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2,008 results for “presence”
The name of the game: Palaeoproteomics and radiocarbon dates further refine the presence and dispersal of caprines in Eastern and Southern Africa
<p><span>We report the first large-scale palaeoproteomics research on eastern and southern African zooarchaeological samples, thereby refining our understanding of early caprine (sheep and goat) pastoralism in Africa. Assessing caprine introductions is a complicated task because of their skeletal similarity to endemic wild bovid species and the sparse and fragmentary state of relevant archaeological remains. Palaeoproteomics has previously proved effective in clarifying species attributions in African zooarchaeological materials, but few comparative protein sequences of wild bovid species have been available. Using newly generated collagen type I sequences for wild species, as well as previously published sequences, we assess species attributions for elements originally identified as caprine or "unidentifiable bovid" from seventeen eastern and southern African sites that span seven millennia. We identified over 70% of the archaeological remains and the direct radiocarbon dating of domesticate specimens allows refinement of the chronology of caprine presence in both African regions. These results thus confirm earlier occurrences in eastern Africa and the systematic association of domesticated caprines with wild bovids at all archaeological sites. The combined biomolecular approach highlights repeatability and accuracy of the methods for conclusive contribution in species attribution of archaeological remains in dry African environments.</span></p>
Figure 4. Bermudacaris britayevi n in On the presence of the alpheid shrimp genus Bermudacaris Anker and Iliffe, 2000 (Crustacea: Decapoda: Caridea) in the Pacific Ocean, with description of a new species from Vietnam
Figure 4. Bermudacaris britayevi n. sp., holotype (NHM 2006.1217). (a) Second pereiopod, lateral view; (b) third pereiopod, dorsal view; (c) fifth pereiopod, lateral view; (d) same, propodus and dactylus, mesial view. Scale bar: 1 mm.
Figure 3. Bermudacaris britayevi n in On the presence of the alpheid shrimp genus Bermudacaris Anker and Iliffe, 2000 (Crustacea: Decapoda: Caridea) in the Pacific Ocean, with description of a new species from Vietnam
Figure 3. Bermudacaris britayevi n. sp., holotype (NHM 2006.1217). (a) Left cheliped, dorsomesial view; (b) same, ventrolateral view; (c) same, chela and carpus, mesial view; (d) same, chela enlarged, lateral view; (e) same, ischium, merus, and carpus, mesial view; (f) same, ischium, ventral view. Scale bars: 1 mm.
Figure 2. Bermudacaris britayevi n in On the presence of the alpheid shrimp genus Bermudacaris Anker and Iliffe, 2000 (Crustacea: Decapoda: Caridea) in the Pacific Ocean, with description of a new species from Vietnam
Figure 2. Bermudacaris britayevi n. sp., holotype (NHM 2006.1217). (a) Mandible, mesial view; (b) same, incisor process; (c) maxillule, lateral view; (d) same, ventral endite, mesial view; (e) maxilla, lateral view; (f) first maxilliped, lateral view; (g) same, posteromesial view of endopod and proximal portion of exopod; (h) second maxilliped, lateral view; (i) third maxilliped, lateral view; (j) same, detail of coxa; (k) same, ultimate segment, dorsomesial view. Scale bar: 1 mm.
Figure 1. Bermudacaris britayevi n in On the presence of the alpheid shrimp genus Bermudacaris Anker and Iliffe, 2000 (Crustacea: Decapoda: Caridea) in the Pacific Ocean, with description of a new species from Vietnam
Figure 1. Bermudacaris britayevi n. sp., holotype (NHM 2006.1217). (a) General body without cephalic and thoracic appendages, lateral view; (b) frontal region, dorsal view; (c) same, lateral view; (d) epistomial sclerite near ventral base of antennule; (e) antennule, first two segments of peduncle, lateral view; (f) uropod, dorsal view; (g) telson, dorsal view. Scale bars: 1 mm.
