Sentences with phrase «different species»

The researchers found that the fungus can easily be transmitted between salamanders of different species by direct contact.
The latest tome from prolific nature writer Mabey tells the story of our relationship with plants — as food and medicine, as symbols and fashion statements — through fascinating vignettes of different species from the green kingdom.
A total of 103 samples were collected, out of which the team of scientists determined ten different species, seven of which are new to science.
The researchers found that some of the evidence for rising dino diversity in the Cretaceous period came from sampling bias; more fossils of different species are available from the period than from earlier periods — a factor that could be due to chance.
Scientists had known for decades that wing lice occasionally attach themselves to the hippoboscid fly, an insect that sips blood from many different species of birds.
Previous research had shown that genome sizes vary widely across different species of insects or plants, a telltale sign of fluctuation.
Using a new technique for closely studying host blood DNA, the team determined the host origin for three - quarters of these samples, showing that the flies had fed on over 20 different species ranging from elephants and hippopotamuses to reptiles and birds.
The 115,000 individuals are representing 246 different species of moths.
Like Wray, the scientists estimated the genes» rate of evolution by comparing their DNA sequences in two different species, a technique calibrated to the date when the two species are known to have diverged.
One of the outputs of the evolutionary analysis of genomes is the reconstruction of phylogenetic trees that map out common ancestors, their descendants, and the relationships between the different species.
With so many different species evolving in different directions in different parts of the world, evolution was more likely to stumble across new evolutionary paths.»
And when the squirrels got all their nuts from a central location, they spatially chunked them: «So they would actually cache nuts that were the same species in distinct areas from nuts of a different species... so the take home message I think for me is really that just like physical traits have evolved, I believe that cognitive traits have evolved as well.
So the team collected snakes of several different species in Alabama's Tuskegee National Forest — near where EEEV is known to strike — and tested their blood for signs of the virus.
It builds on the established principle of convergent evolution, a widely - supported theory — although one still disputed by some biologists — that different species will independently evolve similar features.
Human cultural groups have behaved as if they were different species that actively exclude each other, and cultures do have a wariness of strangers.
The neighbor - joining method allows scientists to calculate when different species, or variations within a species, diverged by analyzing differences on a molecular level.
To investigate this covert struggle, Hay and colleagues strung eight different species of Fijian seaweed across growing corals, including A. millepora colonies.
The ground finches may seem to be different species, at least with superficial comparison, but they're stuck in what he calls Sisyphean evolution.
If you see many different species, there is a high biodiversity.
[Do] most people think this is really a completely different species, or are most people subscribing to the idea that this is a human with an actual disease?
The proposal is the latest salvo in the battle about whether these diminutive people were truly a different species of human, but it's unlikely to end the debate.
«It could be that we are seeing two different species bashing in different ways, but it could also be a single dinosaur species where juveniles and adults exhibit different bashing behaviors,» says Andrew Farke, a paleontologist at the Raymond Alf Museum of Paleontology in Claremont, California.
The area is rich with animal skeletons, and they estimate there are at least 13 different species of dinosaur present based on teeth and other remains, plus birds, small mammals and some fish.
The old taxonomists assumed that these could be different species or subspecies.
Background Over millions and millions of years, all of the different species have come to look and act the way they do through a process called evolution by natural selection.
New research by UVM's Joe Roman and colleagues shows that these ancient reptiles — with fossil records going back fifteen million years — are more endangered than previously realized: their remaining populations are actually three different species.
«We leveraged the extreme traits in different species to uncover noncoding regions in the human genome that likely have important roles in shaping health and disease,» said Elliott Ferris, first author on the paper and a bioinformatician and computer programmer in Gregg's lab.
Species diversity in particular is a subcategory of biodiversity that refers to the number of different species represented in a set.
«We have used data from biological observations and analysed the relationship between the different species and their place in the food chain.
A meta - analysis of ecosystems finds that species losses in any given place do not yet translate to large changes in the number of different species in that place.
Some say that if the various bones had been found separately, they would have been assumed to belong to different species.
«Bacteria are very good at integrating a lot of information about the environment, as different species of bacteria have different nutrient requirements.
A recent study finds that different species of the fungi genus can do their dirty work only on particular host ants.
Modern wheat, which underlies the diet of many across the globe, has a long history of selection and crosses among different species.
The Welcome Trust - funded Sanger Institute, near Cambridge in the UK, carries out large - scale sequencing and analysis to further the knowledge of genomes of different species.
To carry out the study, the team visualised a number of motors from different species of bacteria using a variant of a method called cryo - election microscopy, whose pioneers were awarded the Nobel Prize in Chemistry this year.
In 2008 and 2009, four species of coral guard - crabs known to protect coral from predator sea stars were studied in a series of experiments to examine the effectiveness of different species and various sizes of crabs at repelling multiple corallivores.
Another recent survey of 1200 households across the United States found that household dust holds an average of 9000 different species of bacteria and fungi.
They analyzed 24 nest characteristics, including shape, material, and building behaviors — such as tree - hollowing, leaf - stripping, or plant - macerating — looking for common materials or methods shared by different species that would point to a recent common ancestor.
«The morphological identification of the different species present in each sample, however, no longer meets the needs of rapid and reliable bioassessment measures introduced to protect aquatic environments.
Animal experiments have shown it is possible to transmit the prion via blood, but prions behave differently in different species, and these three cases are the only definitive evidence that blood - borne transmission can happen in people.
That observation suggested there might be different species within the material than previously believed.
To each species of Azollabelongs a different species of accompanying bacteria, and the bacteria is passed on from one fern to the next in their spores,» said Francisco Carrapico, a cell biologist and Azolla expert at the University of Lisbon.
Mitochondrial DNA from nine samples showed that Ötzi's getup consisted of hides from five different species: goat leather leggings, a sheep hide loincloth, a roe deer quiver, cattle hide shoelaces, a brown bear fur hat, and a heavy coat made of goat and sheep hides haphazardly stitched together.
When the researchers then compared the analysis of tomatoes with that of duckweed and the research model Arabidopsis thaliana, they discovered an overlap in specialized metabolite content among these strikingly different species.
Because intensive farming of just a few plant species can harm biodiversity and reduce the richness of soil, Chae says the company aims to identify several different species with the same functional properties.
Synchrotron X-ray imaging on different species showed that the transmission of the sound from the oral cavity to the inner ear has been optimized by two evolutionary adaptations: a reduced thickness of the tissue between the mouth and the inner ear and a smaller number of tissue layers between the mouth and the inner ear.
The extra structures appear to have evolved many times in different species of bacteria, using different building blocks but producing the same functionality.
First of all, different species of these small lizards can interbreed.
The tags emit tiny beeps that are recorded by underwater receivers and are designed to track many different species of fish including long - living fish such as sturgeon and migratory species of concern such as eel and lamprey.
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