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539 results for “disentangling”
Figure 2. A in Disentangling the divergence and cladogenesis in the freshwater crab species (Potamonautidae: Potamonautes perlatus sensu lato) in the Cape Fold Mountains, South Africa, with the description of two novel cryptic lineages
Figure 2. A maximum likelihood (ML) phylogram of the combined mtDNA sequences for the phylogenetic reconstruction of Potamonautes perlatus s.l. The ML node support is shown by bootstrap values above each branch (only values above 75% are shown). The values below the branches are bootstrap values for maximum parsimony (MP)/posterior probabilities for Bayesian inference (BI; the * indicates no support). The numbers next to each taxon name represent the individual specimens; no numbering is given to taxa for which the entire population occurs on one branch.
Disentangling the effects of male age and mating history: contrasting effects of mating history on pre-copulatory mating behaviour and paternity success
<p>Many studies ask whether older males are better at acquiring mates. Even so, how age affects reproductive success is still poorly understood because male age and mating history are confounded in most studies: older males usually have more mating experience. To what extent does mating history rather than age explain variation in male mating success? And how do mating history and male age determine paternity when there is also post-copulatory sexual selection? Here we experimentally manipulated the mating history of old and young males in the eastern mosquitofish (Gambusia holbrooki). We then recorded male mating behaviour and share of paternity (1259 offspring from 232 potential sires) when they competed for mates and fertilizations. Old males, and males with no mating experience, spent significantly more time approaching females, and attempting to mate, than did young males and those with greater mating experience. Male age and mating history interacted to affect paternity: old males benefited from having previous mating experience, but young males did not. Our results highlight that the age-related changes in male reproductive traits and in paternity that have been described in many taxa, may be partly attributable to male mating history and not simply to age itself.</p>
FIGURE 4. Hechtia marthae. A in In disentangling two species limits of Hechtia (Bromeliaceae: Hechtioideae) from Sierra Madre Occidental, a new species is discovered from Durango, Mexico
FIGURE 4. Hechtia marthae. A. Pistillate plant in bloom. B. Staminate plant in bloom. C. Detail of inflorescence with young fruits. D. Female flowers at anthesis. E. Male flowers at anthesis. Illustration by Alberto Guerra based on photographs by A, D. Ricardo Quirino-Olvera. B. Gustavo Romero-González. C. Adolfo Espejo-Serna from the specimen A. R. López-Ferrari et al. 2989 (UAMIZ). E and staminate rosette based of photographs by Ivón Ramírez-Morillo. D and pistillate rosette in based of photographs by Ricardo Quirino-Olvera.
FIGURE 1 in In disentangling two species limits of Hechtia (Bromeliaceae: Hechtioideae) from Sierra Madre Occidental, a new species is discovered from Durango, Mexico
FIGURE 1. Geographical distribution of Hechtia jaliscana, H. marthae and H. subalata. Biogeographical provinces are depicted in different colors; their limits are based on Morrone et al. (2017).
FIGURE 7. Hechtia subalata portraying a in In disentangling two species limits of Hechtia (Bromeliaceae: Hechtioideae) from Sierra Madre Occidental, a new species is discovered from Durango, Mexico
FIGURE 7. Hechtia subalata portraying a rosette in bloom, note the red coloration on the leaves. A. Pistillate inflorescence. B. Female flowers at anthesis. C. Branch with open fruits. D. Staminate inflorescence. E. Details of the male flowers with open exposing the pollen. F. Open flowers before anthesis. (Illustration by Alberto Guerra based of photographs by A, B. Omar Góngora. C-F, Ivón Ramírez-Morillo).
FIGURE 3. Hechtia jaliscana. A in In disentangling two species limits of Hechtia (Bromeliaceae: Hechtioideae) from Sierra Madre Occidental, a new species is discovered from Durango, Mexico
FIGURE 3. Hechtia jaliscana. A. General structure of a male individual in bloom. B. Bee visiting fragrant male flowers. C. Origin of the inflorescence in a female plant. D. Details of male flowers. E. Details of female flowers. F. Branch with male flowers. G. Branch with female flowers. H. Preserved ripe fruits. (Credits: A, D, F. Claudia Ramírez-Díaz. B, C. Ivón Ramírez-Morillo. E, G. Pablo Carrillo-Reyes. H. Fruit features taken from P. Carrillo-Reyes & D. Cabrera-Toledo 8880-A♀ (IBUG)).