Presence and proportion of plants in biodiversity inventories conducted by undergraduate students enrolled in animal-related courses
<p>Dataset on biodiversity inventories conducted by 110 undergraduate students enrolled in animal-related courses using the iNaturalist platform.</p>
Growth of Thalassiosira gravida and Thalassiosira rotula across different levels of temperature, photoperiod, and microbiome presence
<p>The provided data represent maximum growth rates of the temperate diatom <em>Thalassiosira</em> <em>rotula</em> obtained from<span> the Harder Lab (University of Bremen; strain <em>T. rotula</em>_S16)</span> and the polar diatom <em>Thalassiosira</em> <em>gravida</em> was obtained <span>from the Norwegian culture collection of algae (NORCCA strain number UIO 478). Data were </span>assessed in a nanocosm (microtiter-plate) 7-day multi-stressor laboratory experiment conducted in November 2022. The experimental design includes different combinations of temperature (4°C; 9°C; 13.5°C), photoperiod (4:20; 16:8; 24:0) and microbiome presence (xenic; axenic) at which growth was assessed to evaluate interactive effects of abiotic factors (temperature & photoperiod) and biotic facors (interactions with microbiome bacteria). Moreover, the code to process the data for statistical analysis is provided.</p>
Dataset: Evolution of large Venusian coronae inferred from structural analyses and the presence of low-angle faults in chasmata
<p>The vector datasets mentioned in this article are available. You can find the Magellan SAR data and the Global Topography Data Records (GTDR) on NASA's Planetary Data System (PDS) website (specific links can be found on https://pdsgeosciences.wustl.edu/missions/magellan/index.htm). In addition, the stereo-derived topography dataset of Herrick et al. 2012 is also available on their personal website https://sites.google.com/alaska.edu/robertherrick/resources/stereo-derived-topography-for-venus.</p>
Data Sets: Unsteady Land-Sea Breeze Circulations in the Presence of a Synoptic Pressure Forcing
<p>{Mg (m/s): 0, 0.4, 1.2, 2 and α: 0°, and 180°}</p> <p>Consult the details in Allouche et al. (2023): https://doi.org/10.1002/qj.4552. The latter corresponds to the steady state simulations of these transient ones here.<br>All of these simulations have a domain extent (L_x, L_y, L_z=z_i) of (80 km, 5 km, 1.6 km). The numerical mesh (Nx, Ny, Nz) is (384, 24, 64). For plotting, the vertical levels vary for each variable. A variable at 'c_s nodes' is plotted at dz/2, dz, 2*dz, 3*dz, and so forth up to z_i. A variable on 'w nodes' is plotted at 0, dz, 2*dz, 3*dz, and so forth up to z_i. This information is given in the variable table below.</p> <p>These simulations are given in a netcdf format (.nc). One is able to download and reshape these matrices.</p>
Solitary foundation or colony fission in ants: an intraspecific study shows that worker presence and number increase colony foundation success
<p>Datasets for the paper published in Oecologia entitled "Solitary foundation or colony fission in ants: an intraspecific study shows that worker presence and number increase colony foundation success"</p> <p>Script_article.R : R code to analyze the data</p> <p>Data.txt : Growth data</p> <p>donnees_survie.txt : Survival data</p> <p>donnees_presence_nid.txt : Data of the presence of queens in the nest</p>
Tracing evolutionary trajectories in the presence of gene flow in South American temperate lizards (Squamata: Liolaemus kingii group)
<p>Evolutionary processes behind lineage divergence often involve multidimensional differentiation. However, in the context of recent divergences, the signals exhibited by each dimension may not converge. In such scenarios, incomplete lineage sorting, gene flow, and scarce phenotypic differentiation are pervasive. Here, we integrated genomic (RAD loci of 90 individuals), phenotypic (linear and geometric traits of 823 and 411 individuals, respectively), spatial, and climatic data to reconstruct the evolutionary history of a speciation continuum of liolaemid lizards (<em>Liolaemus kingii</em> group). Specifically, we (i) inferred the population structure of the group and contrasted it with the phenotypic variability; (ii) assessed the role of post-divergence gene flow in shaping phylogeographic and phenotypic patterns; and (iii) explored eco-geographic drivers of diversification across time and space. We inferred eight genomic clusters exhibiting leaky genetic borders coincident with geographic transitions. We also found evidence of post-divergence gene flow resulting in transgressive phenotypic evolution in one species. Predicted ancestral niches unveiled suitable areas in southern and eastern Patagonia during glacial and interglacial periods. Our study underscores integrating different data and model-based approaches to determine the underlying causes of diversification, a challenge faced in the study of recently diverged groups. We also highlight <em>Liolaemus</em> as a model system for phylogeographic and broader evolutionary studies.</p>
Population size differences can lead to biases in phylogenetic inference and introgression detection in the presence of purifying selection
<p>Phylogenetic reconstruction and introgression detection rely on an assumption about the probability distribution of gene tree topologies. Recently, evidence has emerged that population size differences can affect the probability distribution of gene tree topologies in the presence of purifying selection. Here, using the population genetic simulator SLiM, we provide evidence that in the presence of purifying selection, population size differences can lead to biases in phylogenetic inference. We also provide evidence that in the presence of purifying selection, population size differences can cause statistics used for introgression detection to exhibit patterns resembling those caused by introgression. In addition, we present a theoretical analysis showing that the occurrence of population size–dependent gene tree distributions is an inherent consequence of purifying selection. Our work underscores the importance of considering the potential confounding effect of purifying selection on phylogenetic inference and introgression detection.</p>
FIG. 3 in DNA barcoding revealed the presence of the invasive freshwater mussel Sinanodonta aff. woodiana (Lea, 1834) in Afghanistan
FIG. 3. — The Bayesian phylogenetic tree on the basis of 37 unique COI sequences of Sinanodonta sp. and related taxa, including one new sequence from Afghanistan (red) and 36 sequences from GenBank. Margaritifera laosensis (I. Lea, 1863) and M. dahurica (Middendorff, 1850) are the outgroups. The numbers above branches show the bootstrap support value. The scale bar represent the branch lengths.
