(Press-News.org) WASHINGTON, DC - Researchers have documented the longest-known terrestrial migration of wildlife in Africa – up to several thousand zebra covering a distance of 500km (more than 300 miles) – according to World Wildlife Fund (WWF).
Using GPS collars on eight adult Plains zebra (Equus quagga), WWF and Namibia's Ministry of Environment and Tourism (MET), in collaboration with Elephants Without Borders (EWB) and Botswana's Department of Wildlife and National Parks, tracked two consecutive years of movement back and forth between the Chobe River in Namibia and Botswana's Nxai Pan National Park, a straight-line distance of 250km (500km round-trip). The findings are detailed in a new study published in the journal, Oryx.
The discovery comes at a time when migrations of a diverse range of species around the world are increasingly imperiled, and zebra migrations in other parts of Africa have been disrupted by physical barriers such as fences.
"This unexpected discovery of endurance in an age dominated by humans, where we think we know most everything about the natural world, underscores the importance of continued science and research for conservation" said Dr. Robin Naidoo, senior conservation scientist at WWF.
The potential conservation implications of the study are considerable. The observed migration takes place entirely within the Kavango Zambezi Transfrontier Conservation Area (KAZA) – the world's largest multi-country conservation area. Spanning 109 million acres across Namibia, Botswana, Zimbabwe, Zambia and Angola, KAZA exemplifies the kind of large landscape conservation approach that will be necessary to preserve the world's remaining great terrestrial migrations.
"The findings of this study emphasize the importance of trans-frontier conservation areas in conservation of the greater landscape" said Pierre Du Preez, Chief Conservation Scientist at MET in Namibia. "This study has played a crucial role in helping determine a key wildlife corridor in KAZA."
"At a time when conservation news is inherently rather negative, the discovery of this unknown natural phenomenon should resonate with people around the world. The government's commitment to secure key migratory corridors serves to underpin the growing wildlife tourism industry. We plan to continue monitoring the migration to try and conserve such increasingly rare natural events" said Dr. Mike Chase, EWB's founder.
Continued long-term research will be needed to confirm that this is an annual and fixed migration, and whether this is genetically coded or passed behaviorally from mothers to offspring.
INFORMATION: END
Africa's longest-known terrestrial wildlife migration discovered
Researchers document zebra traveling 500 km round-trip between Namibia and Botswana
2014-05-27
ELSE PRESS RELEASES FROM THIS DATE:
Chest CT helps predict cardiovascular disease risk
2014-05-27
OAK BROOK, Ill. – Incidental chest computed tomography (CT) findings can help identify individuals at risk for future heart attacks and other cardiovascular events, according to a new study published online in the journal Radiology.
"In addition to diagnostic purposes, chest CT can be used for the prediction of cardiovascular disease," said Pushpa M. Jairam, M.D., Ph.D., from the University Medical Center Utrecht, in Utrecht, the Netherlands. "With this study, we have taken a new perspective by providing a different approach for cardiovascular disease risk prediction ...
An area's level of poverty or wealth may affect the distribution of cancer types
2014-05-27
A new analysis has found that certain cancers are more concentrated in areas with high poverty, while other cancers arise more often in wealthy regions. Also, areas with higher poverty had lower cancer incidence and higher mortality than areas with lower poverty. Published early online in CANCER, a peer-reviewed journal of the American Cancer Society, the study's findings demonstrate the importance of including measures of socioeconomic status in national cancer surveillance efforts.
Overall, socioeconomic status is not related to cancer risk—cancer strikes the rich and ...
E-cigarettes: Not a healthy alternative to smoking
2014-05-27
ARLINGTON HEIGHTS, Ill. (May 27, 2014) – Caveat emptor – or "buyer beware" holds true when it comes to the unknown health effects of e-cigarettes. An article in the June issue of Annals of Allergy, Asthma & Immunology, the scientific journal of the American College of Allergy, Asthma and Immunology (ACAAI), examines risks, including the ongoing dependence on nicotine and the dual use of e-cigarettes and regular cigarettes.
The article examines the idea that one of the initial "health benefits" proposed by e-cigarettes makers was that it would help those who smoke cigarettes ...
Annals of Internal Medicine tip sheet for May 27, 2014
2014-05-27
1. Task Force: Screen high-risk individuals for hepatitis B
The U.S. Preventive Services Task Force (USPSTF) recommends hepatitis B virus (HBV) screening for nonpregnant high-risk adolescents and adults, according to a recommendation statement being published in Annals of Internal Medicine. Up to 2.2 million people in the United States have chronic HBV, and 15 to 25 percent of those infected will die from liver disease or liver cancer. Screening for HBV could identify those who may benefit from treatment. Most people born in the United States have been vaccinated for ...
Inhaling hypertonic saline decreases hospital admissions in children with bronchiolitis
2014-05-26
A team of researchers, led by physicians from Children's Hospital Los Angeles, have found that infants with bronchiolitis who were treated with inhaled hypertonic saline in the emergency department (ED) were less likely to require admission to the hospital compared to infants treated with normal saline.
The study, conducted at Children's Hospital Los Angeles and UCSF Benioff Children's Hospital Oakland, will be published in JAMA Pediatrics on May 26.
