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Current Fish News and Events, Fish News Articles.
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Ancient origins of viruses discovered
Research published today in Nature has found that many of the viruses infecting us today have ancient evolutionary histories that date back to the first vertebrates and perhaps the first animals in existence. (2018-04-04)

Rare coastal martens under high risk of extinction in coming decades
The coastal marten, a small but fierce forest predator, is at a high risk for extinction in Oregon and northern California in the next 30 years due to threats from human activities. (2018-04-04)

Herring larvae could benefit from an acidifying ocean
Excess CO2 in the atmosphere is making the oceans more acidic. Some studies show that's bad news for fish, including commercially important species. But a new study shows that herring might be able to tolerate this change. (2018-03-29)

Dolphins tear up nets as fish numbers fall
Fishing nets suffer six times more damage when dolphins are around - and overfishing is forcing dolphins and fishermen ever closer together, new research shows. (2018-03-29)

Walleye fish populations are in decline
Walleye, an iconic native fish species in Wisconsin, the upper Midwest and Canada, are in decline in northern Wisconsin lakes, according to a study published this week. It now takes 1.5 times longer to produce the same amount of walleye as it did in 1990. (2018-03-29)

Inherent feminizing effect of germ cells: New insights into sex determination
Germ cells have long been recognized as the only cells that can transfer genetic materials to the next generation via the sperm or egg. However, recent analyses in medaka (teleost fish) revealed another essential role of germ cells -- feminizing the gonads. Researchers showed the feminizing effect of germ cells occurs in parallel with other reproductive elements. Germ cells in medaka may have a potential to feminize gonads at the moment they have developed. (2018-03-29)

Catching the right fish
ETH researchers have developed a method to examine millions of potential self-produced drug candidates in one go. (2018-03-28)

Gene responsible for electric fish 'spark' found in South American ghost knifefish
Unique genetic re-wiring of a sodium channel explains how a family of electric fish can generate the highest frequency of electrical discharge seen in any animal. In a study publishing 27 March in the open access journal PLOS Biology researchers Ammon Thompson, Daniel Infield and colleagues at the University of Texas, Austin, University of Iowa, and Indiana University Bloomington show that this evolutionarily modified sodium channel could contribute to the electric organ's high-frequency firing. (2018-03-27)

Important development could reduce numbers of fish required in toxicology research
Scientists at the University of Plymouth, working in partnership with AstraZeneca, have developed a new method which could help assess the effects of chemicals on digestive systems. (2018-03-26)

How did the guppy cross the ocean?: An unexpected fish appears on a volcanic archipelago
To the surprise of the scientists, populations of a South American guppy were spotted at the Fernando de Noronha archipelago, a volcanic island in the South Atlantic. Even if being easily adaptable fishes, it was unclear how a small freshwater species had managed to cross the ocean and populate the archipelago. In an article published in the open-access journal ZooKeys, researchers suggest that the US military in WWII may be behind the phenomenon. (2018-03-26)

Monitor climate change, not predators, to protect lake diversity: Study
Climate change and other environmental factors are more threatening to fish diversity than predators, according to new research from the University of Guelph. It is a surprising and important finding, as humans rely upon freshwater lakes for more than one-fifth of their protein needs worldwide, says lead author Prof. Andrew MacDougall in U of G's Department of Integrative Biology. (2018-03-23)

Sweet surprise
Mexican cavefish have insulin resistance, a hallmark of many human metabolic disorders and a precursor to type 2 diabetes that can lead to an overworked pancreas, excess fat storage and chronically elevated blood sugar. Despite dysregulated blood sugar, the fish don't suffer the same health consequences people do. Study offers a fresh opportunity to understand how animals thrive with traits that sicken humans and could point the way to new interventions for disease. (2018-03-21)

Fish accounted for surprisingly large part of the Stone Age diet
New research at Lund University in Sweden can now show what Stone Age people actually ate in southern Scandinavia 10 000 years ago. The importance of fish in the diet has proven to be greater than expected. So, if you want to follow a Paleo diet -- you should quite simply eat a lot of fish. (2018-03-19)

