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642 results for “ornaments”
Data from: Lifetime fitness and age-related female ornament signalling: evidence for survival and fecundity selection in the pied flycatcher
Ornaments displayed by females have often been denied evolutionary interest due to their frequently reduced expression relative to males, habitually attributed to a genetic correlation between the sexes. We estimated annual and lifetime reproductive success of female pied flycatchers (Ficedula hypoleuca) and applied capture–mark–recapture models to analyse annual survival rates in relation to the patterns of expression (absence/presence) of an ornament displayed by all males and a fraction of females. Overall, the likelihood of expressing the ornament increased nonlinearly with female age and was due to within-individual variation, not to the selective appearance or disappearance of ornament-related expression of phenotypes in the population. Accordingly, expressing the forehead patch in a given year did not influence survival probability. However, those females expressing the ornament at early ages (1–2 years old) enjoyed survival advantages throughout lifetime. Although ornamented females had higher lifetime fecundity and fledging success, their yearly reproductive performance, in terms of fledging productivity, decreased as they aged so that, late in life, ornamented females reared fewer offspring than nonexpressing females of the same age. In addition, both strategies (expressing vs. not expressing the trait) returned similar fitness payoffs in terms of recruited offspring. Our results support the hypothesis that fecundity and survival selection are involved in the displaying of this 'male' ornament by females.
Data from: Reduced sexual dichromatism, mutual ornamentation, and individual quality in the monogamous Zenaida dove, Zenaida aurita
Although variation in plumage coloration is known to occur both between and within sexes, its study remains limited to a few bird families. The Zenaida dove, Zenaida aurita, is a socially monogamous tropical columbid bird species, characterized by an overall cinnamon-brownish plumage and structural colorations on the head and neck. The species has been described as sexually dichromatic for plumage, although color differences between males and females are not obvious in the field. We investigated variation in the presumably melanin-based color of the crown, mantle, breast, and belly, in the iridescent dark-blue streaks on the head, and in the symmetric iridescent patches on the neck, over the whole spectrum visible to birds. Further, unlike most previous studies, we assessed covariation between plumage color and phenotypic traits in both males and females in relation to the putative signaling function of ornaments. Zenaida doves appeared to be slightly sexually dichromatic for the hue of pigment-based colored areas, with males being on average more reddish than females. However, this difference was not discernible when considering the avian visual system. Conversely, although the reflectance spectra of iridescent plumage did not significantly differ between sexes in brightness, chroma or spectral position of the peaks, color discrimination analyses showed that individuals should be able to perceive between- or within-sex differences in the color of the iridescent patch. In addition, several color parameters of brown and iridescent feathers were significantly related to territorial status, body condition, wing chord, and, albeit weakly, to individual multilocus heterozygosity. Overall, our results thus suggest that plumage color might be a reliable signal of quality in individuals of both sexes in this species. Further studies are needed to test the potential implication of plumage coloration in mate choice and mating patterns in the Zenaida Dove.
Data from: Factors leading to the evolution and maintenance of a male ornament in territorial species
Male ornamentation is assumed to have evolved primarily from selection by female mate choice. Yet this is only one possible reason for ornament evolution. Ornaments might also be useful in aggressive competition by improving opponent assessment between males, or they might function to enhance signal detection by making males more conspicuous in the environment. We tested both these ideas in territorial Anolis lizards in which female choice is either absent or secondary to males competing for territories that overlap female home ranges. Male tail crests only evolved in species in which territory neighbors were distant, consistent with the signal detection hypothesis. Once the tail crest had evolved, however, it seems to have become a signal in itself, with variation in the frequency and size of tail crests within species correlating with variables predicted by the aggressive competition hypothesis. Our study presents an apparent example of a male ornament in which the selection pressure leading to variation among species in ornament expression is different from the selection pressure acting on variation within species. The Anolis tail crest is therefore likely to be an exaptation. We caution that conclusions made on the evolution of male ornaments are dependent on the phylogenetic perspective adopted by a study. Studies restricted to single species are useful for identifying selection pressures in contemporary settings (i.e., the current utility of traits), but may lead to erroneous conclusions on the factors that initially lead to the origin of traits.
Data from: Untangling phylogenetical, geometrical and ornamental imprints on Early Triassic ammonoid biogeography: a similarity-distance decay study.
