I wholeheartedly applaud Atlantic Monthly’s defense of bats at a time when so many other publications are spreading grossly exaggerated stories attempting to link bats to some of the world’s rarest but also scariest diseases. Bats have never needed help more, nor have we needed them more! As the one who persuaded the citizens of Austin to protect instead of eradicating its now world-famous colony, I’m proud to report that none of millions of tourists who come to enjoy their spectacular emergences has ever been harmed. By simply leaving bats alone (not attempting to handle them), we have exceedingly little to fear and much to gain. Our bats eat tons of crop and yard pests every summer night and attract millions of tourist dollars each year.
Thanks to people who increasingly understand and help bats, even those species most devastated by WNS are gradually beginning to recover. The only cure will come from improved protection and restoration of key bat habitats, especially their hibernation caves. It’s far too late, as well as impractical, to find a cure for WNS. Going forward, all resources should be devoted to recovery.
We invite everyone to share praise and encouragement via email or leaving a comment on the article page.
Photo caption: Tourists observing the emergence of 1.5 million Brazilian free-tailed bats from crevices beneath the Congress Avenue Bridge in Austin, Texas.
This summer saw the worst avalanche of grossly exaggerated disease speculation ever launched against bats. While seemingly countless publications world-wide needlessly frightened millions of readers, Mongabay journalist, John Cannon, investigated and bravely countered the tide in his article, “Bats and viruses: Beating back a bad reputation,” published August 29.
Mongabay is one of the world’s leading environmental websites. It reaches 28 million readers in nine languages annually, making its defense of bats especially helpful at a time when bats are facing so much scary misinformation. We’ve listed actions you can take to share your thanks at the end of this post.
Lesser long-nosed bats (Leptonycteris yerbabuenae) are primary pollinators of agave plants essential to annual production of tequila and mescal worth billions of dollars to the Mexican economy. But thousands at a time have been burned in their caves due to unfounded fear.
While leading news media, from The Wall Street Journal to Time magazine, were maligning bats with an unprecedented flood of scary stories threatening terrible disease pandemics, Merlin was busy setting the record straight.
A Terrifying Time for Bats By Merlin Tuttle
7/2/17
The past month has seen a virtual explosion of premature speculation presented as though it were now proven fact, much of it traceable to a single article titled, “Bats are global reservoir for deadly coronaviruses,” that appeared in the June 14, 2017 issue of Nature. We’ve already issued a Bat Flash alert responding to this article, and to predecessors, all apparently part of a single cleverly planned campaign.
An adult male Straw-colored fruit bat (Eidolon helvum) from Kenya. This is the species first blamed for the “index case” of Ebola in the 2014 outbreak in West Africa. The species was soon exonerated. In fact, it is so resistant to Ebola that it is an unlikely source. Recent studies suggest a source other than bats.
Sensational speculation has become widely cited as fact1, with spin-off damage that will be exceedingly difficult to reverse. All who truly care about bats have cause to be deeply concerned.
Due to scary speculation attempting to link the SARS outbreak of 2002 to bats, bats have recently become central in the search for viruses2. Thus, rapid advances in viral detection alone may have caused major bias. Also, the number of viruses found in bats is not necessarily indicative of risk.2 Many viruses are innocuous or even beneficial,3 including some that are closely related to deadly ones.4 Finally, the paper in question is based on models, and models are notorious for mistaken conclusions, regardless of the amount of data analyzed.5
A far more meaningful analysis should have considered the historic rarity of viral spillover from bats to humans. Many media stories now claim bats to be the primary source of so-called “emerging infectious diseases” like Ebola, though most of these speculations remain unproven.6- 7
Thai women collecting guano in Rakang Cave. These women spend countless thousands of hours sweeping up the guano and bagging it while being pooped on by hundreds of thousands of fruit- and insect-eating bats high overhead and report no ill effects.
Proponents of such speculation still cannot explain why hundreds of bat biologists, millions of people who eat bats, and the millions more who share cities with huge bat colonies are no less healthy than others. They can’t explain why bats artificially infected with Ebola haven’t become contagious or why virologists haven’t even been able to find live virus in the thousands of bats examined. Certainly, like all other mammals, bats must be capable of harboring at least a few dangerous viruses. Nevertheless, bats still have one of our planet’s finest records of living safely with humans.1
Children begin helping collect guano almost as soon as they can walk.
The June 12, 2017 story by Amy Maxmen, titled “Bats are global reservoir for deadly coronaviruses,” published in Nature, continues the needlessly sensational presentation of bats as exceptionally dangerous animals. By simple insertion of the words “global” and “deadly” in the title, it implies bats worldwide to be a serious menace to human health.
