Long-term thermal imaging video surveillance records how disease affects hibernating bats

first_imgcameras, Monitoring, Research, Technology, Wildtech Popular in the CommunitySponsoredSponsoredOrangutan found tortured and decapitated prompts Indonesia probeEMGIES17 Jan, 2018We will never know the full extent of what this poor Orangutan went through before he died, the same must be done to this evil perpetrator(s) they don’t deserve the air that they breathe this has truly upset me and I wonder for the future for these wonderful creatures. So called ‘Mankind’ has a lot to answer for we are the only ones ruining this world I prefer animals to humans any day of the week.What makes community ecotourism succeed? In Madagascar, location, location, locationScissors1dOther countries should also learn and try to incorporateWhy you should care about the current wave of mass extinctions (commentary)Processor1 DecAfter all, there is no infinite anything in the whole galaxy!Infinite stupidity, right here on earth.The wildlife trade threatens people and animals alike (commentary)Anchor3dUnfortunately I feel The Chinese have no compassion for any living animal. They are a cruel country that as we knowneatbeverything that moves and do not humanily kill these poor animals and insects. They have no health and safety on their markets and they then contract these diseases. Maybe its karma maybe they should look at the way they live and stop using animals for all there so called remedies. DisgustingConservationists welcome China’s wildlife trade banThobolo27 JanChina has consistently been the worlds worst, “ Face of Evil “ in regards our planets flora and fauna survival. In some ways, this is nature trying to fight back. This ban is great, but the rest of the world just cannot allow it to be temporary, because history has demonstrated that once this coronavirus passes, they will in all likelihood, simply revert to been the planets worst Ecco Terrorists. Let’s simply not allow this to happen! How and why they have been able to degrade this planets iconic species, rape the planets rivers, oceans and forests, with apparent impunity, is just mind boggling! Please no more.Probing rural poachers in Africa: Why do they poach?Carrot3dOne day I feel like animals will be more scarce, and I agree with one of my friends, they said that poaching will take over the world, but I also hope notUpset about Amazon fires last year? Focus on deforestation this year (commentary)Bullhorn4dLies and more leisSponsoredSponsoredCoke is again the biggest culprit behind plastic waste in the PhilippinesGrapes7 NovOnce again the article blames companies for the actions of individuals. It is individuals that buy these products, it is individuals that dispose of them improperly. If we want to change it, we have to change, not just create bad guys to blame.Brazilian response to Bolsonaro policies and Amazon fires growsCar4 SepThank you for this excellent report. I feel overwhelmed by the ecocidal intent of the Bolsonaro government in the name of ‘developing’ their ‘God-given’ resources.U.S. allocates first of $30M in grants for forest conservation in SumatraPlanet4dcarrot hella thick ;)Melting Arctic sea ice may be altering winds, weather at equator: studyleftylarry30 JanThe Arctic sea ice seems to be recovering this winter as per the last 10-12 years, good news.Malaysia has the world’s highest deforestation rate, reveals Google forest mapBone27 Sep, 2018Who you’re trying to fool with selective data revelation?You can’t hide the truth if you show historical deforestation for all countries, especially in Europe from 1800s to this day. WorldBank has a good wholesome data on this.Mass tree planting along India’s Cauvery River has scientists worriedSurendra Nekkanti23 JanHi Mongabay. Good effort trying to be objective in this article. I would like to give a constructive feedback which could help in clearing things up.1. It is mentioned that planting trees in village common lands will have negative affects socially and ecologically. There is no need to even have to agree or disagree with it, because, you also mentioned the fact that Cauvery Calling aims to plant trees only in the private lands of the farmers. So, plantation in the common lands doesn’t come into the picture.2.I don’t see that the ecologists are totally against this project, but just they they have some concerns, mainly in terms of what species of trees will be planted. And because there was no direct communication between the ecologists and Isha Foundation, it was not possible for them to address the concerns. As you seem to have spoken with an Isha spokesperson, if you could connect the concerned parties, it would be great, because I see that the ecologists are genuinely interested in making sure things are done the right way.May we all come together and make things happen.Rare Amazon bush dogs caught on camera in BoliviaCarrot1 