Species of July: Indiana Bat

Three Indiana Bat skins from the Tetrapod Collection.

Indiana bats from the Tetrapod Division

by Raymond Gonzo

There’s nothing like being outdoors on a warm summer night. The sunset, the fireflies, a barbeque all make summer nights truly magical. However, there is an important part of the summer night that you won’t hear too many people reminiscing about, bats flying overhead. Bats though play an important role in making these summer nights so pleasant and memorable, they feast on mosquitoes and help keep their numbers in check.

Here in the Tetrapod collection, we have several species of bats that have been preserved and placed in a glass container with labels for each individual so that we can show them to visitors. While any of the species that we have would make for interesting conversation, I feel that it would be most interesting to discuss a species of bat that is both unique and important to the Midwest and Ohio, the Indiana Bat.

Weighing the same as approximately three pennies and with a wingspan just under one foot, the Indiana Bat (Myotis sodalis) is quite small . Despite being small, these bats can have a large impact: they are capable of eating half their body weight in insects per night and when you do the math, a bat can eat 3.75 g of mosquitoes which amounts to roughly 1,500 mosquitoes at 2.5 mg each. Thus bats are highly valuable in pest control. Like all bats, the Indiana Bat will hibernate during the winter when there are no insects to be found. These bats hibernate in very large clusters and, like their Latin name (sodalis, meaning companion) implies, are very social. When hibernating bats slow their metabolism, heart rate and breathing rate to extremely low levels to conserve energy. Given that they cannot refuel during the cold months, their energy reserves are finite and any unnecessary movement will cause them to burn more of their fat reserves than they can afford to lose. Thus during hibernation, bats absolutely cannot be disturbed. This will cause the bats to starve and die before the warmer weather with replenished food supplies returns. To find out more about the Indiana Bat in particular, you can visit the U.S. Fish and Wildlife Service’s website.

The Indiana bat, has been endangered since 1967. One of the reasons is disturbance during hibernation. There are a few different causes for disturbance of the bats’ hibernation, but the biggest threat nowadays may be white-nose syndrome.

The white-nose syndrome is a fungus that was introduced to North American caves by European spelunkers sometime in the early 2000’s. The fungus causes a white patch to grow on the bats’ nose, hence the name; this irritates the bat and may alter its behavior. Bats with this syndrome have been observed flying around in the middle of the winter, burning more fat than they normally would, which ultimately leads to death by starvation. This disease has already killed millions of bats across the U.S. and Canada and according to some researchers, it may continue to do so before we will see improvement.

According to a study conducted by Wayne E Thogmartin et al (2013) the population of the Indian Bat will be ravaged by white-nose syndrome over the next century. The study conducted was able to predict the rate at which bats will die off should conditions continue as they are, and they’ve found that the Indiana Bat will survive into the next half century, but at greatly reduced numbers. There is, however, the chance that the bats will develop immunity to the fungus, which could turn things around.

Bats of all species (the Indiana bat included) are dying due to the white-nose fungus’ rapid advancement. If we lose these bats, then we lose a very effective regulator of insect populations. The good news is that there are many ways you can help bats, starting in your own backyard in order to make it more inhabitable for bats. You can also support an organization that is working to save bats (e.g. the organization for bat conservation), and you can attend programs to learn more about bats.

At OSU Marne Titchenell, Wildlife Extension Program Specialist has studied bats and knows about their ecology and management. Marne and other naturalists periodically give talks on bat conservation at local metro parks. This weekend, join a Journey into Nature with Bats at Glacier Ridge Metro Park on Saturday July 25th at 8pm or take a bat walk at Blacklick Woods Metro Park on July 31st. Happy bat watching!

References

Thogmartin W.E., Carol A.S.R., Szymanski J.A., McKann P.C., Pruitt L., King R.A., Runge M.C., Russell R.E. 2013 White-nose Syndrome Is Likely to Extirpate the Endangered Indiana Bat over Large Parts of Its Range. Biological Conservation 160, 162-72. http://www.sciencedirect.com/science/article/pii/S0006320713000207

“Indiana Bat (Myotis Sodalis).” USFWS: Indiana Bat (Myotis Sodalis) Fact Sheet. U.S. Fish and Wildlife Service, 18 May 2015. http://www.fws.gov/midwest/endangered/mammals/inba/inbafctsht.html

“White-Nose Syndrome (WNS).” USGS National Wildlife Health Center –. U.S. Geological Survey, 13 Mar. 2015. http://www.nwhc.usgs.gov/disease_information/white-nose_syndrome/

