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Sri Lankan snake study reveals new species, rich biodiversity in island country

A recent study led by George Washington University Assistant Biology Professor Alex Pyron used DNA sequencing technology to discover a new species of blindsnake in Sri Lanka, revealing the island's immense biodiversity. The research also shed light on the evolutionary relationships between snakes and other reptiles globally.

SourceGeorge Washington University·JournalMolecular Phylogenetics and Evolution·DateMar 12, 2013

JCI early table of contents for Feb. 22, 2013

Scientists successfully use parthenogenic stem cells to develop functional heart muscle and treat pulmonary fibrosis. Researchers find that inhibiting a protein called ROCK attenuates myofibroblast survival and prevents lung scarring.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateFeb 22, 2013

How to mend a broken heart: Advances in parthenogenic stem cells

Researchers at Georg-August-Universität Göttingen used parthenogenic stem cells to create cardiomyocytes and engineered heart muscle with normal properties. This breakthrough demonstrates the potential of parthenogenic stem cells for tissue engineering and could lead to new cell replacement therapies.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateFeb 22, 2013

Wallace's century-old map of natural world updated

The University of Copenhagen's researchers have produced a next-generation map depicting the organization of life on Earth, combining evolutionary and geographical information for over 20,000 species. The new map shows 11 large biogeographic realms and has major conservation significance in light of the ongoing biodiversity crisis.

SourceUniversity of Copenhagen·JournalScience·DateDec 20, 2012

Experts call for wildlife conservation network

Prominent wildlife biologists advocate for a national network to coordinate state, federal, and private initiatives. The proposed network aims to identify at-risk species, coordinate conservation efforts, and share information to address threats like climate change and novel diseases.

SourceIndiana University·JournalBioScience·DateOct 23, 2012

Environmental concerns increasing infectious disease in amphibians, other animals

Climate change, pollution, and invasive species are driving mortality in amphibians due to infectious disease, leading to extinctions rates 200 times higher than background extinction rates. Understanding these complex forces is crucial for addressing amphibian declines and emerging infections in humans.

SourceOregon State University·JournalPhilosophical Transactions of the Royal Society of London (B )·DateJul 18, 2012

Preserved frogs hold clues to deadly pathogen

A Yale graduate student has developed a method for detecting an infectious pathogen driving amphibian extinctions worldwide. By analyzing preserved specimens, she found evidence of the pathogen in six older samples from Connecticut, revealing its early presence in the region.

SourceYale University·JournalMethods in Ecology and Evolution·DateJun 20, 2012

Richer parasite diversity leads to healthier frogs, says University of Colorado study

A University of Colorado study found that increases in parasite diversity lead to a decrease in the infection success rate of virulent parasites, including one that causes malformed limbs and premature death. Higher biodiversity can help protect against certain diseases by acting as a buffer against virulent pathogens.

SourceUniversity of Colorado at Boulder·JournalProceedings of the National Academy of Sciences·DateMay 21, 2012

Fossil cricket reveals Jurassic love song

A fossilized bushcricket from the Jurassic period has revealed a new species' musical call, shedding light on the acoustic environment and potential auditory capacity of other animals. The song was reconstructed using biomechanical principles and is believed to have been used for long-distance communication.

SourceUniversity of Bristol·JournalProceedings of the National Academy of Sciences·DateFeb 6, 2012

Report: Herbicide atrazine spurs reproductive problems in many creatures

The review found consistent patterns of reproductive dysfunction in animals exposed to atrazine, with effects observed in amphibians, fish, reptiles, and mammals. Atrazine has been shown to disrupt hormone function and sexual development, leading to feminization of male gonads in many species.

SourceUniversity of Illinois at Urbana-Champaign, News Bureau·JournalThe Journal of Steroid Biochemistry and Molecular Biology·DateNov 28, 2011