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Latest Evolutionary biology Stories

2013-06-21 13:05:27

As past extinctions show, groups must continually adapt and evolve or they disappear The death of individual species is not the only concern for biologists worried about groups of animals, such as frogs or the "big cats," going extinct. University of California, Berkeley, researchers have found that lack of new emerging species also contributes to extinction. "Virtually no biologist thinks about the failure to originate as being a major factor in the long term causes of extinction,"...

2013-06-20 11:13:54

Low doses of silver make bacteria more susceptible to antibiotic attack, paving the way for new therapies for drug-resistant and recurrent infections Slipping bacteria some silver could give old antibiotics new life, scientists at the Wyss Institute for Biologically Inspired Engineering at Harvard University reported June 19 in Science Translational Medicine. Treating bacteria with a silver-containing compound boosted the efficacy of a broad range of widely used antibiotics and helped...

Females Choose Biological Fitness Over Other Traits In Mating Game
2013-06-20 10:46:19

National Institute for Mathematical and Biological Synthesis When a new species emerges following adaptive changes to its local environment, the process of choosing a mate can help protect the new species' genetic identity and increase the likelihood of its survival. But of the many observable traits in a potential mate, which particular traits does a female tend to prefer? A new study from the National Institute for Mathematical and Biological Synthesis finds that a female's mating...

Male Guppies Reproduce Even After Death
2013-06-13 11:37:08

University of California - Riverside UC Riverside-led research team finds posthumous reproduction in guppies because sperm of dead males survive inside females for at least 10 months Performing experiments in a river in Trinidad, a team of evolutionary biologists has found that male guppies continue to reproduce for at least ten months after they die, living on as stored sperm in females, who have much longer lifespans (two years) than males (three-four months). "Populations that are...

2013-06-11 21:08:00

Individuals of a particular species generally differ from one another. We are clearly most adept at recognizing members of our own species, although dog and cat owners will be ready to confirm that their pets look unique. Differences within species relate to characteristics such as size and shape but also to color: it is not only humans that show a wide range of skin pigmentation. Nevertheless, the cause of the variation in skin color in animals has remained largely a matter for conjecture....

2013-06-11 13:25:51

Although scientists have known since the middle of the 19th century that the tropics are teeming with species while the poles harbor relatively few, the origin of the most dramatic and pervasive biodiversity on Earth has never been clear. New research sheds light on how that pattern came about. Furthermore, it confirms that the tropics have been and continue to be the Earth's engine of biodiversity. By examining marine bivalves (two-shelled mollusks including scallops, cockles and...

2013-06-11 11:31:43

Preschool children who have been neglected or emotionally abused exhibit a range of emotional and behavioral difficulties and adverse mother-child interactions that indicate these children require prompt evaluation and interventions, according to a systematic review by Aideen Mary Naughton, M.B., B.Ch., B.A.O., D.C.H., F.R.C.P.C.H., of Public Health Wales, Pontypool, England, and colleagues. A total of 42 studies of children age 0 to 6 years with confirmed neglect or emotional abuse who...

2013-06-11 11:12:09

Females play a larger role in determining paternity than previously thought, say biologists in Syracuse University's College of Arts and Sciences. Their findings are the subject of a new paper titled "Female mediation of competitive fertilization success in Drosophila melanogaster," published this month by Proceedings of the National Academy of Sciences of the United States of America. Stefan Lüpold, a research assistant professor in the college's Department of Biology and...

Self-fertilizing Plants Play Part In Their Own Death
2013-06-10 10:28:56

University of Toronto Many plants are self-fertilizing, meaning they act as both mother and father to their own seeds. This strategy — known as selfing — guarantees reproduction but, over time, leads to reduced diversity and the accumulation of harmful mutations. A new study published in the scientific journal Nature Genetics shows that these negative consequences are apparent across a selfing plant's genome, and can arise more rapidly than previously thought. In the study,...

New Genes Essential To Life
2013-06-07 11:53:53

Brett Smith for redOrbit.com - Your Universe Online Some genes within an organism´s DNA have been there for a billion years and can be traced back through earlier species, while other genes are newly acquired and only a few million years old. According to a new report in the journal Science, these newly acquired genes can quickly become a major part of an organism´s genetic machinery and even essential for life. In the study, a team of American and German researchers were able...


Latest Evolutionary biology Reference Libraries

2014-04-22 14:47:42

John Harold Ostrom (February 18, 1928 – July 16, 2005) was an American Paleontologist who was greatly influential in the revival of scientific research on Dinosaurs. He is best known for demonstrating that Dinosaurs were less like contemporary reptiles but more closely related to large, flightless birds like the ostrich – a theory that holds its ground in the paleontological community to this day. John Ostrom was born and raised in Schenectady, New York. His father was a physician, and...

Paleontology
2014-01-12 00:00:00

Paleontology or Palaeontology is the scientific study of prehistoric life, including the study of fossils to determine the organisms evolution and interactions with each other and their environments. Paleontological observations have been documented as far back as 5th century BC. The science became established in the 18th century as a result of Georges Cuvier’s work on comparative anatomy, and it developed quickly within the 19th century. The term itself comes from Greek palaios, meaning...

New Phytologist
2012-04-30 15:00:51

The New Phytologist is a peer-reviewed scientific journal published by Wiley-Blackwell on behalf of the New Phytologist Trust. It covers all aspects of plant science, with topics ranging from intracellular processes to global environmental change. Articles are published in the following categories: Original research articles, Research reviews, Commentaries, Letters, Meeting reports, Tansley reviews. The following topics and subtopics are covered: Physiology and development:...

Journal of Zoological Systematics and Evolutionary Research
2012-04-29 22:59:00

Journal of Zoological Systematics and Evolutionary Research is a quarterly peer-reviewed scientific journal published by Wiley-Blackwell. It was originally established in 1963, then reestablished in 1994 by John Wiley & Sons. It was published as ‘Zeitschrift für zoologische Systematik und Evolutionsforschung’ from March 1963 to June 1994. It was published by the Academic Publishers’ Association (Akademische Verlagsgesellschaft ) Frankfurt, Germany. The editor-in-chief is Dr....

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Word of the Day
barratry
  • The offense of persistently instigating lawsuits, typically groundless ones.
  • An unlawful breach of duty on the part of a ship's master or crew resulting in injury to the ship's owner.
  • Sale or purchase of positions in church or state.
This word ultimately comes from the Old French word 'barater,' to cheat.
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