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1,029 results for “altitude”
Data from: Comparative transcriptomic analysis revealed adaptation mechanism of Phrynocephalus erythrurus, the highest altitude lizard living in the Qinghai-Tibet Plateau
Background: Organisms living at high altitudes must overcome three major environmental challenges: hypoxia, cold, and intense UV radiation. The molecular mechanisms that enable these challenges to be overcome have mainly been studied in endothermic organisms; relatively little attention has been paid to poikilothermic species. Here, we present deep transcriptome sequencing in two closely related lizards, the high altitude-dwelling Phrynocephalus erythrurus and the lowland-dwelling P. putjatia, to identify candidate genes under positive selection and to explore the convergent evolutionary adaptation of poikilothermic animals to high altitude life. Results: More than 70 million sequence reads were generated for each species via Illumina sequencing. De novo assembly produced 56,845 and 63,140 transcripts for P. erythrurus and P. putjatia, respectively. P. erythrurus had higher Ka/Ks ratios than P. putjatia, implying an accelerated evolutionary rate in the high altitude lizard lineage. 206 gene ontology (GO) categories with accelerated evolutionary rates and 43 candidate positively selected genes were detected along the P. erythrurus lineage. Some of these GO categories have functions associated with responses to hypoxia, energy metabolism and responses to UV damage. We also found that the high-altitude ranid frog R. kukunoris had higher Ka/Ks ratios than the closely related low-altitude frog R. chensinensis, and that the functional categories with accelerated evolutionary rates in R. kukunoris overlapped extensively with those detected along the P. erythrurus lineage. Conclusions: The mechanisms of high altitude adaptation in P. erythrurus were tentatively inferred. By comparing two pairs of low- and high-altitude poikilothermic species, we found that similar functional categories had undergone positive selection in high altitude-dwelling Phrynocephalus and Rana lineages, indicating that similar mechanisms of adaptation to high altitude might have evolved in both genera. Our findings provide important guidance for future functional studies on high altitude adaptation in poikilothermic animals.
Supplementary material 1 from: Belousov IA, Kabak II (2021) Yalongaphaenops erwini gen. et sp. nov., the world's most high-altitude hypogean trechine beetle from China (Coleoptera, Carabidae, Trechinae). In: Spence J, Casale A, Assmann T, Liebherr JК, Penev L (Eds) Systematic Zoology and Biodiversity Science: A tribute to Terry Erwin (1940-2020). ZooKeys 1044: 197-220. https://doi.org/10.3897/zookeys.1044.62572
Table S1
Figures 2-6 from: Belousov IA, Kabak II (2021) Yalongaphaenops erwini gen. et sp. nov., the world's most high-altitude hypogean trechine beetle from China (Coleoptera, Carabidae, Trechinae). In: Spence J, Casale A, Assmann T, Liebherr JК, Penev L (Eds) Systematic Zoology and Biodiversity Science: A tribute to Terry Erwin (1940-2020). ZooKeys 1044: 197-220. https://doi.org/10.3897/zookeys.1044.62572
Figures 2-6 Yalongaphaenops erwini gen. et sp. nov. 2 forebody 3 right mandible 4–6 microsculpture: 4 occiput 5 disc of pronotum 6 disc of elytra near suture.
Figure 9 from: Belousov IA, Kabak II (2021) Yalongaphaenops erwini gen. et sp. nov., the world's most high-altitude hypogean trechine beetle from China (Coleoptera, Carabidae, Trechinae). In: Spence J, Casale A, Assmann T, Liebherr JК, Penev L (Eds) Systematic Zoology and Biodiversity Science: A tribute to Terry Erwin (1940-2020). ZooKeys 1044: 197-220. https://doi.org/10.3897/zookeys.1044.62572
Figure 9 Male genitalia of Yalongaphaenops erwini gen. et sp. nov. A lateral view (holotype) B dorsal view (paratype).
