Articles tagged with Eggs
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.
Researchers have identified key genes controlling reproductive lifespan in roundworms, which may lead to the development of fertility-preserving treatments for women. The study's findings suggest that quality over quantity is a limiting factor in human reproduction, and that similar genes are shared between humans and worms.
A new study from the University of Minnesota found that genetically modified Bt corn reduces pest losses in both transgenic and non-transgenic corn. The study found that areawide suppression of European corn borer populations resulted in estimated annual losses of $1 billion, but also benefited non-Bt corn by 28-73% in neighboring states.
Researchers found that weakened chromosome cohesion is the primary cause of age-related aneuploidy, leading to chromosomal abnormalities like Down syndrome. The study used naturally aging mouse models to demonstrate this finding.
Research from Northwestern University found that healthy eggs require high levels of zinc to mature and be fertilized. The study may lead to advances in fertility treatment by enabling doctors to assess the best eggs for successful embryo formation.
An ARS study found that there is no substantial quality difference between organically and conventionally produced eggs, contrary to common claims on cartons. The study also revealed differences in size and composition among various types of eggs, but these did not affect overall quality.
A new preimplantation genetic screening method using micro-array technology has been shown to accurately detect chromosomal abnormalities in 89% of cases. This improvement in detection rate is expected to increase the success rates of IVF treatments for women of advanced maternal age.
A review of studies on IVM fertility treatment suggests that babies born after IVM may be more likely to have larger offspring syndrome and experience difficult births requiring caesareans. The authors urge caution in the use of IVM until further studies can clarify their findings.
Two studies found that younger women prioritize career success over motherhood, while older women seek egg freezing as a means to delay childbearing until finding the right partner. Egg freezing has become more accessible, but accurate information is still lacking, highlighting the need for targeted counselling and support.
A new study found that free-range eggs in Taiwan contain at least five times higher levels of certain pollutants than regular eggs. The findings raise concern about the safety of eating free-range chicken eggs due to potential exposure to environmental pollutants like PCDDs and PCDFs.
The high-quality draft sequence of Xenopus tropicalis's genome will aid researchers studying embryo development and cell biology in both species. The genome contains genes similar to those associated with over 1,700 human diseases.
Researchers discovered that birds use complex patterns and color to detect foreign eggs, but surprisingly, they don't rely on the unique scribbles found only on host eggs. This finding offers insights into a 20 million-year-old evolutionary arms race between cuckoo parasites and their hosts.
Young women with breast cancer are concerned about their fertility, with treatments like chemotherapy and hormonal therapy affecting egg production. Fertility preservation options, such as egg freezing or ovarian tissue transplantation, can help alleviate these concerns.
Researchers found that birds leave messages in the egg that influence the development of their chicks' begging behavior. The messages can affect the chick's weight gain and survival after hatching.
A nearly complete fossilized skeleton of a primitive snake coiled inside a dinosaur nest was discovered in India, showing that ancient snakes ate dinosaur hatchlings. The study suggests that the ecosystem of predators during the hatching season supported hundreds or thousands of defenseless baby sauropods.
A newly discovered fossil snake from India, named Sanajeh indicus, was found coiled around a crushed dinosaur egg next to a freshly hatched sauropod. The arrangement of the bones and delicate structures suggests that the snake ingested the half-meter-long hatchling due to its large size.
A nearly complete fossilized snake from India, Sanajeh indicus, has been discovered coiled around a sauropod dinosaur egg and a freshly hatched hatchling. The find provides critical information about the early diversification of snakes and how they evolved to eat large prey.
A new study published in the FASEB Journal shows that choline plays a critical role in fetal brain development, particularly in regions associated with memory. Choline is found in meats like bacon and eggs.
Researchers found that coots can recognize their own chicks and reject impostor chicks, a remarkable cognitive ability that helps them defend against parasitic chicks. This skill is essential for the survival of coot offspring, as parents learn to identify their own chicks through the first-hatched chicks.
Christine Bergeron, a Virginia Tech doctoral student, receives an EPA fellowship to study the impact of mercury on American toads' reproductive success. The research reveals that female toads transfer mercury to their eggs, affecting offspring viability and potentially long-term population health.
