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San Diego Zoo Institute for Conservation Research

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Transparency Leads to High Rating for San Diego Zoo Global Fiscal Management

Global_logo_color webFor the third year in a row San Diego Zoo Global has earned a four-star rating from Charity Navigator for its fiscal management and commitment to accountability. A three-year, four-star rating is achieved by only 12 percent of the 8,000 organizations surveyed. The rating system serves as a guide offering information for philanthropy.

“We are proud to be a trusted destination for conservation philanthropy,” said Douglas G. Myers, president and CEO of San Diego Zoo Global. “We work hard to ensure that money raised for our mission goes immediately into the important work saving species from extinction.”

Over the last three years San Diego Zoo Global has committed more than $500 million for animal care, exhibits, education programs and conservation initiatives. Significant programs include its ongoing work to recover the California condor, head-starting and reintroduction programs for Caribbean iguanas, contribution to knowledge about giant pandas and support for fieldwork on six continents.

Charity Navigator works to help charitable givers make intelligent giving decisions by providing information on more than 8,000 charities nationwide and by evaluating their financial health. It calculates each charity’s score based upon several broad criteria, including how much is spent per dollar raised, what percentage of funds goes to programs vs. administrative and fund-raising expenses, and the organization’s long-term financial health. It then assigns a rating from one to four, with four being the best rating. San Diego Zoo Global has received a four-star rating through this system seven times in the last eight years.

Bringing species back from the brink of extinction is the goal of San Diego Zoo Global. As a leader in conservation, the work of San Diego Zoo Global includes onsite wildlife conservation efforts (representing both plants and animals) at the San Diego Zoo, the San Diego Zoo Safari Park, and San Diego Zoo Institute for Conservation Research, as well as international field programs on six continents. The work of these entities is inspiring children through the San Diego Zoo Kids network, reaching out through the Internet and in children’s hospitals nationwide. The work of San Diego Zoo Global is made possible by the San Diego Zoo Global Wildlife Conservancy and is supported in part by the Foundation of San Diego Zoo Global.

CONTACT: SAN DIEGO ZOO GLOBAL PUBLIC RELATIONS, 619-685-3291
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For World Wildlife Day: Talking Trafficking

We think the tusks look better on the elephant, don't you agree?

We think the tusks look better on the elephant, don’t you agree?

Today is World Wildlife Day! The United Nations General Assembly has proclaimed this day, the anniversary of the adoption of the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES), as an important one to highlight one of the most serious threats to wildlife across the globe: the illegal trade in wildlife, also called wildlife trafficking.

Wildlife trafficking is the illegal sale or trade of animals or plants, in part or in whole. For some wildlife, trade is legal: harvesting fish from the sea to feed people is a common practice. In the western world, it typically occurs in accordance with regulations and quotas to ensure that this commercial enterprise does not doom the fish to extinction. Your kitchen may contain mushrooms or morels that were harvested from the wild for your consumption. Some medicinal plants harvested in the wild might infuse your cup of tea. These are legal examples of trade in wildlife and plants.

This black rhino was fortunate to not be one of the more than 1,200 killed for its horn in 2014. How long will its luck hold?

This black rhino was fortunate to not be one of the more than 1,200 killed for its horn in 2014. How long will its luck hold?

Illegal trade in wildlife occurs when local and international laws are broken for the purpose of commercial enterprise. Often, the laws come about to support CITES, whose objective is to prevent commerce from threatening the survival of plant and animal species. Typically, laws are broken when that commerce proves exceptionally lucrative, as has proven to be the case for species like elephants and rhinoceros. Unfortunately, elephant ivory and rhino horn can bring big financial returns for poachers and the crime syndicates who fund them. Ounce for ounce, rhino horn is worth more than drugs like cocaine on the black market, drawing as much as $60,000/kilogram. This is the primary reason that rhino populations are suddenly experiencing steep declines, as poachers slaughtered 1,215 across the globe in 2014. That’s one rhino killed every eight hours for the purpose of making money for criminal organizations. And elephants are victims, too. Killed for their ivory tusks, about 96 elephants a day fall victim to illegal trafficking. These deaths draw both rhinos and elephants closer to the threat of extinction.

