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1,071 results for “shield”
FIGURE 23. N in A revision of the shield-back katydid genus Neduba (Orthoptera: Tettigoniidae: Tettigoniinae: Nedubini)
FIGURE 23. N. lucubrata male and female habitus, calling song, male and female terminalia, karyotype.
Data from: Human shields mediate sexual conflict in a top predator
Selecting the right habitat in a risky landscape is crucial for an individual's survival and reproduction. In predator–prey systems, prey often can anticipate the habitat use of their main predator and may use protective associates (i.e. typically an apex predator) as shields against predation. Although never tested, such mechanisms should also evolve in systems in which sexual conflict affects offspring survival. Here, we assessed the relationship between offspring survival and habitat selection, as well as the use of protective associates, in a system in which sexually selected infanticide (SSI), rather than interspecific predation, affects offspring survival. We used the Scandinavian brown bear (Ursus arctos) population with SSI in a human-dominated landscape as our model system. Bears, especially adult males, generally avoid humans in our study system. We used resource selection functions to contrast habitat selection of GPS-collared mothers that were successful (i.e. surviving litters, n = 19) and unsuccessful (i.e. complete litter loss, n = 11) in keeping their young during the mating season (2005–2012). Habitat selection was indeed a predictor of litter survival. Successful mothers were more likely to use humans as protective associates, whereas unsuccessful mothers avoided humans. Our results suggest that principles of predator–prey and fear ecology theory (e.g. non-consumptive and cascading effects) can also be applied to the context of sexual conflict.
Data from: Tropical rainforests that persisted: inferences from the Quaternary demographic history of eight tree species in the Guiana shield
How Quaternary climatic and geological disturbances influenced the composition of Neotropical forests is hotly debated. Rainfall and temperature changes during and/or immediately after the last glacial maximum (LGM) are thought to have strongly affected the geographical distribution and local abundance of tree species. The paucity of the fossil records in Neotropical forests prevents a direct reconstruction of such processes. To describe community-level historical trends in forest composition, we turned therefore to inferential methods based on the reconstruction of past demographic changes. In particular, we modelled the history of rainforests in the eastern Guiana Shield over a timescale of several thousand generations, through the application of approximate Bayesian computation and maximum-likelihood methods to diversity data at nuclear and chloroplast loci in eight species or subspecies of rainforest trees. Depending on the species and on the method applied, we detected population contraction, expansion or stability, with a general trend in favour of stability or expansion, with changes presumably having occurred during or after the LGM. These findings suggest that Guiana Shield rainforests have globally persisted, while expanding, through the Quaternary, but that different species have experienced different demographic events, with a trend towards the increase in frequency of light-demanding, disturbance-associated species.
Data from: A preliminary molecular phylogeny of shield-bearer moths (Lepidoptera: Adeloidea: Heliozelidae) highlights rich undescribed diversity
Heliozelidae are a widespread, evolutionarily early diverging family of small, day-flying monotrysian moths, for which a comprehensive phylogeny is lacking. We generated the first molecular phylogeny of the family using DNA sequences of two mitochondrial genes (COI and COII) and two nuclear genes (H3 and 28S) from 130 Heliozelidae specimens, including eight of the twelve known genera: Antispila, Antispilina, Coptodisca, Heliozela, Holocacista, Hoplophanes, Pseliastis, and Tyriozela. Our results provide strong support for five major Heliozelidae clades: (i) a large widespread clade containing the leaf-mining genera Antispilina, Coptodisca and Holocacista and some species of Antispila, (ii) a clade containing most of the described Antispila, (iii) a clade containing the leaf-mining genus Heliozela and the monotypic genus Tyriozela, (iv) an Australian clade containing Pseliastis and (v) an Australian clade containing Hoplophanes. Each clade includes several new species and potentially new genera. Collectively, our data uncover a rich and undescribed diversity that appears to be especially prevalent in Australia. Our work highlights the need for a major taxonomic revision of the family and for generating a robust molecular phylogeny using multi-gene approaches in order to resolve the relationships among clades.
