Tag Archives | science
wombat

Survival of the cheapest: how we could save our animals

Survival of the cheapest: how we could save our animals Kathy Marks, in Sydney 14th Jan 2014 5:30 AM Tjuka the wombat, part of a breeding program at Australian Animal Care and Education’s not-for-profit organisation Safe Haven.Luka Kauzlaric IF YOU have nearly 100 critically endangered animals, how do you target limited conservation resources? Australian scientists…read more

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An asteroid impact caused the last mass extinction

Humans could wipe out 75 percent of Earth’s species within 500 years

  Marine geophysicist Mike Coffin says humans could wipe out 75pc of Earth’s species within 500 years Updated Sun 12 Jan 2014, 4:43pm AEDT PHOTO: An asteroid impact caused the last mass extinction event, which occurred 65 million years ago. (NASA: Reuters) Humans could wipe out three quarters of the Earth’s species within 240 to 500 years in…read more

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koalas have extra vocal chords

Male koala bears use extra vocal chords to woo ladies

Koalas use a novel vocal organ to produce unusually low-pitched mating calls During the breeding season, male koalas produce ‘bellow’ vocalisations that are characterised by a continuous series of inhalation and exhalation sections, and an extremely low fundamental frequency (the main acoustic correlate of perceived pitch) [1]. Remarkably, the fundamental frequency (F0) of bellow inhalation…read more

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Koalas living in the eastern parts of the range rely on the moisture of their leaves for water (Source: Josh Berglund/Flickr)

Koalas on the outer live life differently

Koalas on the outer live life differently Friday, 13 September 2013 Katie Silver – ABC Koalas living in the eastern parts of the range rely on the moisture of their leaves for water(Source: Josh Berglund/Flickr) Related Stories Koalas reject rehab field of dreams, Science Online, 20 Feb 2013 Koalas added to threatened species list, Science…read more

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retrovirology logo

Koala retroviruses: characterization and impact on the life of koalas

Koala retroviruses: characterization and impact on the life of koalas Joachim Denner and Paul R Young Author Affiliations For all author emails, please log on. Retrovirology 2013, 10:108 doi:10.1186/1742-4690-10-108 Published: 23 October 2013 Abstract (provisional) Koala retroviruses (KoRV) have been isolated from wild and captive koalas in Australia as well as from koala populations held in zoos in other countries. They…read more

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A Koala climbs a tree

Koalas are put at serious risk by logging activities

Koalas face carnage as loggers harvest timber plantations; wildlife carers call for action 7.30 Report By Greg Hoy Mon Jul 22, 2013 7:54pm AEST Disturbing numbers of koalas are being killed and injured by loggers in timber plantations across south-east Australia. Thousands of koalas have taken refuge in the vast timber plantations that have emerged across the…read more

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Hope for koala as scientists make genetic breakthrough

Hope for koalas fight against Chlamydia as scientists make genetic breakthrough

Hope for koala as scientists make genetic breakthrough April 10, 2013 - Melissa Davey - Health Reporter Genetic win: Professor Peter Timms, far left, with Adam Polkinghorne, Dr Rebecca Johnson and Mark Eldridge, says it was “only right” his team won the global race to diagnose and treat diseases threatening to wipe out koalas. Photo: Ben Rushton Scientists have…read more

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koala retrovirus pandemic

What koalas can teach us about human evolution and disease.

Past Pandemics Are in Our Genes What koalas can teach us about human evolution and disease. By Carl Zimmer|Posted Thursday, Dec. 6, 2012, at 7:19 AM ET When koalas infected with the koala retrovirus reproduce, they pass the viral DNA along with their own to their offspring.Photo by Torsten Blackwood/AFP/Getty Images. To understand what it means…read more

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Nimbadon reconstruction

Ancient tree-wombat behaved like a koala

Scientists say the Nimbadon an ancient tree-wombat  the size of a human that roamed the earth 15 odd million years ago behaved a lot like a koala! Ancient tree-wombat behaved like a koala Thursday, 22 November 2012Anna Salleh - ABC Nimbadon weighed about the same as a human and lived in Australian rainforests 15 million years ago (Peter Schouten)…read more

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lonely koala in a tree

A history of inbreeding leaves koalas with low genetic diversity

Lonely Koalas Long Ago Turned to Kin for Sex Stephanie Pappas, LiveScience Senior Writer Date: 22 October 2012 Time: 03:30 PM ET A koala bear (Phascolarctos cinereus). CREDIT: Dr. Eveline Dungl – Tiergarten Schönbrunn A checkered past for Australia’s koalas means that the tuft-eared marsupials have low genetic diversity — a sign of inbreeding. Mating…read more

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friendly male koala in a tree

Museum pelts help date the koala retrovirus

Museum pelts help date the koala retrovirus 11 OCTOBER 2012 The genomes of most higher organisms contain sequences from retroviral genomes called endogenous retroviruses (ERVs). These are DNA copies of retroviral RNAs that are integrated into the germ line DNA of the host, and passed from parent to offspring. In most species the infections that…read more

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