Genetic analysis uncovers the evolutionary origin of vertebrate limbs
Fish, mice and likely all modern-day vertebrates share genetic elements first used to develop the unpaired dorsal fin in ancient fish. They later copied these elements to produce paired appendages, like pelvic and pectoral fins, arms and legs. (2018-03-19)

Ocean acidification: Herring could benefit from an altered food chain
Many studies have shown that larvae of various fish species can be negatively affected by ocean acidification. Acidification is caused by large amounts of carbon dioxide (CO2) entering the seawater from the atmosphere. But CO2 can also influence the food supply for the fish larvae. Researchers from the GEOMAR Helmholtz Centre for Ocean Research Kiel investigated how the combination of these effects influences herring larvae. Their results have been published today in the international journal Nature Ecology and Evolution. (2018-03-19)

Fighting illegal fishing
Researchers explore an alternative pathway to fast-tracking the global recovery of fisheries (2018-03-19)

Experience trumps youth among jumping fish
Tiny jumping fish can leap further as they get older, new research shows. (2018-03-16)

Reefs help protect vulnerable Caribbean fish from climate change
New research from UBC's Institute for the Oceans and Fisheries suggests that larger reef areas may help protect the Caribbean's coral reef fish communities from the impacts of ocean warming. (2018-03-16)

Fish the primary source of nutrition in medieval Northern Ostrobothnia
Researchers investigated the diet of people buried in the Ii Hamina, Northern Finland, cemetery from the 15th to the 17th centuries by analysing isotopes in the bones of the deceased. Isotopes preserve information on the various nutrient sources used by humans during their lifetime. A study published in the Environmental Archaeology journal reveals that the dominant protein source was small fish, such as roach or Baltic herring. (2018-03-16)

Little creek, big impact
A small sliver of wildness is having a big impact on the birds, fish and wildlife near UC Davis. Birds at Putah Creek have more than doubled since water was restored to the creek in 2000. (2018-03-15)

Reducing collateral damage
A study finds that ending overfishing would stop the population declines of endangered bycatch species about half the time (2018-03-15)

Breeding trouble: Meta-analysis identifies fishy issues with captive stocks
A meta-analysis has found patterns that may be jeopardising the long-term success of worldwide animal breeding programs, which increasingly act as an insurance against extinction in conservation, and for food security. Captive-born animals had, on average, almost half the odds of reproductive success compared to their wild-born counterparts in captivity; in aquaculture, the effects were particularly pronounced. The Sydney-based scientists were surprised by how universal the patterns were across the animal kingdom. (2018-03-13)

Study says Mekong River dams could disrupt lives, environment
The Mekong River traverses six Southeast Asian countries and supports the livelihoods of millions of people. New efforts to provide hydroelectric power to a growing and modernizing population include more than eight proposed main-stem dams and 60 or more existing tributary dams in the lower Mekong basin. A new article from University of Illinois and Iowa State University scientists lays out what dam construction could mean for residents and the environment in the region. (2018-03-08)

Fish team up for more food
A tiny striped fish called Neolamprologus obscurus only found in Lake Tanganyika in Zambia excavates stones to create shelter and increase the abundance of food for all fish in the group. Led by Hirokazu Tanaka of the University of Bern in Switzerland and the Osaka City University in Japan, this study is the first to document how team work in fish helps them to acquire more food. The research is published in Springer's journal Behavioral Ecology and Sociobiology. (2018-03-06)

No fish story! Research finds marine reserves sustain broader fishing efforts
In their examination of marine reserves, also known as marine protected areas or MPAs, around coral reefs in the Philippines, Robert Fidler and Ralph Turingan found evidence that MPAs helped to produce and maintain the more desirable, large-bodied and older fish within populations that have been fished by local fishermen for centuries. (2018-03-06)

Staying clean keeps seafish smart
'Vet' service provided by smaller fish is key to keeping coral reefs healthy, a Canadian study finds. (2018-03-06)

A leopard may not change its spots but venomous creatures change their venom recipe often
For a long time scientists believed that an animal's venom was consistent over time. However, through a close study of sea anemones, Dr. Yehu Moran of Hebrew University found that animals change their venom several times over the course of a lifetime, adapting the potency and makeup of their venom to suit changing predators and aquatic environments. (2018-03-05)

