(Phys.org) —A team of researchers made up of one biologist and four mathematicians has found an example of natural selection providing an organism with optimal behavior. In their paper published in Proceedings of the National ...
(Phys.org) -- Military body armor and vehicle and aircraft frames could be transformed by incorporating the unique structure of the club-like arm of a crustacean that looks like an armored caterpillar, according to findings ...
Materials Science
Jun 7, 2012
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Any way you look at it -- by sheer weight, species diversity or population -- the hard-shelled, joint-legged creepy crawlies called arthropods dominate planet Earth. Because of their success and importance, scientists have ...
Plants & Animals
Feb 10, 2010
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0
(PhysOrg.com) -- Scientists have been studying how krill form into superswarms, which are among the largest gatherings of living creatures on Earth.
When it comes to a quick draw, few creatures outgun adult snapping shrimp (Alpheus heterochaelis). They stun passing fish and foes with a simple click of a spring-loaded claw, which squirts a high-speed jet that rips through ...
Plants & Animals
Feb 28, 2023
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174
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
From cloudy glasses to deposits in dishwashers—limescale is a ubiquitous problem. An international research collaboration led by two researchers at FAU has now investigated which substances could be added to dishwasher ...
Analytical Chemistry
Sep 6, 2022
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84
Researchers have identified a new species of Bathonymus, the famed genera of deep-sea isopods whose viral internet fame has made them the most famous aquatic crustaceans since Sebastian of "The Little Mermaid."
Plants & Animals
Aug 9, 2022
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1194
Trilobites, extinct marine arthropods that roamed the world's oceans from about 520 million years ago until they went extinct 250 million years ago at the end of the Permian period, may have grown in a similar fashion and ...
Paleontology & Fossils
Jul 25, 2022
0
308
Island foxes are masters of survival. Having lived and evolved on the windswept, rugged and relatively remote Channel Islands off the coast of California for thousands of years, the cat-sized canids have quite a few tricks ...
Plants & Animals
Mar 7, 2022
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83
Thylacocephala? Branchiopoda
Remipedia Cephalocarida Maxillopoda
Ostracoda
Malacostraca
Crustaceans (Crustacea) form a very large group of arthropods, usually treated as a subphylum, which includes such familiar animals as crabs, lobsters, crayfish, shrimp, krill and barnacles. The 50,000 described species range in size from Stygotantulus stocki at 0.1 mm (0.004 in), to the Japanese spider crab with a leg span of up to 12.5 ft (3.8 m) and a mass of 44 lb (20 kg). Like other arthropods, crustaceans have an exoskeleton, which they moult to grow. They are distinguished from other groups of arthropods, such as insects, myriapods and chelicerates, by the possession of biramous (two-parted) limbs, and by the nauplius form of the larvae.
Most crustaceans are free-living aquatic animals, but some are terrestrial (e.g. woodlice), some are parasitic (e.g. fish lice, tongue worms) and some are sessile (e.g. barnacles). The group has an extensive fossil record, reaching back to the Cambrian, and includes living fossils such as Triops cancriformis, which has existed apparently unchanged since the Triassic period. More than 10 million tons of crustaceans are produced by fishery or farming for human consumption, the majority of it being shrimps and prawns. Krill and copepods are not as widely fished, but may be the animals with the greatest biomass on the planet, and form a vital part of the food chain. The scientific study of crustaceans is known as carcinology (alternatively, malacostracology, crustaceology or crustalogy), and a scientist who works in carcinology is a carcinologist.
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