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Zebra in Biological News

New map outlines risk of zebra mussel invasion

CORVALLIS, Ore. The spread of two invasive alien freshwater mussel species the zebra mussel and the quagga mussel appears to be controlled in part by calcium levels in streams and lakes and a new risk assessment based on water chemistry suggests the Great Plains and American Southwest could be ...

New national map shows relative risk for zebra and quagga mussel invasion

There is considerable interest in determining the range of habitats an invasive alien species could possibly reach. Since its discovery in the Great Lakes, the zebra mussel (Dreissena polymorpha) has spread rapidly throughout waterways in the eastern US, negatively impacting ecosystems and infrast...

The sound of light: Innovative technology shatters the barriers of modern light microscopy

...oken through this barrier and rendered three-dimensional images through at least six millimeters of tissue, allowing whole-body visualization of adult zebra fish. To achieve this feat, Prof. Ntziachristos and his team made light audible. They illuminated the fish from multiple angles using flashes of la...

Researchers see evidence of memory in the songbird brain

... CHAMPAIGN, Ill. When a zebra finch hears a new song from a member of its own species, the experience changes gene expression in its brain in unexpected ways, researchers report. T...

Zebra mussels hang on while quagga mussels take over

... MADISON The zebra mussels that have wreaked ecological havoc on the ...being replaced by a cousin, the quagga mussel. But zebra mussels still dominate in fast-moving streams and ...he cousin species are different in many ways, too. zebra mussels prefer to attach to a hard surface, while ...

Why the thumb of the right hand is on the left hand side

...a Aanstad. In her research work she focuses on the zebra danio or zebra fish. Due to the short developmental cycle, the sc... Francisco, U.S., Pia Aanstad discovered a mutated zebra fish whose Hedgehog signaling pathway was disrupte...

Songbird study from CSHL, CCNY provides concrete measure of biology's impact on culture

...been performed among a species of songbirds called zebra finches. The study, which will appear online ahea...w languages may evolve. The study confirms that zebra finches raised in complete isolation do not sing t...eir song into conformity with those of "wild-type" zebra finches, i.e., those raised under normal cultural ...

CCNY, CSHL biologists find birdsong of isolates reverts to norm over several generations

...ring Harbor Laboratory (CSHL) have discovered that zebra finches raised in isolation will, over several gen...or her dissertation at CCNY, first generation male zebra finches raised in isolation produced an unstructur...tutor-pupil" relationship with a new generation of zebra finches that imitated their tutors' songs, but cha...

North America works to halt invasive species

...ses and the environmental impact caused by invasive species exceed $100 billion dollars annually in the United States alone. An example of this is the zebra mussel, which has caused nearly $1 billion in damages, according to a New York Sea Grant report. In southwest Mexico, the unintentional introductio...

Fly like a bird through boom and bust

...ic, economic and ecological change. Studies of key bird species, such as zebra finches, pelicans and woodswallows show how species have been shaped by evo...ive, Manufacturing, Materials and Minerals, Steve Morton, explains that the zebra Finch,or 'little Aussie battler', is thriving in some of Australia's harshe...

DNA evidence is in, newly discovered species of fish dubbed H. psychedelica

... "Psychedelica" seems the perfect name for a species of fish that is a wild swirl of tan and peach zebra stripes and behaves in ways contrary to its brethren. So says University of Washington's Ted Pietsch, who is the first to describe the new species in ...

Practice as well as sleep may help birds learn new songs

...t in this week's issue of Nature that when young zebra finches listen to an adult tutor's song and then p... was able, for the first time, to look at juvenile zebra finches. Using microelectrodes, the team observed ...nal activity during sleep in a region of the young zebra finch brain involved in singingthe acropalium (RA)...

Social interactions can alter gene expression in the brain, and vice versa

...newly sequenced genomes of several social animals, including honey bees and zebra finches, and new technologies such as microarrays (which allow researchers ...es found that expression of a specific gene increases in the forebrain of a zebra finch or canary just after it hears a new song from a male of the same spec...

Individuals vary their immune response according to age, sex and the costs

...James Dale, and Tony Williams asked when they examined how a simple immune response varied at different life stages across the life-span of individual zebra finches ( Taeniopygia guttata ), in a study published in the September issue of the American Naturalist . When transitioning from nest-bound juve...