A Virginia Commonwealth University study identified a key gene regulating ovarian follicle development in mice, which may help understand human fertility issues. Female mice lacking the Smad-3 gene showed reduced ability to respond to FSH stimulation, leading to infertility.
Female reptiles lay eggs in communal nests, defying their solitary nature. The behavior is common among 255 lizard species and many snake and alligator species, with potential advantages including reduced nesting costs.
Researchers have made significant breakthroughs in preserving fertility among cancer patients, including the development of lab-grown eggs and a new understanding of cellular mechanisms that can help restore fertility. These advancements offer hope for young cancer patients who are struggling to preserve their reproductive options.
Researchers from Northwestern University have successfully grown a woman's immature egg cells, contained in a tiny sac called a follicle, to a healthy and nearly mature egg in the laboratory. This breakthrough could provide a new fertility option for women whose cancer treatments destroy their ability to reproduce.
A recent study found that women with diminished ovarian reserve are at increased risk of trisomic pregnancy, regardless of age. The study analyzed data from 19,840 women undergoing fertility treatment in the Netherlands and found a history of ovarian surgery, low egg retrieval, or menopausal status to significantly increase trisomy risk.
A new genetic test has increased pregnancy rates for older women undergoing IVF by 20% compared to 10% without the test. The test examines chromosomes in human eggs after fertilization and identifies healthy embryos, reducing chromosomal abnormalities and congenital issues.
Researchers at Baylor College of Medicine found that extracellular signal-regulated kinases (ERK1 and ERK2) are essential for ovulation, oocyte maturation, and other key activities in ovarian function. Disrupting the activity of both enzymes was necessary to block fertility in female mammals.
The study reveals that ERK1 and ERK2 proteins trigger a chain of chemical sequences that bring about the release of the egg, transformation of granulosa cells into luteal cells, and production of progesterone. The finding has implications for treating infertility and developing new means to prevent pregnancy.
Researchers found a surprising tendency for Northern shrimp eggs to hatch and larvae to appear near spring phytoplankton blooms, which are triggered by temperature and sunlight. This timing is strongly dependent on local bottom water temperatures, suggesting that the species has evolved to maximize larval survival.
Researchers developed a mathematical model predicting optimal time for loading and unloading cryoprotectants, which reduces egg size shifts and improves fertilization chances. Using sugars like trehalose, these staged drugs can help preserve eggs at subzero temperatures, enabling easier transportation and potential transplantation.
Research from Experimental Biology 2009 found that eating eggs for breakfast can reduce hunger, daily caloric intake, and BMI in adults. Additionally, protein-rich breakfasts can help teens control appetite and reduce post-meal hunger.
A new study by Stanford researchers has developed a method to assess the quality of women's eggs, which could enhance IVF success rates. The non-invasive test uses metabolomic profiling to identify unique biomarkers in the eggs that predict embryo viability and pregnancy rates.
A study led by UCF scientist Wade Winterhalter uses cricket reproduction patterns to predict the impact of global warming on humans. The research combines global warming models with biological predictions, simulating daily and seasonal temperature changes in crickets over a six-degree Celsius increase.
A new study published in The Endocrine Society's Journal of Clinical Endocrinology & Metabolism found that obese women have detrimental changes in their ovaries, leading to poorer reproductive outcomes. Alterations in egg development and increased inflammation may contribute to infertility, the researchers suggest.
A study published in Science shows that when the apple maggot shifted hosts from hawthorn to European apples, it triggered a cascade of evolutionary changes in a parasitic wasp. The research reveals the process of speciation in action and sheds light on biodiversity's role in creating new species.
A large body of science supports the beneficial role eggs play in a healthful diet. However, an association between egg intake and increased incidence of type 2 diabetes was found in a recent study, raising questions about lifestyle factors that may have influenced the results.
Researchers found that reed warblers employ a defense-in-depth strategy by mobbing model cuckoos at high-risk nests, reducing parasitism rates. Mobbing is adaptive in contexts where brood parasitism varies spatially and temporally.
A study by Texas A&M University researcher Jason Moore suggests that male dinosaurs may have cared for and watched over eggs, similar to female birds. The findings are based on the examination of six well-preserved dinosaur egg nests, which indicate that males likely played a key role in incubating the eggs.
