When battling an epidemic of a deadly parasite, less resistance can sometimes be better than more, a new study suggests.
Ecology
Mar 29, 2012
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In the absence of eyes, the fresh water polyp, Hydra magnipapillata, nevertheless reacts to light. They are diurnal, hunting during the day, and are known to move, looping end over end, or contract, in response to light. ...
Plants & Animals
Mar 4, 2012
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Freshwater ecosystems in northern regions are home to significantly more species of water fleas than traditionally thought, adding to evidence that regions with vanishing waters contain unique animal life.
Ecology
Mar 2, 2012
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Biologists worldwide subscribe to the healthy herds hypothesis, the idea that predators can keep packs of prey healthy by removing the weak and the sick. This reduces the chance disease will wipe out the whole herd, but could ...
Ecology
Jun 23, 2011
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(PhysOrg.com) -- An international team of scientists has undertaken a study, the results of which have been published in the Proceedings of the National Academy of Sciences, to better understand the link between climate conditions ...
Only five species of these so-called 'flea' beetles, out of a global total of 60, had been found to date in New Caledonia, in the western Pacific. A three-year study has now enabled Spanish researchers to discover two new ...
Plants & Animals
Jan 18, 2011
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Some tiny crustaceans living in clear-water alpine ponds high in Washington state's Olympic Mountains have learned how to cope with the sun's damaging ultraviolet rays without sunblock – and with very little natural ...
Plants & Animals
Oct 13, 2010
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A new study co-authored by professor Kam Tang of the Virginia Institute of Marine Science reveals that tiny aquatic organisms known as "water fleas" play an important role in carrying hitchhiking bacteria to otherwise inaccessible ...
Cell & Microbiology
Aug 9, 2010
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Ecological changes caused by humans affect natural biodiversity. For example, the eutrophication of Greifensee and Lake Constance in the 1970s and 1980s led to genetic changes in a species of water flea which was ultimately ...
Evolution
Mar 12, 2009
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Responsible owners of the UK's 22 million cats and dogs may well have followed advice from many vets to treat pets with a monthly preventative "spot on" flea and tick treatment. However, these treatments are polluting our ...
Ecology
Apr 9, 2024
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