This is the first known study to connect habitat with varying brain size in a single lake fish population. The finding may provide clues about how fish and other creatures will respond to mounting environmental stressors from pollution to climate change. Researchers say bigger brains contain more neurons, and more connections among them, that lend its owner cognitive and behavioural smarts that may help it adapt to new environments.
The escape response to evade perceived threats is a fundamental behavior seen throughout the animal kingdom, and laboratory studies have identified specialized neural circuits that control this behavior. To understand how these neural circuits operate in complex natural settings, researchers recorded and analyzed escape responses in wild coral reef fish. Their results show how a sequence of well-defined decision rules generates evasion behavior in a wide range of coral reef fish species.
A new monitoring project involving UCLA researchers and partners aims to take 'fake sushi' off Los Angeles diners' plates. The Los Angeles Seafood Monitoring Project team -- which includes university researchers, students, sushi restaurants and government regulators -- is working to reduce sushi fraud and the mislabeling of fish.
Two connected marine ecosystems -- the Eastern English Channel and Southern North Sea -- experienced big and opposite changes in their fish communities over a 30-year period, according to researchers who report their findings in Current Biology on Nov. 8. Rapid warming drove smaller ocean fishes to shift abruptly northward from one ecosystem to the other.
Scars left by orca attacks indicate that most victims are young whales on the first trip from breeding to feeding grounds. Increasing numbers of scars may mean that there are more orcas in the Southern Pacific, researchers say.
Even a Category 4 hurricane doesn't kill the mood for coastal fish -- and that's good news for all species, as well as for a multibillion-dollar recreational fishing industry. As extreme weather patterns threaten to bring more and larger storms to the Gulf Coast, new findings from the University of Texas at Austin's Marine Science Institute show some important fish species are able to continue spawning even in a severe storm.
In a new study published in Communications Biology, NYU Abu Dhabi Assistant Professor of Biology Shady Amin, along with Philippe Schmitt-Kopplin from the Helmholtz Center Munich, report that corals, though they are stationary organisms, can alter their surroundings by producing unique molecules that can help recruit healthy microbiomes and fight parasitic microbes.
Researchers from Scripps Institution of Oceanography at the University of California San Diego and the University of British Columbia found that even if fishers used the most efficient and sustainable known practices, they wouldn't generate enough revenue to maintain a living above poverty level.
Process waters from the seafood industry contain valuable nutrients, that could be used in food or aquaculture feed. But currently, these process waters are treated as waste. Now, a research project from Chalmers University of Technology, Sweden, shows the potential of recycling these nutrients back into the food chain.
With a growing world population and climate challenges that are causing agricultural areas to shrink, many are wondering where sustainable food will come from in the future. A professor of gastrophysics from the Department of Food Science at the University of Copenhagen and a chef offer a suggestion in a new research article: The cephalopod population (including squid, octopus and cuttlefish) in the oceans is growing and growing -- let's get better at cooking them so that many more people will want to eat them!