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13 results for “anticipatory effects”
Data from: Environmental variation mediates the evolution of anticipatory parental effects
<p>Theory maintains that when future environment is predictable, parents should adjust the phenotype of their offspring to match the anticipated environment. The plausibility of positive anticipatory parental effects is hotly debated and the experimental evidence for the evolution of such effects is currently lacking. We experimentally investigated the evolution of anticipatory maternal effects in a range of environments that differ drastically in how predictable they are. Populations of the nematode <em>Caenorhabditis remanei</em>, adapted to 20°C, were exposed to a novel temperature (25°C) for 30 generations with either positive or zero correlation between parent and offspring environment. We found that populations evolving in novel environments that were predictable across generations evolved a positive anticipatory maternal effect, since they required maternal exposure to 25°C to achieve maximum reproduction in that temperature. In contrast, populations evolving under zero environmental correlation had lost this anticipatory maternal effect. Similar but weaker patterns were found if instead rate-sensitive population growth was used as a fitness measure. These findings demonstrate that anticipatory parental effects evolve in response to environmental change so that ill-fitting parental effects can be rapidly lost. Evolution of positive anticipatory parental effects can aid population viability in rapidly changing but predictable environments. </p>
Study of the Impact of Parental Note Taking on the Effectiveness of Anticipatory Guidance
ClinicalTrials.gov study NCT01014169. IPD Sharing: Not stated. Countries: 1. Publications: 9.
Data from: Environmental variation mediates the evolution of anticipatory parental effects
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The thermal environment of sperm affects offspring success: a test of the anticipatory paternal effects hypothesis in a broadcast spawner
<p>There has been an explosion of recent evidence that environments experienced by fathers or their ejaculates can influence offspring phenotypes (paternal effects). However, little is known about whether such effects are adaptive, which would have far-reaching implications for the many species facing rapidly changing environments. For example, some arguments suggest paternal effects might be a source of cross-generational plasticity, preparing offspring to face similar conditions to their father (anticipatory hypothesis). Alternatively, ejaculate-mediated effects on offspring may be non-adaptive by-products of stress. Here, we conduct an experiment to distinguish between these predictions, exposing ejaculates of the externally fertilizing mussel <i>Mytilus galloprovincialis</i> to ambient (19 °C) and high (24 °C) temperatures, then rearing offspring groups in temperatures that match and mismatch those of sperm. We find that, overall, high-treated sperm induced higher rates of normal offspring development, and higher success in transitioning to second-stage larvae, which may represent adaptive epigenetic changes or selection on sperm haplotypes. However, progeny of high-treated sperm did not perform better than those of ambient-treated sperm when rearing temperatures were high. Overall, these findings offer little support for anticipatory hypothesis and suggest instead that beneficial paternal effects may be eroded when offspring develop under stressful conditions.</p>
Anticipatory Muscle Control and Effect of Stabilizing Exercises in Patients With Subacute and Chronic Low Back Pain
ClinicalTrials.gov study NCT00201513. IPD Sharing: Not stated. Countries: 1. Publications: 4.
The thermal environment of sperm affects offspring success: a test of the anticipatory paternal effects hypothesis in a broadcast spawner
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Data from: Timing of maternal exposure to toxic cyanobacteria and offspring fitness in Daphnia magna: implications for the evolution of anticipatory maternal effects
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Data from: Weak evidence for anticipatory parental effects in plants and animals
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Effectiveness of Strengthened Anticipatory Guidance Used in the MOH Malaysia Infant Oral Health Care Programme
ClinicalTrials.gov study NCT06000293. IPD Sharing: NO. Countries: 0. Publications: 0.
Comparative Effects Of Exergaming And Otago Exercise On Anticipatory Postural Control And Sensory Integration In Older Adults
ClinicalTrials.gov study NCT07308353. IPD Sharing: Not stated. Countries: 1. Publications: 0.
The Effect of Oral Cryotherapy on Anticipatory, Acute and Late Nausea and Vomiting in Breast Cancer Patients
ClinicalTrials.gov study NCT05138627. IPD Sharing: Not stated. Countries: 1. Publications: 0.
Effects of WALKBOT-G Robot-assisted Gait Training on Anticipatory Posture Adjustment Function and Balance With Cerebral Palsy
ClinicalTrials.gov study NCT04884386. IPD Sharing: UNDECIDED. Countries: 1. Publications: 0.
Effects of Segmental Stabilization on the Anticipatory Postural Adjustment of Subjects With Lumbar Pain
ClinicalTrials.gov study NCT02815358. IPD Sharing: Not stated. Countries: 1. Publications: 0.
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