Return to Paraguay: Conserving the Taguá, a Living Fossil

In 1972, mammalogist Ralph Wetzel and colleagues were studying armadillo ectoparasites in the Paraguayan Chaco when they came upon a peccary (what we call javelina in Texas) that didn’t look like those already known to science. The result was Catagonus wagneri – the Chacoan peccary, known only from a fossil discovered in 1930 by Argentinian paleontologist Rusconi. During the next two decades following this discovery, a cadre of various scientists ventured to Paraguay to learn everything they could about this rare living fossil. Some such as Jon Mayer and Phil Brandt went on to other careers, while others such as noted peccary biologist Lyle Sowls have passed on.

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Chacoan peccary or taguá (Catagonus wagneri).

I was fortunate in being the youngest of this earlier wave of scientists. In 2008, for my first blog ever for BEYONDbones, I wrote about my experience in the Paraguayan Chaco, fresh out of undergraduate training. Here is the part relevant to today’s blog, taken directly from the Introduction of the 2008 blog:

“I spent 1989-1990 studying a semi-captive baited herd of Chacoan peccaries (Catagonus wagneri), an endangered medium-sized mammal endemic to the Chaco biome of central South America; taguá is the Guaraní Indian word for this distant relative of the pig sub-order. They are extremely rare, and very few people ever see a live one in the wild. Writing this piece takes me back to a time when I accomplished a lot by knowing very little. Only in my early 20s, I did a lot of growing up during my stint in the Chaco – hot water, electricity, air-conditioning, phones, TVs, stereos, etc. were nonexistent in my life, but the fauna was diverse and abundant, and the studies I was able to accomplish during my time there paved way for a lifetime of disciplined work.”

In early February 2016, I received an invitation to attend an international workshop in Asunción (Paraguay’s capital) dedicated to creating an action plan for the taguá. I received this with very mixed feelings, having not worked intensively with taguá for nearly three decades since I was very young and very green. I contacted the workshop coordinator to express my concern, and she gently and politely let me know that it was her hopes to get all the taguá biologists, present and past, together in one room, where the young could learn from the older and vice-versa. After figuring out how to get to the meeting and get the necessary blessings and permissions, I was holding plane tickets to return to Paraguay…

When I first went to Paraguay in the late 1980s to work with taguá, barely a handful of people were interested in this endangered species, let alone conserving them. I was truly heartened to see that has changed at this workshop!  All the necessary stakeholders were represented at the meeting – not just scientists, but also indigenous Guaraní who depend on taguá for protein and the hide for other uses. Landowners and administrators who advise ranchers on integrating wildlife and ranching were present, including representatives from the Mennonite colonies (Mennonites occupy a good chunk of the range where taguá occur in Paraguay) and important government officials including the heads of National Parks for certain states.

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Geographic range of the Taguá in the Chaco of Bolivia, Paraguay and Argentina.

In total there more than 30 representatives from the range of the taguá (Argentina, Paraguay and Bolivia) as well as a few biologists from other countries who met from late February to early March for a week of intensive meetings. On the first day of the meeting, the taguá biologists worked on reviewing the taguá’s status and distribution, and generating a population viability and habitat suitability analysis (PVHA) using a computer modeling program called Vortex. Various life history parameters from data I collected as a youth were entered into the computer program, and it spat out the number of individuals necessary to conserve the taguá well into the future.

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During the remaining three days, participants worked on identifying a vision for the action plan based on the main primary threats to the taguá. Participants were separated into three break-out working groups (habitat loss, hunting, lack of knowledge) to determine isolating problems and goals and actions that address the main threats to the taguá. The latter group (lack of knowledge) also worked on identifying potential roles for captive breeding programs. Additionally, a network of committed professionals and institutions was created to put the recommendations and priority actions into practice.

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The habitat loss break-out working group.

I think everyone enjoyed getting to work with other like-minded people toward a common goal. It was a lot of fun reuniting with old friends after so many years, as well as building new friendships. Hopefully, the governments of Argentina, Paraguay and Bolivia will incorporate the action plan into their respective conservation planning.

