Articles tagged with Eggs
New investigation reveals surprising flexibility in finches' beak development, with different species sharing same developmental pathways yet producing unique shapes. This discovery offers new insight into the adaptability of birds to fill various ecological niches.
Researchers discovered that severely obese women have a higher incidence of eggs with multiple spindles and disorganized chromosomes, reducing fertilization chances. The study highlights an underlying egg problem in women with high body mass index, affecting IVF success rates.
Recent research reveals five new species of cuckoo bees from the Cape Verde Islands, demonstrating the region's rich biodiversity and evolutionary diversity. The discovery highlights a phenomenon known as 'island gigantism,' where isolated populations exhibit increased body size.
In a surprising discovery, male marine whelks carry the eggs of other males on their backs, with only one in four belonging to them. This unusual behavior provides insight into the complex family dynamics of these snails.
A new study funded by the NIH suggests that oral immunotherapy can help children with egg allergies overcome their condition. The trial found that 55% of participants who received daily egg white powder doses were able to pass an oral food challenge after 10 months, and 75% were able to do so after 22 months.
Researchers at UNC School of Medicine found that eating small amounts of egg every day for months lowered the threshold for allergic reactions in 75% of children with egg allergies. After two years on treatment, 28% were able to incorporate egg into their regular diets.
Researchers have discovered a fossil egg in Lleida, Spain, with an oval shape similar to that of chicken eggs. The Sankofa pyrenaica egg belongs to the same species and provides evidence for a connection between dinosaurs and modern birds.
A massive study of nearly 250,000 U.S. women found that live birth rates for fertility treatment can approach natural fertility rates with favorable patient and embryo characteristics. The study highlights the importance of factors such as age and embryo quality in determining success rates.
Researchers have identified a new method for picking the 'right' egg in IVF by analyzing genes expressed in cumulus cells surrounding the eggs. This non-invasive approach may help avoid abnormal eggs with incorrect chromosomal make-up, increasing the chances of successful IVF cycles.
Research published in PLOS ONE found that warmer, drier conditions associated with El Niño led to higher mortality rates for leatherback turtle eggs and hatchlings. Climate models project that these conditions will become more common, threatening the already endangered species.
Climate conditions at nesting beaches affect early survival of turtle eggs and hatchlings, with warmer El Niño conditions linked to higher mortality rates. The study predicts a 50% drop in egg and hatchling survival by 2112 due to global climate change.
A study found that male robins care for their young more when the eggs laid by their mate are brighter blue. The researchers replaced artificial eggs with baby robins in nests to test this theory, and results showed males feeding their babies twice as much when eggs were brightest blue.
Researchers discovered that embryo brains exhibit waking-like activity up to 20% into the final stage of embryonic life, followed by emergence of sleep patterns. This finding may have significant implications for understanding complex fetal learning and developmental consequences in premature infants.
Dinosaurs laid eggs, which limited their size and competitiveness compared to viviparous mammals. This led to a gap in body sizes, allowing smaller species to occupy niches, ultimately contributing to the dinosaurs' extinction.
A team of researchers has made a groundbreaking discovery in Patagonia, uncovering fossilized bones and unique eggs of an enigmatic birdlike dinosaur. The finding provides new insights into the evolution and diversity of basal alvarezsaurids, revealing that these creatures persisted in South America until Latest Cretaceous times.
Researchers aim to extract glycosaminoglycans from egg shells for biomedical applications, while also using egg shells as fillers in plastics. The project has the potential to reduce waste and costs for food manufacturers, creating new income streams.
A new study by A*STAR scientists reveals that the protein TRIM28 plays a crucial role in preserving epigenetic marks during nuclear reprogramming, ensuring proper development of the embryo. The absence of TRIM28 leads to severe developmental defects and multiple pregnancy failures.
A new study led by UC Riverside's Alexander Raikhel aims to control mosquito population through hormonal regulation. The researchers will focus on deciphering genes involved in mediating hormone action during egg production in Aedes aegypti mosquitoes, which spread dengue and yellow fever.
Scientists have discovered that coral offspring can break up into smaller, genetically identical individuals, called 'clones', which then settle and develop into adult corals. This unique reproductive strategy allows corals to maximize their chances of finding suitable habitats.
Researchers discovered that A. ervi lays two eggs in infected hosts and one egg in uninfected hosts, overcoming bacterial symbiont defenses through a compound secreted by developing wasps.
