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Genetic Diversity Current Events, Genetic Diversity News Articles.
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Climate change threatens genetic diversity, future of world's caribou
Caribou in southern and eastern Canada may disappear from most of their current range in 60 years if climate change takes the toll on their habitat that scientists predict in a paper appearing online Dec. 15 in the journal Nature Climate Change. Scientists looked at reservoirs of genetic diversity in caribou and whether that diversity was linked to stable habitats. (2013-12-15)

Tasmanian tiger suffered low genomic diversity
Scientists have sequenced a portion of the thylacine genome, showing that like its cousin, the Tasmanian devil, it had extremely low genetic variability. The results suggest that both animals' genetic makeup was affected by their isolation from mainland Australia. (2012-04-18)

Climate change has long-term impact on species adaptability
Historic climate change events can have a lasting impact on the genetic diversity of a species, reveals a new study on the alpine marmot. (2019-05-20)

Fragmentation can make seedlings wimpy
New research shows that fragmentation of tropical forests can make trees wimpy. Seeds from isolated trees had less genetic diversity and were less likely to germinate, and the seedlings that did grow had smaller leaves. This is the first study of how forest fragmentation affects seedling quality. (2002-01-24)

A very small number of crops are dominating globally. That's bad news for sustainable agriculture
A new U of T study finds that globally we're growing more of the same kinds of crops, and this presents major challenges for agricultural sustainability on a global scale. (2019-02-06)

Host genetic factors shape composition of virus communities
Plants can be infected by multiple viruses at once. However, the composition of the pathogen community varies, even if individuals belong to the same species and the same population. Ecologists at the University of Zurich have now shown that these differences are primarily due to genetic variation among the hosts. The loss of genetic diversity could thus render species more vulnerable to infections and extinction. (2020-11-05)

Overfishing may diminish genetic diversity even when millions of fish remain
Populations of marine fish may lose genetic diversity even if fishing stops while there are still several million individuals - a number previously assumed to be enough to preserve a diverse gene pool. Losing the diversity of key genes can render a population less productive and unable to adapt. (2002-11-01)

New evidence for California Condors' genetic bottleneck
The researchers behind a new study in The Condor: Ornithological Applications analyzed samples from California Condor museum specimens dating back to the 1820s and found that the historical population was surprisingly diverse, but that a substantial amount of that diversity was lost in the last two centuries. (2016-10-14)

Do genes respond to global warming?
A novel analysis of paleoclimatic data, fossil abundance and contemporary and ancient DNA from different time periods introduces (2004-09-06)

High genomic variability predicts success in desert tortoise refugees; could inform conservation
Tortoise refugees with the highest genetic variation are far more likely to survive conservation translocation than tortoises whose genetic diversity is lower, according to a new study. (2020-11-26)

Some birds listen, instead of look, for mates
Looks can be deceiving, but certain bird species have figured out that a voice can tell them most of what they need to know to find the right mate. Andrew DeWoody, a Purdue University associate professor of forestry and natural resources, found that the higher the pitch of a male bird's song, the more genetic diversity that bird has, making him a better mate for breeding. (2009-12-02)

Lynx in Turkey: Noninvasive sample collection provides insights into genetic diversity
A team of scientists from the Leibniz Institute for Zoo and Wildlife Research (Leibniz-IZW) collected data and samples (feces, hair) from the Caucasian Lynx (Lynx lynx dinniki), in a region of Anatolian Turkey over several years. The results of the genetic analyses indicated an unexpectedly high genetic diversity and lack of inbreeding despite the recent isolation of the study population. (2019-06-17)

Rhino genome results
A study by San Diego Zoo Global reveals that the prospects for recovery of the critically endangered northern white rhinoceros -- of which only three individuals remain -- will reside with the genetic resources that have been banked at San Diego Zoo Global's Frozen Zoo®. Frozen cell cultures housed here from nine northern white rhinos contain genetic variation that is missing in surviving individuals of this subspecies of rhinoceros, which is now extinct in the wild. (2017-01-25)

University of Houston receives top honors for diversity
The University of Houston received three Higher Education Excellence in Diversity (HEED) awards from INSIGHT into Diversity Magazine, the oldest and largest diversity-focused publication in higher education. This is the first time an institution has earned three HEED awards in a single year, being presented to the University of Houston, the UH Law Center and the UH School of Nursing and will be featured in the magazine's November 2016 issue. (2016-10-26)

