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2,315 results for “maintainability”
Figure 1. Adult female Maevia inclemens. 1-2, 6 in Stabilizing selection to maintain the two male forms of the jumping spider Maevia inclemens (Araneae: Salticidae: Marpissina), version 2
Figure 1. Adult female Maevia inclemens. 1-2, 6, Feeding on a small fly (Diptera: Brachycera). 3-4, Feeding on a small robber fly (Diptera: Ascilidae). With the exception of Figure 5:8, only three M. inclemens individuals, two males and one female, all photographed on plants in the laboratory, are shown in this paper. All were collected in Massachusetts, June 2020.
Figure 4 in Stabilizing selection to maintain the two male forms of the jumping spider Maevia inclemens (Araneae: Salticidae: Marpissina), version 2
Figure 4. Four sequential positions of a male (1-4) during the successful courtship of a female Paraphidippus aurantius (Lucas 1833) on a plant in the laboratory. Males were placed on plants with three recently molted females, all from Greenville County, South Carolina. In each case the female stopped moving soon after she sighted the male, and the male advanced to mate successfully when she did not turn to face him as he stepped from side to side. In this example the female stopped moving at a distance of about 10 cm from the approaching male. The subsequent mating included insertion of each pedipalp on the respective side of the epigynum, and occupied more than 20 minutes. P. aurantius males will cohabit with and defend penultimate females (Thurlow 2016), and their large chelicerae are associated with the ritual male-male combat (agonistic behavior) that may ensue. This represents a pattern seen in many other salticids (e.g., Lyssomanes viridis, Tedore & Johnsen 2012, 2013, 2015), in which male-male contests account for most sexual selection. At the other end of the spectrum of sexual selection lie the highly ornamented salticids of the genus Maratus, for which male-male contests are virtually unknown (save one species), and a female may examine the details of male ornamentation up-close before acceptance (Otto & Hill 2021). Most salticids appear to fall somewhere between these two extremes, relying to some extent on both male-male combat and active selection by females.
Heterocypris incongruens maintains an egg bank in stormwater habitats and influences the development of larval mosquito, Culex restuans
<p>Dormant propagules can provide a rapid colonization source for temporary aquatic habitats and set the trajectory for community dynamics, yet the egg banks of stormwater management systems have received little attention. We asked which species hatched from the sediment of drainage ditches in Champaign County, IL, and found bdelloid rotifers and ostracods (<em>Heterocypris incongruens</em>) to be the most common taxa. These sites also are colonized by mosquitoes, and we established laboratory experiments to examine interspecific interactions between common co-occurring taxa. Culex restuans larvae were reared in the presence or absence of <em>H. incongruens</em> at two intra- and interspecific densities (20 or 40 total individuals) and their survivorship to adulthood, development time to adulthood, adult body size, and sex ratio were determined. Survival for Cx. restuans was significantly lower at high larval density than at low larval density in both treatments. Culex restuans larvae reared in the presence of H. incongruens had a shorter development time to adulthood and emerged as larger adults compared to those reared in the absence of <em>H. incongruens</em>. The sex ratios in the <em>H. incongruens</em> treatments were female-biased whereas those in the Culex-only treatments were male-biased. These differences may have epidemiological implications, as only female mosquitoes serve as disease vectors. Our results emphasize the importance of understanding interspecific interactions in influencing larval mosquito development traits.</p>
Dataset for: Spawning fish maintain trophic synchrony across time and space beyond thermal drivers
<p><span>Increasing ocean temperature will speed up physiological rates of ectotherms. In fish, this is suggested to cause earlier spawning, due to faster oocyte growth rates, causing spawning time to potentially become decoupled to the timing of the offspring's food resources. A phenomenom referred to as trophic asynchrony. We used biological data, including body length, otolith information, and gonad developmental stages collected from > 125,000 individual Northeast Arctic cod (<em>Gadus morhua</em>) sampled between 59 and 73 °N in 1980-2019. Combined with experimental data of oocyte growth rates, our analysis shows that cod spawned progressively earlier by about a week per decade, partly due to ocean warming. It also appears that spawning times vary by more than 40 days, depending on year and spawning location. The significant plasticity in spawning time seems to be fine-tuned to the local phytoplankton spring bloom phenology. This ability to partly overcome thermal drivers could allow individuals to phenologically modulate their spawning time to maximize fitness by closely tracking local environmental conditions important for offspring survival. This finding highlights a new dimension for trophic match-mismatch and should be an important consideration in models used to predict phenology dynamics in a warmer climate. </span></p>
