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Migration in Biological News

A genetic basis for schizophrenia

... role of Disc1 in development, particularly the migration of cells to their proper location in the brain ... cells and function properly. Disruption of cell migration can lead to inappropriate cell development and ... the maintenance of precursor pools, timing of migration onset and the induction of cell differentiation. ...

It's for the birds

... of information describing bird distributions, migration timing, and migration pathways and how they are changing," said Zelt. ... recently wrote to tell me she had transcribed a migration card on purple martins by American ornithologist ...

Compounds could be new class of cancer drugs

... of Nature Chemical Biology , block the invasive migration of breast cancer cells, supporting their further ... discovered that PLD was important to the invasive migration of breast cancer cells in culture using a genetic ... and they showed that they blocked the invasive migration behavior of three different breast cancer cell ...

Ancient African exodus mostly involved men, geneticists find

... humans left Africa over 60,000 years ago in a migration that many believe was responsible for nearly all ... populations, in which short distance migration is primarily by women and long distance migration primarily by men." ...

The Finnish Population Register Centre to Deploy Entrust EAC ePassport CA Solution

... selected to supply the CA software for Finland's migration to advanced second-generation ePassports based on ... With the European Union's June 2009 deadline for migration to the EAC standard looming, Finland's Population ... of EAC ePassports to its citizens. To support its migration to the new EAC ePassport CA solution, the Finnish ...

6,000km trip to reveal clues to ancient migration

... to play a key part in a 6000km trip following the migration route of ancient Pacific cultures. Drs Keith ... canoes - which attempts to re-trace the genuine migration route of the ancient Austronesians. The main ... domestic and commensal species linked with human migration - has gained international media attention. ...

Salmon smolt survival similar in Columbia and Fraser rivers

... of juvenile salmon and steelhead during their migration to the sea through two large Northwest rivers ... an impact on their ability to survive the entire migration and the transition into the ocean," Clements ... is: Is significant mortality during in-river migration natural? And if so, what proportion of the fish ...

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

... Alaska to California, several mysteries of fish migration and survival may soon start to unravel." In ... Census projects and all research about animal migration can profit from the technology that POST has now ... into account - and survival was greater during migration within the hydropower system than below the ...

Study of polar dinosaur migration questions whether dinosaurs were truly the first great migrators

... or latitudinal "sun line," as part of their migration and would travel as far as 30 degrees of ... Bell. Bell does not dispute the evidence of migration and points to discoveries of large bone beds as ... from the poles," he said. While this view of migration is feasible for some species of polar dinosaurs, ...

Sophisticated monitoring array to address mystery of uranium plume

... allow us to better understand the sources and migration behavior of uranium in the subsurface." The ... concentrations in groundwater, and uranium migration to the Columbia River. The Hanford IFRC ( ... The variability permits scientists to probe migration pathways through the subsurface and examine ...

Signals from the Atlantic salmon highway

... River have been detected so far along on their migration northward. The first data provided valuable ... a new opportunity to detect U.S. salmon on their migration to the Labrador Sea. Other NEFSC biologists have ... that many young salmon are surviving their migration north to feed and grow in waters of the Labrador ...

Leatherback turtles' newly discovered migration route may be roadmap to salvation

... There was one turtle that didn't follow the migration route to the South Pacific Gyre. Instead, it swam ... about the impact their new data about the migration routes could have on bolstering the leatherbacks' ... them to be effective. And because the turtles' migration route crosses international boundaries, it is ...

Y chromosome study sheds light on Athapaskan migration to southwest US

... North Americans offers new insights into the migration of a small group of Athapaskan natives from their ... reinforce the hypothesis that the Athapaskan migration involved a relatively small group that ... The only lasting evidence of the Athapaskan migration found so far is in their language and their ...

Leatherback turtles go with the flow

... from 2004 to 2007, showing their habits and migration routes in the Eastern Pacific over the course of ... to the physical forces of the ocean, as their migration routes were influenced by the ocean's currents. ... feat, and in charting the patterns, behaviors and migration paths of leatherback turtles, Block et al. shed ...

Killer whales, blind bats, discriminating dolphins, mating birds

... 10) ACOUSTIC TECHNIQUES FOR MONITORING BIRD migration Most bird migration occurs under the cover of darkness, and presently ... as they fly by night, researchers can develop migration maps for each species that depict the routes and ...

Flying off course

... vagrants from Asia here." Wrong way down the migration flyway The scientists suspect the cause is an ... from one generation to the next. This means that migration is the result of a genetic programme, through ... they fly the wrong way down the intercontinental migration flyway," says Robert Pfeifer, General Secretary ...

New research reveals shark superhighways and hotspots

... prey. However, new research suggests that shark migration is anything but random, and that these efficient ... to track scalloped hammerhead sharks along their migration routes in the tropical Eastern Pacific Ocean. ... and their colleagues continue to map out the migration routes and gathering sites of highly mobile ...

Mummy lice found in Peru may give new clues about human migration

... clues about a different sort of passage: the migration patterns of Americas earliest humans, a new ... said. We hope to be able to understand human migration patterns by investigating their parasites since ... he said. Being able to chart these early migration patterns would give insight into how these early ...

Stroke victims may benefit from stem cell transplants

... (BMSCs) transplantation. In both studies, the migration of chemically tagged transplanted stem cells were ... transplant. Cells started showing indications of migration as early as one or two weeks following ... of injection site but that the degree of migration was likely based on differences in each animals ...

Gene study supports single main migration across Bering Strait

... the first humans in the Americas came in a single migration or multiple waves from a single source, not in ... say the variant likely occurred shortly prior to migration to the Americas, or immediately afterwards. ... populations are genetically similar and what migration patterns might explain the similarities. For ...

