species 2 2

Tag: "species" at biology news

Ants Genetic Engineering Leads To Species Interdependency

...ed dependency between them for thesurvival of both species populations.The new work illustrates how genetic exchange through interbreedingbetween two species can give rise to a system of interdependence at ahigh level of biological organization - in this cas...

Same mutation aided evolution in many fish species, Stanford study finds

...e genetic trick time and again to allow freshwater species to shed their burdensome body armor and transform ...ter sticklebacks they studied, including one local species the group collected from a stream near Fresno. Perhaps mutations in the two other genes cause proble...

Introduced foxes transformed vegetation on Aleutian Islands from lush grasslands to tundra

...s the direct effects on the seabirds. "Introduced species are a global phenomenon, and we tend to focus on t...ct effects, such as the reduction or extinction of species that are consumed by an introduced predator. This study shows how the effects of introduced species ...

Scientists reveal molecular secrets of the malaria parasite

...o."The study highlights the genes in four malarial species that evolverapidly because of "selective pressures...uencing and genome annotation was performed on two species of rodentmalaria (Plasmodium chabaudi and P. berghei); the University of Leidenin the Netherlands an...

Scientists discover unique microbe in California's largest lake

...w that they were verysimilar to those known from a species of blue-green algae calledAcaryochloris marina, bu...made by Acaryochloris and it is what enables these species to useinfrared light."The new microbe is one of only three organisms known to science thatuse a comb...

MSI releases 'moleculizer' - a new approach to simulation of intracellular biochemical networks

...ator, which keeps trackof the thousands of complex species formed from pathway proteins as itsimulates reacti...lular systems, where the huge numbers of potential species andreaction channels makes things very difficult."Computer simulations can be powerful tools in cont...

Scientists document complex genomic events leading to the birth of new genes

...olecular level, however, the differences among the species are much more complex. Bork's team systematically...copy in humans but only a single copy in all other species tested. They then turned their attention to the gene that exhibited the most dramatic of these dupli...

Examination of internal 'wiring' of yeast, worm, and fly reveals conserved circuits

... and Germany have compared three distantly related species ?baker's yeast, a worm, and the fruit fly ?and reported that protein "wiring" connections in one species are often conserved in all three. This first-of-its-kind analysis of three higher level organisms pu...

South America's vast pantanal wetland may become next everglades, UNU experts warn

...ruction and narrowing migration corridors for many species are among the consequences of introducing intensiv...ed, including more than 650 bird species, over 190 species of mammal, 50 reptiles, more than 1,100 butterfly species and 270 fish species. It is also the winte...

Falling ants glide back to trunk to avoid dangers of forest floor

... percent of the ants ?a widespread tropical canopy species called Cephalotes atratus ?are able to land on the... summer in Panama for a week to videotape the same species of ant in freefall, with a white sheet standing in for the tree trunk. Yanoviak's earlier observati...

Unexpressed But Indispensable -- The DNA Sequences That Control Development

...fish. Since the last common ancestor of these two species existed 450 million years ago, the authors reasoned that non-coding sequences conserved between them are likely to be fundamental to vertebrate development. Through sequence alignment with increasingly strict criteria, they identified 1,373 highly co...

Family trees of ancient bacteria reveal evolutionary moves

...oduce oxygen and biomass ?has concluded that these species got their start on Earth in freshwater systems on ...iple genes from whole genome sequences. Additional species were added to the tree using ribosomal RNA genes. Morphological characters, for instance, the presen...

In the migratory marathon, parasitized monarchs drop out early

...ds, combined with an increase of tropical milkweed species in milder climates, could ultimately replace the large migratory populations with smaller remnants that breed year-round and do not migrate. Study results suggest that if migration is lost from this system, remaining populations will become heavily ...

Sequencing of marine bacterium will help study of cell communication

...is was also the first time a non-pathogenic Vibrio species has been sequenced and there is the potential for valuable lessons as it is compared with the pathogenic species. I was particularly pleased when my graduate student, Marie Faini, and I were given the opportunity to be members of the team that annota...

Sexual cooperation: Mating increases longevity in ant queens

...on throughout their lifetime, ant queens in social species mate only during a short period early in life and store and use the sperm of their mate for the rest of their lives. Sexual offspring are only produced after several months or years of colony growth, during which a sterile worker force is built up in...

LUCA technologies confirms real-time methane generation

...equently thrive in anaerobic environments and many species are known for their heat tolerance. Thermatoga microorganisms are known to play a role in the anaerobic oxidation of hydrocarbons to alcohols, organic acids and carbon dioxide. Thermatoga also thrive in high temperature environments, such as those fo...

Vampire bats keep out of trouble by running

...als that flit about in the night sky, at least one species has evolved a terrestrial trot never before seen i... they like to walk around on the ground; other bat species fumble helplessly when left to walk. But researchers in Cornell's College of Veterinary Medicine hav...

Multiple Campylobacter Genomes Sequenced

...with Campylobacter. Infection with a Campylobacter species is one of the most common causes of human bacteria..., but we still know little about how Campylobacter species cause disease. In their search for clues, Derrick Fouts and coworkers have completely sequenced the ...

A new study examines how shared pathogens affect host populations

Many pathogens are able to infect multiple species within a community and are commonly transmitted ac...red as a negative factor for humans, wildlife, and species of agricultural importance. Many pathogens like malaria, Lyme disease or West Nile encephalitis that...

Cricket's finicky mating behavior boosts biodiversity

...ale courtship songs, which differ from one Laupala species to the next. They refuse to mate with males of oth...the role of individual choices in the evolution of species and the growth of biodiversity. "Animals with nervous systems and brains have preferences and can m...

1 2 3 4 5 6 7 8 9 10