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59 results for “sperm quality”
Data from: Experimental heatwaves negatively impact sperm quality in the zebra finch
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Data from: Impaired sperm quality, delayed mating but no costs for offspring fitness in crickets winning a fight
The outcome of male-male contest competition is known to affect male mating success and is believed to confer fitness benefits to females through preference for dominant males. However, by mating with contest winners, females can incur significant costs spanning from decreased fecundity to negative effects on offspring. Hence identifying costs and benefits of male dominance on female fitness is crucial to unravel the potential for a conflict of interests between the sexes. Here we investigated males' pre- and post-copulatory reproductive investment and its effect on female fitness after a single contest a using the field cricket Gryllus bimaculatus. We allowed males to fight, and immediately measured their mating behaviour, sperm quality, and offspring viability. We found that males experiencing a fight, independently of the outcome, delayed matings but their courtship effort was not affected. However, winners produced sperm of lower quality (viability) compared to losers and to males that did not experience fighting. Results suggest a trade-off in resource allocation between pre- and post-mating episodes of sexual selection. Despite lower ejaculate quality we found no fitness costs (fecundity and viability of offspring) for females mated to winners. Overall our findings highlight the importance of considering fighting ability when assessing male reproductive success, as winners may be impaired in their competitiveness at a post-mating level.
Effect of Oocyte Denudation Time and Intracytoplasmic Sperm Injection Time on Embryo Quality
ClinicalTrials.gov study NCT05448859. IPD Sharing: UNDECIDED. Countries: 0. Publications: 1.
The Effects of Autologous Platelet-rich Plasma Supplement During Sperm Cryopreservation on Post-cryopreserved Sperm Quality
ClinicalTrials.gov study NCT06258759. IPD Sharing: YES. Countries: 1. Publications: 0.
Data from: Impaired sperm quality, delayed mating but no costs for offspring fitness in crickets winning a fight
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Data from: Modification of sperm quality after sexual abstinence in Seba's short-tailed bat, Carollia perspicillata.
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Data from: Ejaculate quality and constraints in relation to sperm competition levels among eutherian mammals
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Chronic alcohol-induced dysbiosis of the gut microbiota and gut metabolites impairs sperm quality
GEO Series GSE192522. Mus musculus. 6 samples. Type: Expression profiling by high throughput sequencing.
Identification of small noncoding RNAs as sperm quality biomarkers for in vitro fertilization
GEO Series GSE110190. Homo sapiens. 87 samples. Type: Non-coding RNA profiling by high throughput sequencing.
The sperm quality in DIO male mice is linked to the NF-κB signaling and Ppp2ca expression in the hypothalamus
GEO Series GSE284408. Mus musculus. 6 samples. Type: Expression profiling by high throughput sequencing.
Data from: Male investments in high quality sperm improve fertilization success, but may have negative impact on offspring fitness in whitefish
Many ejaculate traits show remarkable variation in relation to male social status. Males in disfavoured (subordinate) mating positions often invest heavily on sperm motility but may have less available resources on traits (e.g., secondary sexual ornaments) that improve the probability of gaining matings. Although higher investments in sperm motility can increase the relative fertilization success of subordinate males, it is unclear whether status-dependent differences in sperm traits could have any consequences for offspring fitness. We tested this possibility in whitefish (Coregonus lavaretus L.) by experimentally fertilizing the eggs of 24 females with the sperm of either highly-ornamented (large breeding tubercles, dominant) or less-ornamented (small tubercles, subordinate) males (split-clutch breeding design). In comparison to highly-ornamented individuals, less-ornamented males had higher sperm motility, which fertilized the eggs more efficiently, but produced embryos with impaired hatching success. Also offspring size and body condition were lower among less-ornamented males. Furthermore, sperm motility was positively associated with the fertilization success and offspring size, but only in highly-ornamented males. Together our results indicate that male investments on highly motile (fertile) sperm is not necessarily advantageous during later offspring ontogeny and that male status-dependent differences in sperm phenotype may have important effects on offspring fitness in different life-history stages.
Effects of Soluble Fiber Supplements on Sperm Quality in Males With Obesity: a Randomized Trial
ClinicalTrials.gov study NCT07112248. IPD Sharing: Not stated. Countries: 0. Publications: 0.
The Effect of Supplementation With Fish Oil (EPAX EVOLVE 05) on Sperm Quality
ClinicalTrials.gov study NCT06950203. IPD Sharing: YES. Countries: 1. Publications: 0.
Effect of Dietary DHA Supplementation on Sperm Quality
ClinicalTrials.gov study NCT01368484. IPD Sharing: Not stated. Countries: 1. Publications: 0.
The Influence of Urate-lowering Therapy on Sperm Quality of Male Gouty Patients：A Prospective Cohort Study
ClinicalTrials.gov study NCT04213534. IPD Sharing: Not stated. Countries: 1. Publications: 0.
Evaluation of Personalised Support Program Effectiveness in Sperm Quality Improvement
ClinicalTrials.gov study NCT03475199. IPD Sharing: Not stated. Countries: 1. Publications: 0.
The Effect of Methotrexate on Sperm Quality in Men With Inflammatory Bowel Disease
ClinicalTrials.gov study NCT02461784. IPD Sharing: Not stated. Countries: 1. Publications: 0.
Sperm Quality in Consecutive Sperm Samples After 4-7 Days and 2 Hours of Sexual Abstinence
ClinicalTrials.gov study NCT02667080. IPD Sharing: NO. Countries: 1. Publications: 0.
Probiotics on Sperm Quality in Male Infertility Patients
ClinicalTrials.gov study NCT07345455. IPD Sharing: UNDECIDED. Countries: 1. Publications: 0.
The Human Sperm Survival Assay (HSSA) as an Internal Quality Control for the IVF Consumables (REPROTOX 2)
ClinicalTrials.gov study NCT05100784. IPD Sharing: Not stated. Countries: 1. Publications: 0.
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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.