Belowground niche partitioning is maintained under extreme drought
<p>Belowground niche partitioning presents a key mechanism maintaining species coexistence and diversity. Its importance is currently reinforced under climate-change-altering soil hydrological conditions. However, experimental tests examining the magnitude of its change under climate change are scarce. We combined measurements of oxygen stable isotopes to infer plant water-uptake depths and extreme drought manipulation in grasslands. Belowground niche partitioning was evidenced by different water-uptake depths of co-occurring species under ambient and extreme drought conditions despite an increased overlap among species due to a shift to shallower soil layers under drought. A co-occurrence of contrasting strategies related to change of species water-uptake depths' distribution was likely key for species to maintain some extent of belowground niche partitioning and could contribute to stabilizing coexistence under drought. Our results suggest that belowground niche partitioning could mitigate negative effects on diversity imposed by extreme drought under future climate.</p>
Data from: competition for time: evidence for an overlooked, diversity-maintaining competitive mechanism
<p>Understanding how diversity is maintained in plant communities requires that we first understand the mechanisms of competition for limiting resources. In ecology, there is an underappreciated, but fundamental distinction between systems in which the depletion of limiting resources reduces the growth rates of competitors versus systems in which resource depletion reduces the time available for competitors to grow, a mechanism we call "competition for time." Importantly, modern community ecology, and our framing of the coexistence problem are built on the implicit assumption that competition reduces the growth rate. However, recent theoretical work suggests competition for time may be the predominant competitive mechanism in a broad array of natural communities, a significant advance given coexistence follows naturally when species compete for time. In this study we first introduce competition for time conceptually using a simple model of interacting species. Then, we perform an experiment in a Mediterranean annual grassland to determine whether competition for time is an important competitive mechanism in a field system. Indeed, we find that species respond to increased competition through reductions in their lifespan rather than their rate of growth. In total, our study suggests competition for time may be overlooked as a mechanism of biodiversity maintenance.</p>
PROACT Xa - A Trial to Determine if Participants With an On-X Aortic Valve Can be Maintained Safely on Apixaban
ClinicalTrials.gov study NCT04142658. IPD Sharing: Not stated. Countries: 1. Publications: 21.
Maintaining Optimal HVNI Delivery Using Automatic Titration of Oxygen in Preterm Infants
ClinicalTrials.gov study NCT05030012. IPD Sharing: NO. Countries: 1. Publications: 2.
Maintaining Nonsmoking
ClinicalTrials.gov study NCT01162239. IPD Sharing: NO. Countries: 1. Publications: 1.
Maintaining Nonsmoking: Older Smokers - 1
ClinicalTrials.gov study NCT00086385. IPD Sharing: Not stated. Countries: 1. Publications: 4.
Efficacy and Safety of Dexlansoprazole MR on Maintaining Healing in Subjects With Healed Erosive Esophagitis
ClinicalTrials.gov study NCT00255164. IPD Sharing: Not stated. Countries: 1. Publications: 3.
Post Photorefractive Keratectomy (PRK) Use of an Eye Shield for Maintaining Vision and Mitigating Pain
ClinicalTrials.gov study NCT01592643. IPD Sharing: Not stated. Countries: 1. Publications: 1.
Comparison of Dexlansoprazole MR to Placebo on the Ability to Maintain Healing in Subjects With Healed Erosive Esophagitis
ClinicalTrials.gov study NCT00255151. IPD Sharing: Not stated. Countries: 1. Publications: 1.
Pharmacokinetics, Efficacy, and Safety of Perampanel Oral Suspension on Seizure Frequency in Pediatric Subjects Maintained on One to Three Stable Antiepileptic Drugs
ClinicalTrials.gov study NCT01527006. IPD Sharing: Not stated. Countries: 1. Publications: 1.
Fetal Neurobehavior in Non-methadone Maintained Women in Substance Abuse Treatment
ClinicalTrials.gov study NCT00522626. IPD Sharing: Not stated. Countries: 1. Publications: 2.
Darbe Plus IV Iron to Decrease Transfusions While Maintaining Iron Sufficiency in Preterm Infants
ClinicalTrials.gov study NCT05340465. IPD Sharing: YES. Countries: 1. Publications: 1.
Investigation of Maintaining Visual Performance Achieved With Cyclosporine Therapy
ClinicalTrials.gov study NCT02121847. IPD Sharing: Not stated. Countries: 1. Publications: 1.
Trial of Low and High Intensity Strategies to Maintain BP Control
ClinicalTrials.gov study NCT00760552. IPD Sharing: Not stated. Countries: 1. Publications: 5.
Paramedic Coached ED Care Transitions to Help Older Adults Maintain Their Health
ClinicalTrials.gov study NCT02520661. IPD Sharing: NO. Countries: 1. Publications: 1.
Improving Effective Contraceptive Use Among Opioid-maintained Women: Stage II
ClinicalTrials.gov study NCT02411357. IPD Sharing: Not stated. Countries: 1. Publications: 1.
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.