Today, Juan Campos is the director of the project I worked on so many years ago. The project’s name has been changed to CCCI/Proyecto Taguá (translated: Chaco Center for Conservation and Investigations/The Taguá Project). Juan is a true gentleman and is doing some outstanding work!  We are currently making plans to collaborate on various projects.

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Juan Campos, left, with a current version of yours truly.

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Me circa 1989.

The man who initially sent me to Paraguay was Dr. Kurt Benirschke, who was one of the originators of the concept of breeding endangered species in captivity as a conservation tool. He is also the father of former San Diego Charger’s star kicker, Rolf Benirschke! Kurt instilled some great concepts in me at a very young age, like the one and only medicine you need in life is hard work. He used to tell wonderful stories of wildlife encounters he had in Paraguay and other areas. I remember on one such occasion he was telling me that just 25 years ago (some time around 1964), massive woolly spider monkeys or muriquis (Brachyteles arachnoides) lived in the tri-country region of I’guasu, but sadly the species had gone extinct. One of the most funny, yet very real and bittersweet moments of the week involved some storytelling of my own. Some of the younger biologists, newer yet already very experienced with Paraguay’s wildlife, were lamenting that black howler monkeys (Alouatta caraya) were now becoming extremely rare in Paraguay. I told them they were mistaken, since I remembered them from when I lived in Paraguay just 27 years ago. They were extremely common, even in the neighborhoods of Asunción, where it was possible to see them using utility lines to get around! My new, younger friends looked at each other with shock, then looked at me with suspicion, and cautiously informed me that howler monkeys disappeared from Asunción many years ago. Saddened by this, I realized that things had come full circle – another fantastic, large and charismatic vertebrate had become locally extinct in another span of roughly 25 years. Hopefully it won’t be too late for the taguá…

HMNS Unveils Ground-breaking Discovery: Soft Tissue from the Dinosaur Age!

Well, the news is out, and here’s the scoop. The Houston Museum of Natural Science is involved in the next great discovery in the world of paleontology. In the forests of Myanmar, scientists have unearthed several pieces of 99-million-year-old amber that contain some of the best-preserved prehistoric lizards ever found. These little creatures walked alongside Tyrannosaurus rex, but encased in fossilized tree resin, they seem perhaps days old. The skin and soft tissues, the color of their scales and even their tongues have all survived millions of years of geologic time.

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HMNS unveiled these specimens the morning of Wednesday, March 30, as part of our newest exhibit, Amber Secrets: Feathers from the Age of Dinosaurs. This announcement follows a social media buzz created by a paper published in Science Advances, written by Dr. Juan D. Daza of Sam Houston State University and co-authored by Dr. David Grimaldi of the American Museum of Natural History, curator of the Amber Secrets exhibit. The paper outlines the significance of this incredible discovery, crucial to a deeper understanding of the ecosystems of the mid-Cretaceous.

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Unlike most fossils important to paleontology that amount to little more than mineralized skeletons, these lizard specimens, measuring a half-inch to almost two and a half inches, offer tissue samples allowing scientists to get an intimate look at these extinct reptiles down to the cellular level. Using CT scanners and 3D printers, paleontologists can zoom in and reconstruct these specimens in high detail, creating fully articulated copies of these ancient animals for research.

The favorite of the collection is an ancestor of the modern chameleon. A curling tail and features of its skull suggest it may have fed and moved similarly, but were it preserved in rock, these details would have been lost. Through the golden lens of amber, this lizard, like the others, looks out at us from across the expanse of time.

These lizards aren’t the only rock stars of this exquisite collection of Burmese amber, also called Burmite. The collection opened Feb. 19 showcasing more than 100 specimens containing feathers, invertebrates, fungi and flora preserved with incredible detail. Using modern technology, paleontologists are learning more about the ecosystems in this cross-section of time than ever before. These faithfully-preserved samples of ancient life allow us to peer across deep time and discover proof that feathered creatures lived alongside Tyrannosaurus rex and Triceratops, and evidence that could explain the development of the relationship between angiosperms and pollinators. The solutions to scientific puzzles like whether dinosaurs had feathers and the exact era in which plant life began to develop flowers could be contained inside these beautiful gold-glowing fossils.

