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49 results for “selfing ability”
Support for Baker's law: facultative self-fertilization ability decreases pollen limitation in experimental colonization
<p><strong>Support for Baker’s law: facultative self-fertilization ability decreases pollen limitation in experimental colonization (datasets for paper in the American Journal of Botany)<br></strong></p> <p>There are 2 files associated with this manuscript. The “PLseedsetindividual.csv” file contains seed set for the pollen limitation treatments for each plant in the experimental populations. Pollinator observation data is available in the “pollinator.csv” file</p> <p><br><strong>Description of the data and file structure:</strong></p> <p><strong>PLseedsetindividual.csv</strong></p> <ul> <li>source.population = one of the four source populations used to create our experimental populations</li> <li>autonomy= autonomous selfing category, high or low</li> <li>individual = plant id</li> <li>experimental.population = the id of the experimental population </li> <li>site = site ID</li> <li>size = size of experimental population, single or small</li> <li>date initiated = date experimental population was put in the field</li> <li>dayfromstartofexperiment = derived from date, the time from the start of the experiment that the experimental population was initiated</li> <li>treatment = the pollination treatment for that flower, control or supplemented</li> <li>seed number = seed set for the treated flower</li> </ul> <p><br><strong>Pollinator.csv</strong></p> <ul> <li>experimental.population = the id of the experimental population </li> <li>site = site ID</li> <li>start.date = day experimental population was initiated</li> <li>end.date = day the experimental popuation was taken out of the field</li> <li>source population = one of the four source populations used to create our experimental populations</li> <li>autonomy= autonomous selfing category, high or low</li> <li>size = size of experimental population, single or small</li> <li>number of plants = number of plants in the experimental population </li> <li>flowers day x (1–4) = number of flowers on day 1</li> <li>males day x (1-4) = number of flowers on day X</li> <li>day.<em>x</em>.poll.date = date of day 1 or day 2 pollinator observation </li> <li>day.<em>x</em>.poll.time = time of day 1 or day 2 pollinator observation </li> <li>bb.day.<em>x</em>, mb.day.x,, sb.day.x., = bumblebee, medium bee, small bee visits on day 1 or day 2</li> <li>total.poll.visits = The total number of pollinator visits across day 1 and day 2</li> <li>visits.per.flower = the number of flowers was averaged across day 1 and day 2. The total number of visits were then divided by the average flower number.</li> </ul>
How early does the selfing syndrome arise? Associations between selfing ability and flower size within populations of the mixed mater Collinsia verna
<p>Widespread associations between selfing rate and floral size within and among taxa suggest that these traits may evolve in concert. Does this association develop immediately, because of shared genetic/developmental control, or stepwise with selection shaping the evolution of one trait following the other? If the former, then association ought to appear within and across populations. We explore this fundamental question in three populations of the mixed-mater Collinsia verna where autonomous selfing (AS) ability has been shown to be under selection by the pollination environment. We grew clonal replicates of C. verna in a controlled environment to characterize broad-sense genetic correlations among traits within populations and to assess whether divergence in mating system and floral traits among these populations is consistent with their previously observed selection pressures. As predicted by their respective pollination environments, we demonstrate significant genetic divergence among populations in AS ability. However, patterns of divergence in floral traits (petal, stamen, and style size, stigmatic receptivity, and stigma-anther distance) were not as expected. Within populations, genetic variation in AS appeared largely independent from floral traits, except for a single weak negative association in one population between flower size and AS rate. Together, these results suggest that associations between selfing rate and floral traits across Collinsia species are not reflected at microevolutionary scales. If C. verna were to continue evolving toward the selfing syndrome, floral trait evolution would likely follow stepwise from mating system evolution.</p>
How early does the selfing syndrome arise? Associations between selfing ability and flower size within populations of the mixed mater Collinsia verna
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Data from: Selfing ability and drift load evolve with range expansion
Colonization at expanding range edges often involves few founders, reducing effective population size. This process can promote the evolution of self-fertilization, but implicating historical processes as drivers of trait evolution is often difficult and requires an explicit model of biogeographic history. In plants, contemporary limits to outcrossing are often invoked as evolutionary drivers of self-fertilization, but historical expansions may shape mating system diversity, with leading-edge populations evolving elevated selfing ability. In a widespread plant, Campanula americana, we identified a glacial refugium in the southern Appalachian Mountains from spatial patterns of genetic drift among 24 populations. Populations farther from this refugium have smaller effective sizes and fewer rare alleles. They also displayed elevated heterosis in among-population crosses, reflecting the accumulation of deleterious mutations during range expansion. While populations with elevated heterosis had reduced segregating mutation load, the magnitude of inbreeding depression lacked geographic pattern. The ability to self-fertilize was strongly positively correlated with the distance from the refugium and mutation accumulation—a pattern that contrasts sharply with contemporary mate and pollinator limitation. In this and other species, diversity in sexual systems may reflect the legacy of evolution in small, colonizing populations, with little or no relation to the ecology of modern populations.
