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.
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.
Plants & Animals
Sep 17, 2020
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5
Achieving pregnancy has been shown to be more likely between partners who carry dissimilar human leucocyte antigen (HLA) immune genes. Accordingly, humans are expected to choose HLA dissimilar reproductive partners. Earlier ...
Evolution
Aug 19, 2020
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124
A simple, reversible chemical treatment can segregate X-bearing sperm from Y-bearing sperm, allowing dramatic alteration of the normal 50/50 male/female offspring ratio, according to a new study by Masayuki Shimada and colleagues ...
Cell & Microbiology
Aug 13, 2019
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206
Steven Finkel tells the story of a close family member who had a discomforting health issue—the kind you don't discuss at the dinner table.
Ecology
Jul 29, 2019
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247
During the mating season, male damselflies battle fiercely for control of prime territories containing resources—typically patches of floating leaves used for egg deposition in wetlands—that are key to attracting females. ...
Plants & Animals
Jul 8, 2019
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9
Sperm start their sprint to the ovum when they detect changes in the environment through a series of calcium channels arranged like racing stripes on their tails. A team of Yale researchers has identified a key molecule that ...
Molecular & Computational biology
May 3, 2019
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101
Researchers have discovered what gives human sperm the strength to succeed in the race to fertilise the egg.
Mathematics
Mar 19, 2019
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595
A trio of researchers with Cornell University and Weill Cornell Medicine has found evidence that the female reproductive tract may have evolved to favor faster-swimming sperm. In their paper published in the journal Science ...
We all know that individuals fight over potential love interests. Just think of Daniel Cleaver (Hugh Grant) and Mark Darcy (Colin Firth) scuffling – rather impotently – over Bridget Jones in a fountain. But you might ...
Plants & Animals
Feb 15, 2018
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39
Despite herculean efforts, cancer remains a formidable disease, with each malignant subtype responding differently to therapeutics. One hurdle specific to treating solid tumors is a protective layer called an extracellular ...
Materials Science
Jan 10, 2018
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15