Map 2 from: Belousov IA, Kabak II (2021) Yalongaphaenops erwini gen. et sp. nov., the world's most high-altitude hypogean trechine beetle from China (Coleoptera, Carabidae, Trechinae). In: Spence J, Casale A, Assmann T, Liebherr JК, Penev L (Eds) Systematic Zoology and Biodiversity Science: A tribute to Terry Erwin (1940-2020). ZooKeys 1044: 197-220. https://doi.org/10.3897/zookeys.1044.62572
Map 2 Relief map of the area nearby the type locality of Y. erwini gen. et sp. nov. The yellow line shows the closest distance to the upper forest limit
Data from: Two extended haplotype blocks are associated with adaptation to high altitude habitats in East African honey bees
Understanding the genetic basis of adaption is a central task in biology. Populations of the honey bee Apis mellifera that inhabit the mountain forests of East Africa differ in behavior and morphology from those inhabiting the surrounding lowland savannahs, which likely reflects adaptation to these habitats. We performed whole genome sequencing on 39 samples of highland and lowland bees from two pairs of populations to determine their evolutionary affinities and identify the genetic basis of these putative adaptations. We find that in general, levels of genetic differentiation between highland and lowland populations are very low, consistent with them being a single panmictic population. However, we identify two loci on chromosomes 7 and 9, each several hundred kilobases in length, which exhibit near fixation for different haplotypes between highland and lowland populations. The highland haplotypes at these loci are extremely rare in samples from the rest of the world. Patterns of segregation of genetic variants suggest that recombination between haplotypes at each locus is suppressed, indicating that they comprise independent structural variants. The haplotype on chromosome 7 harbors nearly all octopamine receptor genes in the honey bee genome. These have a role in learning and foraging behavior in honey bees and are strong candidates for adaptation to highland habitats. Molecular analysis of a putative breakpoint indicates that it may disrupt the coding sequence of one of these genes. Divergence between the highland and lowland haplotypes at both loci is extremely high suggesting that they are ancient balanced polymorphisms that greatly predate divergence between the extant honey bee subspecies.
Figure 49 in Antikuna, a new genus with seven new species from Peru (Araneae: Theraphosidae: Theraphosinae) and the highest altitude record for the family
Figure 49. Distribution map of Antikuna gen. nov. in Peru. Prepared by M. Hüsser.
ADS-B anomaly detection in the surveillance of low-altitude aircrafts
Open the record for dataset details and reuse information.
Figs 17, 18 in Scorpions of the Brandberg Massif, Namibia: Species richness inversely correlated with altitude
Figs 17, 18. Adult males, habitus in life: (17) Hadogenes tityrus (Simon, 1888); (18) Opistophthalmus carinatus (Peters, 1861).
Figs 19, 20 in Scorpions of the Brandberg Massif, Namibia: Species richness inversely correlated with altitude
Figs 19, 20. Opistophthalmus adult males, habitus in life: (19) O. lamorali Prendini, 2000; (20) O. jenseni (Lamoral, 1972).
FIGURE 3 in A new species of Pleroma (Melastomataceae) from high-altitude grasslands of the state of São Paulo, Brazil
FIGURE 3. Distribution map of Pleroma curucutuense.
Acetazolamide for the Prevention of High Altitude Illness: a Comparison of Dosing
ClinicalTrials.gov study NCT01993667. IPD Sharing: Not stated. Countries: 1. Publications: 0.
Three New Ideas to Protect Special Forces From the Stress of High Altitude
ClinicalTrials.gov study NCT02463357. IPD Sharing: NO. Countries: 1. Publications: 0.
Effects of RIC on Cognitive Function and Blood Oxygen Levels in Unacclimatized Adult at High Altitude
ClinicalTrials.gov study NCT03728114. IPD Sharing: UNDECIDED. Countries: 0. Publications: 8.
Use of NIRS in Preterm Population Born at Altitude
ClinicalTrials.gov study NCT04639583. IPD Sharing: NO. Countries: 1. Publications: 0.
Dario Blood Glucose Monitoring System - Android Devices Altitude Evaluation Study
ClinicalTrials.gov study NCT02916563. IPD Sharing: NO. Countries: 1. Publications: 0.
Effects of Aircraft Cabin Altitude on Passenger Comfort and Discomfort
ClinicalTrials.gov study NCT00326703. IPD Sharing: Not stated. Countries: 0. Publications: 1.
A Study of The Effect of Altitude on Mircera (Methoxy Polyethylene Glycol-Epoetin Beta) Dose Requirements in Participants With Chronic Renal Anemia in Pre-Dialysis or Dialysis
ClinicalTrials.gov study NCT01519947. IPD Sharing: Not stated. Countries: 1. Publications: 0.
High Altitude and Exogenous Carbohydrate Oxidation
ClinicalTrials.gov study NCT03851744. IPD Sharing: NO. Countries: 1. Publications: 0.
Protocol for the Evaluation of Dario™ BGMS Performance at Elevated Altitude
ClinicalTrials.gov study NCT02352298. IPD Sharing: NO. Countries: 1. Publications: 0.
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Allen Brain Atlas
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DANDI Archive for NWB datasets
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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.