As stated by UN Secretary General, Ban Ki-moon, “Illegal wildlife trade undermines the rule of law and threatens national security; it degrades ecosystems and… combating this crime is not only essential for conservation efforts and sustainable development, it will contribute to achieving peace and security in troubled regions where conflicts are fueled by these illegal activities.” This is a serious conservation issue. Its time we all get serious about wildlife trafficking.

Know before you buy, and don't purchase ivory items or anything made from rhino horn.

Know before you buy, and don’t purchase ivory items or anything made from rhino horn.

What can you do? Start by informing yourself. Though China is one of the primary destinations for most trafficked goods, you might be surprised to learn that the US is the second leading recipient of illegal ivory. So take the next step: refuse to buy trafficked goods. Never, ever buy ivory statues or jewelry, or rhino horn products and powders. Ending the demand for these items is an important part of the offensive to end the slaughter of rare wildlife across the globe, and a crucial part of preventing extinction.

San Diego Zoo Global is in the business of ending extinction. Combating illegal wildlife trafficking is an important part of meeting that objective. We hope you’ll join us this World Wildlife Day by getting serious about wildlife crime.

Suzanne Hall is a research coordinator for the San Diego Zoo Institute for Conservation Research. Read her previous post, Who You Calling Sloth?.

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Strategy to Save Northern White Rhino Is Launched; New Genetic Technologies Offer Hope for Species

Global_logo_color webWith support from the Seaver Institute, geneticists at San Diego Zoo Institute for Conservation Research are taking the initial steps in an effort to use cryopreserved cells to bring back the northern white rhino from the brink of extinction. Living cells banked in the Frozen Zoo® have preserved the genetic lineage of 12 northern white rhinos, including a male that recently passed away at the Safari Park. Scientists hope that new technologies can be used to gather the genetic knowledge needed to create a viable population for this disappearing subspecies.

  “Multiple steps must be accomplished to reach the goal of establishing a viable population that can be reintroduced into the species range in Africa, where it is now extinct,” said Oliver Ryder Ph.D., Director of Genetics for the San Diego Zoo Institute for Conservation Research. “A first step involves sequencing the genomes of northern white rhinos to clarify the extent of genetic divergence from their closest relative, the southern white rhino.”

The next step would require conversion of the cells preserved in the Frozen Zoo® to stem cells that could develop into sperm and eggs.  A process to do this was successfully developed in the laboratory of Dr. Jeanne Loring of the Scripps Research Institute and published in 2011.

“If we can take reprogrammed cells and direct them to become eggs and sperm, we can use in vitro fertilization to generate a new animal,” said Jeanne Loring, Director of Regenerative Medicine for the Scripps Research Institute. “Bold new initiatives are required to save endangered species, and we recognize the application of stem cell technology using cells in the Frozen Zoo® provides hope for preventing extinctions, with scientific innovation helping to lead these efforts.”

Researchers at the Safari Park have been working for decades to breed the species but had only four aged individuals to work with. After the recent death of the male rhino, Angalifu, reproductive physiologists from the San Diego Zoo Institute for Conservation Research collected and cryopreserved 200 vials of sperm and 75 vials of testicular tissue.  This sperm, along with previously collected semen saved in the San Diego Zoo’s Frozen Zoo®, will be utilized for future assisted reproduction efforts.

“The reproductive system of rhinos is very complex and there is still so much we do not know,” said Barbara Durrant Ph.D, reproductive physiologist at the San Diego Zoo Institute for Conservation Research. “We will meet the challenge to save this beautiful animal by combining recent advances in genetic and reproductive technology with our expertise in animal care and welfare.”

