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Current Sperm News and Events, Sperm News Articles.
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Sugar promotes sperm longevity in pig reproductive tract
For many livestock species, artificial insemination (AI) is standard. But it can be tricky to achieve success the first time, thanks to variability in ovulation timing across the herd. (2020-09-17)
Paleontology -- The oldest known sperm cells
An international team of paleontologists has discovered giant sperm cells in a 100-million year-old female ostracod preserved in a sample of amber. (2020-09-16)
World's oldest animal sperm found in tiny crustaceans trapped in Myanmar amber
An international collaboration between researchers at Queen Mary University of London and the Chinese Academy of Science in Nanjing has led to the discovery of world's oldest animal sperm inside a tiny crustacean trapped in amber around 100 million years ago in Myanmar. (2020-09-16)
100-million-year-old amber reveals sexual intercourse of ostracods
Dr. WANG He and Prof. WANG Bo, from the Nanjing Institute of Geology and Palaeontology of the Chinese Academy of Sciences (NIGPAS), and their collaborators presented exceptionally well-preserved ostracods with soft parts (appendages and reproductive organs) from mid-Cretaceous Myanmar amber (~100 million years old), which revealed sexual intercourse of ostracods. (2020-09-15)
Gene-edited livestock 'surrogate sires' successfully made fertile
For the first time, scientists have created pigs, goats and cattle that can serve as viable 'surrogate sires,' male animals that produce sperm carrying only the genetic traits of donor animals. (2020-09-14)
The birth of a male sex chromosome in Atlantic herring
The evolution of sex chromosomes is of crucial importance in biology as it stabilises the mechanism underlying sex determination and usually results in an equal sex ratio. (2020-09-09)
UBC scientists find clues to queen bee failure
Scientists at UBC are unravelling the mysteries behind a persistent problem in commercial beekeeping that is one of the leading causes of colony mortality--queen bee failure. (2020-09-08)
Viruses play critical role in evolution and survival of the species
New research in Nature Structural & Molecular Biology shows viruses also play a key evolutionary role in mammals' ability to reproduce and survive, according to scientists in the Cincinnati Children's Perinatal Institute and at Azabu University in Japan. (2020-09-07)
In butterfly battle of sexes, males deploy 'chastity belts' but females fight back
Some male butterflies seal their mate's genitalia with a waxy 'chastity belt' to prevent future liaisons. (2020-09-03)
Study examines link between sperm quality and light from devices at night
Men might want to think twice before reaching for their smartphone at night. (2020-08-26)
Partner selection ultimately happens in the woman's reproductive tract
The female reproductive tract has the final say in human mate choice, according to new research from the University of Eastern Finland. (2020-08-19)
Surprising coral spawning features revealed
When stony corals have their renowned mass spawning events, in sync with the moon's cycle, colonies simultaneously release an underwater 'cloud' of sperm and eggs for fertilization. (2020-08-18)
Research captures how human sperm swim in 3D
Using state-of-the-art 3D microscopy and mathematics, Dr Hermes Gadêlha from the University of Bristol, Dr Gabriel Corkidi and Dr Alberto Darszon from the Universidad Nacional Autonoma de Mexico, have reconstructed the movement of the sperm tail in 3D with high-precision. (2020-08-13)
Why the 'wimpy' Y chromosome hasn't evolved out of existence
The Y chromosome has shrunken drastically over 200 million years of evolution. (2020-08-06)
Completing the set: 'Coupon-collection behavior' reduces sex-ratio variation among families
A new analysis of sibling records from more than 300,000 individuals suggests that some parents continue to reproduce until they have children of both sexes. (2020-08-06)
Monkeying around: Study finds older primates father far fewer babies
Older male rhesus monkeys sire fewer offspring, even though they appear to be mating as much as younger monkeys with similarly high social status. (2020-08-03)
How human sperm really swim: New research challenges centuries-old assumption
A breakthrough in fertility science by researchers from Bristol and Mexico has shattered the universally accepted view of how sperm 'swim'. (2020-07-31)
Underwater robots reveal daily habits of endangered whales
Research led by the University of East Anglia (UEA) has revealed the daily habits of the endangered Mediterranean sperm whale. (2020-07-29)
Overweight and obesity are associated with a low sperm quality
Researchers from the Rovira i Virgili University in collaboration with researchers from the University of Utah have carried out a systematic review and meta-analysis evaluating the association between adiposity (normal weight, overweight, obesity, and low weight) and the sperm quality. (2020-07-27)
Everything you ever wanted to know about leech sex but were afraid to ask
New research, published in Environmental Toxicology and Chemistry, sheds light on the effects the synthetic estrogens commonly found in birth control pills have on leeches. (2020-07-21)
