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121 results for “ecological factors”
FIGURE 3 in The integration processes of the distributional patterns in the Mexican Transition Zone: Phyletic, paleogeographic and ecological factors of a case study
FIGURE 3. Onthophagus halffteri, male dorsal view.
Figure 1 in Parasite fauna of the grey mullet Mugil cephalus L. 1758, and its relationship with some ecological factors in Lower Kızılırmak Delta located by the Black Sea, Turkey
Figure 1. Sampling sites in the Lower Kızılırmak Delta.
Figure 1 in Fly parasitism in Papuan frogs, with a discussion of ecological factors influencing evolution of life-history differences
Figure 1. Preserved specimen of Rana supragrisea showing enlarged swellings caused by three (two on right side, one on left) infesting larvae of Batrachomyia krausi. Apertures in the skin used to maintain larval access to air are clear on the right; larval respiratory spiracles project from the aperture on left.
Punctuational ecological changes rather than global factors drive species diversification and the evolution of wing phenotypes in Morpho butterflies
<p>Assessing the relative importance of geographical and ecological drivers of evolution is paramount to understand the diversification of species and traits at the macroevolutionary scale. Here, we use an integrative approach, combining phylogenetics, biogeography, ecology, and quantified phenotypes to investigate the drivers of both species and phenotypic diversification of the iconic Neotropical butterfly genus <i>Morpho</i>. We generated a time-calibrated phylogeny for all known species and inferred historical biogeography. We fitted models of time-dependent (accounting for rate heterogeneity across the phylogeny) and paleoenvironment-dependent diversification (accounting for global effect on the phylogeny). We used geometric morphometrics to assess variation of wing size and shape across the tree, and investigated their dynamics of evolution. We found that the diversification of <i>Morpho</i> is best explained when considering variable diversification rates across the tree, possibly associated with lineages occupying different microhabitat conditions. First, a shift from understory to canopy was characterized by an increased speciation rate partially coupled with an increasing rate of wing shape evolution. Second, the occupation of dense bamboo thickets accompanying a major host-plant shift from dicotyledons towards monocotyledons was associated with a simultaneous diversification rate shift and an evolutionary "jump" of wing size. Our study points to a diversification pattern driven by punctuational ecological changes instead of a global driver or biogeographic history.</p>
Drivers of intraspecific differentiation of the alpine cold tolerant herb Notopterygium oviforme: the roles of isolation by distance and ecological factors
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Punctuational ecological changes rather than global factors drive species diversification and the evolution of wing phenotypes in Morpho butterflies
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Identifying relationships between multi-scale social-ecological factors to explore ungulate health in a Western Kazakhstan rangeland
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Data from: Maintenance of deceptive gifts in a natural spider population: ecological and demographic factors
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Unraveling the roles of various ecological factors in seedling recruitment to facilitate plant regeneration
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Data from: Interactions between ecological factors in the developmental environment modulate pupal and adult traits in a polyphagous fly
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Data from: The role of ecological factors in determining phylogeographic and population genetic structure of two sympatric island skinks (Plestiodon kishinouyei and P. stimpsonii)
We conducted comparative phylogeographic and population genetic analyses of Plestiodon kishinouyei and P. stimpsonii, two sympatric skinks endemic to islands in the southern Ryukyus, to explore different factors that have influenced population structure. Previous phylogenetic studies using partial mitochondrial DNA (mtDNA) indicate similar divergence times from their respective closest relatives, suggesting that differences in population structure are driven by intrinsic attributes of either species rather than the common set of extrinsic factors that both presumably have been exposed to throughout their history. In this study, analysis of mtDNA sequences and microsatellite polymorphism demonstrate contrasting patterns of phylogeography and population structure: P. kishinouyei exhibits a lower genetic variability and lower genetic differentiation among islands than P. stimpsonii, consistent with recent population expansion. However, historical demographic analyses indicate that the relatively high genetic uniformity in P. kishinouyei is not attributable to recent expansion. We detected significant isolation-by-distance patterns among P. kishinouyei populations on the land bridge islands, but not among P. stimpsonii populations occurring on those same islands. Our results suggest that P. kishinouyei populations have maintained gene flows across islands until recently, probably via ephemeral Quaternary land bridges. The lower genetic variability in P. kishinouyei may also indicate smaller effective population sizes on average than that of P. stimpsonii. We interpret these differences as a consequence of ecological divergence between the two species, primarily in trophic level and habitat preference.
