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Juvenile in Biological News

Technology improves salmon passage at hydropower dams

... survival rates An average of 76 percent of juvenile Chinook salmon that pass through the lower 100 ... 4,140 young salmon with a tag that's part of the juvenile Salmon Acoustic Telemetry System (JSATS). The ... 29, Session 2G: Solving Fish Passage Challenges. juvenile Salmon Acoustic Telemetry System (JSATS) Used to ...

Fossils suggest earlier land-water transition of tetrapod

... CT slices revealed that Clack had found the first juvenile forms of Ichthyostega. Previously known fossils ... weight-bearing, terrestrial locomotion than the juvenile morphology. It is possible that Ichthyostega came ... in Acanthostega "there is less change from the juvenile to the adult. Although Acanthostega appears to be ...

Practice as well as sleep may help birds learn new songs

... impacts learning," Margoliash said. "We looked at juvenile birds at the first moments of learning. We gained ... hypothesis for how this learning might happen. juvenile songbirds show a complex, sleep-dependent ... team was able, for the first time, to look at juvenile zebra finches. Using microelectrodes, the team ...

Shrimp trawling may boost mercury in red snapper, study suggests

... also may be raising the level of toxic mercury in juvenile snapper. "Our study demonstrates that mercury concentrations are elevated in juvenile red snapper in coastal areas where commercial ... Trawling and Habitat on Mercury Concentration in juvenile Red Snapper from the Northern Gulf of Mexico," ...

Salmon smolt survival similar in Columbia and Fraser rivers

... and British Columbia has found that survival of juvenile salmon and steelhead during their migration to ... the fish reach the ocean." Columbia River juvenile salmon can be stressed by navigating the series ... 36 years has centered on the causes of stress in juvenile and adult salmon and steelhead, and the impacts ...

Scientists achieve first tracking of salmon from headwaters in Rockies through Pacific to Alaska

... time they have tagged and directly tracked small juvenile Pacific salmon, from their release in freshwater ... 2006, researchers implanted the new tags in 1,000 juvenile Chinook salmon ( www.eol.org/taxa/17154704 ) ... The 1,000 tagged juvenile salmon were followed via an extensive network of ...

Research challenges conventional notions about salmon survival

... show the surprising result that the survival of juvenile salmon in two major west coast rivers was ... time they have tagged and directly tracked small juvenile Pacific salmon, from their release in freshwater ... implanted the new tags in roughly 1,000 juvenile steelhead ( www.eol.org/taxa/17050441 ) and ...

Similar survival rates for Pacific salmon in Fraser, Columbia Rivers raises new questions

... compared the survival rates of out-migrating, juvenile spring Chinook and steelhead salmon from two ... been available, the team electronically tagged juvenile salmon (smolts) and monitored their journey from ... small enough for scientists to implant them into juvenile salmon and track them as they migrate downstream. ...

Research expedition on corals and global warming: Aug. 17-26 in Puerto Rico

... and education project to grow the newborn juvenile corals for distribution to aquaria and to the ... next seven days, she will raise the newly formed juvenile corals in saltwater tanks on land. She then will ... first critical days," said Baums. Next, the juvenile corals in captivity will be subjected to a ...

Project succeeding to relocate Caspian terns

... Caspian terns in the world and to help protect juvenile salmon and steelhead in the Columbia River is ... cormorants annually consume more than 10 million juvenile salmon and steelhead migrating through the ... in one year, an estimated 10 percent of the juvenile population from throughout the entire Columbia ...

Can certain metals repel sharks from fishing gear?

... by NOAA scientists and colleagues on captive juvenile sandbar sharks showed the presence of an ... would be to conduct field trials. Brill says juvenile sandbar sharks were used in the study because ... at the Virginia Institute of Marine Science using juvenile sand sharks up to five years old caught in ...

Researcher provides tool to enable determination of age of anchovies with greater precision

... given the variability of stock replacement by juvenile fish, these being highly vulnerable to ... of when and how stock replacement by juvenile European anchovy in the Bay of Biscay occurs and ... using the soluble complex of calcium that both juvenile and adult anchovies deposit as a daily ring of ...