Bruce, Heidi, and Shannan Stoll. “How to Save Bats in Your Own Backyard.” YES! Magazine. YES! Magazine, 17 July 2012. http://www.yesmagazine.org/issues/making-it-home/how-to-save-backyard-bats

Species of the Month: Cane Toad

Picture of Cane Toad

Adult Cane Toad

by Raymond Gonzo, OSU zoology major

The other day I was working in the Amphibian section of the Tetrapod collection, when I saw two toad specimens that really stood out to me. The toads were almost the size of a Coke can, which is bigger than the American toads that you may find in your backyard. Another interesting thing I noticed about these toads was the fact that one specimen was collected in Fortin de las Flores, Mexico, and the second specimen came from Australia. How is it that these two specimens were collected on different sides of the planet? On the jars they were labeled Rhinella marinus, which struck a cord with me. I had heard that name many times before, but I couldn’t remember from where. A quick check through the Tetrapod Collection’s curatorial database revealed that the amphibian in question was none other than the infamous Cane Toad.

The Passenger Pigeon that I wrote about last month was a species that declined in numbers and went extinct due to human activities. The cane toad, Rhinella marinus, is an example of the opposite effect, a species that proliferates with human help.

Until the 1930s, the cane beetle, an Australian native whose larvae feast on the leaves of sugar cane, did excessive damage to the sugar cane crop. In order to control the beetle population, the cane toad was released as a new predator. The idea being that this toad would feast on the beetles and thus protect the sugar cane crop. However, it did not work out as planned, the cane toad became a major pest in itself.

Instead of controlling the beetles, the toads began eating everything in sight, which allowed them to thrive and reproduce at an alarming rate. If that weren’t enough, the toads are highly poisonous and release a deadly toxin if a predator, who has not evolved defense strategies against cane toad toxin, should try to eat them. In the Americas, there are predators who can eat the toads and consequently keep their population in check. For example, there are many crocodilian reptiles, snakes, and various species of fish that are both immune to the toxins and can be found in the toads’ natural habitat. Many Australian predators of frogs and toads are unfamiliar with the toxins and cannot tolerate them, which means they will often die from eating a cane toad. This has given the toads a chance to drastically increase in numbers. Interesting fact, the cane toad is in the same family (Bufonidae) as the American toad, Anaxyrus americanus, an example of related species having a very different effect on their environment, especially when displaced.

However, as recent studies show, over time species may evolve the ability to either recognize and avoid cane toads or be able to tolerate their toxins. In 2004, Ben Phillips and Richard Shine demonstrated that some Australian snake populations that are at risk of death by the cane toad have adapted to living with the invaders. The authors of this study found that snakes increased in size in areas where they co-exist with cane toads. Small individuals face a much higher risk of fatal poisoning by toads, thus over time this species has been selected for large body size. More recent studies have shown that spiders and ants may also help keep cane toad numbers in check. If you are interested in finding out more read this article in the Australian Geographic. You can also read the study conducted by Phillips and Shine.

There are hundreds of instances where animals from one part of the world are introduced to another area, and often times there are disastrous consequences. A local example of this is the Emerald ash

borer. The ash borer is a native to China, but turned into an invasive pest of ash trees in North America. Here at the Ohio State University, much research is being done on the impact these beetles are having on the local Ohio ecology. More information on the control of this pest can be found here.

When it comes to trying to control nature, mankind has a pretty mixed track record of both successes and failures. Invasive species such as the Norway rat, the feral pig, and the ball python are all examples of how carelessness can lead to the destruction of an ecosystem. The Cane Toad is just one in a long line of destructive invasive species, and with the increased inter-continental travel of the modern world, it certainly won’t be the last.

 

References

Phillips, B. L., and Shine R. 2004 Adapting to an Invasive Species: Toxic Cane Toads Induce Morphological Change in Australian Snakes. PNAS 101, 17150-7151.

http://www.pnas.org/content/101/49/17150.full

 

Observations from the Freshman-Brought to you by Raymond

If I said that I had planned to work at The Ohio State University’s Museum of Biological Diversity from the beginning of my college career, I’d be lying. If I said that I was aware of the museum’s existence before last October, I’d still be lying (I know. I’m just the worst).

