Navigation Links
Disease not a factor in Tassie Tiger extinction
Date:1/31/2013

Humans alone were responsible for the demise of Australia's iconic extinct native predator, the Tasmanian Tiger or thylacine, a new study led by the University of Adelaide has concluded.

Using a new population modelling approach, the study contradicts the widespread belief that disease must have been a factor in the thylacine's extinction.

The thylacine was a unique marsupial carnivore found throughout most of Tasmania before European settlement in 1803. Between 1886 and 1909, the Tasmanian government encouraged people to hunt thylacines and paid bounties on over 2000 thylacine carcasses. Only a handful of animals were located after the bounty was lifted and the last known thylacine was captured from the wild in 1933.

"Many people, however, believe that bounty hunting alone could not have driven the thylacine extinct and therefore claim that an unknown disease epidemic must have been responsible," says the project leader, Research Associate Dr Thomas Prowse, School of Earth and Environmental Sciences and the Environment Institute.

"We tested this claim by developing a 'metamodel' a network of linked species models that evaluated whether the combined impacts of Europeans could have exterminated the thylacine, without any disease."

The mathematical models used by conservation biologists to simulate the fate of threatened species under different management strategies (called population viability analysis or PVA) traditionally neglect important interactions between species. The researchers designed a new approach to PVA that included species interactions.

"The new model simulated the directs effects of bounty hunting and habitat loss and, importantly, also considered the indirect effects of a reduction in the thylacine's prey (kangaroos and wallabies) due to human harvesting and competition from millions of introduced sheep," Dr Prowse says.

"We found we could simulate the thylacine extinction, includ
'/>"/>

Contact: Dr. Thomas Prowse
thomas.prowse@adelaide.edu.au
61-431-480-729
University of Adelaide
Source:Eurekalert

Page: 1 2

Related biology news :

1. Parkinsons disease stopped in animal model
2. Disease-carrying colonizers on the move: Predicting the spread of ticks across Canada
3. U of Alberta researcher steps closer to understand autoimmune diseases
4. Common North American frog identified as carrier of deadly amphibian disease
5. New insight into mechanisms behind autoimmune diseases suggests a potential therapy
6. Genetic research develops tools for studying diseases, improving regenerative treatment
7. Researchers discover novel therapy for Crohns disease
8. New hope for treating Alzheimers Disease: A role for the FKBP52 protein
9. Low-calorie diet may be harmful for bowel disease patients
10. Key to immune system disease could lie inside the cheek
11. Cell therapy using patients own bone marrow may present option for heart disease
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/11/2014)... from Ume University, Sweden, have explored two different ... reaction sequence leading to the formation of oxygen ... published in the scientific journal Nature Communications ... present day synthetic catalysts for water oxidation, which ... for the direct storage of solar energy in ...
(Date:7/11/2014)... that transplantation of mesenchymal stem cells can stimulate neurogenesis ... of Alzheimer,s disease (AD) and improve tissue and function ... are reported on the therapeutic effect of adipose-derived stem ... the effect on oxidative injury and neurogenesis in the ... team, School of Life Sciences, Tsinghua University, China transplanted ...
(Date:7/11/2014)... Evidence exists that cannabinoid receptor type 1 ... Ca2+ influx, and reduce neurotransmitter release. However, ... 1 can increase extracellular Ca2+ influx and ... his team, Tongji Hospital Affiliated to Tongji ... Technology, China used whole cell voltage-clamp and ...
Breaking Biology News(10 mins):Molecular snapshots of oxygen formation in photosynthesis 2
... electronic skin, or e-skin, and electronic eye implants or ... Researchers with Berkeley Lab and the University of California ... of carbon nanotubes and silver nanoparticles similar to the ... e-whiskers respond to pressure as slight as a single ...
... of men,s bones - but only if they marry when they,re ... In a study published online in the peer-reviewed journal Osteoporosis ... were younger than 25 had lower bone strength than men who ... In addition, men in stable marriages or ...
... climate. Take, for example, the Mayans, who, throughout the ... their major ceremonial centers after a series of multi-year droughts, ... forests. Much later, in the late 20th century, frequent droughts ... migrate from the dry north to the wetter south where ...
Cached Biology News:E-whiskers 2Guys: Get married for the sake of your bones, but wait until you're 25 2Guys: Get married for the sake of your bones, but wait until you're 25 3Princeton model anticipates ecological impacts of human responses to climate 2Princeton model anticipates ecological impacts of human responses to climate 3
(Date:7/14/2014)... 14, 2014 Throughout this past ... the clinical trials space, representing 38 countries globally, ... entitled “Optimizing Patient Participation in Clinical Trials. Attract. ... with internationally renowned R&D expert, Ken Getz, of ... Reinventing Drug Development through Patient Centricity. , Throughout ...
(Date:7/13/2014)... 2014 Deep Research Report on Global and ... study on the current state of the Nano Silver ... a basic overview of the industry, including definitions, applications ... domestic market analysis are provided with a focus on ... A comparison between the international and Chinese situation is ...
(Date:7/11/2014)... , July 11, 2014 Research ... "International Transfection Technology Market - Global Industry Analysis, Size, ... to their offering. http://photos.prnewswire.com/prnh/20130307/600769 ... introduce nucleic acids (either DNA or RNA) into cells. ... mutation of cancer cells and protein metabolism by affecting ...
(Date:7/11/2014)... , July 11, 2014  Researchers have ... three-dimensional images. The new technology, called Virtual Finger, ... small structures like neurons and synapses using the ... unique technology makes 3D imaging studies orders of ... at an unprecedented level across many areas of ...
Breaking Biology Technology:Optimizing Patient Participation in Clinical Trials: Attract. Engage. Retain. – eCongress eBox Archives Now Available 2Optimizing Patient Participation in Clinical Trials: Attract. Engage. Retain. – eCongress eBox Archives Now Available 3Optimizing Patient Participation in Clinical Trials: Attract. Engage. Retain. – eCongress eBox Archives Now Available 4Optimizing Patient Participation in Clinical Trials: Attract. Engage. Retain. – eCongress eBox Archives Now Available 52014 Nano Silver Industry in Global and China Regions Development Proposals Analysis Available at DeepResearchReports.com 22014 Nano Silver Industry in Global and China Regions Development Proposals Analysis Available at DeepResearchReports.com 3International Transfection Technology Market - Industry Analysis, Size, Share, Growth, Trends and Forecast to 2019 2Virtual Finger Enables Scientists To Navigate And Analyze 3D Images Of Complex Biological Structures 2Virtual Finger Enables Scientists To Navigate And Analyze 3D Images Of Complex Biological Structures 3
... , for routine high fidelity amplification of up to 3.5 kb , ... 100 units , Cat. No. 1 664 955 ... , , Description , , , ... archaebacterium Pyrococcus woesei. The enzyme has a molecular weight of , ...
... , for routine amplification of up to 3 kb genomic DNA ... , , , , , ... contains 10 vials of 2x concentrated PCR reaction , mix (Taq ... dNTPs) plus water PCR grade (for dilution), sufficient for 100 , ...
... for amplification of up to 5 kb targets from genomic DNA ... , , , , , ... concentrated High Fidelity PCR Master contains all necessary , reagents ... a unique enzyme blend of Taq DNA Polymerase and Pwo DNA Polymerase[a thermostable , ...
Cached Biology Technology:Pwo DNA Polymerase 2Pwo DNA Polymerase 3PCR Master 2PCR Master 3High Fidelity PCR Master 2