The delicately mannered dance between discerning eggs and vying sperm is more complicated than scientists once believed, and it may hold secrets about the evolution of new species.
Plants & Animals
Nov 8, 2017
0
147
After mating for the first time, most females of an Australian jumping spider are unreceptive to courtship by other males, and this sexual inhibition is immediate and often lasts for the rest of their lives, according to ...
Plants & Animals
Oct 18, 2017
0
86
The size and swimming speed of sperm are controlled by a single supergene in birds, according to a new study by the University of Sheffield.
Evolution
Jul 18, 2017
0
70
In zebra finches, sperm velocity and morphology and hence reproductive success strongly depend on a specific mutation (an inversion) on one of the sex chromosomes, called Z. This was discovered by scientists of the Max Planck ...
Plants & Animals
Jul 17, 2017
0
135
New research involving Monash University biologists has debunked the view that males just pass on genetic material and not much else to their offspring. Instead, it found a father's diet can affect their son's ability ...
Plants & Animals
Feb 17, 2017
3
26
That males are naturally promiscuous while females are coy and choosy is a widely held belief. Even many scientists – including some biologists, psychologists and anthropologists – tout this notion when interviewed by ...
Other
Jan 20, 2017
2
70
The impact of climate change on global seawater conditions could change the rules of sperm competition for many important marine species, a pioneering new study has shown.
Ecology
Aug 17, 2016
0
12
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
2
19
Promiscuity could reduce benefits of successful mating, research shows.
Plants & Animals
Jan 19, 2016
0
24
Male fruit flies could find their chances of fathering offspring radically reduced if they are last in the queue to mate with promiscuous females before winter arrives, according to new University of Liverpool research.
Plants & Animals
Nov 24, 2015
0
8