The Seaver Institute has awarded San Diego Zoo Global $110,000 to fund whole genome sequencing of northern and southern white rhinos in an effort to characterize genetic diversity. Understanding the genetic differences between rhino species will allow scientists to determine what assisted reproduction mechanisms may be used for future conservation.

“The Seaver Institute supports fundamental research and innovative inquiry for particular projects that offer the potential for significant advancement in their fields,” said Victoria Dean, President for the Seaver Institute. “We are interested in supporting this project which will take advantage of the, until now, theoretical value of the Frozen Zoo.”

Only one northern white rhino, an elderly female, remains at the San Diego Zoo Safari Park. Three other northern white rhinos are in the Ol Pejeta Conservancy in Kenya and one is in the Dvur Kralove Zoo in the Czech Republic. The five remaining rhinos are all of an advanced age and have not reproduced.

Bringing species back from the brink of extinction is the goal of San Diego Zoo Global. As a leader in conservation, the work of San Diego Zoo Global includes onsite wildlife conservation efforts (representing both plants and animals) at the San Diego Zoo, the San Diego Zoo Safari Park, and San Diego Zoo Institute for Conservation Research, as well as international field programs on six continents.  The work of these entities is made accessible to children through the San Diego Zoo Kids network reaching out through the internet and in children’s hospitals nationwide.  The work of San Diego Zoo Global is made possible by the San Diego Zoo Global Wildlife Conservancy and is supported in part by the Foundation of San Diego Zoo Global.

CONTACT: SAN DIEGO ZOO GLOBAL PUBLIC RELATIONS, 619-685-3291
 

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Little Green Guards Excitement!

The Little Green Guards were excited by our surprising camera-trap discoveries. (Photo by Lei Shi)

The Little Green Guards were excited by our surprising camera-trap discoveries. (Photo by Lei Shi)

The feeling of love and empathy for animals is very much influenced by one’s culture and upbringing. How can people conserve endangered animals if they do not love them? How do people come to love and appreciate animals? These are the kinds of questions I often ponder, and I am eager to find ways to help people, especially children, bond with animals.

Over the last five years, I have been exploring the topic of love and empathy toward animals and learning how to cultivate these sentiments in children who are in my Little Green Guards program. Little Green Guards are children living in conservation priority areas that have an underdeveloped economy and education system. The goal of the program is to build a strong and lasting love for animals in children, ultimately empowering them to become conservation stewards of their natural heritage.

Because personal experience can create deep impressions, it is important to include many field trip opportunities for Little Green Guards to fall in love with animals and nature. In Fanjingshan, China, my collaborators and I recently used our camera-trap research project as a way to introduce local schoolchildren to wildlife that may be difficult to see in the nearby forest.

Before going to the field we explained the science behind our camera-trap research to the children, how the cameras have helped us understand the “secrets” of many amazing animals, some active in the day and some at night. We then tantalized the children with our best photos and the “surprises” we discovered. The children would “Ooh!” and “Aah!” as they looked at the photos—the excitement for camera-trapping was escalating!

Fanjingshan nature reserve biologist Lei Si showed children how to mount a camera trap on a tree. (Photo by Kefeng Niu)

Fanjingshan nature reserve biologist Lei Si showed children how to mount a camera trap on a tree. (Photo by Kefeng Niu)

Out in the forest, we selected a relatively flat area with a sturdy tree. We then showed the kids how to properly install batteries and the memory card, program the settings, and finally mount the camera. When all the preparation was done, the children practiced taking “selfies,” one by one, by triggering the sensor in front of the camera and saying “Qiezi!” (the Chinese version of “Cheese!”). Beyond just having fun, this Little Green Guards lesson allowed us to teach the children not only about animal biology and caring for their wildlife neighbors but also essential life skills so they can develop healthy self-esteem, despite their rural circumstances.

