Related topics: proceedings of the national academy of sciences , climate change , fish
Species
hideIn biology, a species is:
There are many definitions of what kind of unit a species is (or should be). A common definition is that of a group of organisms capable of interbreeding and producing fertile offspring, and separated from other such groups with which interbreeding does not (normally) happen. Other definitions may focus on similarity of DNA or morphology. Some species are further subdivided into subspecies, and here also there is no close agreement on the criteria to be used.
For more information about Species, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
News tagged with species
Pathogen protection and virulence: Dark side of fungal membrane protein revealed
Nov 06, 2009 |
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Researchers at the Virginia Bioinformatics Institute (VBI) at Virginia Tech and Montana State University have discovered a fungal protein that plays a key role in causing disease in plants and animals and which also shields ...
Caught in the act: Scientists find butterflies splitting into two species
Nov 05, 2009 |
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(PhysOrg.com) -- Breaking up may actually not be hard to do, say scientists who've found a population of tropical butterflies that may be on its way to a split into two distinct species.
DNA 'barcode' for tropical trees
Nov 04, 2009 |
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In foods, soil samples or customs checks, plant fragments sometimes need to be quickly identified. The use of DNA “barcodes” to itemize plant biodiversity was proposed during the 1992 Rio de Janeiro Summit. ...
Bacteria expect the unexpected: Scientists observe the emergence of a new adaptation strategy
Nov 04, 2009 |
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Organisms ensure the survival of their species by genetically adapting to the environment. If environmental conditions change too rapidly, the extinction of a species may be the consequence. A strategy to ...
Hybrid molecules show promise for exploring, treating Alzheimer's
Nov 04, 2009 |
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One of the many mysteries of Alzheimer's disease is how protein-like snippets called amyloid-beta peptides, which clump together to form plaques in the brain, may cause cell death, leading to the disease's devastating symptoms ...
Over 1,000 fish species 'threatened with extinction'
Nov 03, 2009 |
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More than 1,000 freshwater fish species are threatened with extinction, reflecting the strain on global water resources, an updated global "Red List" of endangered species showed Tuesday.
Data point to some improvements in China's environment
Nov 02, 2009 |
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The rapid growth of China's forests over the past 20 years makes them the fastest growing forest resources in the world, according to an assessment published in the November issue of BioScience.
Inconspicuous leaf beetles reveal environment's role in formation of new species
Oct 30, 2009 |
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(PhysOrg.com) -- Unnoticed by the nearby residents of St. Johnsbury, Vermont, tiny leaf beetles that flit among the maple and willow trees in the area have just provided some of the clearest evidence yet that ...
When ants attack: Researchers recreate chemicals that trigger aggression
Oct 27, 2009 |
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(PhysOrg.com) -- Experiments led by researchers at the University of California, Berkeley, have demonstrated that normally friendly ants can turn against each other by exploiting the chemical cues they use ...
'On the origin of nematodes' -- A phylogenetic tree of the world’s most numerous group of animals
Oct 27, 2009 |
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Scientists from Wageningen University and Research Centre have published the largest nematode Phylogenetic Tree to date in cooperation with the Dutch Plant Protection Service (PD) and the University of California ...
Charles Darwin really did have advanced ideas about the origin of life
Oct 27, 2009 |
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When Charles Darwin published The Origin of Species 150 years ago, he deliberately avoided the subject of the origin of life. This, coupled with the mention of the 'Creator' in the last paragraph of the book, ...
New study reveals first ever method to genetically identify all 8 tuna species
Oct 26, 2009 |
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A new paper published October 27 in PLoS ONE, the online, open-access scientific journal, unveils for the first time a method to accurately distinguish between all eight tuna species from any kind of processed tissue using ...
Ocean acidification may contribute to global shellfish decline
Space & Earth / Earth Sciences
Oct 26, 2009 |
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Relatively minor increases in ocean acidity brought about by high levels of carbon dioxide have significant detrimental effects on the growth, development, and survival of hard clams, bay scallops, and Eastern ...
Test Detects Insect Carriers of Citrus Greening Disease
Oct 26, 2009 |
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(PhysOrg.com) -- With their pleasing flavor, cheerful color, and health-imparting dose of vitamin C, it's not surprising that oranges are one of America's Top 10 favorite fruits. But some of the nation's citrus ...
Ancient Lemurs Take Bite Out of Evolutionary Tree (w/ Video)
Other Sciences / Archaeology & Fossils
Oct 21, 2009 |
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(PhysOrg.com) -- About 40 miles outside Cairo, Egypt, National Science Foundation-supported paleontologists from three American universities are revealing features of a newly discovered African primate and ...