The article begins by stating that “Bats are the major animal reservoir for coronaviruses worldwide….” In the reported study, nearly twice as many bats as rodents, shrews, and primates combined were examined, not surprising. The emphasis on easily captured bats, likely centered on colonial species, is an approach that appears to have become the norm. And it’s impossible to know the extent of resulting bias.
A Chinese horseshoe bat (Rhinolophus sinicus) from Hong Kong. It has been suggested that a coronavirus found in this species is the direct ancestor of the virus that causes SARS. Nevertheless, despite seemingly endless speculation, no experiment has ever shown these, or any other bats, to be capable of transmitting a coronavirus to primates or other animals.
Late in the article, it is admitted that at least some of the newly discovered coronaviruses pose no “immediate threat to human health,” though insertion of the word “immediate” still implies they may be in the future. Because only a small fraction of coronaviruses infect humans, diversity in bats is not necessarily an indicator of risk.
At the end, where least likely to be noticed, it is admitted that such exhaustive searches for new viruses may be a waste of resources. Dr. Michael Osterholm, Director of the Center for Infectious Disease Research and Policy at the University of Minnesota in Minneapolis, is quoted as saying “that researchers and politicians should direct their limited resources towards halting new outbreaks of pathogens that are known to be deadly in people, rather than trying to predict which virus will be the next to cross over to humans.”
Osterholm is further quoted that “We aren’t much better prepared for Ebola today than we were during the crisis in West Africa, so you have to wonder if we aren’t preparing for the outbreaks we know will happen in the near future, what good does it do to know about spillover events?”
Since bats appear to have an exceptionally good record of not causing disease outbreaks in humans, even where large colonies share major cities with us, Osterholm’s point seems strong.
TAKE ACTION!
Choose any or all means of contact to reach out and share your opinion about this unfair bias against bats in your own words.
Email the editor. Be sure to include the article and author information.
nature@nature.com, journal editorial office, Editor, Sir Philip Campbell
The Chinese Horseshoe Bat ranges from northern India to southern China. Horseshoe Bats are so named due to their horseshoe-shaped nose-leaves. They are often found in caves or cave-like locations and feed mostly on small moths. They use exceptionally high frequency echolocation to avoid detection by moths that listen for bat sounds, thereby attempting to avoid capture. This one is eating a moth in flight.
Virologists are still doggedly pursuing the search for an Ebola reservoir in bats, as reported in the storytitled Hunting for Ebola among the Bats of the Congo in the June 1, 2017 issue of Science (Kupferschmudt 2017), apparently attempting to ignore mounting evidence pointing elsewhere. The record of unsubstantiated speculation, attributing Ebola to bats is long and becoming an embarrassment to good science.
By 2014, researchers had discovered that 10% of gorillas in Central Africa have antibodies to Ebola, demonstrating that exposure or infection is not uniformly lethal as previously reported (Reed et al. 2014). Because great apes were said to be highly susceptible, virologists had insisted they couldn’t serve as reservoirs. Instead they pointed to bats.
A hammer-headed bat (Hypsignathus monstrosus) eating a rose apple (Eugenia jambos) in Ivory Coast. This species is now the central focus of the Ebola reservoir search reported in Science. It is a key seed disperser in areas in need of reforestation.
Countering a huge, international disease scare campaign against bats is extremely challenging, but thanks to the loyal support of our uniquely dedicated members the truth is being heard, as seen in this week’s issue of Slate magazine. We are unfortunately still the only conservation organization brave enough to counter this international campaign backed by hundreds of millions of dollars. Promoters of fear are increasingly portraying themselves as bat conservationists attempting to help bats. They say bats are valuable and shouldn’t be killed, but their grossly exaggerated disease warnings remain deadly, no less than back in the 1970’s and early 1980’s when nearly everyone in America was led to believe that most bats were rabid. The impact on conservation efforts was devastating. States with the most indefensibly large rabies budgets led the propaganda, aided by unscrupulous pest control companies. However, states where health departments intensely publicized bats as dangerous achieved no reduction in human rabies compared to states that simply advised evaluation of all animal bites.
Too few of us today remember that, after Rachael Carson got DDT outlawed for general use in America, our CDC insisted on obtaining a special exemption so it could continue to use DDT to kill bats in buildings. Even now, our CDC has a policy that Canada and the State of Oregon have rejected, based on independent scientific evaluation.
