A newly published paper in the July edition of Nature Reviews Cancer compiles information on cancer in wildlife and suggests that cancer poses a conservation threat to certain species. The WCS authors highlight the critical need to protect both animals and people through increased health monitoring.
“Cancer is one of the leading health concerns for humans, accounting for more than 10 percent of human deaths,” said Dr. Denise McAloose, lead author and Chief Pathologist for WCS’s Global Health Program. “But we now understand that cancer can kill wild animals at similar rates.”
In certain situations, cancer threatens the survival of entire species. The Tasmanian devil, the world’s largest carnivorous marsupial, is at risk of extinction due to a cancer known as devil facial tumor disease. This form of contagious cancer spreads between individual Tasmanian devils through direct contact (primarily fighting and biting). To save the species from this fatal disease, conservationists are relocating cancer-free Tasmanian devils to geographically isolated areas or zoos.
Many species living within polluted aquatic environments suffer high rates of cancerous tumors, and studies strongly suggest links between wildlife cancers and human pollutants. For example, the study cites the case of beluga whales in the St. Lawrence River system. These whales have an extraordinarily high rate of intestinal cancer, which is their second leading cause of death. One type of pollutant in these waters—polycyclic aromatic hydrocarbons (or PAHs)—is a well-known carcinogen in humans, and PAHs are suspected carcinogens for beluga whales as well. Fish in other industrialized waterways, including brown bullhead catfish and English sole, also exhibit high levels of cancer.
Virus-induced cancers can affect the ability of some wildlife populations to reproduce. Genital tumors in California sea lions on North America’s western coast occur at much higher rates than previously documented. Oceanic dolphin species, such as the dusky dolphin and Burmeister’s porpoise (both found in the coastal waters of South America), are also showing higher rates of genital carcinomas.
Other virus-induced cancers can affect the feeding ability or eyesight of wildlife. Green sea turtles—a migratory species in oceans across the globe—suffer from fibropapillomatosis, a disease that causes skin and internal organ tumors. A virus is suspected as the cause these tumors, and environmental factors such as human-manufactured carcinogens might exacerbate their severity or prevalence.
Monitoring the health of wildlife can illuminate the causes of cancer in animal populations; thereby, better safeguarding animals and humans against possible disease. Evaluating cancer threats in wildlife populations requires the collaborative efforts of biologists, veterinarians, and pathologists as well as the earnest engagement of governments and international agencies. The paper concludes that more resources are necessary to support wildlife health monitoring.
“Examining the impact of cancer in wildlife, in particular those instances when human activities are identified as the cause, can contribute to more effective conservation and fits within the One World–One Health approach of reducing threats to both human and animal health,” said Dr. William Karesh, Vice President and Director of WCS’s Global Health Program.
John Delaney | Newswise Science News
Further reports about: > Cancer > Faces > Health > Tasmanian devils > Tasmanian tiger > WCS > WCS’s Global Health Program > Wildlife > Wildlife Conservation > aquatic environments > cancer-free Tasmanian devils > carcinogens > carnivorous marsupial > fatal disease > polycyclic aromatic hydrocarbons > wild animal populations > wildlife populations
Safeguarding sustainability through forest certification mapping
27.06.2017 | International Institute for Applied Systems Analysis (IIASA)
Dune ecosystem modelling
26.06.2017 | Albert-Ludwigs-Universität Freiburg im Breisgau
An international team of scientists has proposed a new multi-disciplinary approach in which an array of new technologies will allow us to map biodiversity and the risks that wildlife is facing at the scale of whole landscapes. The findings are published in Nature Ecology and Evolution. This international research is led by the Kunming Institute of Zoology from China, University of East Anglia, University of Leicester and the Leibniz Institute for Zoo and Wildlife Research.
Using a combination of satellite and ground data, the team proposes that it is now possible to map biodiversity with an accuracy that has not been previously...
Heatwaves in the Arctic, longer periods of vegetation in Europe, severe floods in West Africa – starting in 2021, scientists want to explore the emissions of the greenhouse gas methane with the German-French satellite MERLIN. This is made possible by a new robust laser system of the Fraunhofer Institute for Laser Technology ILT in Aachen, which achieves unprecedented measurement accuracy.
Methane is primarily the result of the decomposition of organic matter. The gas has a 25 times greater warming potential than carbon dioxide, but is not as...
Hydrogen is regarded as the energy source of the future: It is produced with solar power and can be used to generate heat and electricity in fuel cells. Empa researchers have now succeeded in decoding the movement of hydrogen ions in crystals – a key step towards more efficient energy conversion in the hydrogen industry of tomorrow.
As charge carriers, electrons and ions play the leading role in electrochemical energy storage devices and converters such as batteries and fuel cells. Proton...
Scientists from the Excellence Cluster Universe at the Ludwig-Maximilians-Universität Munich have establised "Cosmowebportal", a unique data centre for cosmological simulations located at the Leibniz Supercomputing Centre (LRZ) of the Bavarian Academy of Sciences. The complete results of a series of large hydrodynamical cosmological simulations are available, with data volumes typically exceeding several hundred terabytes. Scientists worldwide can interactively explore these complex simulations via a web interface and directly access the results.
With current telescopes, scientists can observe our Universe’s galaxies and galaxy clusters and their distribution along an invisible cosmic web. From the...
Temperature measurements possible even on the smallest scale / Molecular ruby for use in material sciences, biology, and medicine
Chemists at Johannes Gutenberg University Mainz (JGU) in cooperation with researchers of the German Federal Institute for Materials Research and Testing (BAM)...
19.06.2017 | Event News
13.06.2017 | Event News
13.06.2017 | Event News
27.06.2017 | Power and Electrical Engineering
27.06.2017 | Information Technology
27.06.2017 | Physics and Astronomy