Coral colonies more genetically diverse than assumed
Coral colonies are more genetically diverse than it has been assumed to date. This is the conclusion drawn by biologists at Ruhr-Universit├Ąt Bochum, who have conducted comprehensive studies into the genetic variability in individual colonies of different reef-forming coral species. 'However, this doesn't mean we should expect that this variability can compensate for corals dying worldwide due to climate change,' says Maximilian Schweinsberg from the Department of Animal Ecology, Evolution and Biodiversity. (2015-06-10)

Giant pandas have plenty of genetic diversity
Even though there are only about 1,000 giant pandas left, there is hope for this beloved endangered species. A comprehensive genetic analysis of three wild giant panda populations shows that they still have enough genetic diversity to recover. (2001-11-30)

Diversity hot spots at cold seeps?
In the most recent issue of Ecology Letters, researchers report that diversity is greater in seep mussel beds compared to vent mussel beds. Lower diversity at vents may be a consequence of a challenging physiological barrier to invasion at vents than at seeps. Moreover, diversity at vents is lowest where spacing between vents is extensive, suggesting that risks of extinction due to limited dispersal may be important in governing biodiversity in the deep sea. (2003-05-22)

How squash agriculture spread bees in pre-Columbian North America
Using genetic markers, researchers have for the first time shown how cultivating a specific crop led to the expansion of a pollinator species. In this case, the researchers found that the spread of a bee species in pre-Columbian Central and North America was tied to the spread of squash agriculture. (2016-06-21)

Researchers demonstrate new method to track genetic diversity of salmon, trout
Scientists at Oregon State University and the U.S. Forest Service have demonstrated that DNA extracted from water samples from rivers across Oregon and Northern California can be used to estimate genetic diversity of Pacific salmon and trout. (2021-02-21)

Study of marine snail suggests conservation efforts should consider factors beyond genetic diversity
A study of climate-induced evolutionary change in a California intertidal snail suggests that resource managers shouldn't focus exclusively on genetic diversity when developing conservation plans for protecting endangered or threatened species. (2001-05-31)

DNA from taxidermy specimens explains genetic structure of British and Irish goats
Modern-day British and Irish goats used in agriculture lack genetic diversity. DNA comparisons were made with decades-old taxidermy specimens -- the first time such specimens have been used to answer questions about livestock genetics. (2017-02-28)

Mowing, Grazing Of Tall-Grass Prairie Increases
A long-term research study on tall grass prairies found that bison grazing or mowing increases the species diversity at a particular site of grasses on the prairie. Grazing and mowing keep plant diversity high even in annually burned or fertilized prairie where some plant species would otherwise be lost. (1998-05-01)

Scots Pine shows its continental roots
By studying similarities in the genes of Scots Pine trees, scientists have shown that the iconic pine forests of Highland Scotland still carry the traces of the ancestors that colonized Britain after the end of the last ice age, harboring genetic variation that could help regenerate future populations, according to new results in the journal Heredity. The research was carried out by an international team led by Centre for Ecology and Hydrology. (2010-09-08)

Identifying mega-targets for high-yield plant breeding
Genetic diversity in a breeding program is essential as an insurance against unforeseeable changes in the environment and to maintain genetic progress, and the incorporation of diversity should be planned carefully. A recent study proposed data-driven methods to group breeding programs likely to be compatible for germplasm exchange. (2009-02-16)

Genetic diversity of rice now secure in 'Doomsday Vault'
The International Rice Research Institute sent 42,627 samples of seeds from different types of rice in its collection last week to the Svalbard Global Seed Vault, dubbed the (2010-11-07)

A biodiversity discovery that was waiting in the wings -- wasp wings, that is
From spaghetti-like sea anemones to blobby jellyfish to filigreed oak trees, each species in nature is characterized by a unique size and shape. But the evolutionary changes that produce the seemingly limitless diversity of shapes and sizes of organisms on Earth largely remains a mystery. Nevertheless, a better understanding of how cells grow and enable organisms to assume their characteristic sizes and shapes could shed light on diseases that involve cell growth, including cancer and diabetes. (2012-02-24)

