In new research, Arizona State University scientists and their colleagues investigated genetic changes occurring in a naturally isolated population of the water flea, Daphnia pulex. This tiny crustacean, barely visible to ...
Evolution
Jul 15, 2024
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298
For a beholder who is an evolutionary biologist, the eye is has long been a fascinating puzzle because of the many parts that must seamlessly work together for the whole to work properly. Biologists have addressed the question ...
Evolution
Nov 20, 2015
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1270
New research on a number of Canadian lakes show that historical acid deposits as a result of industry have greatly reduced calcium levels in the water - dramatically impacting populations of calcium-rich plankton such as ...
Ecology
Nov 18, 2014
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1
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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A common species of zooplankton—the smallest animals in the freshwater food web—can evolve genetic tolerance to moderate levels of road salt in as little as two and a half months, according to new research published online ...
Ecology
Jan 6, 2017
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508
Human actions are changing the environment at an unprecedented rate. Plant and animal populations must try to keep up with these human-accelerated changes, often by trying to rapidly evolve tolerance to changing conditions.
Plants & Animals
Feb 2, 2023
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65
For many, experience with Daphnia, commonly known as water fleas, ends in high school. The organism is often used for science experiments exploring water toxicity, because of its sensitivity to environmental factors. But ...
Biotechnology
May 5, 2017
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191
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 fundamental changes ...
Evolution
May 23, 2012
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Can environmental toxins disrupt circadian rhythms - the biological "clock" whose disturbance is linked to chronic inflammation and a host of human disorders? Research showing a link between circadian disruption and plankton ...
Ecology
Nov 3, 2017
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200
Look into any nutrient-rich pond almost anywhere in the world and you will find Daphnia pulex, a tiny crustacean (also called a water flea) that is a source of food for fish and fascination for scientists. A new study, reported ...
Ecology
Jul 19, 2016
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9
Daphnia are small, planktonic crustaceans, between 0.2 and 5 mm in length. Daphnia are members of the order Cladocera, and are one of the several small aquatic crustaceans commonly called water fleas because of their saltatory swimming style (although fleas are insects and thus only very distantly related). They live in various aquatic environments ranging from acidic swamps to freshwater lakes, ponds, streams and rivers.
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