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437 results for “threatened species”
FIGURE 3. A–C,F,H–L,O–P Stevekenia nothocestri, D–E,G,M–N,Q Stevekenia aiea. A in A new endemic psyllid genus, Stevekenia gen. nov. (Hemiptera: Psylloidea, Triozidae), from the Hawaiian Islands with two new and rare species on threatened host plants in the endemic genus Nothocestrum (Solanaceae)
FIGURE 3. A–C,F,H–L,O–P Stevekenia nothocestri, D–E,G,M–N,Q Stevekenia aiea. A—male terminalia; B—sperm pump with comparative size of paramere; C—aedeagus; D—male terminalia; E—aedeagus; F,G—paramere (external surface); H—female terminalia; I—female subgenital plate (ventral view); J—female proctiger (dorsal view); K detail of dorsum of female proctiger indicating position of raised pores flanking anal ring; L female abdomen (with eggs) indicating long setae on sternites; M—female terminalia (with egg) indicating position of raised pore flanking anal ring, inset illustration of anal ring shape and circumanal pores; N—ovipositor; O–Q—eggs indicating pedicel, tail, plug-like structure, and surface cellular outgrowths (illustrated).
FIGURE 2. A–H, N, P–Q Stevekenia nothocestri, I–M,O,R Stevekenia aiea. A in A new endemic psyllid genus, Stevekenia gen. nov. (Hemiptera: Psylloidea, Triozidae), from the Hawaiian Islands with two new and rare species on threatened host plants in the endemic genus Nothocestrum (Solanaceae)
FIGURE 2. A–H, N, P–Q Stevekenia nothocestri, I–M,O,R Stevekenia aiea. A—head (dorsal view above, ventral view below) indicating position of posterior eye rim extensions (outlined), lateral ocelli, and anterior vertex extensions (in dorsal view) and position of medial ocellus below vertex extensions (in ventral view); B—head (dorso-anterior view) indicating short vertex with anterior vertex extensions; C—head (ventro-anterior view); D—head (lateral view) indicating position of posterior eye rim extension; E—single disk rhinarium on antennal segment 6 (illustration inset); F—multiple disk rhinaria on antennal segment 4; G—head and antenna; H—proboscis; I—head (dorsal view above, ventral view below) indicating position of posterior eye rim extensions, lateral ocelli, and anterior vertex extensions (in dorsal view) and position of medial ocellus below vertex extensions (in ventral view); J—detail of diverging anterior vertex extensions; K—head and antenna; L—proboscis; M,N—hind leg; O,P—genual spine at base of hind tibia; Q—apical tibial spurs and tarsi; R—detail of pair of apical tibial spurs not conjoined basally; S—detail of hind tarsal claws and arolium.
FIGURE 1. A–G Stevekenia nothocestri, H–L Stevekenia aiea. A in A new endemic psyllid genus, Stevekenia gen. nov. (Hemiptera: Psylloidea, Triozidae), from the Hawaiian Islands with two new and rare species on threatened host plants in the endemic genus Nothocestrum (Solanaceae)
FIGURE 1. A–G Stevekenia nothocestri, H–L Stevekenia aiea. A—fore wing; B—hind wing; C—detail of fore wing cell m2 indicating position of two clusters of marginal radular spines, inset illustrates disbursed distribution of spines; D—detail of long setae on fore wing ventral margin and veins; E—dorsum of thorax; F—female habitus (cluster of eggs in abdomen); Ghead and thorax; H—fore wing (male); I—fore wing (female); J—hind wing (female); K—detail of fore wing cells m1 and m2 indicating position of single clusters of marginal radular spines towards posterior in each cell, inset illustrates narrow distribution of spines; L—detail of long setae on fore wing ventral margin and veins.
