animals 2 4

Tag: "animals" at biology news

Small species back-up giant marsupial climate change extinction claim

...ther than by the arrival of humans who over hunted animals or destroyed habitats by burning the landscape. T...ed a bias in sample collection in favour of larger animals and there had been few attempts to document ecological and sediment data. "Our samples show that sp...

Same-Sex Mating Discovered in a Toxic Fungus

...ith half the number of chromosomes. Unlike diploid animals and plants, C. neoformans normal state is haploid, Heitman explained. Furthermore, the team showed, strains lacking components required for mating -- including pheromones, pheromone receptors and other genes with known roles in mating -- exhibited a...

Scientists journey to southern Africa to unravel the secret world of elephant communication

...A lot of research has been done showing that small animals use seismic signals to find mates, locate prey and...st wandering herbivores and curious lions. "Large animals could easily jump over the tarp or go right through it, but I think they perceive it as a solid obje...

New tumor-suppressor gene discovered

... our research, we speculate that all mats genes in animals and plants may regulate cell number and tissue growth by restricting the proliferation of cells and promoting their timely death," Lai says. This is the first time that any gene in the large superfamily to which the mats gene belongs has been shown ...

Cooperation is key—a new way of looking at MicroRNA and how it controls gene expression

... of genes that curb cell growth. Humans and other animals have evolved many overlapping ways of controlling gene expression. Many different controls determine when a DNA gene is transcribed into mRNA, and when and how the mRNA is translated into a protein. Many proteins are also tightly controlled through v...

Anammox bacteria produce nitrogen gas in oceans' snackbar

...ar in the tropical ocean, which is visited by many animals including giant whales. The newly discovered anammox bacteria remove ammonium from the ocean, which as a result can not be taken up anymore by other organisms. Algae and cyanobacteria only partly succeed in fixing the released nitrogen gas to form ne...

UN votes to ban human cloning

...nts, tissues, cells (other than human embryos), or animals (other than humans).They believe that nations should "actively pursue the potential medical and scientific benefits of these scientific methods, which have already enabled researchers to develop innovative drugs to treat diseases." The United Kingdo...

Biochemists report discovery of structure of major piece of telomerase; implications for cancer

...me together to form a triple helix. All vertebrate animals investigated so far have nearly the identical sequence of nucleotides through the triple helix, Theimer said. "The triple helical structure of the pseudoknot must be significant since it is conserved from humans to marsupials, birds and marine animal...

Undesirable expatriates: Preventing the spread of invasive animals

...L. Strayer, our best defense in combating invasive animals is ensuring that they don't infiltrate our natural...eas in the first place. Defined by the authors as animals that have established and spread outside of their native range, many invasive species become economi...

Genetic therapy reverses nervous system damage in animal model of inherited human disease

...this month's issue of the Annals of Neurology The animals involved in the study are born with a genetic disorder directly analogous to alpha-mannosidosis or AMD, an inherited disease in humans that causes severe mental retardation and skeletal abnormalities. Cats with AMD do not live more than six months. C...

Road salt affects mitigation wetlands

...linity of the wetlands to see how the salt affects animals and insects. "I am currently doing research in wetlands that the Pennsylvania Department of Transportation constructed as mitigation wetlands to replace all the ones that were destroyed by the new road," says Dr. Pamela Silver, professor of biology,...

The lopsided brain: Attention bias is shared by humans and birds

...ct may reflect evolutionary adaptations that allow animals to devote attention to multiple aspects of their environment. The findings are reported in the May 24 issue of Current Biology by Bettina Diekamp (now at Johns Hopkins University) and colleagues at Ruhr University, Bochum, Germany; the University of...

Secret of smallpox's success may lead to bioterror cure

...million particles, they don't even get sick -- the animals stay healthy," notes Jacobs. "The body reacts and it fights off both the mutant, and also the normal virus that normally would hide itself," said Jacobs. "The more you put in, the more likely it is for the immune system to say 'Hey, wait a minute! T...

Man-made wetland's effectiveness similar to natural marsh

...flourish, often to the detriment of fish and other animals that depend on waterways for survival. Algae essentially rob oxygen from water in a pond, lake and even the ocean. "We saw a pretty significant reduction in phosphorus and nitrate concentrations ?close to the kind of decrease we typically see in a n...

The circadian clock: Understanding nature's timepiece

...s not drying out when the sun comes up. Plants and animals have their own environmental niches and also unique temporal niches, as any cat owner can tell you. ...

Researchers find new giant amphibian fossils in Africa

..."This find is particularly interesting because the animals we found are not present anywhere else in the world at that time. These animals seemed to be restricted to this one region of Africa that had one of the driest climates on the plan...

Molecular fossils uncover link between viruses and the immune system

...delineated using fossils, e.g. physical remains of animals and plants. Later genome sequencing provided support for this framework at the molecular level. However, as virus sequences diverge rapidly and they do not leave behind physical fossils due to their small size, these methods could not be used in stud...

Low oxygen likely made Great Dying worse, greatly delayed recovery

...w-altitude passes had insufficient oxygen to allow animals to cross from one valley to the next. That populat...n only 20 million years, which is quite rapid, and animals that once were able to cross mountain passes quite easily suddenly had their movements severely rest...

Scientists reveal the shape of a protein that helps retroviruses break into cells

...w-altitude passes had insufficient oxygen to allow animals to cross from one valley to the next. That populat...n only 20 million years, which is quite rapid, and animals that once were able to cross mountain passes quite easily suddenly had their movements severely rest...

Python a 'hearty' eater

...lood. Hicks and his colleagues propose that these animals could be an informative model for investigating fundamental mechanisms leading to cardiac remodeling and ventricular growth in other animals, including humans. Hicks' research is supported by the Integrative Organismal Biology program at the Nationa...

1 2 3 4 5 6 7 8 9 10