Biological invasions increasing due to freshwater impoundments, says CU-Boulder study

...e researchers looked at invaders like the Eurasian zebra mussel, the Eurasian water plant known as watermil... Zanden of the University of Wisconsin-Madison. zebra mussels recently jumped to reservoirs in the West,...e between "uninvaded" lakes and lakes inhabited by zebra mussels, increasing the number of natural lakes co...

Researchers devise means to create blood by identifying earliest stem cells

...itor blood stems cells to follow their development. The scientists suspected they existed in humans, however, because they have been found in mice and zebra fish. To find the blood stem cell, Zambidis' team grew human embryonic stem cells in culture and fed them growth factors over 20 days. Each time th...

Zebra Technologies Enters Into Revolving Credit Agreement to Support Company Growth

...five-year, $100 million revolving credit facility. zebra will be able to draw upon the credit facility for ...re Wells Fargo Bank, N.A. and RBS Citizens, N.A. zebra Technologies Corporation helps companies identify,... Fortune 500 companies use innovative and reliable zebra printers, supplies, RFID products and software to ...

Songbirds may hold key to advances in treatment of brain degeneration

..., but not all, of the multiple actions of estrogens on the brain," Saldanha says. Saldanha is hoping to unlock these mysteries further by exploring zebra finchesvocal songbirds that use their song as a mating call. Among these birds, the males sing, but females can't. Male songbirds will learn their son...

Consortium develops new method to manipulate genetic material

.... "Recent work has shown that ZFNs can alter genes with high efficiency in cells from plants or model organisms like fruit flies, roundworms, and zebra fish, and in human cells," said J. Keith Joung, M.D., Ph.D., assistant professor of pathology at Harvard Medical School and director of the Molecular ...

Study of marine snail leads to new insights into long-term memory

... The marine snail is native to California, living in tidal waters off the coast. Glanzman is also studying learning at the synaptic level in the zebra fish. As a graduate student at Stanford University, Glanzman began studying cognitive psychology and psycholinguistics but "kept getting more an...

New ballast treatment could protect Great Lakes fish

...rse. "Ships unload their ballast water from all over the world, and with it all kinds of exotic, invasive species, from viruses and bacteria to the zebra mussel," said Hand. It's unfair to point the finger only at ocean-going ships, says Hand, a devoted angler and boat owner himself. All boaters shou...

Microbial stowaways: Are ships spreading disease?

...and plants have been taken to new environments and become invasive, threatening the survival of local species; some fundamentally alter the ecosystem. zebra mussels were introduced in North America and the comb jelly in the Black Sea and both have had enormous ecological and economic impacts For more th...

A Great Lakes mystery: The case of the disappearing species

...l Research Laboratory. The spread of invasive zebra and quagga mussels - voracious filter feeders with... by some researchers that Diporeia and/or invasive zebra and quagga mussels may be capable of bioaccumulati...t decision we make could be counterproductive." zebra and quagga mussels were almost certainly spread to...

American Chemical Society’s Weekly PressPac -- May 7, 2008

... of merchant ships. These so-called invasive species, such as the notorious zebra mussel, devastate native organisms and infrastructure and cost taxpayers bi...th little or no cargo. They dump the water at their destination along with zebra mussels, Asian clams and other organisms that may pose environmental risks....

Leading pediatrician addresses the future of children's health

...tyles -- in terms of food intake and environmental factors, may contribute or help prevent certain diseases, explains Dr. Gitlin. Dr. Gitlin uses zebra fish to illustrate this theory with a chemical genetic screen to identify small molecules and note their influence on nutrient metabolism. When we thi...

U-M 'ballast-free ship' could cut costs while blocking aquatic invaders

...non-native aquatic species have been identified in the Great Lakes, and ballast water is blamed for the introduction of most---including the notorious zebra and quagga mussels and two species of gobies. This week, the U.S. Saint Lawrence Seaway Development Corp. will implement new rules designed to redu...

Plant reflections may be key to early detection of treatment needs

...s. We are using it now to do early detection of zebra chip in potatoes and cotton root rot, and also loo... visual symptoms of stress in the plants to detect zebra chip, a disease that has no treatment, and determi...e how it will be after frying, Nansen said. The zebra chip effect causes the potato to turn brown after ...

