Quantcast

Latest Hermaphrodite Stories

2013-11-29 14:35:53

Researchers at the Stanford University School of Medicine have discovered that males of the laboratory roundworm secrete signaling molecules that significantly shorten the lifespan of the opposite sex. The scientists speculate that, if carried out after reproduction, this "male-induced demise" could serve to conserve precious resources for a male's offspring or to decrease the supply of mates for other males. For several years, it's been known that the presence of some male worms and...

Fitness Benefits For Female Sea Slugs May Come From Traumatic Mating
2012-08-23 11:09:36

redOrbit Staff & Wire Reports - Your Universe Online A report published Aug. 22 in the open access journal PLOS ONE states that, despite the nature of their mating being very traumatic and biologically costly, the female sea slug will mate more often than required to in order to reproduce. The mating behavior of a simultaneously hermaphroditic species of sea slug was examined by Rolanda Lange of the University of Tuebingen in Germany, who led the study, along with colleagues. This...

2009-09-11 15:28:38

The world athletics governing body is reported seeking a way to deal with runner Caster Semenya, who allegedly has both male and female sexual organs. Semenya is an 18-year-old South African athlete, a woman with a muscular build, who blew away the field in winning the women's 800-meters gold medal at the World Athletics Championships in Berlin last month. But, rumors were buzzing before that. The Sydney Morning Herald in Australia and The Sun newspaper in Britain reported that gender tests...

2009-06-25 09:41:21

Researchers studying the nervous control of nematode mating behavior have produced video footage of a male worm preparing to mate with a hermaphrodite. Writing in the open access journal BMC Biology, Allyson Whittaker and Paul Sternberg from the California Institute of Technology investigated the role of the excitatory neurotransmitter acetylcholine in regulating tail muscles to achieve an exploratory embrace.The video shows an intimate moment between two nematodes of the species...

2009-02-03 10:57:25

Most animals, like humans, have separate sexes "” they are born, live out their lives and reproduce as one sex or the other. However, some animals live as one sex in part of their lifetime and then switch to the other sex, a phenomenon called sequential hermaphroditism. What remains a puzzle, according to Yale scientists, is why the phenomenon is so rare, since their analysis shows the biological "costs" of changing sexes rarely outweigh the advantages.A report by Yale scientists in the...

2007-10-17 06:00:08

By Womack, Kenneth Mallory-Kani, Amy As parables of human nature, The Virgin Suicides and Middlesex act as a duet of adaptationist behaviour in which Detroit-arguably one of the hubs of the American Dream-operates as the fulcrum and the events of August 1974-the apex of the Watergate crisis-function as the lever. Life isn't meant to be easy. It's hard to take being on the top-or on the bottom. I guess I'm something of a fatalist. You have to have a sense of history, I think, to survive some...

2005-10-10 14:52:27

By directly manipulating mating performance in a tropical sea slug, Chelidonura hirundinina, researchers of the University of Tbingen have now shed light on the bizarre reproductive conflicts encountered by hermaphroditic animals. In some hermaphroditic species, such as C. hirundinina, mating partners may insist on copulating as a "male," "female," or both, resulting in unique biological conflicts over gender. Sexual interactions in so-called cross-fertilizing simultaneous hermaphrodites,...


Word of the Day
toccata
  • In music, a work for a keyboard-instrument, like the pianoforte or organ, originally intended to utilize and display varieties of touch: but the term has been extended so as to include many irregular works, similar to the prelude, the fantasia, and the improvisation.
This word is Italian in origin, coming from the feminine past participle of 'toccare,' to touch.
Related