(Phys.org)—A research team made up of members from China, the U.S. and France has found new evidence that overturns the notion that a species of ancient insects known as strashilids were parasites. Instead, as the team ...
The genetic toolkit that animals use to build fins and limbs is the same genetic toolkit that controls the development of part of the gill skeleton in sharks, according to research to be published in Proceedings of the National ...
Evolution
Mar 23, 2009
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1
(PhysOrg.com) -- "Psychedelica" seems the perfect name for a species of fish that is a wild swirl of tan and peach zebra stripes and behaves in ways contrary to its brethren. So says University of Washington's Ted Pietsch, ...
Feb 24, 2009
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1
Most animals and plants never fossilize. For those that do, it's usually only hard parts such as bones and shells that preserve. However, in some exceptional cases, soft tissues such as muscles and gills survive the fossilization ...
Paleontology & Fossils
Dec 14, 2023
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242
Microplastics—tiny particles generated as plastics weather and fragment—pose a growing threat to ecosystem and human health. A new laboratory study shows these threats extend beyond direct physical or chemical impacts, ...
Plants & Animals
Jan 23, 2023
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51
Gills are best known for helping most fish species breathe underwater. But less well known is the fact gills regulate the salt and pH balance of fishes' blood, a vital role played by the kidneys in other animals. Collectively ...
Evolution
Oct 19, 2022
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29
Five-hundred million years ago, it was relatively safe to go back in the water. That's because creatures of the deep had not yet evolved jaws. In a new pair of studies in eLife and Development, scientists reveal clues about ...
Evolution
Jun 28, 2022
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67
The emergence of jaws in primitive fish allowed vertebrates to become top predators. What is less appreciated is another evolutionary innovation that may have been just as important for the success of early vertebrates: the ...
Evolution
Sep 29, 2020
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172
Invasive green shore crabs can "eat" by absorbing nutrients across its gills—the first demonstration of this ability in crustaceans—scientists from the University of Alberta have found.
Plants & Animals
Dec 6, 2017
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108
A new study has revealed that gills originated much deeper in evolutionary history than previously believed. The findings support the idea that gills evolved before the last common ancestor of all vertebrates, helping facilitate ...
Archaeology
Feb 9, 2017
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