Give a careful report of your own observations on any one species of the order.
And as one species thins out, it falls off the menu to be replaced by another.
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All the beers in this country use just one species of plant: hops.
He's aiming impossibly high again, making big headlines for transplanting the entire genome of one species of bacterium into another.
Prof Cani said it was "surprising" that just one species, out of the thousands in the gut, could have such an effect.
And that could suggest broad physical variation existed happily within one species.
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In effect, one species can be made to give birth to another.
As would be expected, the one species that feeds almost exclusively on mistletoe berries, the aptly named mistletoebird, vanished from the culled woodlands.
Taxonomists do not always get it right first time, of course, and what looked like one species may rightly later be seen as two.
The goats represent a promising new avenue in the controversial field of transgenics, the science of splicing one species' genes onto the genome of another.
Thermos also described an exploitable hole in ZRTP, one species of the VoIP language real-time transfer protocol: ZRTP encrypts all transmitted sounds, but not the numbers translated from tones.
It is therefore essential to understand how this disease is transmitted from one species to another, especially in the case of humans where the infectious prions survive through stages of cooking and digestion.
She said trace contamination with other animals - including pig and horse - could take place at abattoirs and processing plants dealing with more than one species "even with thorough cleaning and good hygiene practice".
One species of honey bee has 70.
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According to Dr Sinclair's theory, which he calls xenohormesis, animals rely on such botanical stress signals to give them extra information about their own environments, in the same way that the alarm calls of one species warn others of danger.
We don't yet know which species will benefit, and which will suffer in response to the changes, but because each species plays a specific ecological role on the tundra, the downfall of one species or proliferation of another could have a domino effect that disrupts the tundra's delicate food web.
The firm recently made headlines by showing that the genome of one bacteria species could be transplanted into a similar one--a step toward making a germ with entirely man-made genes.
It is as if they are one big species with lots of differently colored males.
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But in the succeeding decades, one prize species after another was overfished and disappeared.
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How much of the other species one can eat depends on the species.
There is other evidence too, which might support the "one variable species" theory.
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The researchers estimate that the ocean may be home to as many as one million species in all-likely not more.
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So the distribution of mimetic species should be one of local clusters of good mimics, against a wider background of poor ones which may mean that a poorly mimetic species outnumbers a good one.
"Introduced species are one of the principal causes of endangerment for half of endangered species, " says Daniel Simberloff, a professor of ecology and evolutionary biology at the University of Tennessee.
But Aedas sollicitans, a big aggressive salt-water mosquito, shouldn't really be one of those species.
The Sulawesi crested macaques are one of seven species of macaque on the Indonesian island which are found nowhere else in the world.
On the Sunday, the collected mushrooms are on display (groups can only pick one of each species to insure their long-term survival) and local experts give talks on fungi varieties.
For example, one gleaning bat species, the Bechstein's bat (Myotis bechsteinii), is less likely to cross roads than other bat species that forage in open areas, suggesting the noise of the traffic could fragment their hunting grounds.
He said it was not clear if the bittern was one of the breeding birds from Leighton Moss or one of the species' foreign visitors, which come to Britain to overwinter and escape colder weather on the continent.
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