Label-free imaging helps predict reproductive outcomes
Researchers at the University of Illinois at Urbana-Champaign have used a combination of label-free imaging and artificial intelligence to determine the potential fertility of sperm samples in cattle. (2020-07-20)
UNH scientists find faster way to count animal sperm using DNA
Researchers at the University of New Hampshire have identified a quicker and less expensive way to count sperm in lobsters that could help scientists looking at any animal better understand mating, a key aspect of species survival. (2020-07-17)
Healthy offspring from testicular tissue plantation in mice: Retinoic acid key
Germ cell depletion in recipient testis has adverse effects on spermatogenesis in orthotopically transplanted testis pieces via retinoic acid insufficiency. (2020-07-16)
New test offers clarity for couples struggling to conceive
A male fertility test based on Cornell research could help predict which men might need treatment and which couples might have success with different forms of assisted reproduction. (2020-07-16)
15-foot-long skeleton of extinct dolphin suggests parallel evolution among whales
A report in the journal Current Biology on July 9 offers a detailed description of the first nearly complete skeleton of an extinct large dolphin, discovered in what is now South Carolina. (2020-07-09)
No NELL2, no sperm motility; novel protein is essential for male fertility
An international team of researchers has identified a chain of events that matures the sperm and triggers their motility. (2020-07-09)
High-end microscopy refined
New details are known about an important cell structure: For the first time, two Würzburg research groups have been able to map the synaptonemal complex three-dimensionally with a resolution of 20 to 30 nanometres. (2020-07-01)
A novel sperm selection technology to increase success rates of in vitro fertilization
Motile sperm are difficult to collect with a conventional cell sorter because they are vulnerable to physical damage. (2020-07-01)
The rate we acquire genetic mutations could help predict lifespan, fertility
Differences in the rate that genetic mutations accumulate in healthy young adults could help predict remaining lifespan in both sexes and the remaining years of fertility in women, according to University of Utah Health scientists. (2020-06-19)
Researchers discover what's behind nature's perhaps largest erection -- which is not that big
In the plant kingdom, the sexual organ of a male pollen grain grows up to a thousand times its own length as it sniffs its way forth to a female egg cell to deliver its two sperm cells. (2020-06-15)
Study reveals birth defects caused by flame retardant
A new study from the University of Georgia has shown that exposure to a now-banned flame retardant can alter the genetic code in sperm, leading to major health defects in children of exposed parents. (2020-06-09)
Discovery of a novel gene involved in DNA damage repair and male fertility
A research group from the Institute of Molecular Embryology and Genetics (IMEG) at Kumamoto University, Japan has discovered that the gene C19ORF57 plays a critical role in meiosis. (2020-06-04)
New studies show how DNA crossovers can drive healthy, abnormal sperm, egg cell division
Human genetic diversity wouldn't be possible without DNA crossovers in egg and sperm cells. (2020-06-04)
Novel switch protein that 'turns on' sperm for fertilization
Researchers from Osaka University and Baylor College of Medicine discovered a signaling cascade in which the testicular protein NELL2 travels through the lumen to induce differentiation of the epididymis, secretion of the protease OVCH2, and subsequent sperm maturation. (2020-06-04)
Breaking up is hard to do (especially for sex chromosomes)
A team of scientists at the Sloan Kettering Institute has discovered how the X and Y chromosomes find one another, break, and recombine during meiosis even though they have little in common. (2020-05-28)
The genome of jojoba: The only plant to store wax in its seeds
Interest on Jojoba crop was, and still is, jojoba oil, which is not a glyceride fat, but a liquid wax with unique chemical configuration and features. (2020-05-20)
How do plants forget?
The study now published in Nature Cell Biology reveals more information on the capacity of plants, identified as 'epigenetic memory,' which allows recording important information to, for example, remember prolonged cold in the winter to ensure they flower at the right time during the spring. (2020-05-15)
How plants forget
New work published in Nature Cell Biology from an international team led by Dr. (2020-05-13)
Accurate 3D imaging of sperm cells moving at top speed could improve IVF treatments
Tel Aviv University (TAU) researchers have developed a safe and accurate 3D imaging method to identify sperm cells moving at a high speed. (2020-05-07)
How small chromosomes compete with big ones for a cell's attention
Scientists at the Sloan Kettering Institute have solved the puzzle of how small chromosomes ensure that they aren't skipped over during meiosis, the process that makes sperm and egg. (2020-05-06)
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