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Latest Inbreeding Stories

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2010-06-16 14:43:09

Inbred male sperm have been found to fertilize fewer eggs when in competition with non-inbred males according to a new study by the University of East Anglia. Research into the breeding habits of the red flour beetle, published June 15 in Proceedings of the Royal Society B, shows that the reduced fitness of inbred beetles, known as 'inbreeding depression', reveals itself in competitive scenarios. Inbreeding is a potentially important problem in declining species across the world, and...

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2010-05-03 11:31:00

New research suggests that Charles Darwin's family was a living human example of a theory that he developed about plants: that inbreeding could negatively affect the health and number of resulting offspring. Darwin was married to his first cousin, Emma Wedgwood. They had 10 children, but three died before age 10, two from infectious diseases. And three of the six surviving children with long-term marriages did not produce any offspring "“ a "suspicious" sign, researchers say, that these...

2010-04-06 07:16:03

Agronomists at Iowa State University are offering doubled haploid technology that allows corn breeders to more quickly produce inbred lines for research or private use. Thomas Lbberstedt, associate professor and K.J. Frey chair in agronomy and director of the R.F. Baker Center for Plant Breeding, has launched a Doubled Haploid Facility at ISU that can develop pure, inbred corn lines in less time than traditional methods. Inbred corn lines have two copies of the same genome. They are sometimes...

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2009-10-22 08:14:13

OK, it takes two for human reproduction, and now it seems that plants and animals that can rely on either a partner or go alone by self-fertilization give their offspring a better chance for longer lives when they opt for a mate. That's the conclusion gleaned from more than 100 mini-evolution experiments involving nematode worms (Caenorhabditis elegans) at the University of Oregon. Reporting online Oct. 21 in advance of regular publication in the journal Nature, the UO team found that going...

2009-07-02 10:13:47

Declining bumblebee populations are at greater risk of inbreeding, which can trigger a downward spiral of further decline. Researchers writing in the open access journal BMC Evolutionary Biology have provided the first proof that inbreeding reduces colony fitness under natural conditions by increasing the production of reproductively inefficient 'diploid' males.The sex of bumblebees is normally determined by the number of chromosome sets an individual receives. Males, born from unfertilised...

2009-06-30 09:09:22

Avoidance of inbreeding is evident amongst humans, and has been demonstrated in some shorebirds, mice and sand lizards. Researchers writing in the open access journal BMC Evolutionary Biology now report that it also occurs in a strictly monogamous species of bird, suggesting that the black-legged kittiwake possesses the ability to choose partners with a very different genetic profile.The study, led by Richard H. Wagner from the Konrad Lorenz Institute for Ethology of the Austrian Academy of...

2009-06-29 18:00:00

An Austrian-led study has found the black-legged kittiwake bird, a monogamous species, has the ability to choose partners with a different genetic profile. The researchers, led by Richard Wagner from the Konrad Lorenz Institute for Ethology of the Austrian Academy of Sciences, said avoidance of inbreeding is evident among humans, and has been demonstrated in some shorebirds, mice and sand lizards. Now the black-legged kittiwake has been added to that list. The scientists said they tracked 10...

2009-04-15 18:01:55

A genetic study suggests inbreeding led to the demise of Spain's powerful Hapsburg dynasty, Spanish scientists said. The Hapsburgs ruled a global empire from 1516 until the death of Spain's King Charles II in 1700. Gonzalo Alvarez of Spain's University of Santiago de Compostela said generations of intermarriage left the king unable to provide an heir, Britain's Daily Telegraph reported Wednesday. The study, published in the journal Public Library of Science, found that nine out of 11 Hapsburg...

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2009-04-15 10:13:22

The powerful Habsburg dynasty ruled Spain and its empire from 1516 to 1700 but when King Charles II died in 1700 without any children from his two marriages, the male line died out and the French Bourbon dynasty came to power in Spain. Reporting in the open-access, peer-reviewed journal PLoS ONE, April 15, Gonzalo Alvarez and colleagues at the University of Santiago de Compostela, Spain, provide genetic evidence to support the historical evidence that the high frequency of inbreeding (mating...

2009-04-07 13:59:26

Scientists say they've found extreme inbreeding of an isolated wolf population at a U.S. island national park has resulted in genetically deformed bones. Michigan Technological University researchers say they've collected the first scientific evidence that inbreeding caused the genetic deterioration of the bones of the wolves at Isle Royale National Park in northern Lake Superior. Rolf Peterson and John Vucetich of Michigan Tech and their colleagues -- Jannikke Raikkonen of the Swedish Museum...


Word of the Day
conjunto
  • A style of popular dance music originating along the border between Texas and Mexico, characterized by the use of accordion, drums, and 12-string bass guitar and traditionally based on polka, waltz, and bolero rhythms.
The word 'conjunto' comes through Spanish, from Latin coniūnctus, past participle of coniungere, to join together; see conjoin