A study published in the American Journal of Perinatology found that women over 50 who undergo egg donation have similar rates of obstetrical complications as younger recipients. Despite concerns about increased risks, the research suggests thorough medical screening is essential for all pregnant women regardless of age.
A team of researchers has discovered a 190-million-year-old dinosaur nesting site in South Africa, revealing the oldest evidence of complex reproductive behavior in early dinosaurs. The site yielded multiple nests with eggs and embryos, as well as tiny footprints, suggesting that hatchlings remained at the site to double in size.
A 190-million-year-old dinosaur nesting site has been found in South Africa, providing significant insights into the evolution of reproductive behavior in early dinosaurs. The discovery includes clutches of eggs, embryos, and tiny footprints, shedding light on the complex behaviors of these ancient creatures.
A new technique developed by Cardiff University scientists may help predict which IVF embryos are most likely to result in a successful pregnancy. By analyzing the internal movements of eggs, they hope to improve IVF success rates and reduce the number of multiple births.
Scientists found that bubble-rafting snails, such as the common purple snail (Janthina janthina), evolved from sea-floor snails by modifying their egg masses to create buoyant rafts. This discovery suggests a new evolutionary pathway for these unique snails.
Researchers found that X chromosomes with fewer rDNA genes are more likely to be lost during male determination, leading to non-mendelian inheritance. This suggests a biased transmission of sex chromosomes in aphids.
Researchers at Brown University have developed a genetic biopsy technique to analyze the genes expressed by human eggs without harming them. By comparing the gene expression sequences in polar bodies and their host eggs, they found that more than 90% of detected genes were also present in the eggs.
Lack of compensation for human egg donors could stall recent breakthroughs in stem cell research due to difficulty in recruiting altruistic donors. A recent study on somatic cell nuclear transfer (SCNT) has created the first human stem cell line, but more donor eggs are needed to advance research.
A recent study published by the University of Exeter found that green turtle eggs laid on naturally hot beaches withstand high temperatures better than those from cooler beaches. This adaptation allows turtles to thrive in hot environments, making them crucial for species survival in a warming world.
Researchers at OHSU's ONPRC have developed a new contraceptive that directly targets the key enzymes responsible for releasing an egg from the ovary. This approach aims to prevent pregnancy while minimizing systemic effects and improving effectiveness compared to existing hormonal birth control methods.
Four species of wasps show remarkable adaptations in attacking ants, with two new species described. The study reveals how young wasps survive inside ant nests by exploiting dead ants outside the entrance.
Researchers at Stowers Institute for Medical Research discovered that oocytes rely on an intracellular flow to push the meiotic spindle into place, setting the stage for asymmetric cell division. This finding may lead to improvements in selecting promising oocytes for in-vitro fertilization.
Research found that embryos exposed to high levels of saturated fatty acids have fewer cells, altered gene expression, and impaired metabolic activity. This study suggests a link between maternal obesity and diabetes and reduced fertility, highlighting the importance of pre-pregnancy health for successful conception.
A new population model explains Atlantic herring population trends driven by haddock egg predation. The study suggests that when haddock populations are high, conservative fishing efforts can trigger severe declines in herring populations due to predation on eggs.
Researchers found that only 8-9% oil coverage on fertilized mallard duck eggs resulted in a 50% mortality rate. The weathering process made the crude oil less toxic to bird embryos, with no significant deformities or malformations reported.
Researchers at the University of Nevada School of Medicine discovered that caffeine inhibits the actions of pacemaker cells in Fallopian tube walls, reducing egg movement and potentially leading to infertility. This finding provides an explanation for why women with high caffeine consumption tend to take longer to conceive.
A new breed of chicken, Kuroiler, has been found to significantly outperform native chickens in terms of survival rate, egg production, and body weight gain. This hybrid chicken is well-suited for resource-poor village environments and requires minimal feed, making it an attractive option for rural farmers.
Researchers at Massachusetts General Hospital found that caloric restriction prevented age-related abnormalities in egg cells of female mice. The study suggests that dietary restrictions may improve egg quality and prevent fertility issues. Further research is needed to understand the mechanisms behind this effect.
The European IVF Monitoring Group reported on frozen oocyte retrieval (FOR) cycles for the first time. Italy led the way with 3,284 cycles, while Spain accounted for 30% of all egg donations. The report also highlighted the importance of restrictive laws on egg donation in many countries.
Researchers have discovered that cells surrounding the egg can provide information about its genetic and chromosomal status. The study found 14 genes with highly significant differences in activity when their corresponding egg was abnormal, suggesting a potential non-invasive test for identifying faulty eggs.
