Senegal looks to aquaculture as fish stocks dwindle
The Senegalese town of Kayar sits on the doorstep of the vast Atlantic Ocean, but it is a farm located further inland that provides part of its fish production......»»
Study reveals biodiversity engine for fishes: Shifting water depth
Fish, the most biodiverse vertebrates in the animal kingdom, present evolutionary biologists a conundrum: The greatest species richness is found in the world's tropical waters, yet the fish groups that generate new species most rapidly inhabit colder.....»»
Significant alterations of intestinal symbiotic microbiota mediate changes in intestinal metabolism
As an effective method of preventing a wide range of bacterial diseases, vaccination plays a key role in aquaculture disease control, contributing to its environmental, social, and economic sustainability. In particular, vaccines based on inactivated.....»»
Research video shows sailfish"s point of view and reveals new hunting behavior
To say studying sailfish is challenging is an understatement. These fish, often described as the "fastest fish in the world," exhibit some remarkable traits as they make their way through the oceans in search of their next meal......»»
Who are the first ancestors of present-day fish?
What is the origin of the ancestors of present-day fish? What species evolved from them? A 50-year-old scientific controversy revolved around the question of which group, the "bony-tongues" or the "eels", was the oldest......»»
Fish don"t dither: A new study investigates danger-evasion tactics
Decisions are difficult. Humans often find themselves deliberating between multiple conflicting alternatives, or frustratingly fixated upon a single option. When faced with a threat, zebrafish larvae don't have that luxury. The direction they take to.....»»
Cockatoos know to bring along multiple tools when they fish for cashews
Goffin's cockatoos have been added to the short list of non-human animals that use and transport toolsets. In a study publishing in the journal Current Biology on February 10, researchers show that the cockatoos carry multiple tools to their worksite.....»»
Investors also suffer in unregulated competition for freely available resources, study finds
Without regulations for their use, the condition of freely accessible resources such as fish stocks, water or air can deteriorate dramatically. In economics, this is referred to as the "Tragedy of the Commons." In 2009, Elinor Ostrom became the first.....»»
Swiss native fish in troubled waters
More than half of Switzerland's native fish species are threatened with extinction or are already extinct within the country's waters, a new assessment showed Wednesday......»»
Using environmental DNA for to survey the populations of endangered species
Changes in river systems, overfishing and the appearance of new, invasive species can lead to a drastic decline in the number of native fish inhabiting aquatic ecosystems. In the Ashida river basin in Japan, the bitterling fish (Rhodeus atremius suig.....»»
Salmon deplete fat stores while stopped at dams, study shows
Restoration of the critically endangered Atlantic salmon is an important issue in the rivers of Maine. Dams on Maine rivers have long been known to impact fish populations, but a new study led by the University of Maine quantifying the time and energ.....»»
Team identifies a nutrient that cancer cells crave
Arginine is an amino acid naturally produced by our bodies and plentiful in the fish, meat, and nuts that we eat. But as recent research in Science Advances reveals, arginine is an essential nutrient for cancer cells too. And starving them of it coul.....»»
Estimating organic carbon stocks of mineral soils in Denmark: Impact of bulk density and content of rock fragments
Soil can store carbon. Therefore, there is also an increasing focus on soil organic carbon content and how to either increase or maintain it. This is because soil can also lose carbon in the form of climate gases from microbial decomposition, in whic.....»»
Fishing in synchrony brings mutual benefits for dolphins and people in Brazil, research shows
By working together, dolphins and net-casting fishers in Brazil each catch more fish, a rare example of an interaction by two top predators that is beneficial to both parties, researchers have concluded following 15 years of study of the practice......»»
Fish-on-Chips: An optofluidic platform to investigate the neural and chemosensory axes of zebrafish
Neuroscientists study chemosensory processing by establishing chemical cues and the corresponding behavioral responses to record large-scale neuronal activity. In a new report now published in Nature Communications, Samuel Sy and a team of scientists.....»»
China still wants to control Big Tech. It"s just pulling different strings
Investors have raced back into Chinese tech stocks this year, encouraged by an apparent truce in a two-year battle between some of the country's most powerful regulators and its biggest internet companies......»»
Study finds that eDNA can help detect rainbow smelt
Searun rainbow smelt—a culturally and ecologically valuable fish for New England anglers, consumers and marine ecosystems—is on the decline. Determining the extent of that decline, however, is difficult in Maine. Searun smelt can be easy to miss.....»»
Fish sensory organ key to improving navigational skills of underwater robots
Scientists, led by University of Bristol, have been studying a fish sensory organ to understand cues for collective behavior which could be employed on underwater robots......»»
Stress may trigger male crucian carp defense against predators
Only males among the fish species crucian carp have developed a strategy to protect themselves from hungry predators, according to a new study from Lund University in Sweden published in the journal Evolution. The explanation could lie in that the su.....»»
Wolves eliminate deer on Alaskan Island then quickly shift to eating sea otters, research finds
Wolves on an Alaskan island caused a deer population to plumet and switched to primarily eating sea otters in just a few years, a finding scientists at Oregon State University and the Alaska Department of Fish and Game believe is the first case of se.....»»
Virus plus microplastics equal double whammy for fish health
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, revealing that the presence.....»»