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1,112 results for “canals”
Data from: A model of developmental canalization, applied to human cranial form
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Data from: Effects of environmental disturbance on phenotypic variation: an integrated assessment of canalization, developmental stability, modularity and allometry in lizard head shape
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Selection on phenotypic plasticity favors thermal canalization
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Morphological canalization, integration, and plasticity in response to population density in Abutilon theophrasti: Influences of soil conditions and growth stages
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Data from: An empirical test for a zone of canalization in thermal reaction norms
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Data from: Role of recent and old riverine barriers in fine scale population genetic structure of Geoffroy's Tamarin (Saguinus geoffroyi) in the Panama Canal Watershed
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Data from: Plasticity through canalization: the contrasting effect of temperature on trait size and growth in Drosophila
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Data from: Sex differences in developmental plasticity and canalization shape population divergence in mate preferences
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Associations among cotyledon developmental stability, canalization and phenotypic plasticity in response to shading and burial depth in five herbaceous species at early seedling stage
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Canalization of seasonal phenology in the presence of developmental variation: seed dormancy cycling in an annual weed
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Soil chemistry and dry season intensity, Panama Canal Area
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Macroevolutionary patterns of body plan canalization in euarthropods
<p>Reconstructing patterns of macroevolution has become a central endeavor in palaeobiology, because it offers insight into evolutionary models shaping the history of life. As the most diverse and abundant animals since the Cambrian period, arthropods provide copious data to elucidate the emergence of body plans in metazoan lineages. However, information provided by fossils on the tempo and mode of this phenomenon has lacked a recent synthesis. Here, I investigate macroevolutionary patterns of morphological evolution in Euarthropoda using a combined extinct and extant dataset optimized for multivariate analyses. Overall ordination patterns between the main morphogroups are consistent with another, independently-coded, extant-only dataset providing molecular and morphological rates of evolution. Based on a "deep split" phylogenetic framework, total-group Mandibulata and Arachnomorpha emerge as directional morpho-anatomical lineages, with basal fossil morphogroups showing heterogeneously spread-out occupations of the morphospace. In addition to a more homogeneous morphological variation, new morphogroups arose by successive reductions of translation distances; this pattern was interrupted only by terrestrialization events and the origin of pancrustaceans. A displaced optimum type of model is proposed to explain the fast assembly of canalized body plans during the Cambrian, with basal fossil morphogroups fitting intermediate fitness peaks in a moving adaptive landscape. Given time constraints imposed by the palaeontological evidence, and owing to the interplay between canalization and modularity, as well as a decoupling between molecular and morphological rates, the rise of euarthropods would support the view that the swiftness of the Cambrian explosion was mostly associated with the build-up of genetic regulatory networks.</p>
Fig. 8 in New sponge species from Seno Magdalena, Puyuhuapi Fjord and Jacaf Canal (Chile)
Fig. 8. Spicules of Biemna aurantiaca Bertolino, Costa & Pansini sp. nov., holotype (CILE 20; MSGN 61497). A. Sinuous styles. B. Tylostyles. C. Raphids I. D. Raphids II. E. Sigma I. F. Sigma II.
Fig. 11 in New sponge species from Seno Magdalena, Puyuhuapi Fjord and Jacaf Canal (Chile)
Fig. 11. Biemna typica Bertolino, Costa & Pansini sp. nov., holotype (CILE 28; MSGN 61495). A. The holotype in life. B. Plumose skeleton. C–D. Ectosomal skeleton.
Fig. 15 in New sponge species from Seno Magdalena, Puyuhuapi Fjord and Jacaf Canal (Chile)
Fig. 15. Darwinella pronzatoi Bertolino, Costa & Pansini sp. nov., holotype (CILE 100; MSGN 61500). A. The holotype in life. B. Dendritic fibres. C. Horny styles
Fig. 3 in New sponge species from Seno Magdalena, Puyuhuapi Fjord and Jacaf Canal (Chile)
Fig. 3. Axinella cylindrica Bertolino, Costa & Pansini sp. nov., holotype (CILE 1; MSGN 61493). A. The holotype in life. B. Skeleton formed by a network of thin ascending plurispicular fibres. C. Extraaxial pumoreticulate skeleton. D. Skeleton differentiated in two regions, axial compressed reticulated and extra-axial plumoreticulate.
Fig. 2 in New sponge species from Seno Magdalena, Puyuhuapi Fjord and Jacaf Canal (Chile)
Fig. 2. Hymerhabdia imperfecta Bertolino, Costa & Pansini sp. nov., holotype (CILE 63; MSGN 60889). A. The holotype in life. B. Smooth styles. C. Smooth thicker tylostyles. D. Rhabdostyles. E. Rhabdostyles are often sinuous or modified in oxeas or strogyles.
Fig. 10 in New sponge species from Seno Magdalena, Puyuhuapi Fjord and Jacaf Canal (Chile)
Fig. 10. Spicules of Biemna erecta Bertolino, Costa & Pansini sp. nov., holotype (CILE 74; MSGN 61496). A. Styles. B. Tylostyles / subtylostyles. C. Raphids I. D. Raphids II. E. Sigma I. F. Sigma II.
Fig. 6 in New sponge species from Seno Magdalena, Puyuhuapi Fjord and Jacaf Canal (Chile)
Fig. 6. Spicules of Axinella coronata Bertolino, Costa & Pansini sp. nov., holotype (CILE 22; MSGN 61494). A. Tylostyles. B. Styles. C. Styles bend near the head similar to rhabdostyles. D. Thin and sinuous styles.
Fig. 4 in New sponge species from Seno Magdalena, Puyuhuapi Fjord and Jacaf Canal (Chile)
Fig. 4. Spicules of Axinella cylindrica Bertolino, Costa & Pansini sp. nov., holotype (CILE 1; MSGN 61493). A. Smooth styles. B. Rhabdostyles. C. Oxeas.
ScienceDex guides
Understand access before you commit
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.