If I were to spin a yarn about how I first got started at the museum, it would begin last semester when I was frantically searching for an undergraduate research position. As a zoology major entering my third year of college, I thought to myself, I should probably start getting zoology work related experiences to put on my resume and undergraduate research seemed the most appealing. The problem is that Sasquatch is easier to find than a professor doing zoology-related research and who is looking for an undergraduate to participate. So after much searching, emailing, crying, etc… I asked the undergraduate research office where I could go to find said professors looking for undergraduate workers. They replied that most of researchers could be found, or have an office at the University’s Museum of Biological Diversity.

Upon hearing this, my initial thought was, “We have a Museum of Biological Diversity?” My second thought was, “We have a Museum of Biological Diversity and I’m just hearing about this now?”  I took a bus out to Carmack Corner, walked up a dirt road and found this place on the very edge of the University’s land. When I first discovered the museum, I was so incredibly intrigued and excited about what could be inside. Upon further investigation however, I was incredibly disappointed to see it wasn’t an “actual” museum but more akin to the warehouse from the end of Raiders of the Lost Ark.

A picture of OSU's Museum of Biological Diversity. A very plain looking brick building.

There is the building in all its glory. When I say that this museum is out of the way, I mean it is really at the far western end of campus.

It wasn’t until the beginning of this semester that I had heard about the museum’s annual open house. I had been told that this is the one day of the year that the museum resembles the general public’s view of what an actual museum rather than a warehouse, so I decided to attend. The open house was a wonderful experience for a zoology major, such as myself. After entering the building, I was soon surrounded by specimens of exotic and colorful birds and skeletons from a wide variety of different animals. After seeing all this awesome stuff, I thought to myself, “Gosh wouldn’t it be just swell to work/intern/volunteer here?” So I had met with the curator, Dr. Angelika Nelson, and began to volunteer my time labeling and organizing specimens in the museum’s Tetrapod collection.

So it’s been a little over a month since I started at the museum (I refer to myself as a freshman for a reason) and now I have a chance to really look back and reflect on what I’ve done so far. All that I’ve really done (again, I’ve only been here a month) is print labels, organize loans, do some geo-referencing and maybe (if I should be so lucky) count how many 100-year old hummingbirds we have in our collection. Make no mistake; museum work is not for everybody. At times it can seem like long, tedious and mind-numbingly boring work.

But I love every minute of it.

I’m sure that if the average person were to come to the museum and try to do what it is that we do there, they’d either recoil in disgust or fall asleep from boredom. And that’s fine, it’s not everybody’s cup of tea. For me however, working at the museum is one of the greatest jobs I’ve ever had. Animals, in general, just wholly fascinate me and I grew up watching the old Animal Planet. When I printed labels for specimen cabinets, I got to look at some of the most exotic and unique bird species I’ve ever seen. Not to mention that I got to touch three of the endangered bird species the Tetrapod collection possess: an Ivory-Billed Woodpecker, a Passenger Pigeon and a Carolina Parakeet (I can die happy now). Working there is basically nirvana for a guy like me.

A head on picture of the Tetrapod Collection's Ivory Billed Woodpeckers.

Not going to lie… These are the most exciting specimens I have seen so far.

While working at the museum is incredibly fascinating and fun, I’d be lying (again) if I said there was only one reason why I love it there. Going into the museum and doing all this science-related work makes me feel like I’m getting closer to actually being a zoologist. For anyone who is a zoology major at OSU, I don’t need to tell you how difficult the major program is. I spent the first two years of college trying my absolute hardest just to get through the math requirements (don’t even get me started on that ungodly chemistry program). So working here (along with actually doing major courses) makes me feel as though I’m becoming a “big kid” in my field.

I’ve often said that the greatest decision that I ever made was joining the Boy Scouts. However, I think I may have topped myself by choosing to work at this museum. I love the work that I do in the Tetrapod collection and it helps me feel as though I’m actually doing something worthwhile with my time. If you’ve enjoyed reading about my experiences, then you’re in luck. My latest responsibility for the museum is to write more of these blog posts, so the fun never has to end. Until next time dear reader.

Raymond is one of our newest volunteers in the Tetrapod Collection who will be interning with us this coming fall. His current projects here included working with our amphibian and reptile collection.

Meet Willoughby, a Florida manatee

Thanks to Andy Yoak, graduate student in EEOB, we now have an articulated skeleton of a manatee on display in the collection! Visit her during our annual Open House on Saturday, February 7th (more information about this event soon!)

Willoughby, an 11-year-old female Caribbean manatee, was donated by the Columbus Zoo and Aquarium. The animal was rescued from the St. Lucie River in Florida after being struck with a propeller from a watercraft in June 1995.

