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1,999 results for “Endangered”
Figure 2 from: Samain M-S, Granados Mendoza C, Martínez Salas EM (2021) On Hydrangea peruviana, an endangered species from Ecuador, and Hydrangea oerstedii, very common in Costa Rica and Panama, and seven threatened Central and South American Hydrangeas, which have been confounded with these. PhytoKeys 171: 91-153. https://doi.org/10.3897/phytokeys.171.56351
Figure 2 Distribution of Hydrangea caucana, Hydrangea durifolia and Hydrangea schlimii.
Figure 8 from: Samain M-S, Granados Mendoza C, Martínez Salas EM (2021) On Hydrangea peruviana, an endangered species from Ecuador, and Hydrangea oerstedii, very common in Costa Rica and Panama, and seven threatened Central and South American Hydrangeas, which have been confounded with these. PhytoKeys 171: 91-153. https://doi.org/10.3897/phytokeys.171.56351
Figure 8 Distribution of Hydrangea oerstedii and Hydrangea panamensis.
Figure 14 from: Samain M-S, Granados Mendoza C, Martínez Salas EM (2021) On Hydrangea peruviana, an endangered species from Ecuador, and Hydrangea oerstedii, very common in Costa Rica and Panama, and seven threatened Central and South American Hydrangeas, which have been confounded with these. PhytoKeys 171: 91-153. https://doi.org/10.3897/phytokeys.171.56351
Figure 14 Distribution of Hydrangea trianae and Hydrangea weberbaueri.
Figure 6 from: Samain M-S, Granados Mendoza C, Martínez Salas EM (2021) On Hydrangea peruviana, an endangered species from Ecuador, and Hydrangea oerstedii, very common in Costa Rica and Panama, and seven threatened Central and South American Hydrangeas, which have been confounded with these. PhytoKeys 171: 91-153. https://doi.org/10.3897/phytokeys.171.56351
Figure 6 Distribution of Hydrangea goudotii and Hydrangea peruviana.
Data from: DNA metabarcoding reveals diet overlap between the endangered Walia ibex and domestic goats - implications for conservation
Human population expansion and associated degradation of the habitat of many wildlife species cause loss of biodiversity and species extinctions. The small Simen Mountains National Park in Ethiopia is one of the last strongholds for the preservation of a number of afro-alpine mammals, plants and birds, and it is home to the rare endemic Walia ibex, Capra walie. The narrow distribution range of this species as well as potential competition for resources with livestock, especially with domestic goat, Capra hircus, may compromise its future survival. Based on a curated afro-alpine taxonomic reference library constructed for plant taxon identification, we investigated the diet of the Walia ibex and addressed the dietary overlap with domestic goat using DNA metabarcoding of faecal samples. Faeces of both species were collected from different localities in the National Park. We show that both species are browsers, with forbs, shrubs and trees comprising the largest proportion of their diet, supplemented by grasses. There was a considerable overlap in dietary preferences. Several of the preferred diet items of the Walia ibex (Alchemilla sp., Hypericum revolutum, Erica arborea and Rumex sp.) were also among the most preferred diet items of the domestic goat. These results indicate that there is potential for competition between the two species, especially during the dry season, when resources are limited. Our findings, in combination with the expected increase in domestic herbivores, suggest that management plans should consider the potential threat posed by domestic goats to ensure future survival of the endangered Walia ibex.
Data from: Microsatellite and major histocompatibility complex variation in an endangered rattlesnake, the Eastern Massasauga (Sistrurus catenatus)
Genetic diversity is fundamental to maintaining the long-term viability of populations, yet reduced genetic variation is often associated with small, isolated populations. To examine the relationship between demography and genetic variation, variation at hypervariable loci (e.g., microsatellite DNA loci) is often measured. However, these loci are selectively neutral (or near neutral) and may not accurately reflect genomewide variation. Variation at functional trait loci, such as the major histocompatibility complex (MHC), can provide a better assessment of adaptive genetic variation in fragmented populations. We compared patterns of microsatellite and MHC variation across three Eastern Massasauga (Sistrurus catenatus) populations representing a gradient of demographic histories to assess the relative roles of natural selection and genetic drift. Using 454 deep amplicon sequencing, we identified 24 putatively functional MHC IIB exon 2 alleles belonging to a minimum of six loci. Analysis of synonymous and nonsynonymous substitution rates provided evidence of historical positive selection at the nucleotide level, and Tajima's D provided support for balancing selection in each population. As predicted, estimates of microsatellite allelic richness, observed, heterozygosity, and expected heterozygosity varied among populations in a pattern qualitatively consistent with demographic history and abundance. While MHC allelic richness at the population and individual levels revealed similar trends, MHC nucleotide diversity was unexpectedly high in the smallest population. Overall, these results suggest that genetic variation in the Eastern Massasauga populations in Illinois has been shaped by multiple evolutionary mechanisms. Thus, conservation efforts should consider both neutral and functional genetic variation when managing captive and wild Eastern Massasauga populations.
Data from: Reconstructing the evolutionary history of an endangered subspecies across the changing landscape of the Great Central Valley of California.
Identifying historic patterns of population genetic diversity and connectivity is a primary challenge in efforts to re-establish the processes that have generated and maintained genetic variation across natural landscapes. The challenge of reconstructing pattern and process is even greater in highly altered landscapes where population extinctions and dramatic demographic fluctuations in remnant populations may have substantially altered, if not eliminated, historic patterns. Here, we seek to reconstruct historic patterns of diversity and connectivity in an endangered subspecies of woodrat that now occupies only 1-2 remnant locations within the highly altered landscape of the Great Central Valley of California. We examine patterns of diversity and connectivity using 14 microsatellite loci and sequence data from a mitochondrial locus and a nuclear intron. We reconstruct temporal change in habitat availability to establish several historical scenarios that could have led to contemporary patterns of diversity, and use an approximate Bayesian computation approach to test which of these scenarios is most consistent with our observed data. We find that the Central Valley populations harbour unique genetic variation coupled with a history of admixture between two well-differentiated species of woodrats that are currently restricted to the woodlands flanking the Valley. Our simulations also show that certain commonly used analytical approaches may fail to recover a history of admixture when populations experience severe bottlenecks subsequent to hybridization. Overall our study shows the strength of combining empirical and simulation analyses to recover the history of populations occupying highly altered landscapes.