Purdue University scientist Kevin Keener's research suggests that rapidly cooling eggs can increase the activity of lysozyme, an enzyme that defends egg whites from bacteria. By re-saturating egg whites with carbon dioxide and altering pH levels, the technology aims to create a safer food product.
Research found that caffeine inhibits specialized pacemaker cells in the Fallopian tubes, which coordinate muscle contractions and egg movement. This discovery provides a possible explanation for why women with high caffeine consumption take longer to conceive.
Researchers at the Smithsonian Institution have found that whale sharks can be gregarious and gather in large numbers to feed on dense patches of fish eggs. The team's DNA barcoding analysis revealed a previously unknown spawning ground for little tunny, a member of the mackerel family.
A study analyzing over 400,000 IVF cycles in the UK found that aiming for 15 eggs retrieved per cycle maximizes live birth rates while minimizing ovarian hyperstimulation syndrome risk. The number of eggs above 20 leads to a decline in live birth rates.
Researchers at NIST created nanomagnets with egg-like shapes to study their effects on magnetic properties. The shape distortions led to complex wave patterns and frequency shifts, which can be harnessed for developing more reliable random-access memories (RAM) that reduce processor power needs.
Researchers have detected emerging pollutants, including 'dechlorane plus', in peregrine falcon eggs from Spain and Canada. The presence of these chemicals has been found to be higher in Canadian samples than Spanish ones.
A UC Riverside entomology team proposes a pesticide-free method to increase egg production by targeting a damaging parasite. The strategy involves introducing a natural parasite that competes with and eliminates the more difficult-to-manage fowl mite, reducing egg losses by up to five percent.
A new study has found that a procedure used in preconception diagnosis to analyze mutant mitochondrial DNA in supporting cells may not accurately predict egg safety for pregnancy. The research highlights the limitations of using polar bodies as a proxy for eggs prior to in vitro fertilization.
Researchers found that flying female fireflies receive nuptial gifts from their mates, whereas wingless females do not. This suggests that flightless females prioritize reproduction over male contributions.
A new study in Current Biology found that male squid become aggressively after contacting a chemical on female eggs, revealing the first detailed evidence of an aggression-inducing pheromone in any aquatic animal. This discovery challenges previous theories on aggression and highlights the complex communication system of squid.
Antennal drumming behavior has been linked to development of social caste in a native paper wasp, Polistes fuscatus. The new work shows that exposure to simulated antennal drumming biases developing larvae toward the physiological characteristics of workers rather than gynes.
Researchers found lower MIF mercury isotopes in eggs from northernmost nesting areas with year-round sea ice, while those from southern Alaska without ice reflected greater mass-independent fractionation effects. The study aims to investigate the relationship between ice cover and mercury distribution in the environment.
A recent study published in Oikos found that female birds' fertility declines less quickly when they mate with healthier, more experienced males who became first-time fathers at a younger age. This suggests that male partners play a role in how fast females pass their prime.
A new study found that female birds' fertility declines less quickly if they choose mates who became first-time fathers at a young age. This suggests that the 'history' of a male's reproductive past plays a role in his ability to care for his partner and offspring.
Research reveals parallels between immunity and cancer, with acute inflammation compared to chronic inflammation in mammals. The immune system that counters parasitoid wasp infections is highly restrained, but goes haywire when regulating mechanism fails, leading to cancer development.
The ASCB's annual film and image contest, Celldance, recognizes 10 members for their visually engaging and scientifically important videos and images. The winning videos and images will be shown on Saturday, Dec. 11, at the ASCB's 50th annual meeting in Philadelphia.
A team of UC Riverside entomologists has identified a microRNA molecule that disrupts the Aedes aegypti mosquito's ability to transmit dengue and yellow fever viruses. The discovery could help control the spread of vector-borne diseases by reducing the mosquito population.
Researchers found that polar bears can thrive even if they raid geese nests, thanks to a mismatch in timing that allows geese to lay eggs earlier than bears arrive on shore. This means the geese population is unlikely to go extinct despite bear predation.
A fungal infection caused by Fusarium solani has been found to be a major contributor to the decline of Atlantic sea turtles. The fungus can infect turtle eggs, causing high hatching failure rates and driving population numbers down.
Scientists at Brown University and Women & Infants Hospital have made a groundbreaking discovery that could revolutionize the field of fertility treatments. They found a way to analyze the genetic material in discarded polar bodies from human egg cells, which may reveal insights into their ability to develop healthy embryos.