News tagged with water flea
Not a one-way street: Evolution shapes environment of Connecticut lakes
Environmental change is the selective force that preserves adaptive traits in organisms and is a primary driver of evolution. However, it is less well known that evolutionary change in organisms also trigger ...
May 23, 2012 |
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Research shows that weakness can be an advantage in surviving deadly parasites
When battling an epidemic of a deadly parasite, less resistance can sometimes be better than more, a new study suggests.
Mar 29, 2012 |
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Seeing without eyes: Hydra stinging cells respond to light
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 res ...
Mar 04, 2012 |
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Unexpected crustacean diversity discovered in northern freshwater ecosystems
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.
Mar 02, 2012 |
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Scientists uncover an unhealthy herds hypothesis
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 ...
Jun 23, 2011 |
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Aquatic carnivorous plants with ultra-fast traps studied
How do Utricularia, aquatic carnivorous plants commonly found in marshes, manage to capture their preys in less than a millisecond? A team of French physicists from the Laboratoire Interdisciplinaire de Physique ...
Feb 16, 2011 |
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Animal with the most genes? A tiny crustacean: First crustacean genome sequenced
Complexity ever in the eye of its beholders, the animal with the most genes -- about 31,000 -- is the near-microscopic freshwater crustacean Daphnia pulex, or water flea. By comparison, humans have about ...
Feb 03, 2011 |
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Forget the Coppertone: Water fleas in mountain ponds can handle UV rays
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 ...
Oct 13, 2010 |
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Fertilizer chemicals linked to animal developmental woes
Fertilizer chemicals may pose a bigger hazard to the environment - specifically to creatures that live in water - than originally foreseen, according to new research from North Carolina State University toxicologists.
Aug 27, 2010 |
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Study shows that hitchhiking bacteria can go against the flow
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 ...
Aug 09, 2010 |
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Epidemic this year? Check the lake's shape
Of all the things that might control the onset of disease epidemics in Michigan lakes, the shape of the lakes' bottoms might seem unlikely. But that is precisely the case, and a new BioScience report by sci ...
May 05, 2010 |
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Large caps this spring's must-have for water fleas
It remains one of the unresolved mysteries of the animal world: why do females change the way they look each season while males look the same all year round? Researchers at the University of Gothenburg, Sweden, ...
May 03, 2010 |
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Introns: A mystery renewed
The sequences of nonsense DNA that interrupt genes could be far more important to the evolution of genomes than previously thought, according to a recent Science report by Indiana University Bloomington and ...
Dec 10, 2009 |
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UW-Madison undergraduates make unwelcome discovery in Lake Mendota
(PhysOrg.com) -- On Sept. 11, a standard cruise on Lake Mendota's University Bay began for students in University of Wisconsin-Madison's Zoology 315, a course that introduces them to the study of lakes. With the sampling ...
Sep 16, 2009 |
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Jurassic Park from a Swiss lake?
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 ...
Mar 12, 2009 |
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