Tasmanian devils adapting to coexist with cancer: studyMarch 30, 2019 - 12:22 AMT PanARMENIAN.Net - There's fresh hope for the survival of endangered Tasmanian devils after large numbers were killed off by facial tumours, the BBC reports. The world's largest carnivorous marsupials have been battling Devil Facial Tumour Disease (DFTD) for over 20 years. But researchers have found the animals' immune system to be modifying to combat the assault. And according to an international team of scientists from Australia, UK, US and France, the future for the devils is now looking brighter. "In the past, we were managing devil populations to avoid extinction. Now, we are progressively moving to an adaptive management strategy, enhancing those selective adaptations for the evolution of devil/DFTD coexistence," explains Dr Rodrigo Hamede, from the University of Tasmania. First discovered in north-eastern Tasmania in 1996, the disease has since spread across 95% of the species' range, with local population losses of over 90%. Dr Hamede's team has been collecting epidemiological evidence over the past 10 years. The group has plotted scenarios based on current infection rates in the wild, and in their forecast for the next 100 years, 57% of scenarios see DFTD fading out and 22% predict coexistence. The disease is transmitted when devils bite each other's faces during fights. The biting behaviour is a way to socialise and assert dominance which, alongside the growl-like screams, helped earn the devils their nickname. "Our current hypothesis is that the biting doesn't only lead to the spread of tumours but it might be the starting point," explains Max Stammnitz, from the University of Cambridge, UK, who sequences tumour genomes. "If the scarring processes for the recurring wounds are interrupted by a mutation, this might become cancerous. It fails to heal and starts to grow out into an external tissue that may then become transmissible," Mr Stammnitz says. Related links: Top stories Authorities said a total of 192 Azerbaijani troops were killed and 511 were wounded during Azerbaijan’s offensive. In 2023, the Azerbaijani government will increase the country’s defense budget by more than 1.1 billion manats ($650 million). The bill, published on Monday, is designed to "eliminate the shortcomings of an unreasonably broad interpretation of the key concept of "compatriot". The earthquake caused a temporary blackout, damaged many buildings and closed a number of rural roads. Partner news | Kazakhstan welcomes Yerevan, Baku’s agreement to meet in Almaty Kassym-Jomart Tokayev has welcomed the agreement of Baku and Yerevan to hold negotiations in Almaty. Armenia offers to temporarily host, preserve Gaza manuscripts The Armenian Foreign Minister has said Yerevan is ready to help preserve manuscripts from the conflict zone in Gaza. Aliyev says no need for mediators in Armenia-Azerbaijan process Azerbaijani President Ilham Aliyev believes that Baku and Yerevan do not mediators in the process of normalizing relations. Aram I supports Karekin II’s “patriotic position” Catholicos of the Great House of Cilicia Aram I has expressed support for the Mother See of Holy Etchmiadzin. |