A study by University of Washington researchers found that two-thirds of women who donated eggs reported satisfaction with the process, but 16% experienced physical symptoms and 20% had lasting psychological effects. Women's motivations for donation varied, with some citing altruism and others financial concerns.
New research shows that polar bears can adapt to a changing Arctic by consuming snow goose eggs, which are rich in nutrients. As the Arctic warms, the timing of sea-ice breakup and snow goose nesting is shifting, providing an alternative source of food for subadult males.
Researchers at Montreal Neurological Institute identify a genetic bottleneck that determines the proportion of mutated mtDNA transmitted from mother to child. This understanding can inform genetic counselling and treatment, offering hope for preventing debilitating diseases like maternally inherited blindness.
A global study of 5,290 bird species found that environmental variation causes birds to lay larger clutches. The study, published in PLOS Biology, also revealed that species living in seasonal environments tend to have larger clutches than those in tropical regions.
The AAAS/Subaru SB&F Prize for Excellence in Science Books promotes science literacy among young readers. The prize recognizes 19 finalists in four categories, including children's picture books, middle grades science books, young adult science books, and hands-on activity books. Winners will receive $1,500 and a plaque.
Researchers at Rutgers University–Camden have identified a complex coding language that allows cells to organize and communicate, enabling the formation of intricate patterns in fruit fly eggs. This breakthrough understanding of genetic patterning has implications for our knowledge of developmental biology and diseases like cancer.
Researchers discovered a Seychelles fly species that lays larvae instead of eggs, potentially revealing an evolutionary step to live birth. The study found that these flies' eggs hatch quickly and develop advanced structures, suggesting a unique reproductive strategy.
Researchers discovered that frog embryos at an early developmental stage actively respond to oxygen levels in the egg. By positioning their external gills in a small high-oxygen area, they maintain high metabolic rates and rapid development. This behavior is crucial for their long-term survival.
Stanford researchers found a catastrophic decrease in frog and salamander populations in Yellowstone's ponds due to high temperatures and drought. The amphibians need ponds for their young to hatch, but drying water kills eggs that are unsuitable for gestation on land.
Researchers at Purdue University have developed a technology that uses live fish embryos to detect harmful chemicals in water, providing an early warning system for environmental contamination. The tool measures oxygen use in developing fish, revealing minute levels of toxic substances before they cause harm.
Researchers found that egg P bodies lack degradation proteins Pat1 and DCAP-2 to safeguard maternally-derived gene messages until fertilization. The specialized P bodies interact with each other, suggesting they exchange mRNAs.
The Leptotyphlops carlae is the world's smallest known snake species, with adults measuring just under four inches in length. This tiny threadsnake was discovered by Blair Hedges in a forest fragment on Barbados and is believed to be rare due to habitat destruction.
A new species of Bagworm Moth with predatory larvae has been discovered in Panama's tropical forest. The larvae construct portable structures called 'bags' to capture prey, including spiders and insects.
A team of scientists found that blackcap birds can distinguish between genuine and fake cuckoo eggs by altering the UV reflectivity. The study, published in The Journal of Experimental Biology, shows that when blackcap eggs are coated with a UV blocker or Vaseline, they are rejected by the parents.
A newly discovered life history among tetrapods reveals a Malagasy chameleon spends most of its life in an egg, hatching after just 4-5 months. This rapid growth rate is unlike any other known four-legged animal.
A new species of neotropical treefrog has been discovered that can reproduce both aquatic and terrestrial ways. Researchers found that this frog makes a behavioral decision to lay egg masses aquatically in a pond or terrestrially on overhanging plants, allowing it to avoid predators and extreme temperatures.
Researchers found that males hatch faster than females when isolated, but are disadvantaged in social environments, leading to poorer hatching conditions. Females have an upper hand in responding to environmental challenges during embryonic development.
A research team led by Mark Hoddle has successfully used biological control to eradicate the glassy-winged sharpshooter, a major agricultural pest, from Tahiti and neighboring islands. The team introduced a microscopic parasitic wasp that attacks the insect's eggs, reducing its population to less than 5% of its original density.
A study of Lincoln's sparrows reveals that first-laid eggs are less likely to hatch, while older siblings have an advantage in terms of resources and competition. This finding challenges the common assumption that younger chicks are more vulnerable due to size disparities with their peers.