Bronchiolitis is a respiratory infection common in infants and young children that results in approximately 150,000 ...
Hot flashes/night sweats solutions: Estrogen therapy vs. Venlafaxine
2014-05-26
BOSTON, MA – A new research study from Brigham and Women's Hospital (BWH) that compares low-dose oral estrogen and low-dose non-hormonal venlafaxine hydrochloride extended release (XR) to placebo were both found effective in reducing the number of hot flashes and night sweats reported by menopausal women. The study is the first clinical trial to simultaneously evaluate estrogen therapy (ET), known as the "gold standard" treatment for hot flashes and night sweats, and a non-hormonal treatment, venlafaxine, a first-line treatment in women who are unwilling or unable to ...
Conflicting conclusions in 2 bronchiolitis studies; editorial explains why
2014-05-26
Less Improvement in Infants with Bronchiolitis After Nebulized Hypertonic Saline Treatment
Bottom Line: Children with bronchiolitis (a common respiratory tract infection that can result in hospitalization) who were treated in the emergency department showed less clinical improvement after receiving nebulized 3 percent hypertonic saline (HS) than infants who received normal saline (NS).
Author: Todd A. Florin, M.D., M.S.C.E., of the Cincinnati Children's Hospital, and colleagues.
Background: Nebulized HS has been shown to increase mucociliary clearance (the clearing ...
Ebola vaccine success highlights dilemma of testing on captive chimps to save wild apes
2014-05-26
The first conservation-specific vaccine trial on captive chimpanzees has proved a vaccine against Ebola virus is both safe and capable of producing a robust immune response in chimpanzees.
This unprecedented study, published in the journal PNAS, shows that 'orphan' vaccines - which never complete the expensive licensing process for human use - can be co-opted for use on wildlife and might be a godsend for highly endangered species such as gorillas and chimpanzees, say researchers.
They suggest that, by ending captive research in an effort to pay back an "ethical ...
From chaos to order: How ants optimize food search
2014-05-26
Ants are capable of complex problem-solving strategies that could be widely applied as optimization techniques. An individual ant searching for food walks in random ways, biologists found. Yet the collective foraging behaviour of ants goes well beyond that, as a mathematical study to be published in the Proceedings of the National Academy of Sciences reveals: The animal movements at a certain point change from chaos to order. This happens in a surprisingly efficient self-organized way. Understanding the ants could help analyze similar phenomena - for instance how humans ...
Relaxation helps pack DNA into a virus
2014-05-26
Researchers at the University of California, San Diego have found that DNA packs more easily into the tight confines of a virus when given a chance to relax, they report in a pair of papers to be published in in the early edition of the Proceedings of the National Academy of Sciences the week of May 26 and the May 30 issue of Physical Review Letters.
DNA is a long, unwieldy molecule that tends to repel itself because it is negatively charged, yet it can spool tightly. Within the heads of viruses, DNA can be packed to near crystalline densities, crammed in by a molecular ...
LAST 30 PRESS RELEASES:
The American Society of Tropical Medicine and Hygiene and the Bill & Melinda Gates Foundation announce new research fellowship in malaria genomics in honor of professor Dominic Kwiatkowski
Excessive screen time linked to early puberty and accelerated bone growth
First nationwide study discovers link between delayed puberty in boys and increased hospital visits
Traditional Mayan practices have long promoted unique levels of family harmony. But what effect is globalization having?
New microfluidic device reveals how the shape of a tumour can predict a cancer’s aggressiveness
Speech Accessibility Project partners with The Matthew Foundation, Massachusetts Down Syndrome Congress
Mass General Brigham researchers find too much sitting hurts the heart
New study shows how salmonella tricks gut defenses to cause infection
Study challenges assumptions about how tuberculosis bacteria grow
NASA Goddard Lidar team receives Center Innovation Award for Advancements
Can AI improve plant-based meats?
How microbes create the most toxic form of mercury
‘Walk this Way’: FSU researchers’ model explains how ants create trails to multiple food sources
A new CNIC study describes a mechanism whereby cells respond to mechanical signals from their surroundings
Study uncovers earliest evidence of humans using fire to shape the landscape of Tasmania
Researchers uncover Achilles heel of antibiotic-resistant bacteria
Scientists uncover earliest evidence of fire use to manage Tasmanian landscape
Interpreting population mean treatment effects in the Kansas City Cardiomyopathy Questionnaire
Targeting carbohydrate metabolism in colorectal cancer: Synergy of therapies
Stress makes mice’s memories less specific
Research finds no significant negative impact of repealing a Depression-era law allowing companies to pay workers with disabilities below minimum wage
Resilience index needed to keep us within planet’s ‘safe operating space’
How stress is fundamentally changing our memories
Time in nature benefits children with mental health difficulties: study
In vitro model enables study of age-specific responses to COVID mRNA vaccines
Sitting too long can harm heart health, even for active people
International cancer organizations present collaborative work during oncology event in China
One or many? Exploring the population groups of the largest animal on Earth
ETRI-F&U Credit Information Co., Ltd., opens a new path for AI-based professional consultation
New evidence links gut microbiome to chronic disease outcomes
[Press-News.org] Africa's longest-known terrestrial wildlife migration discoveredResearchers document zebra traveling 500 km round-trip between Namibia and Botswana