Latest Daphnia Stories
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 Daphnia water fleas that dominate these ecosystems.
Daphnia is a genus of small, planktonic crustaceans, commonly called 'water fleas' because of their jumpy swimming style and their size (between 0.2 and 5 mm).
Environmental change is the selective force that preserves adaptive traits in organisms and is a primary driver of evolution.
When battling a deadly parasite epidemic, less resistance can sometimes be better than more, a new study suggests.
When it comes to battling a deadly parasite epidemic, it may be better not to fight it. A new study of freshwater zooplankton suggests less is more when it comes to evolving against a parasitic epidemic.
When battling an epidemic of a deadly parasite, less resistance can sometimes be better than more, a new study suggests.
Unprecedented algae growth in some lakes could be linked to the decline of water calcium levels and the subsequent loss of an important algae-grazing organism that helps keep blooms at bay.
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.
Researchers from Osaka University and the National Institute for Basic Biology, Japan, have found a highly significant connection between the molecular mechanisms underlying genetic and environmental sex determination.
There are many different kinds of crustaceans, ranging from the shellfish Swedish people eat at traditional crayfish parties every August to tiny relatives found in their millions in both freshwater and saltwater.
- A pivoted catch designed to fall into a notch on a ratchet wheel so as to allow movement in only one direction (e.g. on a windlass or in a clock mechanism), or alternatively to move the wheel in one direction.