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Don’t just read about these amazing discoveries online; come meet these time-travelers for yourself, and learn the secrets they have to tell in Amber Secrets: Feathers from the Age of Dinosaurs while there’s still time. Open now through March 26, 2017.

Dispatches from the Gulf: Film examines the effects of Deepwater Horizon oil spill

The 2010 Deepwater Horizon disaster may no longer be a buzzword in the media, but the effects of history’s largest oil spill on the ecosystem of the Gulf of Mexico are still on the minds of marine scientists around the world. Gulf seafood seems to be recovering, but biologists are keeping a close eye to the seafloor, where much of the oil has settled into the sand. Take a closer look at the lingering effects of the spill Tuesday night at the Houston Museum of Natural Science with a special screening of the science documentary Dispatches from the Gulf.

This April 20 will mark the sixth year after the massive failure and subsequent explosion of the Deepwater Horizon, also known as the Macondo Prospect, an offshore drilling platform 50 miles off the coast of Louisiana. The blast claimed the lives of 11 workers and from a depth of 5,000 feet, pumped more than 200 million gallons of crude oil and natural gas into the Gulf over a period of 87 days. A month after the disaster, BP, the operator of the prospect, announced it would commit $500 million over 10 years to the study of the effects of the spill.

GULF OF MEXICO - APRIL 21:  In this handout image provided be the U.S. Coast Guard, fire boat response crews battle the blazing remnants of the off shore oil rig Deepwater Horizon in the Gulf of Mexico on April 21, 2010 near New Orleans, Louisiana.  An estimated leak of 1,000 barrels of oil a day are still leaking into the gulf. Multiple Coast Guard helicopters, planes and cutters responded to rescue the Deepwater Horizon's 126 person crew. (Photo by U.S. Coast Guard via Getty Images)

GULF OF MEXICO – APRIL 21: In this handout image provided be the U.S. Coast Guard, fire boat response crews battle the blazing remnants of the off shore oil rig Deepwater Horizon in the Gulf of Mexico on April 21, 2010 near New Orleans, Louisiana. An estimated leak of 1,000 barrels of oil a day are still leaking into the gulf. Multiple Coast Guard helicopters, planes and cutters responded to rescue the Deepwater Horizon’s 126 person crew. (Photo by U.S. Coast Guard via Getty Images)

In addition to the tragic loss of life, many environmentalists expected a total collapse of the ecosystem leading to further economic effects in the fishing and seafood industry, yet as early as five years later, CNN reported fish landings had returned as well as the oyster population.

“According to the Food and Drug Administration, tests on edible seafood show no excess hydrocarbons in the region’s food supply,” Drew Griffin, Nelli Black and Curt Devine of CNN.com reported. “The spill’s effects on other species are less clear. … But perhaps the greatest unknown is what, if anything, millions of gallons of oil on the deep seafloor are doing to the overall environment of the Gulf itself.”

Our own Associate Curator of Malacology Tina Petway is one of the scientists keeping watch. She flew over the disaster while the oil was still free-flowing, visibly bubbling above the surface of the water from the break at depth. To her, the Texas coastline is the least of her concerns.

The Deepwater Horizon disaster created an oil slick visible from space.

The Deepwater Horizon disaster created an oil slick visible from space.

“The oil can wash up in globs, which is bad for folks walking or playing on the beach,” Petway said, “but the real problem is that the oil stays in the environment even though they have removed a huge quantity of it. A lot of it has sunk.”

On the bottom of the Gulf, the oil has created a mat of tar, leaving the sand impenetrable to oxygen and light, Petway explained, eliminating everything beneath the mat from the habitat. Chemicals from the oil are leaching into sandy and muddy seafloors, making hydrocarbons difficult, if not impossible to dissolve or wash away.