Dataset for Influence of ecological and social factors on huddling behaviour and cluster organisation in Japanese macaques (Macaca fuscata)
<p>Dataset for Influence of ecological and social factors on huddling behaviour and cluster organisation in Japanese macaques (Macaca fuscata)</p> <p><span>Huddling behaviour is present in many animal species. This behaviour involves maintaining close physical contact with conspecifics to minimise heat loss and, in general, reduce energy expenditure. Additionally, this behaviour also facilitates complex social interactions within a population. In Japanese macaques, this behaviour is observed in many populations across Japan, including Shodoshima, where huddling clusters can reach up to 100 individuals in winter. Based on several studies on this species, it appears that huddling, or <span> </span>in Japanese, is influenced by both meteorological factors and social relationships between individuals. The objective of this study is to understand the determinants that drive the expression, variation, and organisation of huddling behaviour. Two hypotheses were formulated. The first hypothesis posits that the formation and variations in the size and number of clusters are influenced by meteorological factors, while the second hypothesis suggests that the number and position of individuals within a cluster is related to existing relationships between individuals. To test these, data on the number, size, and individuals composing a cluster were collected, allowing building huddling social networks. Simultaneously, meteorological measurements were taken, along with observations on dominance and grooming interactions between individuals. This allowed us to create several statistical models and social networks for comparison. Our results suggest that the initiation of huddling is mainly related to solar radiation energy, while variations in number and size could be explained by temperature. Moreover, the organisation within a cluster is not random but reflects relationships between individuals. However, it is not a single parameter but rather a combination of social relationships that underpin the organisation of individuals within clusters.</span></p>
Analysis of Influencing Factors of Preoperative Frailty in Elderly Patients With Gastric Cancer Based on the Health Ecology Theory
ClinicalTrials.gov study NCT04929587. IPD Sharing: UNDECIDED. Countries: 1. Publications: 0.
Data from: The role of ecological factors in determining phylogeographic and population genetic structure of two sympatric island skinks (Plestiodon kishinouyei and P. stimpsonii)
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FIGURE 21 in The integration processes of the distributional patterns in the Mexican Transition Zone: Phyletic, paleogeographic and ecological factors of a case study
FIGURE 21. Distribution of the O. cyanellus species line, which hypothetically represents oldest stage of evolution of the O. chevrolati species group.
FIGURE 22 in The integration processes of the distributional patterns in the Mexican Transition Zone: Phyletic, paleogeographic and ecological factors of a case study
FIGURE 22. Comparison of the distribution areas of the O. hippopotamus and O. chevrolati species lines.
FIGURE 9 in The integration processes of the distributional patterns in the Mexican Transition Zone: Phyletic, paleogeographic and ecological factors of a case study
FIGURE 9. Main orographic formations of Mexico. Original map prepared by Violeta Halffter and used on many occasions in the biogeographic studies of the Mexican Transition Zone. I, Sierra Madre Occidental; II, Sierra Madre Oriental; III, Mexican Plateau; IV, Trans-Mexican Volcanic Belt; V, Balsas Basin; VI, Sierra Madre del Sur; VII, Sierra Madre de Chiapas; VIII, Chiapas Highlands; IX, Guatemalan Plateau; X, Central American Nucleous.
Figure 4 in Evolution of molar shape in didelphid marsupials (Marsupialia: Didelphidae): analysis of the influence of ecological factors and phylogenetic legacy
Figure 4. Third lower molar (m3) shape variation along the first two principal components (PC) from the PCA of the Procrustes coordinates, showing the distribution of taxonomic groups. Deformation grids show the extreme shape of each PC.
FIGURE 20 in The integration processes of the distributional patterns in the Mexican Transition Zone: Phyletic, paleogeographic and ecological factors of a case study
FIGURE 20. Distribution of the O. aztecus species complex.
FIGURE 15 in The integration processes of the distributional patterns in the Mexican Transition Zone: Phyletic, paleogeographic and ecological factors of a case study
FIGURE 15. Location of the Cuetzalan cave associated fauna.
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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.