Antarctic limpets of the genus Nacella: Spatio-temporal variation in food availability and diet composition of Nacella magellanica and N. deaurata in the Sub-Antarctic Ecoregion of Magellan . ZooKeys 738: 1-25. https://doi.org/10.3897/zookeys.738.21175
Figure 1 Location of study sites, circle = Puerto del Hambre and square = Otway Sound. Abbreviations: a, d general view of both localities b, e images of the middle intertidal c, f images of the lower intertidal.
Figure 4 in Seasonal variation of small mammals in the diet of the barn owl (Tyto alba) in the Drinos River valley, southern Albania
Figure 4. Seasonal variation in biomass (%) of small mammal species in the diet of barn owls in the Drinos valley.
0 in Seasonal variation of small mammals in the diet of the barn owl (Tyto alba) in the Drinos River valley, southern Albania
0% Autumn (F%) W nter (F%) Spr ng (F%) Summer (F%) Figure 3. Seasonal variation in frequency (%) of small mammal species in the diet of barn owls in the Drinos valley.
Figure 1 in Geographical variation in morphometry, craniometry, and diet of a mammalian species (Stone marten, Martes foina) using data mining
Figure 1. Landmarks of craniometrical variables (1: length of jaw, 2: distance between the mastoid apophyses, 3: nose width, 4: width of cheekbones, 5: palate length, 6: distance between angular and coronary apophyses, 7: intraophthalmic width, 8: face length, 9: condylobasal length).
Sample-specific data from "The Influence of Seasonal Variation in Wild Pig Diet on Impacts to a Subtropical Agroecosystem" published in Ecosphere
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Data for: Causes and consequences of variation in diet composition of nestling Canada jays
<p>Diet quality during development can impact growth, physiology, behaviour, and survival. The Canada jay is a resident boreal passerine that caches a wide variety of perishable food items in late summer and autumn for its over-winter survival and late-winter reproduction. A previous experiment found evidence that food supplementation of Canada jay pairs during the nestling period had a positive effect on the condition of their nestlings. However, given that foods cached by adults vary widely in nutritional content, the composition of nestling diets could also have an important influence on offspring development. In a population of Canada jays in Algonquin Provincial Park, Ontario, Canada, we investigated the influence of environmental conditions before and during the breeding season on nestling diet composition and the consequences of nestling diet composition on the body condition of nestlings and on their subsequent survival. Using stable-carbon (δ13C) and -nitrogen (δ15N) isotopes, we estimated the proportion of three food groups (vertebrates+human food, invertebrates and plants) in feathers from almost 200 nestlings. Nestling diet in March and April was influenced by environmental conditions 5 – 6 months prior to hatching, with warmer and more variable autumn temperatures associated with a greater proportion of vertebrate flesh and human food in the diet. However, the proportion of vertebrates and human food in the diet had no influence on nestling body condition or whether an individual was observed the following fall. Our results, in conjunction with previous work on Canada jays, suggest that the quantity of food available to a nestling during development may be more important than diet composition.</p> <p> </p>
Fig. 1 in Spatial, seasonal and ontogenetic variation in the diet of Astyanax aff. fasciatus (Ostariophysi: Characidae) in an Atlantic Forest river, Southern Brazil
Fig. 1. Monthly average precipitation and temperature for the rio das Pedras region, Guarapuava, PR, Brazil. (Data refer to the period of January 1976 to December 2000). Source: SIMEPAR.
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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.