Deep-sea fish choose habitat according to genotype, new research says
Scientists have found evidence of natural selection in a deep-sea fish species adapting to the depth of ocean that it inhabits. (2018-03-05)

Fish' 'super power' may offer clues about biodiversity evolution
A group of international scientists, including a University of Central Florida biologist, recently discovered that a species of fish living in the north Atlantic Ocean has an ability to adapt to changing environmental conditions that are linked to the depth of its watery habitat. The unknown mechanism, which gives the roundnose grenadier its 'super power,' appears to be coded into the species' genetics. (2018-03-05)

Fish oil and probiotic supplements in pregnancy may reduce risk of childhood allergies
Women who take fish oil supplements and probiotics in later pregnancy may reduce their child's risk of food allergy and eczema, according to new research. (2018-02-28)

To build up mussels, you need to know your fish
Times are tough for 31 of Michigan's 45 varieties of freshwater mussels. Sporting evocative names like wavy-rayed lampmussel and round pigtoe, these residents of the state's rivers are imperiled by habitat disruption and pollution and are also threatened by climate change. Michigan State University scientists' recommendation to figure out the best places to focus conservation efforts: Worry about fish. (2018-02-27)

Largest Chinook salmon disappearing from West Coast
The largest and oldest Chinook salmon -- fish also known as 'kings' and prized for their exceptional size -- have mostly disappeared along the West Coast, according to a new University of Washington-led study. (2018-02-27)

When every fish counts
Genetic analysis by UC Davis showed about one-third of endangered delta smelt were misidentified in surveys of the Yolo Bypass. Their study found that genetic tools can be a powerful complement to visual identification of endangered fish. (2018-02-22)

The Australian government's plan for the biocontrol of the common carp presents several risks
Belgian, English and Australian scientists are calling on the Australian authorities to review their decision to introduce the carp herpes virus as a way to combat the common carp having colonised the country's rivers. In a letter published in the journal Science, they not only believe that this measure will be ineffective but that it also represents a risk to ecosystems. (2018-02-22)

Green toads with multiple genomes have ancestors that are only distantly related
Dr. Matthias Stoeck from the Leibniz-Institute of Freshwater Ecology and Inland Fisheries (IGB) and researchers from the University of Lausanne (Switzerland) and the Helmholtz-Centre for Environmental Research (UFZ) have just published an extensive phylogenetic tree for the Eurasian green toads. This phylogenetic tree shows that polyploid species are hybrids and only descend from parental species with a very high degree of genetic divergence. (2018-02-20)

Dispersal of fish eggs by water birds -- just a myth?
How do fish end up in isolated bodies of water when they can't swim there themselves? For centuries, researchers have assumed that water birds transfer fish eggs into these waters -- however, a systematic literature review by researchers at the University of Basel has shown that there is no evidence of this to date. (2018-02-19)

Newly-hatched salmon use geomagnetic field to learn which way is up
Researchers who confirmed in recent years that salmon use the Earth's geomagnetic field to guide their long-distance migrations have found that the fish also use the field for a much simpler and smaller-scale migration: When the young emerge from gravel nests to reach surface waters. (2018-02-16)

High levels of microplastics found in Northwest Atlantic fish
A new study finds 73 percent of mesopelagic fish caught in the Northwest Atlantic had microplastics in their stomachs -- one of the highest levels globally. Typically living at depths of 200-1,000 meters, these fish could spread microplastic pollution throughout the marine ecosystem, by carrying microplastics from the surface down to deeper waters. They are also prey for fish eaten by humans, meaning that microplastics could indirectly contaminate our food supply. (2018-02-16)

More squid, less fish: North Pacific seabirds alter their prey preferences
Over the last 125 years, and particularly after an uptick in industrial fishing since 1950, North Pacific seabirds -- typically fish consumers -- have shifted their prey preferences, a new study reports; they are eating lower on the food chain, consuming more squid. (2018-02-14)

Salmon face double whammy from toxic stormwater
WSU researchers have determined that coho salmon that survive polluted stormwater are still at risk. Experiments on both larval zebrafish, a model for salmon, and actual coho salmon showed that toxic runoff can damage hair-like sensors the fish use to find food, sense predators, and find their way in the current. (2018-02-12)

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