Data from: Pollen limitation and autonomous selfing ability interact to shape variation in outcrossing rate across a species range
Premise of the study: Hermaphroditic plants commonly reproduce through a mixture of selfing and outcrossing. The degree to which outcrossing rates reflect the availability of outcross pollen, genetic differentiation in the ability to autonomously self-fertilize, or both is often unclear. Despite the potential for autonomy and the pollination environment to jointly influence outcrossing, this interaction is rarely studied. Methods: We reviewed literature testing whether the pollination environment or floral traits causing autonomous selfing predict outcrossing rate variation among populations. We also measured outcrossing rates in 23 populations of Campanula americana and examined associations with the pollination environment, autonomy, and their interaction. Key Results: Our review revealed that traits facilitating selfing were often negatively associated with outcrossing rates while most aspects of the pollination environment poorly predicted outcrossing. Populations of C. americana varied from mixed mating to highly outcrossing but variation was unrelated to population size, density, pollen limitation, or autonomous selfing ability. Outcrossing rate was significantly influenced by an interaction between autonomous selfing ability and pollen limitation. In highly autonomous populations, elevated pollen limitation was associated with reduced outcrossing, while there was no relationship for less autonomous populations. Conclusions: Both the ability to self autonomously and pollen limitation interact to shape outcrossing rates in C. americana. This work suggests autonomy affords mating system flexibility, though it is not ubiquitous in all populations across the species range. Interactions between traits influencing autonomy and pollen limitation are likely to explain variation in outcrossing rates among populations of flowering plants.
Emotional and work-related factors in the self-assessment of Work Ability
<p>Data on the study "<span>Emotional and work-related factors in the self-assessment of Work Ability"</span></p>
Enhancing Patient Ability to Understand and Utilize Complex Information Concerning Medication Self-management
ClinicalTrials.gov study NCT02820038. IPD Sharing: YES. Countries: 1. Publications: 1.
Effects of an Individual and Family Self-Management of Fall Prevention Program on Balance Ability and Fall-related Self-efficacy Among Chinese Post-Stroke Individuals
ClinicalTrials.gov study NCT06577662. IPD Sharing: YES. Countries: 1. Publications: 1.
Self-Help Plus to Enhance Early Development: A Cluster-Randomized Controlled Trial of Maternal Mental Health, Child Cognitive Abilities, and Socio-Behavioral Skills Among South Sudanese Refugee Mother
ClinicalTrials.gov study NCT07062341. IPD Sharing: NO. Countries: 1. Publications: 1.
The Ability of Chronic Pain Patients to Self-diagnose Their Chief Source of Low Back Pain
ClinicalTrials.gov study NCT06630676. IPD Sharing: YES. Countries: 1. Publications: 1.