Ammonoids are diverse and widespread fossil shelly cephalopods that flourished in the world ocean during more than 300 million years before their total extinction, 65 million years ago. In spite of two centuries of intensive scientific studies, their mode(s) of life, and most particularly long-distance dispersal abilities remain poorly known. Here we address this question by looking at the latitudinal distribution of Early Triassic (~250 Myr) ammonoids through similarity-distance decay analyses. We examine and compare how rates of similarity-distance decay differ between various systematic, shell geometry and ornamentation groups, during the same ~3.5 myr Early Triassic time interval, in order to untangle phylogenetical, geometrical and ornamental imprints on the observed biogeographical pattern. Our data do not support any phylogenetical and shell ornamentation control on the similarity-distance decay, but rather evidence a significant effect of (sub-)adult shell geometry: most evolute morphs tend to have been more endemic than most involute ones. This result contrasts with the classical hypothesis that long-distance ammonoid dispersal mainly occurred during the earliest planktonic young stages, and thus that (sub-)adult morphological characteristics should not constrain large-scale biogeographical patterns of ammonoids. While a direct control by Sea Surface Temperature can be discarded, this result may indicate that at least some adult Triassic ammonoid morphs were good active swimmers able to achieve long-distance migrations, as observed for some present-day coleoid cephalopods.
Wooden ornament
Old wooden ornament Flat with maps Original texture: textures.com Source: Objaverse 1.0 / Sketchfab
Östra Eneby 1 Yxhällen Skepp Ornament
Laserscan of one of the boats on this panel at Himmelstalund Source: Objaverse 1.0 / Sketchfab
Christmas Ornament Reindeer
Source: Objaverse 1.0 / Sketchfab
Ornamental Corn, close up
Some of the pretty kernals of these were planted in our garden this year with some beans and squash. The bean fixes nitrogen, the corn stalks are the bean poles, and the squash overshadows weeds and protects soil from evaporative losses. While removing individually choosen colored kernals I wondered about the shapes and the close packing on the curved ends. Each kernal inflates like a ballon crowding it neighbor. Rows are easy to pick apart like dominos fall, but irregular sizes and spacings make it tougher to remove singel kernals. Nature teach us a pattern suitable for stoneworking and building walls. The maize itself; https://en.wikipedia.org/wiki/Flint_corn Protected native foods are a human right; https://mexiconewsdaily.com/news/native-corn-gets-legal-protection/ Three sisters gardening; https://www.nativeseeds.org/blogs/blog-news/how-to-grow-a-three-sisters-garden Source: Objaverse 1.0 / Sketchfab
Roman Bronze Ornament, Sarajevo Museum
Roman Bronze Ornament, Sarajevo Museum Data were collected as part of a joint research project between GDH and the Association for the Digitization and Informatisation of Cultural Heritage (DIGI.BA) in Sarajevo, in full collaboration with The Sarajevo Museum. Scanned artifacts were on display. Model was created from 476 images from a Canon 5D mk IV. All data were processed in Reality Capture. Project ID BronzeOrnament. Source: Objaverse 1.0 / Sketchfab
Decorated Ornament, Castilla-La Mancha, Spain
Circular bronze ornament decorated with star motifs and enameled (red, white, blue, yellow). from the site of Unknown, Ruidera, Castilla-La Mancha, Spain. Middle Ages? . In the collection of the Ciudad Real Museum. Catalog number DO000374. Processed in Reality Capture from 596 images. This work is part of the collaboration agreement signed in 2020 between the Junta de Comunidades de Castilla-La Mancha and Global Digital Heritage for the digitization of the Cultural Heritage of Castilla-La Mancha region. We want to publicly thank the collaboration of the Museum of Ciudad Real, especially by its director José Ignacio de la Torre. Source: Objaverse 1.0 / Sketchfab
FIGURE 3. Porcupinotus costaspinosus n in Three new species of Phyllocoptinae mites (Prostigmata: Eriophyidae) associated with ornamental plants in Brazil
FIGURE 3. Porcupinotus costaspinosus n. sp. D — Dorsal habitus of female. V — Ventral habitus of female. L — Lateral habitus of female. M — Coxigenital region of male. L1 — Leg I. L2 — Leg II. E — Empodium (enlarged).
FIGURE 2. Aculops fenestratus n in Three new species of Phyllocoptinae mites (Prostigmata: Eriophyidae) associated with ornamental plants in Brazil
FIGURE 2. Aculops fenestratus n. sp. D — Dorsal habitus of female. V — Ventral habitus of female. L — Lateral habitus of female. M — Coxigenital region of male. L1 — Leg I. L2 — Leg II. E — Empodium (enlarged).