Stone Shield, Aldobrandeschi Castle. Arcidosso
Commemorative shield on the back of the second floor of the inside of the Aldobrandeschi Castle, Arcidosso, Grosseto, Tuscany. Commemorative shield above the staircase on the inside of the Aldobrandeschi Castle, Arcidosso, Grosseto, Tuscany. The presence of the helmet of a knight is a symbol for lower aristocracy. The shield is coupled with a dedicatory inscription in a 16th-17th frame positioned below the coat of arms. Model was created in Reality Capture using 206 photographs. The Mt. Amiata Project is an ongoing GDH collaboration involving faculty and students at the University of Florence and the University of Siena. We could not have done this project without the considerable support of the Municipality of Arcidosso. Source: Objaverse 1.0 / Sketchfab
Vintage Animal Hide Shield
Source: Objaverse 1.0 / Sketchfab
Shield Model
Shield model for Free download and use.. Source: Objaverse 1.0 / Sketchfab
SM_Shield
Source: Objaverse 1.0 / Sketchfab
Germanic Rectangular Shield
Source: Objaverse 1.0 / Sketchfab
Shield, gladiator statue, Els Munts, Tarragona
Shield from a gladiator statue from the site of Els Munts (Tarragona, Spain), dated in the mid-2nd century AD. From the Roman villa of Els Munts. Discovered in frigidarium pool. Decorated with the Gorgon´s head in the centre and depictions of Helios and Selene on their chariots, accompanied by diverse figures such as Phosporous, Hesperus and Oceanus. On the back there is the hand and forearm of a lareger-than-life male figure. 1365 photos completely processed in Reality Capture. The project was done with the support of the National Archaeological Museum of Tarragona and the Agència Catalana del Patrimoni Cultural. Catalog No. MNAT 45405. Museu Nacional Arqueològic de Tarragona (2019): Tarraco: Exposición de síntesis. Generalitat de Catalunya Publicacions. Source: Objaverse 1.0 / Sketchfab
3D Low Poly/VR/AR Model Viking Shield
3D Low Poly/VR/AR Model Viking Shield ready for games. Source: Objaverse 1.0 / Sketchfab
Shield
Knight's Shield from Harry Potter. Gryffindor. Source: Objaverse 1.0 / Sketchfab
Viking Shield Test
Source: Objaverse 1.0 / Sketchfab
Shield
Low poly shield ALL texture 2048x2048 Source: Objaverse 1.0 / Sketchfab
Stylized Viking Shield.
Just wanted to fool around a little bit with Emissive color. Source: Objaverse 1.0 / Sketchfab
Shield
Source: Objaverse 1.0 / Sketchfab
Commemorative Shield, Via Talassese, Arcidosso
Commemorative Shield on the wall of a house on Via Talassese, Arcidosso, Grosseto, Tuscany. The decoration with six balls identify the connection with Medici family, reigning in this area after mid 16th c. as a result of the Medici conquest of Siena. Model was created in Reality Capture using 171 photographs. The Mt. Amiata Project is an ongoing GDH collaboration involving faculty and students at the University of Florence and the University of Siena. We could not have done this project without the considerable support of the Municipality of Arcidosso. Source: Objaverse 1.0 / Sketchfab
Stone Shield, Aldobrandeschi Castle. Arcidosso
Commemorative Shield on the outside of the Aldobrandeschi Castle, Arcidosso, Grosseto, Tuscany. Shield is located high on the castle wall and was shot at 50m with a Canon 70-200 f2.8 L lens. The result is no photos from above. Model was created in Reality Capture using 220 photographs. The Mt. Amiata Project is an ongoing GDH collaboration involving faculty and students at the University of Florence and the University of Siena. We could not have done this project without the considerable support of the Municipality of Arcidosso. Source: Objaverse 1.0 / Sketchfab
Stone Shield, Aldobrandeschi Castle. Arcidosso
Commemorative Shield on the outside of building (currenlty the MACO Museum) across from the entrance of the Aldobrandeschi Castle, Arcidosso, Grosseto, Tuscany. The castle in the middle, with a tree (maybe a chesnut tree) is the symbol of the municipality of Arcidosso. Model was created in Reality Capture using 233 photographs. The Mt. Amiata Project is an ongoing GDH collaboration involving faculty and students at the University of Florence and the University of Siena. We could not have done this project without the considerable support of the Municipality of Arcidosso. Source: Objaverse 1.0 / Sketchfab
Sword and Shield LP
Sword and Shield LowPoly Source: Objaverse 1.0 / Sketchfab
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