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437 results for “threatened species”
Fig. 1 in Before it is too late: description of a new genus and species of butterfly from a highly threatened Brazilian biome
Fig. 1. Nhambikuara cerradensis gen. et sp. nov. A – holotype male, dorsal; B – holotype male, ventral; C – allotype female, dorsal; D – allotype female, ventral.
Fig. 7 in Before it is too late: description of a new genus and species of butterfly from a highly threatened Brazilian biome
Fig. 7. Maximum likelihood consensus tree showing the phylogenetic relationships among species of Nhambikuara gen. nov. and exemplar species of Splendeuptychia. Numbers above branches are bootstrap values.
FIGURE 2. Macrosamanea macrocalyx. A. A. Ducke 16622 in Rediscovery of Macrosamanea macrocalyx (Leguminosae: Mimosoideae), a threatened endemic species from the Middle Xingu River, Amazonia, Brazil
FIGURE 2. Macrosamanea macrocalyx. A. A. Ducke 16622, Isotype (MG). B. J.G. Kuhlmann 2035 (RB).
FIGURE 3 in Rediscovery of Macrosamanea macrocalyx (Leguminosae: Mimosoideae), a threatened endemic species from the Middle Xingu River, Amazonia, Brazil
FIGURE 3. Geographic distribution of Macrosamanea macrocalyx (Ducke) Barneby & J.W.Grimes.
FIGURE 3 in Scilla vardaria (Asparagaceae subfamily Scilloideae): a threatened new species of Scilla L. from Northeast Turkey with a floral corona
FIGURE 3. Scilla vardaria: A–K. Details of flowers.
FIGURE 1 in Dorstenia acangatara (Moraceae), a new and threatened species from Southeastern Brazil
FIGURE 1: Dorstenia acangatara Photograph of the living plant in the field. (Julio Lombardi)
FIGURE 5 in An overlooked threatened species of eagle: Legge's Hawk Eagle Nisaetus kelaarti (Aves: Accipitriformes)
FIGURE 5. Adult Nisaetus kelaarti photographed in Sri Lanka by Uditha Hettige.
FIGURE 1 in Re-validation and re-description of an endemic and threatened species, Aphanius pluristriatus (Jenkins, 1910) (Teleostei, Cyprinodontidae), from southern Iran
FIGURE 1. Drainage systems and type localities of Aphanius species in south and central Iran.
Projected climate change threatens significant range contraction of Cochemiea halei (Cactaceae), an island endemic, serpentine adapted plant species at risk of extinction
<p>Threats faced by narrowly distributed endemic plant species in the face of the Earth's sixth mass extinction and climate change exposure are especially severe for taxa on islands. We investigated the current and projected distribution and range changes of Cochemiea halei, an island endemic cactus. This taxon is of conservation concern, currently listed as vulnerable on the International Union for the Conservation of Nature Red List and as a species of special concern under Mexican federal law.</p> <p>The goals of this study are to 1). identify the correlations between climate variables and current suitable habitat for C. halei; 2). determine if the species is a serpentine endemic or has a facultative relationship with ultramafic soils; 3). predict range changes of the species based on climate change scenarios.</p> <p>Location: The island archipelago in Bahía Magdalena on the Pacific coast, Baja California Sur, Mexico.</p> <p>Main conclusions: The occurrence of the species is found to be strongly correlated with ultramafic soils. The most important climate predictor for habitat suitability is annual temperature range. The species is predicted to undergo range contractions from 21% to 53%, depending on the severity and duration of exposure to climate change. The broader implications for a wide range of narrowly adapted, threatened and endemic plant species indicate an urgent need for threat assessment based on habitat suitability and climate change modeling.</p>
Secondary predation constrains DNA-based diet reconstruction in two threatened shark species
