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18 results for “white-tailed eagles”
Fig. 3 in Molecular identification of Sarcocystis halieti n. sp., Sarcocystis lari and Sarcocystis truncata in the intestine of a white-tailed sea eagle (Haliaeetus albicilla) in Norway
Fig. 3. Phylogenetic tree for members of the Sarcocystidae based on 63 sequences of the partial cox1 gene from 61 taxa and inferred using the neighbourjoining method. Evolutionary distances were computed using the Kimura 2- parameter method. The percentage of replicate trees in which the associated taxa clustered together in the bootstrap test (1000 replicates) is shown next to the branches. The four new sequences from the present study are in boldface.
Fig. 2 in Molecular identification of Sarcocystis halieti n. sp., Sarcocystis lari and Sarcocystis truncata in the intestine of a white-tailed sea eagle (Haliaeetus albicilla) in Norway
Fig. 2. Sporulated thin-walled oocysts of S. halieti and S. lari (based on molecular identification) in wet smears of the intestinal mucosa (frozen/thawed) of the white-tailed sea eagle (Bars = 20 μm). A – Low magnification of numerous oocysts in the mucosa. B – Higher magnification of sporulated oocysts with a thin wall (arrows). C – A fairly large oocyst of the predominant type and a much smaller free sporocyst (ssp), possibly of S. truncata.
Fig. 4 in Molecular identification of Sarcocystis halieti n. sp., Sarcocystis lari and Sarcocystis truncata in the intestine of a white-tailed sea eagle (Haliaeetus albicilla) in Norway
Fig. 4. Phylogenetic tree for members of the Sarcocystidae based on 60 sequences of the complete ITS1 region of 29 taxa and inferred using the neighbour-joining method. Evolutionary distances were computed using the Kimura 2-parameter method. The percentage of replicate trees in which the associated taxa clustered together in the bootstrap test (1000 replicates) is shown next to the branches. The new sequences from the present study are in boldface. Some subtrees formed by two or more sequences of the same species have been collapsed.
Fig. 1 in Molecular identification of Sarcocystis halieti n. sp., Sarcocystis lari and Sarcocystis truncata in the intestine of a white-tailed sea eagle (Haliaeetus albicilla) in Norway
Fig. 1. Cross-sections of two thin-walled sarcocysts in a HE-stained histological section of cardiac muscle from the white-tailed sea eagle (Bar = 20 μm). A – Fairly large profile of a sarcocyst. B – Smaller profile of a sarcocyst containing several roundish cells at the periphery.
Fig. 2 in First observation of the White-tailed eagle Haliaeetus albicilla (Linnaeus, 1758) in CW Bulgaria for the last 132 years
Fig. 2. Breeding distribution of the White-tailed Eagle (Haliaeеtus albicilla) in Bulgaria (after Ivanov et al., 2007). The locality near the Bakardere Reservoir is marked with a red dot.
Fig. 1 in First observation of the White-tailed eagle Haliaeetus albicilla (Linnaeus, 1758) in CW Bulgaria for the last 132 years
Fig. 1. White-tailed Eagle (Haliaeеtus albicilla) near Bakardere Reservoir, 20 August 2022. Photo: Zlatozar Z. Boev.
Figure 1 in Accumulation of chromium, cadmium and arsenic in white-tailed sea-eagle feathers ( Haliaeetus albicilla) from the Danube Delta Biosphere Reserve and surrounding (Romania)
Figure 1. Geographical distribution of sampling points for WtSe (Haliaeetus albicilla) from DDBR and the surrounding areas.