Feba very good iniciative to be fallowed by the ranchers all overSponsored A group of warming Indiana bats are watched by thermal imaging surveillance in an Indiana cave. Image courtesy of: Paul Cryan, USGS. White-nose syndrome alters how and when bats arouse from hibernation, and millions of bats have died since the disease emerged in 2006.Researchers adapted widely used thermal imaging video technology to monitor caves of hibernating bats for complete winters to determine the extent of impact of white-nose syndrome without disturbing the animals’ hibernation patterns.The researchers’ long-term monitoring found that the bats’ arousal patterns have, in fact, been affected. However, the animals may have found a way to adapt to the disease. Visual technology is a key tool for wildlife research and conservation at various spatial scales, as shown by the development of camera traps, live video feeds, high-speed videography and satellite imagery, among many others. However, studying species in the dark requires its own technology, and thermal imaging has emerged from the shadows.Thermal imaging (TI), also referred to as infrared thermography, detects infrared energy, which people, animals or objects emit. The energy increases or decreases with changes in the object’s temperature.The technology senses slight differences in energy and presents them as a range of colors in a photograph or video, called a thermogram. The higher the object’s temperature, the brighter it shows on the image. Dr. David Hayman and a multi-institutional team of researchers used TI technology to perform long-term surveillance of hibernating bats in North America to determine how they stir from hibernation. They conducted their study to increase understanding of how the animals’ hibernation behaviors relate to threats, such as disease.The U.S. military first developed TI for various nighttime purposes, and it has become increasingly available for other uses, including research. Providing the capacity to see at night is especially useful for studying nocturnal, hibernating or cryptic species that are otherwise difficult to observe. It also eliminates the challenge of having to introduce an intrusive light into the study area.The technology is more reliable than several widespread methods, such as night vision goggles or spotlights, which scientists typically use to view nocturnal animals. In a 2001 study that compared the use of spotlights and TI, researchers with spotlights observed roughly 54 percent of animals observed by those using TI.Video surveillance of wild animals has become a key tool in studying their behavior, and thermal imaging gives researchers the ability to view animals that are active in the dark.“Video is a potentially powerful way to [capture crucial moments among wildlife],” Hayman said. “Video technology may allow us to understand everything, from which species predate endangered species, to when disease transmission may occur, when poachers are active and how animals respond to human disturbance.”Studying a disease-threatened animalBats contribute to ecosystems around the globe through several means, including plant pollination and seed dispersal. They are also a major predator of nocturnal insects.The threats to bats differ from area to area and include habitat loss, direct killing, disease, and wind turbines. A major threat to bats is the white-nose syndrome (WNS), which scientists estimate has killed several millions of bats from five species across North America, where it first emerged in 2006.A bat in the Great Smokey Mountains National Park with white-nose syndrome (WNS). Photo by: U.S. Fish and Wildlife Service.However, no strategies to combat the disease have been introduced, in part because bats’ habits of feeding at night and hiding during the day make them a challenge to study.Some bats also need to hibernate in caves to survive harsh winters. According to the study, this strategy for survival is at risk due to WNS.The WNS fungus (Pseudogymnoascus destructans) infects the hibernating bats’ skin, causing physiological imbalances which, the study says, “influence hibernation behaviors to the degree that sick bats arouse (metabolically warm up their bodies) from hibernation too frequently and deplete stored body fat needed for survival.”The research team collected 740 days’ worth of TI video, focusing on little brown bats (Myotis lucifugus) and Indiana bats (M. sodalis) in Virginia and Indiana, USA, to detect increases in arousals during winter months among infected bats. The researchers chose these locations based on previous data that showed infection prevalence among the hibernating bats.Body temperatures of hibernating bats drop to just above surrounding air and rock temperatures. Bats that arouse from hibernation will be warmer and thus show up differently in a thermal image than those that are still hibernating.A little brown bat with white-nose syndrome hibernates in a Virginia cave during late spring of 2016. Patches of the fungus that causes white-nose syndrome can be seen growing out of the skin (white areas) near the nose and across the folded wing skin of this bat. Photo by Paul Cryan, USGS.The study found that bats with WNS do arouse more than other bats during hibernation, but, for the Indiana bats, their arousals unexpectedly synchronized with the other bats within the cave.