Map of the proportion of threatened endemic species per country in relation with environmental and socioeconomic drivers
<p>This dataset is a shapefile representing the proportion of threatened endemic species (both plants and animals) in 247 countries along with associated environmental and socioeconomic drivers. The geographic coordinate system is World Geodetic System 1984 (EPSG: 4326).</p>
Taxonomy based on limited genomic markers may underestimates species diversity of rockhopper penguins and threaten their conservation
<p><span><span><span><span><span><span><span><span><span><span><span>Delimiting recently diverged species is challenging. During speciation, genetic differentiation may be distributed unevenly across the genome, as different genomic regions can be subject to different selective pressures and evolutionary histories. Reliance on limited numbers of genetic markers that may be underpowered can make species delimitation even more challenging, potentially resulting in taxonomic inconsistencies. Rockhopper penguins of the genus <i>Eudyptes</i> comprise three broadly recognized taxa: northern (<i>E. moseleyi</i>), southern (<i>E. chrysocome</i>), and eastern rockhopper (<i>E. filholi</i>). Their taxonomic status has been controversial for decades, with researchers disagreeing about whether <i>E. chrysocome</i> and <i>E. filholi</i>are distinct species or conspecific. Our goal is to evaluate genome-wide patterns of divergence to evaluate genetic differentiation and species delimitation in<i> </i>rockhopper penguins<i>, </i>and to assess which mechanisms may underlie previous discordance among nuclear versus mitochondrial analyses. We generated reduced-representation genomic libraries using Double Digest Restriction-site Associated DNA (ddRAD) sequencing to evaluate genetic differentiation, contemporary migration rates and admixture among colonies of rockhopper penguins. The extent of genetic differentiation among the three taxa was consistently higher than population-level genetic differentiation found within these and other penguin species. There was no evidence of admixture among the three taxa, suggesting the absence of ongoing gene flow among them. Species delimitation analyses based on molecular data, along with other lines of evidence, provide strong support for the taxonomic distinction of three species of rockhopper penguins. Our results provide strong support for the existence of three distinct species of rockhopper penguins. The recognition of this taxonomic diversity is crucial for the management and conservation of this widely distributed species group. This study illustrates that widespread dispersive seabird lineages lacking obvious morphological differences may nevertheless have complex evolutionary histories and comprise cryptic species diversity. </span></span></span></span></span></span></span></span></span></span></span></p>
FIGURE 12 in Two new species of the millipede family Trichopolydesmidae from Bahia state northeastern Brazil, including a remarkable threatened troglobiont (Diplopoda, Polydesmida)
FIGURE 12. Moojenodesmus schubarti sp. nov., male paratype. A. Leg 9, lateral view. B. Right gonopod, posterior view. C & D. Left gonopod, mesal and lateral views, respectively. Scale bars: 0.2 mm (A) and 0.1 mm (B–D). Abbreviations: ex, exomere; sl, solenomere.
FIGURE 11 in Two new species of the millipede family Trichopolydesmidae from Bahia state northeastern Brazil, including a remarkable threatened troglobiont (Diplopoda, Polydesmida)
FIGURE 11. Moojenodesmus schubarti sp. nov., male paratype. A–C. Anterior part of body, dorsal, lateral and ventral views, respectively. D–F. Posterior half of body, dorsal, lateral and ventral views, respectively. Abbreviation: h, hump. Photographs by K.V. Makarov, taken not to scale.
FIGURE 7 in Two new species of the millipede family Trichopolydesmidae from Bahia state northeastern Brazil, including a remarkable threatened troglobiont (Diplopoda, Polydesmida)
FIGURE 7. SEM micrographs of Phaneromerium troglopterygotum sp. nov., male paratype. A & B. Middle and posterior parts of body, respectively, ventral views. C. Cross-section of a midbody ring, posterior view. D. Midbody leg, lateral view. E. Both gonopods, anterior view. F. Right gonopod, lateral view. Scale bars: 0.5 mm (A–C), 0.3 mm (D), 0.2 mm (E) and 0.1 mm (F). Abbreviations: ex, exomere; sl, solenomere.
FIGURE 9 in Two new species of the millipede family Trichopolydesmidae from Bahia state northeastern Brazil, including a remarkable threatened troglobiont (Diplopoda, Polydesmida)
FIGURE 9. Phaneromerium trglopterygotum sp. nov. in natural habitat. A. Specimen on clay substrate. B. Sediment bank composed of clay and of millipede feces. C. Sediment bank with bat guano. D. Some millipede specimens on clay with bat guano. Photograph A, courtesy Jonas Gallão.
FIGURE 10 in Two new species of the millipede family Trichopolydesmidae from Bahia state northeastern Brazil, including a remarkable threatened troglobiont (Diplopoda, Polydesmida)
FIGURE 10. Map of Gruna da Serra Verde cave with the sections where specimens of Phaneromerium troglopterygotum sp. nov. were found. Use authorized by Grupo Bambuí de Pesquisas Espeleológicas.
FIGURE 6 in Two new species of the millipede family Trichopolydesmidae from Bahia state northeastern Brazil, including a remarkable threatened troglobiont (Diplopoda, Polydesmida)
FIGURE 6. SEM micrographs of Phaneromerium troglopterygotum sp. nov., male paratype. A. Head, anterior view. B. Head, ventral view. C. Anterior part of body, lateral view. D–F. Anterior, middle and posterior parts of body, respectively, dorsal views. Scale bars: 0.2 mm (A) and 0.5 mm (B–F).