UBC scientist invokes future generations to save tuna populations from collapse

... and fish aggregating devices while trapping juvenile yellowfin as by-catch. WWF-Philippines ... catch of the Philippines purse-seine fleet are juvenile yellowfin by-catch. If allowed to grow to ... from developed nations in return for allowing the juvenile population to mature, everyone, including future ...

Learning from cod collapse to save tuna

... aggregating devices are resulting in significant juvenile bycatch, a severe threat to species like bigeye ... economy and impacts the species, said Ingles. If juvenile fish are allowed to mature, they would be worth ... than the $236 million currently derived from juvenile catch. New joint management ...

You don't call, you don't write: Connectivity in marine fish populations

... modeling, but very little empirical evidence. After about two weeks, juvenile clownfish find a comfortable-looking sea anemone, set up housekeeping, and ... the exact locations of both the natal anemone and the anemone in which the juvenile settled, dispersal was simply the distance between those two hosts. ...

Researchers describe protease inhibitor that may aid in diabetic retinopathy treatment

... complication of diabetes. The study, which was partly funded by the juvenile Diabetes Research Foundation (JDRF), is published in the February 2009 ... said Barbara Araneo, Director of Complications Research for the juvenile Diabetes Research Foundation. "While further studies are needed to ...

New scientific knowledge on juvenile diabetes

... in children who later progressed to type 1 diabetes, also known as juvenile diabetes. The alterations preceded the autoimmune response by months to ... Prediction and Prevention study) was launched in Finland, supported by the juvenile Diabetes Research Foundation International. Over a period of 14 years, ...

Ocean fish farming harms wild fish, study says

... a result. Larger numbers of lice are especially dire for salmon because juvenile salmon must transit coastal areas where salmon farms are located. juvenile pink and chum salmon (Pacific species) suffer most because they spend much ...

Sen. Byron Dorgan to be honored

... Grand Forks, North Dakota, July 2, 2008 Volunteers representing the juvenile Diabetes Research Foundation International (JDRF), the American Diabetes ... with diabetes. "I am deeply honored by this award from the juvenile Diabetes Research Foundation, and the other organizations represented here ...

February Geology and GSA Today media highlights

... grow in size, so does the shell, but only at the margins; therefore, the juvenile shell always remains visible at the tip of the adult one. Mart Mus et al. ... et al.'s finding shows that at least some small helcionellids represent juvenile (or maybe even larval) stages of species that reached a centimeter-scale ...

Where have all the lake eels gone? Queen's prof asks

... whether some lakes and rivers are better than others for re-stocking with juvenile eels, which chemicals are the bad actors and whether eels pose a hazard to ... since the mid 1980s there has been a spectacular drop in the numbers of juvenile eels migrating to Lake Ontario from the Sargasso Sea, and a corresponding ...

Fish farms drive wild salmon populations toward extinction

... and others showed that sea lice from fish farms can infect and kill juvenile wild salmon. This, however, is the first study to examine the ... small, thin-skinned, and vulnerable. In the Broughton Archipelago, the juvenile salmon must run an 80-kilometer gauntlet of fish farms before they reach ...

Biologists rediscover endangered frog population

... Research was the first to breed a mountain yellow-legged frog in captivity. That amphibian has recently morphed from a tadpole into a froglet, or juvenile frog. "Historically, scientists have had great difficulty breeding frogs in captivity," said Jeff Lemm, an animal research coordinator for the San ...

US-Mexico border wall could threaten wildlife species

... the low-flying pygmy owl made three-fourths of its flights below the height of the security wall, which is approximately four meters high, and that juvenile owls had lower colonization in areas of disturbance or areas with less vegetation. "Some of the potential damage to pygmy owls could be mitigated ...

Scientists are learning more about big birds from feathers

... collected after the winter thaw, then, had to have been recently dropped. In one study, DeWoody's team found that an area thought to have about 40 juvenile eagles living in it based on human observation actually had closer to 300. The work also helped researchers understand more about the roosting ...

Gene expression findings a step toward better classification and treatment of juvenile arthritis

... Scientists have discovered gene expression differences that could lead to better ways to classify, predict outcome, and treat juvenile idiopathic arthritis (JIA). Eventually such findings could enable doctors to target more aggressive treatment to children at risk of more severe ...

