Why fish look down when they swim
Just as you might look down at the sidewalk as you walk, fish look downward when they swim, a new study by a Northwestern University-led international collaboration has confirmed......»»
A mathematical model connects the evolution of chickens, fish and frogs
One of the most enduring, basic questions of life is: How does it happen? For instance, in human development, how do cells self-organize into skin, muscles or bones? How do they form a brain, a finger, a spine?.....»»
Identifying the fish species present in a river based on traces of their DNA
As they swim around, fish leave DNA fragments behind them, for example via their skin or their excrements. Once collected and analyzed, these indicators allow scientists to determine all the species present in the environment. What's more, the method.....»»
Bird feeding may give humans something to chirp about
Associate professor in the Department of Fish and Wildlife Conservation at Virginia Tech, Ashley Dayer is the lead author of an article published in People and Nature that argues not only for the acknowledgment of the activity's benefit to humans, bu.....»»
Scientists navigate uncharted waters in fish immunology research
Upon infection or immunization, all jawed vertebrate species generate proteins called antibodies that bind and neutralize pathogens. Strong and long-lasting antibody responses in warm-blooded species such as mammals are produced in secondary lymphoid.....»»
Global climate change drives fish fitness zones in typical marine habitats, finds study
The tridentiger typically inhabits semi-saline and freshwater environments located in the tropical, subtropical, and temperate regions of the western Pacific Ocean. It occupies a crucial position in the food chain, making it ecologically important. A.....»»
Scientists raise alarm as bacteria are linked to mass death of sea sponges weakened by warming Mediterranean
Vibrio bacteria, named for their vibrating swimming motion, span approximately 150 known species. Most Vibrio live in brackish or salt water, either swimming free or living as pathogens or symbionts in fish, crustaceans, mollusks, and corals. Because.....»»
Scientists determine how to properly feed rainbow trout
Scientists from the RUDN University and colleagues from Iran have determined the optimal dosage of a popular dietary supplement for rainbow trout. Exceeding it not only negates a positive effect, but can cause harm to the health of the fish. Results.....»»
Improving our understanding of the effects of PFOS on fish
Two papers recently published in Environmental Toxicology and Chemistry have made important advancements toward understanding the effects of perfluorooctane sulfonate (PFOS) on aquatic life, especially fish. Zebrafish had been identified in a previou.....»»
Fish brains may provide insight into the molecular basis of decision-making
How do animals make decisions when faced with competing demands, and how have decision making processes evolved over time? In a recent publication in Biology Letters, Tina Barbasch, a postdoctoral researcher at the Carl R. Woese Institute for Genomic.....»»
Fish ecologist"s research indicates need to conserve iconic migratory snook in Mexico
Allison Pease grew up fascinated by river fish, spending countless summers in a mask beneath the surface of Texas creeks. Now a fish ecologist in the College of Agriculture, Food and Natural Resources at the University of Missouri, Pease studies the.....»»
Clonal fish: Same genes, same environment, different fitness levels
According to current knowledge, individuality is determined by either differences in genome or in the apparent environmental conditions. However, studies show, the paradigm of twin research is currently crumbling......»»
Stones inside fish ears mark time like tree rings. How they"re helping us learn about climate change
As a marine biologist, I've always found it fascinating to learn about how animals adapt to their habitat. But climate change has made it more important than ever—wild animals' futures may depend on how much we understand about them......»»
What kind of seafood is morally ethical to eat?
Do you like cod, shrimp, salmon, crab or pollock (also known as fish sticks)? Of course you do. Do you shop at Walmart, Costco, Kroger or Albertsons for fish? Who doesn't? Do you eat at one of the more than 400,000 restaurants supplied by food distri.....»»
Study reveals how shipwrecks are providing a refuge for marine life
An estimated 50,000 shipwrecks can be found around the UK's coastline and have been acting as a hidden refuge for fish, corals and other marine species in areas still open to destructive bottom towed fishing, a new study has shown......»»
Some species of angelfish may spend their whole lives swimming upside down
A multi-institutional team of oceanographers and marine biologists has found evidence showing that some deep-sea species of angelfish spend their entire lives swimming upside down. In their paper published in the Journal of Fish Biology, the group de.....»»
Thermal refuges help trout beat the heat in hot weather
What do fish do when the water gets too hot?.....»»
Q&A: To save the planet"s glaciers, human actions still matter, says scientist
Climate change is melting glaciers around the world. Vanishing ice means less water for the millions of people relying on it and threatens the habitats of species—from bacteria to plants and fish—that live in glacier-fed ecosystems......»»
Myths about plastic pollution are leading to public confusion: Here"s why
Does the prediction that there could be "more plastic than fish in the ocean by 2050" concern you? How about reports that "we eat a credit card's worth of plastic per week"? These are some of the "facts" about plastic that are cited by the media......»»
Half of tested caviar products from Europe are illegal, and some aren"t even caviar, finds study
Wild caviar, a pricey delicacy made from sturgeon eggs, has been illegal for decades since poaching brought the fish to the brink of extinction. Today, legal, internationally tradeable caviar can only come from farmed sturgeon, and there are strict r.....»»
"Fishing" chimpanzees found to enjoy termites as a seasonal treat
The discovery that chimpanzees use tools to fish for termites revolutionized our understanding of their abilities—but we still don't have crucial context to help us understand termite fishing and chimpanzee minds. Are chimpanzees fishing for a seas.....»»