FIGURE 2 in Two new species of the millipede family Trichopolydesmidae from Bahia state northeastern Brazil, including a remarkable threatened troglobiont (Diplopoda, Polydesmida)
FIGURE 2. Outcrops close to the entrance to Gruna da Serra Verde cave (left) and a humid microhabitat within the aphotic zone inside (right). The type locality of Phaneromerium troglopterygotum sp. nov., Coribe municipality, Bahia state, Brazil.
FIGURE 4 in Two new species of the millipede family Trichopolydesmidae from Bahia state northeastern Brazil, including a remarkable threatened troglobiont (Diplopoda, Polydesmida)
FIGURE 4. Phaneromerium troglopterygotum sp. nov., male paratype. A–C. Habitus, dorsal, lateral and ventral views, respectively. D. Antenna, lateral view. Photographs by K.V. Makarov, taken not to scale.
FIGURE 8 in Two new species of the millipede family Trichopolydesmidae from Bahia state northeastern Brazil, including a remarkable threatened troglobiont (Diplopoda, Polydesmida)
FIGURE 8. Phaneromerium troglopterygotum sp. nov., male paratype. A. Leg 7, lateral view. B & C. Left gonopod, mesal and lateral views, respectively. Scale bars: 0.2 mm (A) and 0.1 mm (B & C). Abbreviations: ex, exomere; sl, solenomere.
FIGURE 1 in Two new species of the millipede family Trichopolydesmidae from Bahia state northeastern Brazil, including a remarkable threatened troglobiont (Diplopoda, Polydesmida)
FIGURE 1. Location of the Gruna da Serra Verde cave and the Serra do Iuiu karst area in Bahia state, northeastern Brazil. Courtesy L. de Assis.
FIGURE 5 in Two new species of the millipede family Trichopolydesmidae from Bahia state northeastern Brazil, including a remarkable threatened troglobiont (Diplopoda, Polydesmida)
FIGURE 5. Phaneromerium troglopterygotum sp. nov., female paratype. A–C. Habitus, dorsal, lateral and ventral views, respectively. Photographs by K.V. Makarov, taken not to scale.
FIGURE 2 in Heteranthera yucatana (Pontederiaceae), a new, threatened species from the Mexican Yucatan Peninsula
FIGURE 2. Heteranthera (Pontederiaceae) from the Mexican Yucatan Peninsula. A–F. H. yucatana. A-B. Calichal, natural habit. C. Plant with inflorescences and flowers. D. Inflorescence. E–F. Flower. G–H. Heteranthera limosa. G. Flowers, H. Natural habitat. (C–F. H. yucatana. G. Carnevali & J.L. Tapia 6262, based upon the type collection, CICY; G–H. Heteranthera limosa. Photos: A. José R. Grande A., C–D. Germán Carnevali. E. Débora Carnevali Ramírez. B, F, G: Claudia Ramírez Díaz.
FIGURE 11 in A new species of Ilyobius Enderlein, 1910 (Megaloptera: Sialidae) from a threatened region in the Mantiqueira Mountain range (Brazil)
FIGURE 11. Ilyobius hauseri (Contreras-Ramos, Fiorentin & Urakami, 2005), male, genitalia. (A), (C) holotype, lateral and caudal, respectively; (B), (D) additional specimen collected in the type locality of the species. Scale bars, A = 0.25 mm; B–D = 0.2 mm.
FIGURE 10 in A new species of Ilyobius Enderlein, 1910 (Megaloptera: Sialidae) from a threatened region in the Mantiqueira Mountain range (Brazil)
FIGURE 10. Ilyobius erebus sp. nov., mature larvae. (A) prothoracic leg, internal; (B) prothoracic leg, external; (C) mesothoracic leg, internal; (D) mesothoracic leg, external; (E) metathoracic leg, external; (F), metathoracic leg, internal. Scale bars = 1 mm.
FIGURE 9 in A new species of Ilyobius Enderlein, 1910 (Megaloptera: Sialidae) from a threatened region in the Mantiqueira Mountain range (Brazil)
FIGURE 9. Ilyobius erebus sp. nov., mature larvae. (A) labrum, dorsal; (B) maxillolabial complex, ventral; (C) mandible, ventral; (D) antenna. Scale bars, A–D = 0.5 mm.
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.