Tag: "fertile" at biology news

Satellite tracking reveals threats to Borneo pygmy elephants

...ts because there is more food of better quality on fertile lowland soils. But the study also shows that elephants movements are noticeably affected by human activities and forest disturbance. Data gathered so far reveals there are probably not more than 1,000 pygmy elephants left in Sabah less than the 1,...

New way to target and kill antibiotic-resistant bacteria found

...discovered a key weakness in the enzyme that helps fertile bacteria swap genes for drug resistance. Drugs called bisphosphonates, widely prescribed for bone loss, block this enzyme and prevent bacteria from spreading antibiotic resistance genes, the research shows. Interfering with the enzyme has the added e...

Don't overlook urban soil

...ISON, WI, JUNE 20, 2007 -- If you were looking for fertile soil, its doubtful youd begin your search in most U.S. cities. After all, urban soils are often viewed as drastically disturbed soils with low fertility. However, new research by a team of scientists working in Baltimore discovered that surface soil ...

Smithsonian scientists connect climate change, origins of agriculture in Mexico

...me magnets for human populations who exploited the fertile soils and rich aquatic resources the lakes contain...that maize and squash were probably planted at the fertile edges by 8000 B.P. Pollen from teosinte is indistinguishable from that of maize, but Zea pollen is c...

New NIST reference material for peptide analysis

...d the roles they play in biologyis one of the most fertile fields of modern medical research. Proteins typically are very large molecules, built of hundreds or thousands of amino acids, but they can be divided into smaller units, chains of about 50 or fewer amino acids. These are peptides. The usual way to a...

Researcher finds negative effects of colonization on slash-and-burn farming method in western Borneo

... forested areas, burning the vegetation to produce fertile ash and then farming that land for a period of time. Sometimes the Iban used old growth forest, while at other times this was done with secondary forest (forest that had been more recently farmed and then left fallow, which is most common today). Ric...

Researchers find gene mutation that causes infertility in male mice

...h parent) is dominant; females who carry it remain fertile but carry the defect and pass the mutation on to future generations. However, female carriers show higher rates of abnormalities during meiosis, which can potentially cause chromosome imbalances and birth defects, the researchers discovered. In addit...

Ancient coral reef tells the history of Kenya's soil erosion

...is a serious threat, he noted, because the loss of fertile soil often is accompanied by a decrease in food production. According to one recent study, soil erosion is a global problem that has caused widespread damage to agriculture and animal husbandry, placing about 2.6 billion people at risk of famine. "Th...

Evolution of symbiosis

...ra symbiotic with other aphid species. This offers fertile ground for further study of the intriguing interplay among aphids, bacteria, and temperature. ...

Female chimps keep the bullies at bay

...untains National Park in Tanzania, synchronize the fertile period of their reproductive cycles.** The autho...social and physical attributes, will mate with the fertile females. These sought-after characteristics could be inherited by their offspring. ...

New study rewrites evolutionary history of vespid wasps

...bers of the group perform tasks that support their fertile counterparts. Eusociality occurs in only a few species of insects, rodents, crustaceans and other arthropods. The evolution of eusociality in wasps has long been a source of debate, said U. of I. entomology graduate student Heather Hines and entomo...

New research finds that a natural family planning method is as effective as the contraceptive pill

... planning that uses two indicators to identify the fertile phase in a womans menstrual cycle is as effective ...ples to identify accurately the time of the womans fertile phase by measuring her temperature and observing cervical secretions. In the largest, prospective st...

It's not easy being green

...f organic matter in the soil, which makes for more fertile soil. Harvesting the corn stalks or the cover crop to make cellulosic ethanol also reduces nitrous oxide emissions and reduces overall greenhouse gas levels because the ethanol is used instead of gasoline. But without proper management, harvesting...

New hope for regenerative medicine

...ived from sperm of one male (androgenetic), adding fertile males to the potential patient pool. Since uniparental ES cells are not derived from viable embryos, their harvesting and use sidesteps many of the ethical concerns that plague traditional ES cell therapies. However, uniparental ES cell research fa...

Mice cloned from skin cells

... for a mouse. In addition, many of these mice were fertile and healthy. The difference in cloning rates of male and female stem cells seems likely to involve epigenetics," Fuchs said. Epigenetic modifications are those that affect a gene's function without altering its DNA sequence. These changes are rever...

Manipulating nature: Scientists query wildlife birth-control method

... around the world, 10 per cent of animals remained fertile because they were unresponsive to self-antigens. His second concern is that the technique is effectively a form of genetic engineering: "Immunocontraception alters the gene pool of the targeted species because those animals who are unresponsive are...

New study is first to link romantic relationships to genes

...rimary partners increased, particularly during the fertile phase of their cycles," says Christine Garver-Apgar, author of the study. This study offers some understanding of the basis for romantic chemistry, and is the first to show that compatible genes can influence the sexual relationships of romantic c...

Mixed prairie grasses are better biofuel source, U of M study says

...stantial portion of global energy needs, and leave fertile land for food production," Tilman said. The fi...re energy per acre than ethanol from corn grown on fertile land. This is because perennial prairie plants require little energy to grow and because all parts o...

New clues to how sex evolves

...ring meiosis, so even those who mate can't produce fertile offspring." The question remains whether new binding sites or new forms of zinc-finger protein lead rapid evolution in the worms. And there are other questions: in C. elegans, and also C. remanei, there are only four kinds of ZIM proteins that ser...

Remote latrine reconfirms the presence of Essene sect at Qumran

...from the latrine area and is likely to have been a fertile breeding ground for pathogens picked up from the human waste-enriched soil. "Here is where things really get bad," Zias explained. "After they went to the latrines they were required to enter one of the emersion cisterns (Miqvot) before they came b...

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(Date:4/23/2014)... one can argue that if we were to follow a ... we canthen we can solve the climate problem without doing ... climate researchers, in the current issue of Bulletin of ... significant action on climate change now makes it more likely ... Wigley explains in an exclusive Bulletin interview. ...
(Date:4/22/2014)... There are all sorts of signaling strategies in nature. ... tails; satin bowbirds build specialized stick structures, called bowers, ... European bitterling males show off bright nuptial coloration during ... to communicate with others. , ... profound fitness implications for individuals that are either signaling ...
(Date:4/22/2014)... the University of Montana,s Wildlife Biology Program, co-wrote a research ... National Academy of Sciences on how streamwater chemistry varies ... Lowe and ... of Washington, the Cary Institute of Ecosystem Studies, the University ... examined 664 water samples collected every 10 meters along 32 ...
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