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Latest Speciation Stories

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...

Paternal Cues Heavily Influence Mate Choice In Mice
2013-03-28 16:35:39

Max-Planck-Gesellschaft Hybrid offspring of different house mice populations show a preference for mating with individuals from their father's original population Mate choice is a key factor in the evolution of new animal species. The choice of a specific mate can decisively influence the evolutionary development of a species. In mice, the attractiveness of a potential mate is conveyed by scent cues and ultrasonic vocalizations. Researchers from the Max Planck Institute for Evolutionary...

Investigating Coral Speciation And Adaptation
2013-02-07 19:34:01

Brett Smith for redOrbit.com — Your Universe Online When Darwin first formed his theory of evolution, he noted how physical isolation due to geographic barriers could result in the development of specialized adaptations. These novel adaptations were then selected and passed on to future generations. Eventually a new species would evolve. While many researchers are focused on how physical barriers and isolation can lead to new species on land, a pair of LSU biologists are more...


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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