Tag: "migrating" at biology news

Smithsonian to coordinate planning for Panama's Coiba National Park/World Heritage Site

...iba is still a truly wild place where we can study migrating marine mammals and coral biodiversity. We want to keep it that way, but without closing it off to fishing, ecotourism and other sustainable activities," explains Dr. Juan Maté, STRI project coordinator. Coiba National Park forms part of the Eastern ...

Dragonfly migration resembles that of birds, scientists say

Princeton, N.J. - Scientists have discovered that migrating dragonfliesand songbirds exhibit many of the same behaviors, suggesting the rulesthat govern such long-distance travel may be simpler and more ancientthan was once thought. The research, published in the May 11 Biology Letters, is based on datagenera...

Neurons find their place in the developing nervous system with the help of a sticky molecule

...ied a molecule expressed on the surface of certain migrating neurons that helps them find their correct positio...howed that MDGA1 is expressed on subpopulations of migrating neurons throughout the developing nervous system, including layer 2/3 neurons in the neocortex, sugg...

News tips from the Journal of Neuroscience

...one or deep in the cortical plate (CP) rather than migrating to the superficial CP that becomes layers 2/3. Overexpression of MDGA1 rescued the migration of layer 2/3 neurons. 3. The Subdivisions of Visual Working Memory Harald M. Mohr, Rainer Goebel, and David E. J. Linden According to the "domain-specific"...

New groundbreaking findings in taste, smell and chemical irritation

...f smell. The irresistible scent of bile summons migrating salmon and trout home -- Although born in streams, salmon spend most of their lives in the open ocean feeding before returning to their birth-streams to reproduce. While it's been known for decades that salmon recognize home-streams using their sens...

Earth from Space: Iceberg knocks the block off Drygalski Ice Tongue

...he southern edge of the ice tongue but had started migrating by 27 March. The collision on 30 March shows the ice tongue breaking off, and the final image on 1 April captures C-16 and the new iceberg swinging to the other side of the ice tongue. Mark Drinkwater of ESA's Ocean and Ice Unit said: "During its pa...

Northern birds are fatter!

...n Fraser University, Canada) who has been tracking migrating birds for several years. "This research may have i...re and digestive enzymes between non-migrating and migrating birds, so there might also be similar alterations in migrating bird's physiology further north, whic...

Researchers identify genes in fruitflies that may shed light on human cancer spread

...ape and structure and which become very dynamic in migrating cells; and a group of genes involved in transporting materials from the inside of a cell to its membrane surface and back again. "So-called border cell migration shares common characteristics with metastatic cancer cells," says Xuejiao Wang, M.D., P...

Enzyme inhibitors block replication of SARS virus

...pected of originating in animal populations before migrating to humans. Hardest-hit were six Asian nations. By the time the epidemic had been controlled in 2003, the disease infected more than 8,000 people, causing 800 deaths. There is no current effective treatment or vaccine. Researchers have known since 20...

News tips from the Journal of Neuroscience

...ial erbB2 interacts with neuregulin I expressed by migrating granule cells. This week, Patten et al. report that overexpression of DTX1 or a dominant-negative form disrupted Su(H)-mediated signaling, but expression of Su(H) had no effect on DTX1-induced events. In contrast, RNAi-mediated knock-down of DTX1 sel...

Uncovering how bone marrow stromal cells can potentially regenerate brain tissue

...s "may contribute to neural tissue regeneration by migrating toward the periinfarct area and acquiring the neuron-specific receptor function," reports the JNM article. The authors emphasized that "it is essential to clarify the underlying mechanism before undertaking clinical trials with stem cellbased approac...

Drawing a crowd: How progenitor cells are recruited to tumor blood vessels from the bone marrow

...genitor cells from sticking to blood vessels, from migrating to newly formed vessels, and from changing into different cell types. Together these studies support a potent role of VLA-4 in the regulation of bone marrowderived progenitor cells in wound repair and migration. The authors suggest that inhibiting ...

JCI table of contents, February 23, 2006

...genitor cells from sticking to blood vessels, from migrating to newly formed vessels, and from changing into different cell types. Together these studies support a potent role of VLA-4 in the regulation of bone marrowderived progenitor cells in wound repair and migration. The authors suggest that inhibiting th...

Authors, illustrator win AAAS/Subaru SB&F Prize for Excellence in Science Books

...attractive to upland plovers, bobolinks, and other migrating birds. This book is appropriate for children in grades 5-8. Popular Science Books for High School Readers Invisible Allies: Microbes That Shape Our Lives Author: Jeanette Farrell Farrar, Straus & Giroux, 2005 Inside this book are interesting chapt...

Less is more, gene study shows

...idea that it happened not long before humans began migrating out of Africa 40,000 to 60,000 years ago. As for exactly how lacking the gene---which appears to be essential in all mammals except humans---became more advantageous than having the gene, Zhang believes he has an answer. The immune system, he explai...

A new way of looking at molecular motors

... cause disease by preventing developing cells from migrating to their necessary destinations before birth or by preventing parts of the body, such as sperm tails or the tiny hairs that keep mucus flowing in the lungs, from moving when they are supposed to. The motors in parasitic organisms contribute to diseas...

Bird flu poses threat to international security, Illinois scholar says

...ucks, geese and other waterfowl -- including those migrating from Asia to Europe and others using flyways that take them from Asia to the United States through Alaska and Canada -- "pose a significant delivery system for avian influenza as they infect domestic birds, then animals by droppings laden with viruse...

WHSRN announces three new international sites

...rd that breeds in the High Arctic of Alaska before migrating to Central and South America. On its return visit, the species stops at Anahuac where the highest count on a single day has been 2,200 birds more than 10 percent of its total population. The new WHSRN coalition sites will help protect migratory sho...

Malaria parasites develop in lymph nodes

...speed that is amongst the fastest recorded for any migrating cell. After leaving the skin, the parasites frequently invaded blood vessels. That was no surprise to Mnard, since they need to travel through blood vessels to get to the liver. However, many of the parasites also invaded lymphatic vessels. About 25...

Scientists find unusual lung-cancer tumor-suppressor gene

...s more commonly found in embryos and is capable of migrating to other tissues. This suggests that the silencing of the TCF21 gene might help a tumor to spread to other areas of the body, a process known as metastasis. The gene is also often silenced or lost in a variety of other cancers, including breast and ...

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(Date:7/30/2014)... of the Entomological Society of America (ESA) has elected ... election as a Fellow acknowledges outstanding contributions to entomology ... extension, or administration. The following Fellows will be recognized ... which will be held November 16-19, 2014 in Portland, ... a professor with the Department of Plant, Soil and ...
(Date:7/30/2014)... Laboratory has received a pledge of $1 million from ... the Laboratory,s new Neurobehavioral Biometry Center. , ... will enable the Laboratory to develop a greater breadth ... ultimate goal of accelerating the pace of research to ... as a premier resource for the Laboratory and its ...
(Date:7/30/2014)... a changing climate threaten some of the world,s ... conservationists establish seed collections to save the seeds ... preserving some genetic diversity., For decades, these seed ... offer a one-size-fits-all approach for how many seeds ... samples regardless of species, pollination mode, growth habitat ...
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