ScienceDaily: Top Environment News: Newt transcriptome offers insight into tissue regeneration

Jay Owen Earth Systems Science

ScienceDaily: Top Environment News



Newt transcriptome offers insight into tissue regeneration

Posted: 19 Feb 2013 05:15 PM PST

Scientists have identified protein families expressed during tissue regeneration in newts, providing the groundwork for research into whether particular sets of genes are used for the purpose.

Genetic variation controls predation: Benefits of being a mosaic

Posted: 19 Feb 2013 05:15 PM PST

A genetically mosaic Eucalyptus tree is able to control which leaves are saved from predation because of alterations in its genes, finds a new study. Between two leaves of the same tree there can be many genetic differences – this study found ten SNP, including ones in genes that regulate terpene production, which influence whether or not a leaf is edible

How predictable is evolution?

Posted: 19 Feb 2013 02:21 PM PST

Understanding how and why diversification occurs is important for understanding why there are so many species on Earth. Researchers show that similar — or even identical — mutations can occur during diversification in completely separate populations of E. coli evolving in different environments over more than 1000 generations. Evolution, therefore, can be surprisingly predictable.

Mutant champions save imperiled species from almost-certain extinction

Posted: 19 Feb 2013 01:13 PM PST

Species facing widespread and rapid environmental changes can sometimes evolve quickly enough to dodge the extinction bullet. Scientists consider the genetic underpinnings of such an “evolutionary rescue.”

New approach alters malaria maps

Posted: 19 Feb 2013 01:12 PM PST

Identifying areas of malarial infection risk depends more on daily temperature variation than on the average monthly temperatures, according to researchers, who believe that their results may also apply to environmentally temperature-dependent organisms other than the malaria parasite.

Jurassic records warn of risk to marine life from global warming

Posted: 19 Feb 2013 11:05 AM PST

The risk posed by global warming and rising ocean temperatures to the future health of the world’s marine ecosystem has been highlighted by scientists studying fossil records.

How seals sleep with only half their brain at a time

Posted: 19 Feb 2013 11:02 AM PST

Biologists have identified some of the brain chemicals that allow seals to sleep with half of their brain at a time.

Nesting site protection ‘key to save turtles from climate change’

Posted: 19 Feb 2013 09:16 AM PST

International marine scientists warned it will be vital to protect key marine turtle nesting grounds and areas that may be suitable for turtle nesting in the future to ensure that the marine reptiles have a better chance of withstanding climate change.

When it comes to genetic code, researchers prove optimum isn’t always best

Posted: 19 Feb 2013 09:14 AM PST

Imagine two steel springs identical in look and composition but that perform differently because each was tempered at a different rate. Molecular biologists have shown that concept — that the speed of creation affects performance — applies to how a protein they studied impacts an organism’s circadian clock function.

Russian fireball largest ever detected by Comprehensive Nuclear‑Test‑Ban Treaty Organization’s infrasound sensors

Posted: 19 Feb 2013 09:12 AM PST

Infrasonic waves from the meteor that broke up over Russia’s Ural mountains last week were the largest ever recorded by the Comprehensive Nuclear?Test?Ban Treaty Organization’s International Monitoring System. Infrasound is low frequency sound with a range of less than 10 Hz. The blast was detected by 17 infrasound stations in the CTBTO’s network, which tracks atomic blasts across the planet. The furthest station to record the sub-audible sound was 15,000km away in Antarctica.

‘Growing’ medicines in plants requires new regulations, experts say

Posted: 19 Feb 2013 09:12 AM PST

Scientists say amending an EU directive on GMOs could help stimulate innovation in making vaccines, cheaper pharmaceuticals and organic plastics using plants.

Effects of human exposure to hormone-disrupting chemicals examined in landmark United Nations report

Posted: 19 Feb 2013 08:55 AM PST

Many synthetic chemicals, untested for their disrupting effects on the hormone system, could have significant health implications according to the State of the Science of Endocrine Disrupting Chemicals, a new report by the United Nations Environment Programme (UNEP) and WHO.

‘Uuneven’ global sea-level rise predicted

Posted: 19 Feb 2013 07:24 AM PST

Sophisticated computer modelling has shown how sea-level rise over the coming century could affect some regions far more than others. The model shows that parts of the Pacific will see the highest rates of rise while some polar regions will actually experience falls in relative sea levels due to the ways sea, land and ice interact globally.

New scorpion discovery near metropolitan Tucson, Arizona

Posted: 19 Feb 2013 07:23 AM PST

Zoologists have discovered a new species of Sky Island scorpion from the Santa Catalina Mountains of Arizona, less than 10 miles from metropolitan Tucson. Amazingly, the discovery was made by a biologist while looking for a completely different animal. The scorpion found “by mistake” adds a fascinating new species to the biodiversity of North America.

Phosphorus starvation linked to symptoms of citrus disease Huanglongbing in new study

Posted: 19 Feb 2013 07:23 AM PST

The citrus disease Huanglongbing is the most destructive disease threatening the citrus industry worldwide. Powerful diagnostic tools and management strategies are desired to control it. A new study profiled small Ribonucleic Acids from diseased and healthy plants and found that some could potentially be developed into early diagnosis markers.

Top predators have sway over climate

Posted: 19 Feb 2013 06:10 AM PST

Researchers have found that when the animals at the top of the food chain are removed, freshwater ecosystems emit a lot more carbon dioxide into the atmosphere.

Towards a new moth scent

Posted: 19 Feb 2013 06:07 AM PST

A single mutation in a moth gene has been shown to be able to produce an entirely new scent. In the long run, the researchers say that the results could contribute to tailored production of pheromones for pest control.

Lake-effect snow sometimes needs mountains

Posted: 19 Feb 2013 06:05 AM PST

Researchers ran computer simulations to show that the snow-producing “lake effect” isn’t always enough to cause heavy snowfall, but that mountains or other surrounding topography sometimes are necessary too.

In tiny Amazon frogs, males observed extracting oocytes from females killed in mating struggles

Posted: 18 Feb 2013 06:25 AM PST

Sex is a risky business for many animals. Those who take part in ‘explosive breeding’ — where many males gather and compete for a small number of females over a few days — have it particularly tough. Males can become exhausted from the competition and search for a scarce mate, or from trying to dislodge other males from receptive females. The females themselves can be unintentionally crushed, drowned or simply exhausted under the weight of their many suitors.