A large proportion of remaining bats have had to take refuge in buildings, having lost their traditional roosts in caves and old growth forests. Yet I’m seeing a gradual return to the days of big bat business for exterminators. Now, they try to look like conservationists by including mention of how beneficial bats are and advising that they should not be killed while simultaneously attempting to scare people into hiring their eviction services, which less conspicuously still kills bats. With all the devastation already wrought by WNS in the U.S., the timing for intolerance couldn’t be worse.
Response to Smithsonian story, “Can Saving Animals Prevent the Next Deadly Pandemic?” Merlin Tuttle
5/9/17
Lorraine Boissoneault’s story, Can Saving Animals Prevent the Next Deadly Pandemic?, is clearly well intended. However, when it comes to fruit bats and Ebola it is based on outdated speculation that threatens serious harm to a group of mammals that is already in alarming decline. For a summary of current knowledge of bats versus Ebola and other rare, but so-called emerging diseases, and their speculated association with bats, I refer you to my article in the current edition of Issues in Science and Technology, titled “Give Bats a Break.”
Diseases that are millions of years old, but that are just now being discovered due to their rarity, are being referred to as “emerging” as an apparent public relations ploy to make them sound more dangerous. And speculating associations with bats makes them even more scary, since many people already fear bats. This has proven unprecedentedly effective in gaining hundreds of millions of dollars in grants to support so-called virus hunters, who must continue speculating about potentially dire threats from bat diseases to keep their grants flowing.
Bats historically have one of the world’s finest records of living safely with humans, first in caves and thatched huts, then in log cabins.
Hundreds of thousands of Straw-colored fruit bats (Eidolon helvum) beginning their evening departure from a city park in Ivory Coast, Africa. Cities often provide the only homes safe from commercial hunters who sell them for people to eat. Despite such large numbers having lived in close association with humans throughout recorded history, they have not caused disease outbreaks. Their remarkable safety record casts grave doubt on recent speculation of their being dangerous carriers of disease.
Over the past decade a growing number of peer-reviewed research publications have reported likely-to-be-unsustainable bat kills at wind turbines, also reporting that kills could be reduced by 44-90% by slightly delaying turbine cut-in speeds (the wind speeds at which turbines are activated to begin rotating to produce energy) during the bats’ fall migration.
Merlin Tuttle and Jessica Kern examine bats killed by wind turbines in West Virginia, where Merlin led early efforts to minimize bat kills.
The best available calculations indicate that by implementing these changes, annual power output would be reduced by less than 1%. Yet only a few companies have acted on even these economically feasible recommendations, despite repeated warnings that whole species could be threatened with extinction without prompt action. Keim raises the obvious question, “how people already know so much about solving the problem, yet do so little.” The answer seems obvious—Too many people still don’t know, and too many of us who do have remained silent for too long.
Please take a moment to thank author, Brandon Keim, and the editorial staff at Anthropocene for reminding readers that alarming and growing numbers of ecologically essential bats are being killed needlessly by carelessly operated wind turbines.
TAKE ACTION!
Choose any or all means of contact to reach out and send thanks in your own words.
Send a Contact Form to Anthropocene Magazine. Be sure to include the article, author and editors by name when you thank them for their much needed reporting on bats.
A hoary bat (Lasiurus cinereus) in Texas. These bats are long-distance migrators, some traveling all the way from Canada to Mexico and back each fall and spring. Large numbers are now being killed needlessly by careless production of wind energy.
Sensational National Public Radio Story Threatens Bats By Merlin Tuttle
2/14/17
Unfortunately, the normally objective and reliable NPR, in its broadcast interview titled, Why Killer Viruses Are On The Rise, has joined in spreading irresponsibly sensational fear of bats. The interview with a “virus hunter” is set in a Bornean rainforest. In the preamble, the announcer notes that, “It’s where deadly viruses hide out, waiting their chance to leap into a person and then spread around the world.”
At a time when bats and rainforests are both in alarming decline, and in desperate need of protection, the program goes on to portray them in the scariest of terms. The reporter notes that rainforests “have lots of crazy animals” that “have lots of crazy viruses” and explains that what the virus hunter “really wants is to catch a bat.”
When the first bat is caught it is described as cute, but the reporter quickly points out that, “bats are arguably one of the most dangerous animals in the world. They triggered the Ebola outbreak in West Africa, the pandemic of killer pneumonia back in 2003, that was called SARS, and they’re behind one of the viruses scientists think could cause the next big one, Nipah.” This is unproven speculation reported as fact. But it gets even worse.