<p>Increasing fishing effort, including bycatch and discard practices, are impacting marine biodiversity, particularly among slow-to-reproduce taxa such as elasmobranchs, and specifically sharks. While some fisheries involving sharks are sustainably managed, collateral mortalities continue, contributing towards > 35% of species being threatened with extinction. To effectively manage shark stocks, life-history information, including resource use and feeding ecologies is pivotal, especially among those species with wide-ranging distributions. Two cosmopolitan sharks bycaught off eastern Australia are the common blacktip shark (<i>Carcharhinus limbatus</i>; globally classified as Near Threatened) and great hammerhead (<i>Sphyrna mokarran</i>; Critically Endangered). We opportunistically sampled the digestive tracts of these two species (and also any whole prey; termed the 'Russian-doll' approach), caught in bather-protection gillnets off northern New South Wales, to investigate the capacity for DNA metabarcoding to simultaneously determine predator and prey regional feeding ecologies. While sample sizes were small, <i>S. mokkaran</i> fed predominantly on stingrays and skates (Myliobatiformes and Rajiformes), but also teleosts, while <i>C. limbatus</i> mostly consumed teleosts. Metabarcoding assays showed extensive intermixing of taxa from the digestive tracts of predators and their whole prey, likely via the predator's stomach chyme, negating the opportunity to distinguish between primary and secondary predation. This Russian-doll effect requires further investigation in DNA metabarcoding studies focusing on dietary preferences and implies that any outcomes will need to be interpreted concomitant with traditional visual approaches.</p>
SNP dataset for the threatened plant species Dinizia jueirana-facao (Fabaceae)
<p>By performing sensitivity analyses, we empirically investigated how decisions about the percentage of missing data (MD) and the minor allele frequency (MAF) set in bioinformatic processing of genomic data affect direct (i.e., parentage analysis) and indirect (i.e., fine-scale spatial genetic structure - SGS) gene flow estimates. We focus specification on these manifestations in small plant populations, and specifically, in the rare tropical plant species <i>Dinizia jueirana-facao</i>, where assumptions implicit to analytical procedures for accurate estimates of gene flow may not hold. Avoiding biases in dispersal estimates are essential given this species is facing extinction risks due to habitat loss, and so we also investigate the effects of forest fragmentation on the accuracy of dispersal estimates under different filtering criteria by testing for recent decrease in the scale of gene flow. Our sensitivity analyses demonstrate that gene flow estimates are robust to different setting of MAF (0.05 to 0.35) and MD (0 to 20%). Comparing the direct and indirect estimates of dispersal, we find that contemporary estimates of gene dispersal distance (<i>σ<sub>r</sub></i><sub>t</sub> = 41.8 m) was ~ fourfold smaller than the historical estimates, supporting the hypothesis of a temporal shift in the scale of gene flow in <i>D. jueirana-facao</i>, which is consistent with predictions based on recent, dramatic forest fragmentation process. While we identified settings for filtering genomic data to avoid biases in gene flow estimates, we stress that there is no 'rule of thumb' for bioinformatic filtering or that relying on default program settings is advisable. Instead, we suggest that the approach implemented here be applied independently in each separate empirical study to confirm appropriate settings to obtain unbiased population genetics estimates.</p>
Figures 16-19 from: Kawahara A, Rubinoff D (2012) Three new species of Fancy Case caterpillars from threatened forests of Hawaii (Lepidoptera, Cosmopterigidae, Hyposmocoma). ZooKeys 170: 1-20. https://doi.org/10.3897/zookeys.170.1428
Figures 16-19 - Female genitalia.16 Hyposmocoma tantala sp. n., lateral view 17 Hyposmocoma inversella, ventral view 18 Hyposmocoma auropurpurea, ventral view 19 Hyposmocoma ipohapuu sp. n., ventral view. Scale bar = 1 mm. Figs 16–18 stained with Chlorazol Black, Fig. 19 stained with Orange G.
Figure 20 from: Kawahara A, Rubinoff D (2012) Three new species of Fancy Case caterpillars from threatened forests of Hawaii (Lepidoptera, Cosmopterigidae, Hyposmocoma). ZooKeys 170: 1-20. https://doi.org/10.3897/zookeys.170.1428
Figure 20 - ML phylogeny of tubular purse-cased Hyposmocoma and relatives. Numbers above branches are ML bootstrap values, numbers below are Bayesian posterior probabilities. Scale bar = 0.02 substitutions/site.