“The numbers of this species of bat in this cave seemed to be declining less than expected, and therefore we wonder if this synchronous arousal is an adaptation that allows this species to use less energy over winter.”The researchers are not positive of their hypothesis because bat behaviors are still relatively unknown, but Hayman encourages other scientists to use thermal imaging for observing bats to determine if this behavior occurs elsewhere.Using TI for long-term observation of batsTo compile the 17,760 hours of video over entire winters, the team used durable video cameras that are often used for surveilling properties or car lots and could be used in the caves for long period of time. The researchers streamed the video imagery to portable computers that the researchers could control via units set up at the cave entrances.The following video is of a sped-up time-lapse TI video of the hibernating Indiana bats in Indiana, USA. Bright areas show the warming and active bats:“The greater issue was actually being able to connect them to laptops in caves that enabled us to save all the video for such long periods,” Hayman said. “This required custom-made weather-proof cases to be built. Together, this enabled cameras and computers to be left in the caves for months.”The team applied technology widely used in other fields and available online for a few hundred dollars. As the TI video technology advances, Hayman said that he expects the prices to decrease. The team used video editing software that is free or already widely used, and the MATLAB® computer codes are free.Hayman believes other researchers can easily access the technology used in this study.“The difference is that we used cheaper, easily available videos [cameras] and developed software to be able to monitor the bats for complete winters,” Hayman said. “This means that we could analyze data from within the cave recorded over many winters without disturbing the bats.”The research team was unable to identify individual bats, which limits what the data can infer. They are, however, currently analyzing data from near-infrared video that was simultaneously collected with the TI video to better understand what the bats were doing while active.Additionally, they suggest future research in studying how bats use the cave’s local microclimates over the winter and how using them strategically can help the bats’ adapt to WNS.A little brown bat with white-nose syndrome on its nose and wings hibernates in Greeley Mine, VT. Photo by: U.S. Fish and Wildlife Service.“If the bat species that have been most affected by white nose syndrome can survive over winter by using microclimates that are less suitable for the fungus to grow, I think there might be more hope for these species than if they are so adapted to those microclimates that the fungus also grows well in,” Hayman said.Monitoring the behavior of bats and other animals over long time periods is crucial to determining how they interact with each other and their environment and helping scientists understand the transmission of zoonotic disease.Banner image is of a group of a group of bats with white-nose syndrome hibernating on a cave ceiling. Photo credit: Government of Alberta, Creative Commons.CitationsBelant, J.L and Seamans, T.W. (2000). Comparison of 3 Devices to Observe White-Tailed Deer at Night. Wildlife Society Bulletin. 28(1), 154-158Blackwell, B.F., Seamans, T.W., and Washburn, B.E. (2006). Use of Infrared Technology in Wildlife Surveys. The USA’s Dept of Agriculture, APHIS Wildlife Services.Focardi, S., DeMarinis, A. M., Rizzotto, M., and Pucci, A. (2001). Comparative evaluation of thermal infrared imaging and spotlighting to survey wildlife. Wildl. soc. bull. 29(1): 133-139.Frick, W.F., Puechmaille, S.J., and Willis, C.K.R. (2015). White-Nose Syndrome in Bats. Bats in the Athropocene: Conservation of Bats in a Changing World. 245-262.Hayman, D.T.S., Cryan, P.M., Fricker, P.D., and Dannemiller, N.G. (2017). Long-term video surveillance and automated analyses reveal arousal patterns in groups of hibernating bats. Methods Ecol Evol., 00, 1–9.Hristov, N.I., Betke, M., and Kunz, T.H. (2008). Applications of thermal infrared imaging for research in aeroecology. Integrative and Comparative Biology, 48(1), 50–59. A group of browns bats hanging from the cave ceiling are imaged by a digital camera. Photo credit: National Park Service. Article published by dbettermannlast_img read more