Advertisement
YOU ARE HERE: LAT HomeCollectionsReproduction
IN THE NEWS

Reproduction

SCIENCE
May 26, 2007 | From Times Staff and Wire Reports
Female sharks can fertilize their own eggs and give birth without sperm from males, according to a study published Wednesday in the British journal Biology Letters. The joint Northern Ireland-U.S. research analyzed the DNA of a shark born in 2001 at the Henry Doorly Zoo in Omaha. Analysis of the baby shark's DNA found no trace of any chromosomal contribution from a male. Shark experts said this was the first confirmed case in a shark of parthenogenesis, or "virgin birth."
Advertisement
CALIFORNIA | LOCAL
September 9, 1992 | ROBERT STEINBROOK, TIMES MEDICAL WRITER
A sophisticated reproductive technique that has enabled some menopausal women to bear children appears to work as well in women over 40 as in younger women, according to a new report by USC researchers. The study of 100 patients suggests that the technique, which involves the use of eggs from younger women, can in some instances reverse the normal age-related decline in human fertility. The underlying problem may be the age of the egg, not the age of the other reproductive organs.
CALIFORNIA | LOCAL
April 1, 1991 | From Times Staff and Wire Reports
A new clue to how mammalian eggs attract sperm may lead to new treatments for infertility. Follicle cells in the reproductive tract, and presumably the eggs themselves, emit a chemical that causes sperm to migrate toward the egg, researchers from the Weizmann Institute of Science in Rehovot, Israel, report in today's edition of the Proceedings of the National Academy of Sciences.
NEWS
October 2, 1994 | MARLA CONE, TIMES ENVIRONMENTAL WRITER
In the gender-bending waters of Lake Apopka, alligators aren't quite male. They aren't quite female either. They may be both. Or neither. This sexual confusion in the wild, discovered in this steamy Florida swamp last year, is so disturbing to scientists that they keep performing test after test on the scaly reptiles, trying to prove themselves wrong. But the more they look, the more evidence they find.
SCIENCE
March 10, 2007 | From Times Wire Reports
A study of spiders' copulation techniques found that males leave part of their sex organ inside females as a sort of "chastity belt" to deter rivals. "Males can reduce sperm competition and thereby increase their paternity success," Bonn University researchers wrote in the journal Behavioral Ecology. A male only has only seconds to have sex before the larger female kills him. In more than 80% of cases, the tip of the male's genital organ breaks off inside the female.
CALIFORNIA | LOCAL
March 15, 2006 | J. Michael Kennedy, Times Staff Writer
In the final analysis, the federal watchdogs had to make a no-win choice about the bald eagles of Santa Catalina Island. The birds' eggs were still cracking because of the ravages of DDT. The chances of reproducing on their own, at least in the foreseeable future, seemed dubious at best.
NEWS
September 22, 1989 | LEE MAY, Times Staff Writer
In a decision that could have far-reaching ethical, medical and legal implications, a Tennessee judge Thursday awarded custody of seven frozen embryos to a wife embroiled in a divorce case, ruling that "human life begins at conception." Circuit Court Judge W. Dale Young ruled the fertilized eggs should go to Mary Sue Davis, who wants to implant them and carry them to term--against the wishes of her estranged husband, Junior Lewis Davis. At a news conference in Titusville, Fla.
CALIFORNIA | LOCAL
March 27, 1999
In the first known birth of its kind, a woman has had a baby using sperm retrieved from her dead husband, raising ethical questions over whether a man must give his consent to be a father. The sperm was retrieved 30 hours after the man's death and then frozen for 15 months before use. His wife, Gaby Vernoff, became pregnant in July 1998 and delivered the girl March 17 at a Los Angeles hospital.
CALIFORNIA | LOCAL
March 4, 1999 | JULIE HA, TIMES STAFF WRITER
A whodunit is quickly turning into a soap opera at the Los Angeles Zoo, where two more pregnant chimps have some explaining to do. First, Yoshiko, who had been seen with male chimp Jerrard, gave birth to a baby in January. Zookeepers hadn't even known she was pregnant. And all three male chimps of breeding age, including Jerrard, had had vasectomies.
NEWS
September 6, 2001 | GREG KRIKORIAN, TIMES STAFF WRITER
Male prisoners have a constitutional right to procreate by means of artificial insemination, the U.S. 9th Circuit Court of Appeals ruled Wednesday. The 2-1 decision, the first of its kind by a federal appellate court, comes in the case of William Reno Gerber, a 41-year-old third-strike convict now serving a 111-year sentence for negligently discharging a firearm, making terrorist threats and possessing a handgun as an ex-felon.
Los Angeles Times Articles
|