Two Little Green Guards inspect the camera trap,

Two Little Green Guards inspect the camera trap,

The success of the Little Green Guards program will require long-term efforts and reaching out to as many communities as possible around Fanjingshan and other protected areas in China as well as in Vietnam and Madagascar. As the citizens who live adjacent to natural habitats form the front line of defense in protecting local biodiversity, we imagine that our Little Green Guards program may have a substantial positive influence on people’s attitudes toward conservation. We hope that one day every child in the Little Green Guards program will develop affection for wildlife so that when that day comes, we can all smile and say “Qiezi!”

Chia Tan, Ph.D., is a senior scientist in the Conservation Partnership Development Division of the San Diego Zoo Institute for Conservation Research. Read her previous post, Have Camera Trap, Will Travel.

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Ambassador Mi Ton Teiow Receives a New Posting

Mi Ton Teiow explores the archaeology and classical culture of ancient Greece, which included stories and myths about bears and people.

Mi Ton Teiow explores the archaeology and classical culture of ancient Greece, which included stories and myths about bears and people.

Bear Conservation Ambassador Mi Ton Teiow was posted to San Diego Zoo Global for one year following the 22nd conference of the International Association for Bear Research and Management (IBA) in Provo, Utah, but he has now moved on to new adventures!

En route to the 23rd conference of the IBA in Thessaloniki, Greece, Mi visited some of the world-famous archaeological sites in Athens, and admired a statue of a little bear dedicated to the Greek goddess Artemis. This was a beautiful reminder that bears have played an important role in European culture since the rise of European civilization, and they still do. This point was reiterated at the conference during a special session on human-bear conflict. In addition, a session on conservation of Mongolian Gobi bears was attended by representatives of the Mongolian government, further illustrating the importance that some people around the world continue to place on bears and bear conservation.

Mi also heard updated assessments of the conservation status of the eight bear species by the IUCN’s Bear Specialist Group. Six of the eight species of bears are now considered at some risk of extinction, which is a sobering reality in a changing world. As part of the discussion of the status of Asiatic black bears and sun bears, Mi heard about ongoing efforts to reduce the impact of the harvest of these bears’ bile, which is used in some traditional medicinal practices. Mi’s previous travels have not dealt much with the issue of bear bile harvest, but Mi is now gaining much more exposure to this topic.

During the conference, a select committee of international bear biologists decided that Mi could now best serve bear conservation by traveling with Matt Hunt, Chief Executive of Free the Bears Fund, a non-profit, non-governmental organization focused on the conservation of bears in Asia. Since leaving Greece, Matt and Mi have already visited India, Cambodia, Australia, and Laos. So, although Ambassador Mi Ton Teiow has already explored bear conservation in many countries, there are many opportunities for further discovery. Good luck, Mi!

Russ Van Horn is a scientist with the San Diego Zoo Institute for Conservation Research. Read his previous post, What to Eat When There’s Nothing to Eat.

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From Conflict to Coexistence: Part 2

There are only about 3,000 of the endangered Grevy’s zebra left in the world, so it was great to see a foal at West Gate Conservancy!

There are only about 3,000 of the endangered Grevy’s zebra left in the world, so it was great to see a foal at West Gate Conservancy!

Read Conflict to Coexistence: Part 1

Christy and I spent a month traveling across Kenya at the end of 2014. We journeyed from the base of Mt. Kilimanjaro at the Tanzania border in the very south, up to northern Kenya and the Mathews Range. Our purpose was to meet with researchers and conservationists in the field who are leading the fight against extinction, battling not only poaching, but also working alongside communities to address localized conflicts and habitat fragmentation. We were inspired by their passion and innovation, and returned to San Diego to start planning several collaborative projects focusing on elephants, lions, rhinos, Grevy’s zebra, cheetah, leopard, giraffes, and other species.

We take a collaborative approach to conservation, which cannot ultimately be successful unless communities support, participate in, and benefit from it. As such, we were lucky to meet with some of the most inspiring communities, groups, and researchers that are working together in creative ways to bring success for people and wildlife. It is alongside these groups that San Diego Zoo Global will stand and partner with as we save species.