FIGURE 1. Acaricalus souzae n in Three new species of Phyllocoptinae mites (Prostigmata: Eriophyidae) associated with ornamental plants in Brazil
FIGURE 1. Acaricalus souzae n. sp. D — Dorsal habitus of female. V — Ventral habitus of female. L — Lateral habitus of female. L1 — Leg I. L2 — Leg II. E — Empodium (enlarged). Sol — Solenidion.
FIGURE 13. Caridina conghuensis n in To " bee " or not to be—on some ornamental shrimp from Guangdong Province, Southern China and Hong Kong SAR, with descriptions of three new species
FIGURE 13. Caridina conghuensis n. sp., paratype male, cl 3.7 mm (ZMB28225; Präp. 5053–5054) (A) first pereiopod; (B) second pereiopod; (C) third pereiopod; (D) dactylus of third pereiopod; (E) fifth pereiopod; (F) dactylus of fifth pereiopod; (G) endopod of male first pleopod (flattened), (H) endopod of male first pleopod (inner view in natural shape); (I) appendix masculina on male second pleopod.
FIGURE 15 in To " bee " or not to be—on some ornamental shrimp from Guangdong Province, Southern China and Hong Kong SAR, with descriptions of three new species
FIGURE 15. Molecular phylogeny of Chinese atyids (BI, COI). Number on branches are Bayesian posterior probabilities. The scale bar indicates the substitution rate.
FIGURE 12. Caridina conghuensis n in To " bee " or not to be—on some ornamental shrimp from Guangdong Province, Southern China and Hong Kong SAR, with descriptions of three new species
FIGURE 12. Caridina conghuensis n. sp., paratype male, cl 3.7 mm (ZMB28225; Präp. 5053–5054) (A) cephalothorax and cephalic appendages; (B) rostrum; (C) antennular peduncle; (D) scaphocerite; (E) telson; (F) distal end of telson; (G) preanal carina; (H) uropodal diaeresis; (I) distal part of mandible; (J) maxillula; (K) maxilla; (L) first maxilliped; (M) second maxilliped; (N) third maxilliped.
FIGURE 11 in To " bee " or not to be—on some ornamental shrimp from Guangdong Province, Southern China and Hong Kong SAR, with descriptions of three new species
FIGURE 11. Caridina cantonensis Yu, 1938, male cl 4.5 mm (collWK 28-09-4) (A) cephalothorax and cephalic appendages; (B) first pereiopod; (C) endopod of male first pleopod (flattened); (D) appendix masculina on male second pleopod; male cl 5.5 mm (collWK 28-09-5) (E) endopod of male first pleopod (flattened).
FIGURE 10. Caridina mariae n in To " bee " or not to be—on some ornamental shrimp from Guangdong Province, Southern China and Hong Kong SAR, with descriptions of three new species
FIGURE 10. Caridina mariae n. sp., paratype male, cl 5.7 mm (ZMB28224; Präp. 5049–5052; Präp. 5057–5058) (A) endopod of male first pleopod; (D) appendix masculina on male second pleopod; paratype male, cl 4.4 mm (ZMB28223; Präp. 5047–5048) (C) endopod of male first pleopod; other material male cl 5.9 mm (collWK AO) (B) endopod of male first pleopod.
FIGURE 8. Caridina mariae n in To " bee " or not to be—on some ornamental shrimp from Guangdong Province, Southern China and Hong Kong SAR, with descriptions of three new species
FIGURE 8. Caridina mariae n. sp., paratype male, cl 5.7 mm (ZMB28224; Präp. 5049–5052; Präp. 5057–5058) (A) cephalothorax and cephalic appendages; (B) scaphocerite; (C) telson; (D) distal end of telson; (E) preanal carina; (F) uropodal diaeresis; (G) distal part of mandible; (H) maxillule; (I) maxilla; (J) first maxilliped; (K) second maxilliped; (L) third maxilliped.
FIGURE 7. Caridina logemanni n in To " bee " or not to be—on some ornamental shrimp from Guangdong Province, Southern China and Hong Kong SAR, with descriptions of three new species
FIGURE 7. Caridina logemanni n. sp., larval stage II (juvenile) (A) third maxilliped; (B) first pereiopod; (C) second pereiopod; (D) third pereiopod; (E) fourth pereiopod; (F) fifth pereiopod; (G) first pleopod; (H) second pleopod; (I) fifth pleopod.
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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.