Data from: Top-down control of a marine mesopredator: Increase in native white-tailed eagles accelerates the extinction of an endangered seabird population
<p><span>1. </span><span>Bottom-up control is an important regulator of marine mesopredators such as seabirds. The prevalence of top-down control on these species is however less well understood. In particular, how native predators affect seabird populations has rarely been quantified. </span></p> <p><span>2. </span><span>Here, we investigate how an increase in white-tailed eagles in northern Norway, a stronghold for the species, affected a local population of 25,000 pairs of black-legged kittiwakes, a red-listed seabird, during a 42-year period ending with colony extinction. We use a natural experiment of two neighbouring colonies with/without eagle predation to disentangle the effects of eagles from local kittiwake foraging conditions (using size of young herring as a proxy). </span></p> <p><span>3. </span><span>At the colony where eagle predation occurred, and in contrast to the eagle-free colony, kittiwake breeding success and population size declined with increased eagle abundance, the latter more strongly under poor foraging conditions. Breeding success increased with foraging conditions at both colonies. </span></p> <p><span>4. </span><span>Simple population modelling shows that although conditions were insufficient to sustain the eagle-exposed colony, the increased abundance of eagles sped up its extirpation by many years.</span></p> <p><span>5. </span><span>Policy implications</span><span>. Our study shows that top-down effects from avian predators can be significant regulators of seabird populations, challenging their conservation where native, often protected, predators are rising. Such effects, and their possible interaction with other factors, must also be accounted for when using seabird demographic traits as environmental indicators and when developing more flexible and effective management and action plans. </span></p>
Data from: Top-down control of a marine mesopredator: Increase in native white-tailed eagles accelerates the extinction of an endangered seabird population
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White-tailed Eagle (NHMW-Zoo-VS 37.779&37.781)
3D scan of the mounted white-tailed eagle pair (*Haliaeetus albicilla*) from the Danube wetlands near Vienna. These birds were bagged by Crown Prince Rudolf on the 22nd of January 1889, only nine days before he committed suicide in Mayerling, Austria. The nest of the white-tailed eagles called eyrie can be as tall as four meters and is often used for many years. The white-tailed eagle pair with a fledgling at the center is Number 74 of the NHM Top 100 and can be found in Hall 29 of the NHM Vienna. **Specimen**: *Haliaeetus albicilla* (Linnaeus, 1758) **Inventory number**: NHMW-Zoo-VS 37.779 & 37.781 **Collection**: Natural History Museum Vienna, 1st Zoological Dept., Bird Coll. (curator: Swen Renner) Find out more about the NHMW [here](http://www.nhm-wien.ac.at/en). Scanned and edited by Anna Haider (NHMW) Scanner: Artec Leo. Infrastructure funded by the FFG. Source: Objaverse 1.0 / Sketchfab
Distinctive mitogenomic lineages within populations of white-tailed eagles (Haliaeetus albicilla)
<p>Using whole mitochondrial DNA sequences from 89 white-tailed eagles (<i>Haliaeetus albicilla</i>) sampled from Iceland, Greenland, Norway, Denmark and Estonia between 1990-2018, we investigate the mitogenomic variation within and between countries. We show that there is a substantial population differentiation between the countries, reflecting similar major phylogeographic patterns obtained previously for the control region of the mitochondria, which suggested two main refugia during the last glacial period of Ice Age. Distinct mitogenomic lineages are observed within countries which divergence times exceeds the time since last glacial period of Ice Age ended. The lineages appear to have been maintained by natural selection. An excess of segregating amino acids in comparison with number of fixations, as revealed by the neutrality index suggests a load of deleterious mutations. The maintenance of mtDNA lineages within countries inflates our estimates of effective national population sizes and the times of their divergence.</p>
Data from: Natural and anthropogenic influences on the population structure of white-tailed eagles in the Carpathian Basin and Central Europe
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Distinctive mitogenomic lineages within populations of white-tailed eagles (Haliaeetus albicilla)
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Figure. Map of the study area with the locations of actively used white-tailed eagle nests in the years 2009–2011. in Nest-site selection, breeding success, and diet of white-tailed eagles (Haliaeetus albicilla) in the Danube Delta, Romania
Figure. Map of the study area with the locations of actively used white-tailed eagle nests in the years 2009–2011.
Figure 5 in Accumulation of chromium, cadmium and arsenic in white-tailed sea-eagle feathers ( Haliaeetus albicilla) from the Danube Delta Biosphere Reserve and surrounding (Romania)
Figure 5. Boxplot (median, variability and outliers can be observed) of the values observed for the three elements in the samples coming from juvenile specimens.
Figure 2 in Accumulation of chromium, cadmium and arsenic in white-tailed sea-eagle feathers ( Haliaeetus albicilla) from the Danube Delta Biosphere Reserve and surrounding (Romania)
Figure 2. Accumulation level of chromium identified in the feathers sorted by age. Average values for each sampling point are showed when there were multiple samples available.
Figure 3 in Accumulation of chromium, cadmium and arsenic in white-tailed sea-eagle feathers ( Haliaeetus albicilla) from the Danube Delta Biosphere Reserve and surrounding (Romania)
Figure 3. Accumulation level of arsenic identified in the feathers sorted by age. Average values for each sampling point are showed when there were multiple samples available.
Figure 4 in Accumulation of chromium, cadmium and arsenic in white-tailed sea-eagle feathers ( Haliaeetus albicilla) from the Danube Delta Biosphere Reserve and surrounding (Romania)
Figure 4. Accumulation level of cadmium identified in the feathers sorted by age.
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.