We cannot do any of this work without your continue support—thank you so much, because together we can end extinction! Become a Hero for Wildlife and join us in this important work.

Here are some of the groups we met, and are excited to be exploring conservation research partnerships with:

African Conservation Centre partners with communities on conservation initiatives, and is coordinating the Borderlands Conservation Initiative. Saving the richest wildlife populations on earth by working with communities and landowners along the Kenya-Tanzania border between the National Parks to establish viable, interconnected elephant and lion populations by strengthening community conservation capacity, generating jobs and income, and end poaching.

Lewa Wildlife Conservancy:  A 55,000-acre conservancy in northern Kenya. Initially focused on protecting rhino from poaching, it has grown as a leader in wildlife conservation, and spreads the benefits of wildlife conservation through community development programs to 40,000 people regionally.

Namunyak Wildlife Conservation Trust:  Encompassing the unique and bio-diverse Mathews Range, this million-acre Samburu community conservancy is the jewel of northern Kenya. Previously home to an estimated 3,000 black rhino and numerous other species, today wildlife are returning, including elephants, reticulated giraffe, leopards, cheetah. Sarara Camp, a glorious community-owned eco-lodge that gives guests a unique intimate experience, while generating wildlife income for the community It also partners with Samburu leaders on a number of innovative conservation projects.

West Gate Community Conservancy:  Recognizing this Samburu community’s vision for conservation and co-existence, San Diego Zoo Global has supported the 100,000-acre West Gate Conservancy since its inception. Ten years later it is a leader in community-based conservation, battling land degradation, collectively managing grazing, and runs innovative community programs benefitting local people and the growing population of wildlife. West Gate is also home to two extremely effective community-based conservation organizations: Ewaso Lions and Grevy’s Zebra Trust who use innovative, multi-dimensional approaches to conserve lions and endangered Grevy’s zebras and secure wildlife corridors in West Gate and beyond.

The Safari Collection:  Through its four world-class lodges, and in full partnership with the communities, the Safari Collection is a leader and innovator in sustainable ecotourism. At each location, the lodges provide income and employment locally and work collaboratively with community members to enact conservation and capacity-building programs. These include direct conservation research on cheetahs and rhino and community initiatives such as health clinics, education and sport programs. We met with the Owner and Community and Conservation Manager in the elegant Giraffe Manor, to plan potential exciting future conservation efforts.

Save the Elephants is the pioneer group for elephant research and conservation in East Africa. Save the Elephants continues cutting-edge elephant conservation research through its collaring program, and community conservation by reducing conflict and poaching. They are also tackling ivory poaching head-on across Africa and curbing demand in China and Asia.

The Giraffe Conservation Foundation:  Giraffes are the forgotten giants of Africa. They have declined by 40% since 1999, from 140,000 to less than 80,000 today. All nine types of giraffe are in decline, but some are in real trouble. The reticulated giraffe has declined by 80% over the past fifteen years from 28,000 to less than 4,700 today. Most of reticulated giraffe’s range is outside of protected areas, in addition to habitat loss, they are being relentlessly poached for meat, decoration and in response to a recent myth that giraffe bone marrow and brains cure HIV/AIDS. In close partnership with the Giraffe Conservation Foundation, we are working to rapidly develop community-based conservation initiatives to stem this decline, before giraffes vanish.

David OConnor is a research coordinator for the San Diego Zoo Institute for Conservation Research. Read his previous post, Understanding Wildlife Trade in Asia.

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From Conflict to Coexistence: Part 1

A mother elephant and her calf surprised the author in Kenya.

A mother elephant and her calf surprised the author in Kenya.

“Don’t worry”, came the calm tones of my passenger (and Institute colleague) Dr. Christine Browne-Nunez, as my foot pressed hard on the clutch. I had slammed the Land Cruiser into reverse, ready for a rapid retreat back through the weave of Acacia shrubs. However, not without unease, I returned to neutral and shut off the engine.