Environmental setting of human migrations in the circum-Pacific Region

... Terrell of The Field Museum adds insight into the migration of anatomically modern humans out of Africa and ... and Holocene epochs. The initial out of Africa migration was thwarted by dramatic changes in both sea ... conditions amenable for a second pulse of human migration into North America across an ice-free coastal ...

Study shows how the zebrafish gets his stripe

... fish to generate two stripes. Then, whilst cell migration ceases in the neck region of the wild-type ... cell migration. Sdf is a known cell migration guidance molecule, with roles including regulating the migration of neurones in the fishs central nervous system ...

Neural stem cell study reveals mechanism that may play role in cancer

... have discovered a key mechanism of this migration one that may also play an important role in ... cell research. Scientists have known that migration of neurons depends in part on motors within the ... stem cell fibers. They have also known that this migration depends on receptors on the neurons surface that ...

Pig study sheds new light on the colonisation of Europe by early farmers

... pig remains. Its findings also suggest that the migration of an expanding Middle Eastern population, who ... ideas and cultural exchange, not with the direct migration of people. However, the discovery and analysis of ... in reconstructing early farming, ancient human migration and past trade and exchange networks around the ...

September Geology and GSA Today media highlights

... with archaeological data suggesting that a major migration from tropical east Africa to the Levant took ... presently hyper-arid Saharan-Arabian desert. This migration was dependent on the occurrence of wetter climate ... rainfall increase in the northern part of the migration corridor, including the Sinai-Negev land bridge ...

August 2009 Geology and GSA Today media highlights

... the copper-rich vapor formed at lower temperatures, possibly during migration of the original magmatic vapor. Paradox of late Paleozoic ... documenting local strontium isotope ratios and will be used to unravel the migration history to and from these ancient Maya cities. Natural and ...

Climate change could drive vast human migrations

... In Search of Shelter: Mapping the Effects of Climate Change on Human migration and Displacement, is based on a first-time global survey of environmental ... approaches are needed to address the threats that climate-related migration poses to human security and well-being," said coauthor Koko Warner, head ...

LSUHSC research describes function of key protein in cancer spread

... at a molecular level, the processes that regulate cell adhesion, migration and invasion," notes Dr. Worthylake. He and his colleagues studied a ... IQGAP1, is produced, it can weaken cell-to-cell contacts and promote cell migration and invasion processes that occur during tumor metastasis. The ...

NOAA researchers: Blue whales re-establishing former migration patterns

... Scientists have documented the first known migration of blue whales from the coast of California to areas off British Columbia ... off the coast of California, suggesting a re-establishment of a historical migration pattern. Researchers made this identification by comparing photographs ...

Older men more likely than women to die after pneumonia

... with certain gene variations associated with higher levels of macrophage migration inhibitory factor, an innate immune response regulator, were less likely to die following CAP. "Macrophage migration inhibitory factor is a molecule that plays an important role in ...

Stem cell focus for IBD wound healing

... stem cell marker and which plays a key role in cell proliferation and the migration of healthy cells to a damaged area to restore normal tissue. "CD24 is a ... level to discover the mechanisms by which it operates and encourages cell migration and other associated molecules that are co-expressed. They will then ...

Indigenous peoples at world summit to share climate change observations, coping techniques

... She coined the term "climigration" to describe forced, permanent migration of communities due to severe climate change impacts on infrastructure such ... be defined and protected internationally." "Climigration differs from migration caused by catastrophic environmental events such as hurricanes, where ...

New origin found for a critical immune response

... identified a particular protein, known as a chemokine, that stimulates the migration of activated dendritic cells from peripheral tissues to lymph nodes. The ... They found that mice without the Ccr2 chemokine receptor that controls the migration of inflammatory monocytes had much lower accumulation of monocyte-derived ...

Decline of shorebird linked to bait use of horseshoe crabs

... large numbers of red knots congregate in the bay during their northward migration where they gorge on horseshoe crab eggs in preparation for their continued migration to the Arctic. Concern over red knot populations led to restrictions ...

January GEOLOGY media highlights

... Valley caldera unrest from 1980 through early 2000. Pore-pressure migration along a normal-fault system resolved by time-repeated seismic tomography ... variations of Vp/Vs anomalies (4D variations), which accompany earthquake migration and precede large aftershocks. The Vp/Vs increase observed before the ...

Study shows California's autism increase not due to better counting, diagnosis

... born in 2000. Some have argued that this change could have been due to migration into California of families with autistic children, inclusion of children ... of all children ages two to 10 years old. The methodology eliminated migration as a potential cause of the increase in the number of autism cases. It ...

No place like home: New theory for how salmon, sea turtles find their birthplace

... Earth's magnetic field and use it to sense direction during their first migration away from their birthplace to the far-flung regions where they spend the ... turtles use magnetic information to help guide them during their first migration across the Atlantic Ocean. And in 2004 they discovered that sea turtles ...

Immune cells reveal fancy footwork

... nodes to activate T cells. Suzanne van Helden studied the adhesion and migration of both immature and mature dendritic cells. Dendritic cell as a ... up the tumour. It is possible that this knowledge about the adhesion and migration of dendritic cells could contribute to future developments in a new ...

UBC study establishes formula for predicting climate change impact on salmon stocks

... sockeye stock. "We analyzed river temperature data and the sockeye's migration dates and found that almost half of the population likely experienced ... spawning grounds. In a separate study, fish were intercepted during migration and implanted with biotelemetry trackers. None of the tracked salmon ...

Cold Spring Harbor Protocols features organ and cell culture methods

... "Preparing Recombinant Gonad Organ Cultures." It can be useful to assay migration between any two adjacent tissues during development. This protocol assays cell migration between the developing gonad and kidney using tissue recombination, ...
Other Contents
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