FIGURE 2 in In disentangling two species limits of Hechtia (Bromeliaceae: Hechtioideae) from Sierra Madre Occidental, a new species is discovered from Durango, Mexico
FIGURE 2. Hechtia jaliscana in habitat. A. Structure of the rachis in the infructescence. B. Details of the structure of the staminate inflorescence at anthesis. C. Rosettes with male flowers in habitat. D. Individuals in habitat of tropical dry forests. (Credits: A, C. Ivón Ramírez-Morillo. B, D. Claudia Ramírez-Díaz).
FIGURE 6 in In disentangling two species limits of Hechtia (Bromeliaceae: Hechtioideae) from Sierra Madre Occidental, a new species is discovered from Durango, Mexico
FIGURE 6. Hechtia subalata: A. Detail of the branching with young fruits. B. Detail of a dry staminate inflorescence. C. Rosette with infructescence. D. Plants in habitat, showing the red coloration on leaves. (Credits: A, C. Sabina Ascencio. B. Ivón Ramírez-Morillo. D. Pablo Carrillo-Reyes).
FIGURE 5. Hechtia marthae. A in In disentangling two species limits of Hechtia (Bromeliaceae: Hechtioideae) from Sierra Madre Occidental, a new species is discovered from Durango, Mexico
FIGURE 5. Hechtia marthae. A. Plants in habitat. B. Infructescence with open fruits in habitat. C. Seeds. (Credits A-C. Ivón Ramírez-Morillo).
A basic community dynamics experiment: Disentangling deterministic and stochastic processes in structuring ecological communities
<p>Community dynamics are governed by two opposed processes: species sorting, which produces deterministic dynamics leading to an equilibrium state, and ecological drift, which produces stochastic dynamics. Despite a great deal of theoretical and empirical work aiming to demonstrate the predominance of one or the other of these processes, the importance of drift in structuring communities and maintaining species diversity remains contested. Here we present the results of a basic community dynamics experiment using floating aquatic plants, designed to measure the relative contributions of species sorting and ecological drift to community change over about a dozen generations. We found that species sorting became overwhelmingly dominant as the experiment progressed, and directed communities towards a stable equilibrium state maintained by negative frequency-dependent selection. The dynamics of any particular species depended on how far its initial frequency was from its equilibrium frequency, however, and consequently the balance of sorting and drift varied among species.</p>
FIG. 3 in Disentangling Morphological and Environmental Drivers of Foraging Activity in an Invasive Diurnal Gecko, Phelsuma laticauda
FIG. 3. Relationship between sex and SM.Avg. Whiskers extend no further than ±1.5X interquartile range, with data beyond that plotted individually.
FIG. 6 in Disentangling Morphological and Environmental Drivers of Foraging Activity in an Invasive Diurnal Gecko, Phelsuma laticauda
FIG. 6. (A) Position of Phelsuma laticauda on lizard FM spectrum as determined by PTM. Based on the cutoffs determined by Huey and Pianka (1981), with PTM <10% = SW forager and PTM> 30% = AF, P. laticauda is a classic SW forager along with Crotaphytus collaris and Oligosoma grande (Eifler and Eifler, 1999; Cooper et al., 2001). FMs with PTM 10–25% represent intermediate FMs, such as the ''cruise foraging'' of Chameleo jacksonii (Hagey et al., 2010). Many lacertids and teiids, such as Nucras tessellata and Aspidocelis uniparens, lie on the upper end of the spectrum (Huey and Pianka, 1981; Cooper et al., 2001). (B) Position of P. laticauda on gecko FM spectrum as determined by PTM. Most SW geckos have a PTM <5%, such as Chondrodactylus turneri and Gonatodes ocellatus (Persuad et al., 2003; Cooper, 2007). The majority of other geckos have a PTM> 10% (many of which have been classified as AF even though none come close to the extremely high PTMs of many AF lizards outside of the Gekkota infraorder), such as Goniurosaurus orientalis and Coleonyx Ʋariegatus (Kingsbury, 1989; Werner et al., 2004). Within geckos, P. laticauda is a more active SW forager, verging on the intermediate values of species such as Teratoscincus scincus (Seligmann et al., 2007).