Staring at us, having emerged from the bush onto the track in front of us, was a mature female African savanna elephant Loxodonta africana and her young calf. Despite being the most massive terrestrial mammals on the planet, elephants are surprisingly invisible in dense vegetation, and momma elephants can be very protective when surprised…

Christine and I have both worked on conservation research in East Africa over the years, but our reactions to encountering elephants in the wild were miles apart. Me: “How quickly can I backup?” Christine: “Let’s be among them, and wait for them to pass.”

The elephants passed peacefully, purposefully going about the business of consuming their daily requirement of 220 pounds (100 kilograms) or more of vegetation. In that moment, we realized that our differing reactions to encountering elephants underscored a much larger conservation dynamic in the region. The very dynamic that had led us to be in the car on that track in Samburu National Reserve, Kenya.

Christine Brown-Nunez, PhD a human dimensions of conservation specialist talking about wildlife interactions with a maasai warrior just outside Amboseli National Park.

Christine Brown-Nunez, Ph.D., talks about wildlife interactions with a Maasai warrior just outside Amboseli National Park.

Christine’s prior research focused on the human aspects of elephant conservation around Amboseli National Park. When inside Amboseli’s boundaries, the elephants are well protected [thanks to the elephant researchers, the Kenya Wildlife Service (KWS), and others]. As a result they are less stressed, and do not feel as threatened in the presence of humans as do elephants in other parts of Kenya. The elephants there accept researchers, who can approach a herd and be among them. This has allowed researchers to gather the most intimate behavioral and social portraits of elephants anywhere—vital knowledge that has informed conservation.

Thanks to the equally pioneering and long-term work of Save the Elephants, when inside Samburu National Reserve, elephants now have a growing sense of security. They know that while within Samburu they are safer from human threats.

Watchful eyes of members of an elephant family group in Amboseli National Park. We know a lot about these elephants thanks to the research of the Amboseli Trust for Elephants.

Watchful eyes of members of an elephant family group in Amboseli National Park. We know a lot about these elephants thanks to the research of the Amboseli Trust for Elephants.

In contrast, my previous experiences in East Africa are among elephants outside of formally protected areas. Where elephants face daily threats such as poaching, harassment, lack of access to resources, spears and bullets—a very negative environment. For instance, while working not far from Samburu, over in Laikipia, when I encountered elephants at such close range either in my vehicle or on foot, they’d immediately charge and I’d have to make a very rapid escape. Those elephants were stressed, feeling threatened, and so they would react in kind. What is interesting, however, is that these aren’t different animals we’re talking about. When the same, calm elephants in Samburu move into less-safe environments, they become aggressive in response to close human presence.

It’s not just elephants that act differently when they know they’re in riskier areas, overlapping with humans. I’ve experienced similar reactions in giraffes. In well-protected areas, they are less concerned about close proximity to humans and livestock, whereas outside those areas, it is hard to get within 110 to 218 yards (100-200 meters) of them, creating quite a challenge for giraffe researchers like me.

One of about 60 endangered black rhino in Lewa Conservancy. Lewa’s work has dramatically reduced poaching in the area, giving these rhino a fighting chance.

One of about 60 endangered black rhino in Lewa Conservancy. Lewa’s work has dramatically reduced poaching in the area, giving these rhino a fighting chance.

This is not to vilify the people who live among elephants and other large wildlife. Living with these giants is challenging. Elephants raid crops and can destroy a family’s livelihood (often their only income for the season) in a few hours. They also damage wells and can injure and kill people and livestock. So like the elephants, people need to defend themselves, their families, and livelihoods.

However, the more concerning threats are caused by the poachers who are responsible for the shocking decline in populations of elephants, rhino, giraffes, and other wildlife for trinkets and traditional medicine. They often mow down elephants and rhinos from a distance with automatic weapons or set neck snares for giraffe. It is these external drivers that cause the most conflict. They are also the reason for plummeting wildlife populations outside protected areas, and explain why wildlife are stressed and aggressive.