“Just because you don’t see anything on shore anymore doesn’t mean it’s not still out there,” Petway said. “Ongoing research is being done as to the effects, and it is constantly being updated.”

Watch the screening of the science documentary Dispatches from the Gulf Tuesday, Feb. 9 at 6:30 p.m. in the Wortham Giant Screen Theatre at the Houston Museum of Natural Science. The film will recap the unprecedented response effort following the disaster and delve into the research of the Gulf of Mexico Research Initiative (GoMRI). Tickets $18, members $12. For one night only!

You can learn more about the delicate Texas coastal ecosystem at the Hamman Hall of Texas Coastal Ecology.

Sharks are now oversharing…but you will want to follow them!

half-mount2-blogYoung or old, nature lover or couch potato—everyone has some fascination with sharks.

HMNS is bringing in some great opportunities to learn about these predators who have dominated the oceans for millions of years. Leading shark researchers will be at HMNS during the next two weeks to share the latest information on our local sharks in the Gulf of Mexico and the grand-daddy of them all, the great white.

On February 25 marine biologist Dr. Glenn Parsons from Ole Miss will share the findings of his 40-year career of researching shark behavior, ecology and physiology in the Gulf of Mexico, which harbors about 65 species of sharks. Sharks here are exposed to both natural stressors including changes in water temperature and oxygen availability and anthropogenic stressors that are caused by humans, pollutants and fisheries.

This is Katherine getting her and tag checkup aboard the OCEARCH vessel.

This is Katherine getting an ultrasound and tag checkup aboard the OCEARCH vessel.

Unprecedented research on great white sharks and other large apex predators will be presented by shark researcher Dr. Greg Stunz of the Harte Institute and Texas A&M Corpus Christi with OCEARCH founder and expedition leader Chris Fischer on March 4. In order to protect the species’ future while enhancing public safety and education, researchers with the OCEARCH collaborative are now generating previously unattainable data on the movement, biology and health of great white sharks. The images they will show on the Wortham Giant Screen will be insanely amazing.

Of course you can also get up close and personal with two different shark species at the Museum in the Shark! touch tank experience, where biologists will share shark tales and shark tails.

HMNS Distinguished Lectures

“The ABC’s of Sharks: Attacks, Biology and Conservation
Glenn Parsons, Ph.D., Ole Miss
Wednesday, February 25, 6:30 p.m.

“Great White Sharks, Tracking The Ocean’s Apex Predator”
Greg Stunz, Ph.D. and Chris Fischer, OCEARCH
Wednesday, March 4, 6:30 p.m.

Tickets & more info: www.hmns.org/lectures


Need to keep up with a busy shark who is always on the go?
Now you can stay connected to your favorite shark via a phone app, Twitter and Facebook!

shark-tracker-app-iconOCEARCH’s Global Shark Tracker app lets you observe the navigational pattern of sharks that have been tagged with satellite tracking technology all for the purpose of shark conservation.

OCEARCH facilitates unprecedented research by supporting leading researchers and institutions seeking to attain groundbreaking data on the biology and health of sharks, in conjunction with basic research on shark life history and migration.

OCEARCH is a leader in open source research, sharing data in near-real time for free through the Global Shark Tracker, enabling students and the public to learn alongside PhDs. The Landry’s-developed STEM Education Curriculum, based on the Global Shark Tracker and Next Generation Science Standards (NGSS), is being launched for grades 6-8 in the fall of 2013 nationwide.

Over 50 researchers from more than 20 institutions have collaborated with OCEARCH to date with over three dozen research papers in process or completed. Research expeditions are conducted worldwide aboard the M/V OCEARCH, which serves as both a mothership and at-sea laboratory. Utilizing a custom 75,000 lb. capacity hydraulic platform designed to safely lift mature sharks for access by a multi-disciplined research team, up to 12 studies are conducted in approximately 15 minutes on a live mature shark. Powered by five Cat engines, the M/V OCEARCH is capable of Global Circumnavigation.

Here are screenshots showing the favorite hangouts of Wyatt, Sam Houston and Madeline—a few sharks in our neighborhood. 

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