Figures 1-6 from: Kawahara A, Rubinoff D (2012) Three new species of Fancy Case caterpillars from threatened forests of Hawaii (Lepidoptera, Cosmopterigidae, Hyposmocoma). ZooKeys 170: 1-20. https://doi.org/10.3897/zookeys.170.1428
Figures 1-6 - Purse-cased Hyposmocoma. 1 Hyposmocoma auropurpurea, male2 Hyposmocoma inversella, male. 3 Hyposmocoma ipohapuu sp. n.holotype male 4 Hyposmocoma makawao sp. n.holotype male 5 Hyposmocoma nebulifera, male 6 Hyposmocoma tantala sp. n.holotypefemale. In order to examine genitalia, the abdomen of each was removed after photographs were taken. Scale bar = 5 mm.
Figures 11-15 from: Kawahara A, Rubinoff D (2012) Three new species of Fancy Case caterpillars from threatened forests of Hawaii (Lepidoptera, Cosmopterigidae, Hyposmocoma). ZooKeys 170: 1-20. https://doi.org/10.3897/zookeys.170.1428
Figures 11-15 - Male genitalia. 11 Hyposmocoma auropurpurea 12 Hyposmocoma nebulifera 13 Hyposmocoma tantala sp. n. 14 Hyposmocoma ipohapuu sp. n. 15 Hyposmocoma makawao sp. n. Scale bar = 1 mm. Figs 11–14 stained with Chlorazol Black, Fig. 15 stained with Orange G.
Figures 7-10 from: Kawahara A, Rubinoff D (2012) Three new species of Fancy Case caterpillars from threatened forests of Hawaii (Lepidoptera, Cosmopterigidae, Hyposmocoma). ZooKeys 170: 1-20. https://doi.org/10.3897/zookeys.170.1428
Figures 7-10 - Larval cases of some purse-cased Hyposmocoma. 7 Hyposmocoma ipohapuu sp. n. 8 Hyposmocoma makawao sp. n. 9 Hyposmocoma nebulifera 10 Hyposmocoma tantala sp. n. Scale bar = 1 mm.
Figure 11 from: Hicks A (2015) In the shadow of a megalopolis, a new Flexamia from a threatened grass species in the New Jersey Pine Barrens (Hemiptera, Cicadellidae, Deltocephalinae, Paralimnini). ZooKeys 511: 69-79. https://doi.org/10.3897/zookeys.511.9572
Figure 11 - Female, bases of valvulae. Within Flexamia these structures provide a means for specific identification of female specimens.
Figure 12 from: Hicks A (2015) In the shadow of a megalopolis, a new Flexamia from a threatened grass species in the New Jersey Pine Barrens (Hemiptera, Cicadellidae, Deltocephalinae, Paralimnini). ZooKeys 511: 69-79. https://doi.org/10.3897/zookeys.511.9572
Figure 12 - Distribution of Muhlenbergia torreyana and location of the Pine Barrens. Modified from data found on the Grass Manual on the Web and BONAP's North American Plant Atlas.
Figure 1 from: Hicks A (2015) In the shadow of a megalopolis, a new Flexamia from a threatened grass species in the New Jersey Pine Barrens (Hemiptera, Cicadellidae, Deltocephalinae, Paralimnini). ZooKeys 511: 69-79. https://doi.org/10.3897/zookeys.511.9572
Figure 1 - A stand of Muhlenbergia torreyana in the Pine Barrens. Photo courtesy of Uli Lorimer of the Brooklyn Botanic Garden.
Figure 10 from: Hicks A (2015) In the shadow of a megalopolis, a new Flexamia from a threatened grass species in the New Jersey Pine Barrens (Hemiptera, Cicadellidae, Deltocephalinae, Paralimnini). ZooKeys 511: 69-79. https://doi.org/10.3897/zookeys.511.9572
Figure 10 - Female 7th sternite. Commonly illustrated for this genus but only occasionally useful to separate species.
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.