Clonality and genetic structure of an endangered aquatic plant, Typha minima, in the French Alps: consequences for conservation
<p>Genetic data on Typha minima populations obtained with AFLP markers.</p> <p>The data was used in the article "Clonality and genetic structure of an endangered aquatic plant, Typha minima, in the French Alps: consequences for conservation, by Irène Till-Bottraud, Jacky Girel, Erwan Roussel, Delphine Rioux, Lucie Fiorese, Noémie Fort and published in Alpine Botany in 2022</p>
Figure 3 from: Campbell DC, Clark SA, Lydeard C (2017) Phylogenetic analysis of the Lancinae (Gastropoda, Lymnaeidae) with a description of the U.S. federally endangered Banbury Springs lanx. ZooKeys 663: 107-132. https://doi.org/10.3897/zookeys.663.11320
Figure 3 - Shell, holotype of Idaholanx fresti sp. n.
Figure 3 from: Yi D-A, Kuprin AV, Bae YJ (2017) Morphological anomalies of endangered Korean relict long-horned beetle Callipogon relictus during ontogenesis and possible causes of their occurrence (Cerambycidae, Coleoptera). ZooKeys 714: 53-60. https://doi.org/10.3897/zookeys.714.21112
Figure 3 - Adults of C. relictus with various developmental deformations of the body.
Figure 2 from: Yi D-A, Kuprin AV, Bae YJ (2017) Morphological anomalies of endangered Korean relict long-horned beetle Callipogon relictus during ontogenesis and possible causes of their occurrence (Cerambycidae, Coleoptera). ZooKeys 714: 53-60. https://doi.org/10.3897/zookeys.714.21112
Figure 2 - Pupae C. relictus with various deformations of teguments and limbs.
Figure 1 from: Yi D-A, Kuprin AV, Bae YJ (2017) Morphological anomalies of endangered Korean relict long-horned beetle Callipogon relictus during ontogenesis and possible causes of their occurrence (Cerambycidae, Coleoptera). ZooKeys 714: 53-60. https://doi.org/10.3897/zookeys.714.21112
Figure 1 - Larvae of Callipogon relictus with various deformations of the teguments.
Fig. 2 in Preliminary Studies On The Genetic Diversity Of An Endemic And Endangered Species Saussurea Esthonica Baer Ex Rupr. In Latvia
Fig. 2 Band patterns across populations based on AFLP analysis
Fig. 1 in Plastid genome of Aster altaicus var. uchiyamae Kitam., an endanger species of Korean asterids
Fig. 1. Plastid genomic map of Aster altaicus var. uchiyamae.
Figure 6 from: Jelić D, Jelić M, Žutinić P, Šimunović I, Zupančič P, Naseka AM (2018) Distribution of endangered Italian gudgeon Romanogobio benacensis (Cypriniformes, Cyprinidae, Gobioninae) with remarks on distinguishing morphological characters. ZooKeys 729: 103-127. https://doi.org/10.3897/zookeys.729.20615
Figure 6 The MJ haplotype network of Romanogobio benacensis
Figure 1 from: Jelić D, Jelić M, Žutinić P, Šimunović I, Zupančič P, Naseka AM (2018) Distribution of endangered Italian gudgeon Romanogobio benacensis (Cypriniformes, Cyprinidae, Gobioninae) with remarks on distinguishing morphological characters. ZooKeys 729: 103-127. https://doi.org/10.3897/zookeys.729.20615
Figure 1 Map of distribution of Romanogobio benacensis in South-West Europe.
Figure 2 from: Piry S, Berthier K, Streiff R, Cros-Arteil S, Foucart A, Tatin L, Bröder L, Hochkirch A, Chapuis M-P (2018) Fine-scale interactions between habitat quality and genetic variation suggest an impact of grazing on the critically endangered Crau Plain grasshopper (Pamphagidae: Prionotropis rhodanica). Journal of Orthoptera Research 27(1): 61-73. https://doi.org/10.3897/jor.27.15036
Figure 2 Adult of Prionotropis rhodanica.
Figure 1 from: Henning T, Acuña Castillo R, Rodríguez Rodríguez EF, García Llatas LF, Weigend M (2019) A new striking and critically endangered species of Nasa (Loasaceae, Cornales) from North Peru. PhytoKeys 121: 13-28. https://doi.org/10.3897/phytokeys.121.33927
Figure 1 Map of the known localities of Nasaangeldiazioides.
Figure 7 in Eupelmus niger (Hymenoptera: Eupelmidae), a Parasitoid of the Endangered Hawaiian Yellow-faced Bee Hylaeus anthracinus (Hymenoptera: Colletidae)
Figure 7. Hylaeus strenuus resting in dowel cavity, possibly guarding nest under construction.
Figure 1 from: Zhao L, Gao T, Lu W (2015) Complete mitochondrial DNA sequence of the endangered fish (Bahaba taipingensis): Mitogenome characterization and phylogenetic implications. ZooKeys 546: 181-195. https://doi.org/10.3897/zookeys.546.5964
Figure 1 - The structure of control region about Bahaba taipingensis.
ScienceDex guides
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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.