Corals stay close to home

... conserve and protect these remarkable sea creatures. However, the design of marine reserves requires knowledge of the distances moved by the mobile juvenile stage of corals so that the natural processes that maintain healthy populations can be encouraged. A recent study by Australian biologist Jim ...

Coral face 'a stormy future'

... event, some of these important species appear not to have recruited at all. "Healthy reefs usually have high numbers of coral recruits and juvenile corals, whereas degraded systems typically have far fewer young colonies." The concern is that if major storms and bleaching become more frequent ...

Geographic profiling applied to track hunting patterns of white sharks in South Africa

... display of power and acrobatic prowess, white sharks attack prey with a sudden vertical rush that propels them out of the water. "They hunt solitary juvenile Cape fur seals when light levels are low, stalking them from near the ocean floor to remain undetected, before launching a vertical attack," ...

Another JDRF partner moves research forward with collaboration agreement for diabetes treatment

... NEW YORK, June 18, 2009 The juvenile Diabetes Research Foundation said today that for the fourth time in 18 months, one of its biotech partners has signed a collaboration agreement with ...

Gear bans 'can help save reefs'

... nets didn't target as many key fish species as gill nets, traps, or spear guns, but were damaging both to corals directly and took large amounts of juvenile fish. "Where people really depend on reef resources, it may not be possible to permanently ban all of these types of gear. By creating temporary ...

Help for climate-stressed corals

... nets didn't target as many key fish species as gill nets, traps, or spear guns, but were damaging both to corals directly and took large amounts of juvenile fish. "Where people really depend on reef resources, it may not be possible to permanently ban all of these types of gear. By creating temporary ...

Fossil bone bed helps reconstruct life along California's ancient coastline

... by sharks like Carcharocles megalodon seems unlikely to have been the major source of the bone bed, the authors wrote. Because of few young or juvenile specimens, the team also discounted the hypothesis that this was a breeding ground for early seals such as Allodesmus. The absence of volcanic ash ...

Elevated water temperature and acidity boost growth of key sea star species: UBC researchers

... of Sciences . In the lab, UBC researchers led by Rebecca Gooding manipulated water temperatures and CO2 levels in sea water tanks containing juvenile Purple Ochre Sea Stars (Pisaster ochraceus), a species found along much of North America's Pacific Coast. An increase in temperature of just three ...

Yellowfin tuna biz concept a winner

... competition's High-Potential Venture category. His venture, Blue Ocean Aquaculture, focuses on the production and shipment of sustainably cultured juvenile yellowfin tuna for the billion-dollar global offshore aquaculture industry and the capture-based tuna aquaculture industry. Originally from Miami, ...

Study shows CGM devices also benefit people with type 1 diabetes

... goals can further benefit from using continuous glucose monitoring (CGM) devices, according to results of a major multi-center clinical trial by the juvenile Diabetes Research Foundation. Findings of the study were published online by the journal Diabetes Care , available at ....

Jeepers creepers: Climate change threatens endangered honeycreepers

... in, but they also had habitat that honeycreepers liked, wrote the authors. While birds in those areas find refuge from the diseases dispersing juvenile birds and adults that follow seasonal flowering of native plants to lower elevations are exposed to disease. "Unfortunately," said study ...

The life histories of the earliest land animals

... The fossil record usually shows what adult animals looked like. But the appearance and lifestyle of juvenile animals often differ dramatically from those of the adults. A classic example is provided by frogs and salamanders. New discoveries from Uppsala, ...

Early isolation linked to enhanced response to cocaine

... on the animal's response to cocaine. The study, Social Isolation During Perinatal Development Alters the Behavioral Response to Cocaine in juvenile Rats, was conducted by Natasha Lugo-Escobar, Nicole Carreras and Annabell C. Segarra, University of Puerto Rico, School of Medicine, Rio Piedras, PR. ...

Early isolation linked to enhanced response to cocaine

... on the animal's response to cocaine. The study, Social Isolation During Perinatal Development Alters the Behavioral Response to Cocaine in juvenile Rats, was conducted by Natasha Lugo-Escobar, Nicole Carreras and Annabell C. Segarra, University of Puerto Rico, School of Medicine, Rio Piedras, PR. ...
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