Quality sperm, good genes, and courtship knowledge are just a few reasons why females might benefit from mating with older males.
Plants & Animals
Jan 25, 2018
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225
Gene-editing techniques could help to improve stocks of farmed pigs by boosting supplies of sperm from prized sires.
Biotechnology
Jan 13, 2017
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19
Scientists can interfere with sperm production in the parasitic blood fluke Schistosoma mansoni by blocking expression of the Nuclear Factor Y-B gene (NF-YB). The new study by Harini Iyer and Phillip A. Newmark of the Howard ...
Biotechnology
Jun 15, 2016
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7
In the animal kingdom, sperm usually are considerably smaller than eggs, which means that males can produce far more of them. Large numbers of tiny sperm can increase the probability of successful fertilization, especially ...
Plants & Animals
May 25, 2016
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19
A single shot into the muscle is enough to stop egg and sperm production in mice, report California Institute of Technology scientists on October 5 in Current Biology. The injection delivers packaged DNA into muscle cells, ...
Plants & Animals
Oct 5, 2015
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46
Malaria is a deadly disease transmitted by the bite of an infected mosquito. Curiously, only female mosquitoes bite – male mosquitoes only feed on sugar, not on blood. That is because male mosquitoes do not need an extra ...
Cell & Microbiology
Sep 23, 2015
4
59
Males with low sperm quality probably won't get much help from dining down on fish oil supplements and a bag of carrots, recent aquatic-based research suggests.
Plants & Animals
Jun 25, 2015
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23
(Phys.org)—Many intuitions drawn from our machine world do not smoothly extended to the biological. Whereas the screws or other fasteners used in an automobile typically tend to loosen over time with use, the hardware found ...
Continually producing sperm over a long time is important to procreate the next generation. Researchers of the National Institute for Basic Biology, National Institutes of Natural Sciences in Japan, Ms. Kanako Ikami and Prof. ...
Cell & Microbiology
May 1, 2015
0
15
An animal biologist says poor nutrition results in genetic damage to sperm cells and lower sperm motility for rams.
Plants & Animals
Aug 20, 2014
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