New book from CSHL Press with focus on genetics, personalized medicine and human diversity
'Human Variation,' new from Cold Spring Harbor Laboratory Press, provides a state-of-the-art view of human genetic variation and what we can infer from it, surveying the genetic diversity seen in Africa, Europe, the Americas, and India. The contributors discuss what this can tell us about human history and how it can be used to improve human health. They also caution against assumptions that differences between individuals always stem from our DNA, stressing the importance of nongenetic forces and pointing out the limits of our knowledge. (2014-10-17)

Salmon scales reveal substantial decline in wild salmon population & diversity
The diversity and numbers of wild salmon in Northern B.C. have declined approximately 70 per cent over the past century, according to a new Simon Fraser University study. (2021-02-22)

Diversity work should be considered in tenure and promotion decisions, MU professor says
Many college campuses are striving to become more diverse in their faculty and student populations, but creating a diverse environment can be a challenging and demanding process for faculty members. In a new study, Jeni Hart, assistant professor in the College of Education at the University of Missouri, examined how placing diversity and service work in a category separate from other faculty roles, such as scholarship and teaching, can create false dichotomies. (2009-02-02)

Ancient marine invasion sheds light on diversity
Fossils from the sea floor illuminate the relationship between local and global diversity, and these relationships may help us understand the effects of global climate change on species diversity. (2004-11-09)

Massive-scale genomic study reveals wheat diversity for crop improvement
Researchers have genetically characterized almost 80,000 samples of wheat from public germplasm banks, ''a massive-scale genotyping and diversity analysis'' of the two types of wheat grown globally -- bread and pasta wheat -- and of 27 known wild species. The results show distinct biological groupings within bread wheats and suggest that a large proportion of the genetic diversity present in landraces has not been used to develop new high-yielding, resilient and nutritious varieties. (2020-09-11)

Whole-genome sequencing of African hunter-gatherers reveals human genetic diversity
Genome sequences of African hunter-gatherers from three different populations reveal insights into how humans have adapted to distinct environments over evolutionary history. By sequencing whole genomes of individuals within these groups, a team of scientists has substantially expanded knowledge about the scope of genetic diversity in humans, publishing their findings on July 26 in the journal Cell. (2012-07-26)

Hanging in there: Koalas have low genetic diversity
A species relies on genetic diversity to survive and low diversity usually indicates that there has been inbreeding due to a decrease in population size. By looking at historic mitochondrial DNA from museum samples, new research published in BioMed Central's open access journal BMC Genetics has found that koalas have had low genetic diversity for over 120 years. (2012-10-23)

Insights on whale shark populations and evidence for their historic rise and recent decline
In the largest study on the genetics of whale sharks conducted to date, researchers found that the world's biggest fish likely exist in two distinct populations with minimal connectivity between the Indo-Pacific and the Atlantic Ocean. The findings suggest that mixing of whale sharks between the Indian and Atlantic was and is rare. (2014-08-04)

Sorghum: Not so ho-hum
Researchers recently released 40 varieties of early-flowering sorghum bred for use in cooler, more temperate areas. These early-flowering varieties of sorghum are critical for the spread of the crop to more new locations. (2016-03-16)

'Specialized' microbes within plant species promote diversity
A Yale-led research team conducted an experiment that suggests microbes can specialize within plant species, which can promote plant species diversity and increased seed dispersal. (2019-03-07)

Remote sheep population resists genetic drift
A wild sheep population on a remote Indian Ocean island is creating a buzz among genetics researchers. (2007-03-08)

'Severe reduction' in killer whale numbers during last Ice Age
Whole genome sequencing has revealed a global fall in the numbers of killer whales during the last Ice Age, at a time when ocean productivity may have been widely reduced, according to researchers at Durham University. (2014-02-04)

Genetic study finds treasure trove of new lizards
University of Adelaide research has discovered that there are many more species of Australian lizards than previously thought, raising new questions about conservation and management of Australia's native reptiles. (2009-03-03)

New hope for world's most endangered mammal
New genetic analysis of white rhino populations suggests it could be possible to rescue the critically endangered northern white rhinoceros from extinction, using the genes of its less threatened southern cousin. (2018-11-07)

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