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Latest Speciation Stories

2014-07-15 09:59:46

University of Oxford Early maize farmers selected for genes that improved the harvesting of sunlight, a new detailed study of how plants use 'doubles' of their genomes reveals. The findings could help current efforts to improve existing crop varieties. Oxford University researchers captured a 'genetic snapshot' of maize as it existed 10 million years ago when the plant made a double of its genome – a 'whole genome duplication' event. They then traced how maize evolved to use these...

Researchers Remap The Epic Evolution Of A 'Ring Species'
2014-05-26 03:58:52

University of British Columbia The Greenish Warbler, long considered an idealized example of a single species that diverged into two as it expanded its range, has a much more checkered family history than biologists previously realized. Ring species are a continuous loop of related populations, each adapted to its local environment, with two terminal populations in the loop meeting but now unable to mate. But an in-depth genomic analysis published today in Nature by University of...

Geneticists Map Genome Of An Important Global Crop: The Peanut
2014-04-03 07:29:48

April Flowers for redOrbit.com - Your Universe Online Peanuts are seemingly everywhere in the US. From cooking oils to candy bars, peanuts are a part of our lives, and a big business. And now, for the first time, a multinational group of crop geneticists has sequenced the peanut genome. The researchers are from the International Peanut Genome Initiative (IPGI), led by Scott Jackson, who serves as chair of the IPGI. Jackson is also the director of the University of Georgia Center for...

Scientists Identify Factors Limiting Hybridization Of Closely-related Woodrat Species
2014-03-31 08:41:24

Wildlife Conservation Society A pair of new studies from the Wildlife Conservation Society, Idaho State University, and the University of Nevada Reno look at the surprising variety of factors that prevent two closely related species of woodrats from becoming a single hybrid species despite the existence of hybrid individuals where the two species come into contact. After finding that two closely related species, the desert and Bryant's woodrats, could interbreed and produce hybrid...

2014-01-29 11:17:50

Ever since the nineteenth century scientists have recognized that some regions contain more species than others, and that the tropics are richer in biodiversity than temperate regions. But why are there more species in the tropics? A new study publishing 28 January in the Open Access journal PLOS Biology scrutinizes most of the living mammalian species and reveals a two-fold mechanism; the rate at which mammals arose was higher in the tropics, and the rate at which they became extinct lower....

Clymene Dolphin Natural Hybridization
2014-01-09 12:44:22

Lee Rannals for redOrbit.com - Your Universe Online Natural hybridization between two dolphin species likely helped to bring about the mysterious clymene dolphin, according to a study published in the open-access journal PLOS ONE. Researchers from several institutions found in a molecular analysis that spinner dolphins and striped dolphins helped create the clymene dolphin. Questions about the clymene dolphin’s origins have been unanswered for many years, so the team from the...

Butterflies Offer Insights Into Evolution
2013-10-31 16:39:31

Michael Harper for redOrbit.com - Your Universe Online A new study from the University of Chicago finds it’s genetically easier to spin off into a new species than it may have once been thought, even if the two species remain close and interbreed with one another. After studying butterflies, the researchers found evolution can happen as the result of a process rather than a single event. In fact, in the case of butterflies, the beginning of a new species could begin with something as...

Kiwi Genome Reveals A Few Surprises
2013-10-27 05:36:19

redOrbit Staff & Wire Reports - Your Universe Online Scientists working to sequence the genome of the kiwifruit have revealed that the berry has recently undergone a pair of whole-genome duplication events, according to new research published earlier this month in the journal Nature Communications. Zhangjun Fei, an associate professor at the Boyce Thompson Institute at Cornell University, and his colleagues also discovered that there were many similarities between the kiwi’s more...

Speciation Theory Questioned
2013-09-03 14:24:14

Brett Smith for redOrbit.com - Your Universe Online While scientists have catalogued millions and millions of species, there is still no agreement on how exactly new species form. However, a new study published this week in Proceedings of the National Academy of Sciences could deal a major blow to one prevailing theory - namely, that new species arise when a barrier prevents reproduction between populations. Species-creating barriers could be physical, such as a mountain range, or they...

Fossil And Molecular Evidence Important For Studying Evolution
2013-08-10 05:19:24

redOrbit Staff & Wire Reports - Your Universe Online The fossils of microscopic aquatic creatures, whose shells resemble grains of sand to the naked eye, could help shed new light on the process of evolution, according to new research published Friday in the journal Methods in Ecology & Evolution. As part of their research, University of Southampton evolutionary ecologist Dr. Thomas Ezard and his colleagues are analyzing the remains of the one-millimeter large planktonic...


Latest Speciation Reference Libraries

39_b28590aeccf7d5e65ad920a431957a2b
2007-06-24 20:15:53

The Three-Spined Stickleback, Gasterosteus aculeatus, is a fish native to much of northern Europe, northern Asia and North America. It has been introduced into parts of southern and central Europe. Three subspecies that are currently recognized by the IUCN are Gasterosteus aculeatus aculeatus, which is found in most of the species range, and is the subspecies most strictly termed the Three-Spined Stickleback; its common name in England is the Tiddler, although "tittlebat" is also sometimes...

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Word of the Day
baudekin
  • A rich embroidered or brocaded silk fabric woven originally with a warp of gold thread.
'Baudekin' seems to be an alternative form of 'baldachin,' from the Italian 'Baldacco,' Baghdad, the city where the material was made.
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