Disentangling coastal groundwater level dynamics in a global dataset - data
<p>Data to reproduce the research study "Disentangling coastal groundwater level dynamics in a global dataset" by Nolte et al. containing:</p> <ol> <li>cluster_indices.csv: well identifier; cluster from k-means; country code (ISO 3166-1 alpha-2); 45 index values</li> <li>cluster_attributes.csv: well identifier; cluster from k-means; country code (ISO 3166-1 alpha-2); 28 attribute values</li> </ol> <p>These data enable cluster analysis and random forest modeling. However, please note that the repository does not include raw groundwater level time series data.</p> <p>The code to reproduce the cluster analysis and random forest modeling as conducted in the study can be made available upon request from the first author.</p>
Disentangling the effects of eutrophication and natural variability on macrobenthic communities across French coastal lagoons
<p>We present here the raw data and scripts to reproduce the results presented in the preprint "Disentangling the effects of eutrophication and natural variability on macrobenthic communities across French coastal lagoons" available on BioRxiv. Before using the scripts and associated data, we recommend reading the "readme" word document also available, which details the information available in the different data sheets. </p> <p>Preprint abstract : </p> <p>Coastal lagoons are transitional ecosystems that host a unique diversity of species and support many ecosystem services. Owing to their position at the interface between land and sea, they are also subject to increasing human impacts, which alter their ecological functioning. Because coastal lagoons are naturally highly variable in their environmental conditions, disentangling the effects of anthropogenic disturbances like eutrophication from those of natural variability is a challenging, yet necessary issue to address. Here, we analyze a dataset composed of macrobenthic invertebrate abundances and environmental variables (hydro-morphology, water, sediment and macrophytes) gathered across 29 Mediterranean coastal lagoons located in France, to characterize the main drivers of community composition and structure. Using correlograms, linear models and variance partitioning, we found that lagoon hydro-morphology (connection to the sea and lagoon surface), which affects the level of environmental variability (salinity and temperature), as well as lagoon-scale benthic habitat diversity (using macrophyte morphotypes) seemed to regulate macrofauna distribution, while eutrophication and associated stressors like low dissolved oxygen, acted upon the existing communities, mainly by reducing species richness and diversity. Furthermore, M-AMBI, a multivariate index composed of species richness, Shannon diversity and AMBI (AZTI's Marine Biotic Index) and currently used to evaluate the ecological state of French coastal lagoons, was more sensitive to eutrophication (18%) than to natural variability (9%), with nonetheless 49% of its variability explained jointly by both. To improve the robustness of benthic indicators like M-AMBI and increase the effectiveness of lagoon benthic habitat management, we call for a revision of the ecological groups at the base of the AMBI index and of the current lagoon typology which could be inspired by the lagoon-sea connection levels used in this study.</p>
Disentangling Pharmacological and Expectation Effects in Antidepressant Discontinuation
ClinicalTrials.gov study NCT05191277. IPD Sharing: YES. Countries: 1. Publications: 1.
Disentangling the Effect of Brain Insulin Resistance on Brain Health
ClinicalTrials.gov study NCT07374705. IPD Sharing: NO. Countries: 2. Publications: 0.
Data from: Disentangling the effects of key innovations on the diversification of Bromelioideae (Bromeliaceae)
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Data from: Stressor dominance and sensitivity-dependent antagonism: disentangling the freshwater effects of an insecticide among co-occuring agricultural stressors
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Data from: Disentangling precopulatory and postcopulatory sexual selection in polyandrous species
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Data from: Integrating 2D and 3D shell morphology to disentangle the palaeobiology of ammonoids: a virtual approach
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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.