ScienceDaily: Top Environment News |
- Frogs use calls to find mates with matching chromosomes
- A new theory emerges for where some fish became four-limbed creatures
- Badwater Basin: Death Valley microbe may spark novel biotech and nanotech uses
- Sunlight and bunker oil a fatal combination for Pacific herring
- Over 65 million years, North American mammal evolution has tracked with climate change
- Molecular 'maturation clock' modulates branching architecture in tomato plants
| Frogs use calls to find mates with matching chromosomes Posted: 27 Dec 2011 12:37 PM PST When it comes to love songs, female tree frogs are pretty picky. According to a new study, certain female tree frogs may be remarkably attuned to the songs of mates who share the same number of chromosomes as they do. The discovery offers insight into how new frog species may have evolved. |
| A new theory emerges for where some fish became four-limbed creatures Posted: 27 Dec 2011 11:26 AM PST A small fish crawling on stumpy limbs from a shrinking desert pond is an icon of can-do spirit, emblematic of a leading theory for the evolutionary transition between fish and amphibians. This theorized image of such a drastic adaptation to changing environmental conditions, however, may, itself, be evolving into a new picture. |
| Badwater Basin: Death Valley microbe may spark novel biotech and nanotech uses Posted: 27 Dec 2011 11:26 AM PST Nevada, the "Silver State," is well-known for mining precious metals. But some scientists do a different type of mining. They sluice through every water body they can find, looking for new forms of microbial magnetism. |
| Sunlight and bunker oil a fatal combination for Pacific herring Posted: 27 Dec 2011 06:30 AM PST The 2007 Cosco Busan disaster, which spilled 54,000 gallons of oil into the San Francisco Bay, had an unexpectedly lethal impact on embryonic fish, devastating a commercially and ecologically important species for nearly two years, reports a new study. |
| Over 65 million years, North American mammal evolution has tracked with climate change Posted: 27 Dec 2011 06:30 AM PST Climate changes profoundly influenced the rise and fall of six distinct, successive waves of mammal species diversity in North America over the last 65 million years, shows a novel statistical analysis by evolutionary biologists. Warming and cooling periods, in two cases confounded by species migrations, marked the transition from one dominant grouping to the next. |
| Molecular 'maturation clock' modulates branching architecture in tomato plants Posted: 27 Dec 2011 06:30 AM PST The secret to pushing tomato plants to produce more fruit might not lie in an extra dose of Miracle-Gro. Instead, new research suggests that an increase in fruit yield might be achieved by manipulating a molecular timer or so-called "maturation clock" that determines the number of branches that make flowers, called inflorescences. |
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