Key found to moonlight romance

...on appears lost to us, he went on to explain. They play important roles in regulating the body-clocks of many species, from corals to fruit flies, to zebra fish and mice. The proteins they produce are similar to those in humans and other mammals, though they appear to function more like those in the fruit...

Interaction of just 2 genes governs coloration patterns in mice

...t of their mainland brethren. "In nature there is a tremendous amount of variation in color patterns among organisms, ranging from leopard spots to zebra stripes, that help individuals survive," says Steiner, a postdoctoral researcher in UCSD's Division of Biological Sciences. "However, we know surprisi...

ASU research shows connection between testosterone, dietary antioxidants and bird coloration

...all College in Pennsylvania, focused their work on zebra finches, a common domesticated pet bird originally...irds’ colors and health. “In the case of the zebra finch, the cost is in the pigments – having enough...carotenoids and immune state in 35 male and female zebra finches. They surprisingly found that when they ad...

Massive herds of animals found to still exist in Southern Sudan

...e of the Nile were also significantly reduced. “We did not observe a single zebra during the systematic survey in Boma, where 29,000 were seen in the early ’... the WCS Southern Sudan Country Program, did finally sight a group of three zebra moving with the white-eared kob migration in Boma National Park. The team a...

Bird sex is something else

...old’s University of California, Los Angeles laboratory used RNA microarray analysis for their dosage compensation study. The team sampled chickens and zebra finches, and compared the results with data from humans and mice. In several types of finch and embryonic chicken brain tissue, Z chromosome genes wer...

Reversing cancer cells to normal cells

...tatic melanoma cells back to normal-like skin cells - by exposing the tumor cells to the embryonic microenvironment of human embryonic stem cells, the zebra fish and the chick embryo. Dr. Hendrix’s plenary lecture on April 29 is a highlight of the scientific program of the American Association of An...

Researchers to study why dead zone returned to Lake Erie

...e three main culprits and the relationships among them: excess phosphorous; zebra mussels; and global warming. Of the three causes, nitrogen from farm r...umed by bacteria, which consumes oxygen. The second theory is that the zebra mussels may shunt the oxygen-consuming organic matter from the near shore t...

Tarantulas produce silk from their feet

...irst place. Adam Summers, a UC Irvine professor of ecology and evolutionary biology, was among the team of scientists who made the discovery using zebra tarantulas from Costa Rica. The team found that the tarantulas secrete silk from spigots on their legs, allowing them to better cling to surfaces. Unt...

Zebra finch males prefer females with exaggerated maternal traits

...inting itself could not give rise to preferences for novel, exaggerated traits. In their new work, the researchers tested the sexual preferences of zebra finch males that were raised by white parents differing in beak color. For one group of males, the researchers painted the beak color of the mother or...

The shape of life: research sheds light on how cells take shape

...de of cells. As microtubules multiply, they form patterns that can be seen by the naked eye. The pattern is a series of waves that look a bit like zebra stripes. How, Valles and Tang asked, do they form? Working with graduate students Yifeng Liu and Yongxing Guo, Valles and Tang grew their own micr...

'Biobullets' fight harmful mussels

...sules, which contain toxins that dissolve within a zebra mussel's digestive tract, offer a safe and cost-ef...apsules about the size of the algae particles that zebra mussels feed on. Once ingested, the "biobullets" s...r mollusks. Unlike other methods used to eradicate zebra mussels, such as chlorine, "biobullets" pose littl...

Zebra finches remember songs dad sang

...of speech." Vicario, Phan and Pytte worked with zebra finches, tiny songbirds native to Australia and fa...ted in the paper in Vicario's lab, where he raises zebra finches, Bengalese finches and canaries. The father contributes equally to childcare in zebra finch families and does all the singing, Vicario s...

Waking a sleeping virus

... the virus brings along as it infects human cells. zebra is essential to switching the virus from its laten... new host cells. Those have to be switched on, and zebra functions as the switch which turns the cell into ...mmune deficiencies. Researchers have focused on zebra because of its ability to activate so many genes. ...
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