Several bones of the skeleton were missing and we were able to 3-D print some of them and give Willougby a unique look. The assembly process of this skeleton has been captured with a GoPro camera and you can watch the video on YouTube.

skeleton of a Florida manatee

Note the part of the lower left jaw that was reconstructed through 3-D printing

lateral view manatee skeleton

Note the right shoulder blade which was reconstructed through 3-D printing

Cool facts about manatees

You may know  manatees under their alternate name sea cows which is inspired by their slow pace when grazing underwater. Powering themselves with their strong tails, manatees typically glide along at 5 miles/hr.  They eat water grasses, weeds and algae, and lots of them to keep up their massive bodies. An adult manatee weighs on average 800-1,200 pounds at a length of 8-10 feet and feeds 6-8 hours each day.

Despite their bulk, manatees actually have very little fat under their skin which makes them very sensitive to water temperature changes and intolerant to cold waters (below 68 degrees).

Boating collisions are the number one killer of manatees. They are killed by impact injuries from physical force of a boat traveling at a high rate of speed as well as by rotating propellers.

You can find more facts about manatees and how to help them survive here.  To see a life manatee, visit the Columbus Zoo and Aquarium.

Museum specimens inspire artist

Last night (24-January-2015) was the opening of Samantha Parker Salazar’s new show Malleable Matrices at the OSU Urban Arts space in downtown Columbus. Anna Smith, Emily Archibald and myself followed Samantha’s invitation to the reception.

Samantha is a recipient of the John F. Fergus Family Fellowship, and a printmaking lecturer at The Ohio State University. She is known for her intricate cut-paper installations. One of her new pieces, Waking Red, is a vortex of cut forms and vibrant colors. It features images of amphibians and reptiles which she photographed at the OSU Tetrapod collection last December.

intricate cut-paper installation

Waking Red by Samantha Parker Salazar

detail of Waking Red

detail of Waking Red

You can visit the exhibit through Thursday, January 29, 2015 at the OSU Urban Arts Space
at 50 West Town Street, Columbus, OH 43215

Keeping the collection alive

You may think that a collection of dead animals does not require much work. You may want to rethink this, because every specimen needs to be cataloged, geo-referenced, i.e. we try to find the exact geographic location where it was found. We need to keep out insects that may cause severe damage to our specimens by eating them up, people want to borrow specimens for teaching, research and arts projects. These are just some of the tasks; we are also still adding new specimens to the collection. This collection would not be functioning without the help of some undergraduate students. Meet the team currently working in the collection:

Emily Archibald, an Evolution and Ecology major, has been mainly interested in the mammal collection and is re-organizing our many coyote skulls for teaching and research.

Emily and coyote skulls

Emily with some of the organized coyote skulls

Stephanie Malinich graduated from OSU last spring, but she discovered her love for museum work as a student. She has been back as the “bird-skinner in-charge” since September. Stephanie has learned how to prepare museum study skins through some workshops with Dr. Jackie Augustine at the OSU Lima campus. She is always looking for new challenges, her newest project: preparing a skeleton of a Red-tailed Hawk with one spread wing.

Stephanie and Great Horned Owl

Stephanie while preparing a Great Horned Owl

Rebecca Price, a Zoology major, has come to the collection as a volunteer. She has since taught herself the skill of bird study skin preparation and is now working together with Stephanie. Just recently she prepared a Pileated Woodpecker!

Rebecca and Mallard

Rebecca cleaning the head of a Mallard

Anna Smith, a Molecular genetics major, discovered the tetrapod collection as a volunteer for our Open House last year. She has since re-organized the mammal teaching collection, labelled many skulls and bones as well as newly prepared bird skins.

Anna writing specimen labels

Anna writing labels for some of the newly prepared study specimens

Curator of tetrapods

As the curator of the tetrapod collection I am often being asked what the collection is used for and who uses it. The answer is simple, specimens are used for research and teaching as well as art projects and the users come form a wide range of agencies, organizations, schools and universities.

So what are tetrapods anyway? For those of you who speak Greek or Latin, this is no mystery, tetra means four and pedes means feet, so all animals that have in their current or ancestral state four limbs. Yes, birds are included too, wings being their second pair of limbs.

How old are the specimens? Some of them, especially among the birds, are from the 18-hundreds, others are very recent. Just today an American Woodcock was added to the collection. Not quite added yet, this bird must have hit a window and died, so we put it into our freezer where it joined hundreds of other birds that are awaiting their promotion to museum specimen.

You will learn about techniques how we prepare birds and other animals in some later posts.

dead American Woodcock

American Woodcock found by Oleksandr Zinenko