FIG. 2 in DNA barcoding revealed the presence of the invasive freshwater mussel Sinanodonta aff. woodiana (Lea, 1834) in Afghanistan
FIG. 2. — Non-indigenous Sinanodonta aff. woodiana (Lea, 1834) in Afghanistan: A, live samples of the mussels settled in the river, Qala-I-Zal (10 August 2020); B, shell exterior view of the mussels: a, b and c represent very small, small and medium size classes, respectively.
Fig. 4 in Some Changes In Oxidative Processes In The Organs Of Wheat Seedlings (Triticum Aestivum L.) In The Presence Of Antimycin A
Fig. 4. The electrophoretic activity of catalase in different parts of the first leaves (2, 4, 6 - the apical parts, 1, 3, 5 – basal parts).
Figure 5 in Presence of the Pink shrimp Farfantepenaeus brasiliensis (Latreille, 1817) in the coastal lagoons of Uruguay (Crustacea: Decapoda: Penaeoidea)
Figure 5. Box plot of percentage of rostral length (mm) in relation to cephalothorax length (mm) (%RL) for Farfantepenaeus brasiliensis and F. paulensis caught in the Rocha lagoon in April 2019.
FIG. 5 in The first molecular confirmation of the presence of the genus Ladislavella (Gastropoda: Lymnaeidae) in the European part of Russia
FIG. 5. Maximum likelihood phylogeny of Ladislavella species based on the COI barcode sequence dataset. The red color indicates our sequence from Penza City. Black numbers near nodes are bootstrap support values. Scale bar indicates the branch length. РИС. 5. Молекулярная филогения с испольЗованием метода максимального правдоподобия на основе нуклеотидных последовательностей фрагмента митохондриального гена COI. Красным цветом обоЗначен наш сиквенс для обраЗца иЗ ПенЗы. Черные числа в уЗлах – Значения индексов бутстреп-поддерЖки. Масштабная линейка укаЗывает длину ветвей.
FIG. 1 in The first molecular confirmation of the presence of the genus Ladislavella (Gastropoda: Lymnaeidae) in the European part of Russia
FIG. 1. View of the studied biotope in different seasons of the year. Photos taken on 15.04.2022 (A), 05.06.2022 (B), 20.07.2022 (C). РИС. 1. Вид исследованного биотопа в раЗные сеЗоны года. Фотографии сделаны 15.04.2022 (А), 05.06.2022 (В), 20.07.2022 (С).
FIG. 7 in The first molecular confirmation of the presence of the genus Ladislavella (Gastropoda: Lymnaeidae) in the European part of Russia
FIG. 7. Some stages of embryonic development of Ladislavella cf. terebra. in the lab culture. The successive photo images were made on: 06.05.2022 (A), 14.05.2022 (B, C), 17.05.2022 (D). Scale bars: 0.2 mm (C), 0.25 mm (D). РИС. 7. Некоторые стадии Эмбрионального раЗвития Ladislavella cf. terebra в лабораторной культуре. Фото были сделаны: 06.05.2022 (A), 14.05.2022 (B, C), 17.05.2022 (D). Масштабная линейка: 0.2 мм (C), 0.25 мм (D).
FIG. 6 in The first molecular confirmation of the presence of the genus Ladislavella (Gastropoda: Lymnaeidae) in the European part of Russia
FIG. 6. The ciliate Epistylis sp. on surface of the shell of Ladislavella cf. terebra. РИС. 6. Колонии инфуЗорий Epistylis sp. на поверхности раковины прудовика Ladislavella cf. terebra.
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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.