Shell shape does not accurately predict self-righting ability in hatchling freshwater turtles
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Data from: Pollen limitation and autonomous selfing ability interact to shape variation in outcrossing rate across a species range
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Data from: Selfing ability and drift load evolve with range expansion
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Fig. 1 in High Fecundity, Rapid Development and Selfing Ability in Three Species of Viviparous Land Snails Phaedusinae (Gastropoda: Stylommatophora: Clausiliidae) from East Asia
Fig. 1. Tauphaedusa sheridani. (A) adults (F1 generation); (B) neonates; (C) clausilia; (D-E) - eggs and embryos from dissected adults. Scale bar = 1 mm. © 2018 Academia Sinica, Taiwan
Fig. 5 in High Fecundity, Rapid Development and Selfing Ability in Three Species of Viviparous Land Snails Phaedusinae (Gastropoda: Stylommatophora: Clausiliidae) from East Asia
Fig. 5. Comparison of the selected life-history traits in T. sheridani (SHE), T. tau (TAU), and S. jacobiana (JAC). Number of offspring concerns monthly fecundity of a pair of snails. © 2018 Academia Sinica, Taiwan
Fig. 4 in High Fecundity, Rapid Development and Selfing Ability in Three Species of Viviparous Land Snails Phaedusinae (Gastropoda: Stylommatophora: Clausiliidae) from East Asia
Fig. 4. Reproductive activity of T. sheridani (SHE), T. tau (TAU), and S. jacobiana (JAC) under humid and dry conditions: (A, C, E) number of intrauterine eggs per dissected individual; (B, D, F) percentage of intrauterine embryos at various developmental stages. © 2018 Academia Sinica, Taiwan
Fig. 3 in High Fecundity, Rapid Development and Selfing Ability in Three Species of Viviparous Land Snails Phaedusinae (Gastropoda: Stylommatophora: Clausiliidae) from East Asia
Fig. 3. Stereophaedusa jacobiana. (A) adult (F1 generation); (B) neonates; (C) clausilium; (D) dissected adult with eggs; (E-F) egg and embryos from dissected adults. Scale bar = 1 mm.
Fig. 2 in High Fecundity, Rapid Development and Selfing Ability in Three Species of Viviparous Land Snails Phaedusinae (Gastropoda: Stylommatophora: Clausiliidae) from East Asia
Fig. 2. Tauphaedusa tau. (A) adult (F1 generation); (B) neonates; (C) clausilia; (D-E) eggs and embryos from dissected adults. Scale bar = 1 mm. © 2018 Academia Sinica, Taiwan
Data from: A geographic cline in the ability to self-fertilize is unrelated to the pollination environment
<p>The reproductive assurance (RA) hypothesis predicts that the ability to autonomously self-fertilize should be favored in environments where a lack of mates or pollinators limits outcross reproduction. Because such limits to outcrossing are predicted to be most severe at range edges, elevated autonomy in peripheral populations is often attributed to RA. We test this hypothesis in 24 populations spanning the range of Campanula americana, including sampling at the range interior and three geographic range edges. We scored autonomous fruit set in a pollinator-free environment and detected clinal variation—autonomy increased linearly from the southern to the northern edge, and from the eastern to the western edge. We then address whether the cline reflects the contemporary pollination environment. We measured population size, plant density, pollinator visitation, outcross pollen limitation and RA in natural populations over two years. Most populations were pollen limited, and those that experienced higher visitation rates by bumblebees had reduced pollen limitation. Reproductive assurance, however, was generally low across populations and was unrelated to pollen limitation or autonomy. Neither pollen limitation nor RA displayed geographic clines. Finally, autonomy was not associated with pollinator visitation rates or mate availability. Thus, the data do not support the RA hypothesis; clinal variation in autonomy is unrelated to the current pollination environment. Therefore, geographic patterns of autonomy are likely the result of historical processes rather than contemporary natural selection for RA.</p>
Portuguese version of Self-Management Ability Questionnaire short-form for periodontitis
<p>Cross-cultural adaptation and validation of the Portuguese version of Self-Management Ability Questionnaire short-form for periodontitis</p>
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