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Tag: species

Without genetic variation, asexual invasive species have to find other ways to adapt

Without genetic variation, asexual invasive species have to find other ways to adapt

Science
July 30 (UPI) -- Invasive all-female weevils pass along epigenetic changes to their offspring, helping them adapt to new environs, according to a new study. Across most of the animal kingdom, an organism's ability to adapt and evolve is largely dependent on genetic variation. Sufficient genetic diversity makes it more likely that favorable traits will emerge and proliferate as the fittest specimens populate subsequent generations. Some species, however, reproduce asexually, which means their genetic reservoir is limited. So how do they adapt to new environs? To find out, researchers collected specimens of two asexually reproducing, invasive weevil species, Naupactus cervinus and N. leucoloma, from Florida, California and Argentina. Despite sharing the exact same DNA, research...
The real reason humans are the dominant species

The real reason humans are the dominant species

Science
Getty ImagesFrom early humans rubbing sticks together to make fire, to the fossil fuels that drove the industrial revolution, energy has played a central role in our development as a species. But the way we power our societies has also created humanity's biggest challenge. It's one that will take all our ingenuity to solve.Energy is the key to humanity's world domination. Not just the jet fuel that allows us to traverse entire continents in a few hours, or the bombs we build that can blow up entire cities, but the vast amounts of energy we all use every day. Consider this: a resting human being requires about the same amount of energy as an old-fashioned incandescent light bulb to sustain their metabolism - about 90 watts (joules per second). But the average human being in a developed cou...
A quarter of known bee species haven’t been seen in more than 20 years

A quarter of known bee species haven’t been seen in more than 20 years

Science
Jan. 22 (UPI) -- There's never been more data on the world's animal and plant populations, but despite the proliferation of public records on species abundance, many known bee species have disappeared from datasets. According to a new survey, published Friday in the journal One Earth, roughly a quarter of known bee species haven't made an appearance in public records in more than 20 years. Advertisement "With citizen science and the ability to share data, records are going up exponentially, but the number of species reported in these records is going down," first author Eduardo Zattara, biologist at the Pollination Ecology Group from the Institute for Research on Biodiversity and the Environment, said in a news release. Disappearance from the scientific record isn't proof of extinction. M...
Atlantic discovery: 12 new species ‘hiding in the deep’

Atlantic discovery: 12 new species ‘hiding in the deep’

Science
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Extinction: Conservation success set against 31 lost species

Extinction: Conservation success set against 31 lost species

Science
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