Two maasai warriors get some refreshment by the new water pump near their boma just outside Ambsolei National Park, surrounded by a wall to protect against elephant damage.

Two Maasai warriors get some refreshment by the new water pump near their boma just outside Ambsolei National Park, surrounded by a wall to protect against elephant damage.

East African pastoralists, or livestock herders, historically coexisted with wildlife. In fact over the millennia, both wildlife and human systems evolved in synch. Today, pastoralism remains a primary form of livelihood in East Africa. This complementary land use is key to successful wildlife conservation. Pastoralism leaves a porous landscape where herbivores and carnivores can live, access resources, and can travel between parks in search of resources, territory, or mates. Without such spaces and corridors, populations in protected pockets will atrophy and vanish, as isolated parks are too small for large, wide-ranging species.

The downside is that it is also in these vital areas where wildlife encounter their greatest threats, not only from poaching, but also from localized conflicts and ever-increasing habitat fragmentation.

It is in these complex settings that innovative conservation efforts are needed. As conservationists we need to understand not only what is happening with wildlife, but with the people living alongside and interacting with wildlife. This is the reason for our visit to Kenya, to move from conflict to coexistence between wildlife, people and livestock.

To be continued… Check back tomorrow to get to know the groups David and Christy met with, and what the future holds for collaborative conservation.

David OConnor is a research coordinator for the San Diego Zoo Institute for Conservation Research. Read his previous post, Understanding Wildlife Trade in Asia.

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California Condors: Little Things, Big Effects

Condors have excellent vision, but some threats are too small for even these birds to see.

Condors have excellent vision, but some threats are too small for even these birds to see.

In spring of 2011, I served as a summer research fellow at the San Diego Zoo Institute for Conservation Research. Here I learned that I could contribute to the conservation of endangered species in a way I never dreamed possible: on a molecular level! To say this was a stretch for me is an understatement. Freshman year of undergrad I distinctly remember the shock when I was handed back my first BIO 101 exam: it was the first “D” I ever received at any time as a student. I turned to my friend and proclaimed, “I will NEVER work with something I cannot see,” (referencing biological materials such as DNA, RNA, and proteins), conclusively announcing “All I want to do is work with animals.”

Despite my initial frustration, I stuck with the biology major, tagged on an animal science minor, and got a keeper internship at my local zoo. The internship turned into a part-time job working hands-on with exotic animals, a dream come true! While zookeeping was a very gratifying job, reproductive physiology had caught my attention not only in the classroom but through my experience at the zoo. I was amazed at how reproductive techniques such as semen collection, artificial insemination, and hormone monitoring could inform animal managers and scientists of a broader picture not always seen by the naked eye. My interest and enthusiasm landed me an internship in the Reproductive Physiology Division at the Institute and, eventually, a permanent position as a research technician. We work on traditional gamete preservation, hormone monitoring, and the exciting new field in the zoo world: environmental toxicology. This research combines molecular techniques and endocrinology to explore the effects of chemicals found in the environment on the development and reproduction of captive and wild animals.

I am now a graduate from the University of Missouri’s animal science master’s program with a thesis describing the molecular interactions of environmental chemicals and hormone receptors of a critically endangered species, the California condor. Needless to say, I have changed my stance on working with biological materials that are not visible to the naked eye!

HEK cells (seen here at 100 times their actual size) are used as concor receptor factories to study the effects of environmental contaminants on reproduction. Photo by Rachel Felton

HEK cells (seen here at 100 times their actual size) are used as condor receptor factories to study the effects of environmental contaminants on reproduction.

In the Lab
In my previous post DDT: Another Challenge for California Condor, I explained our first investigations of the effects of environmental chemicals on California condor reproduction. In the lab, we were able to develop an assay to screen condor estrogen receptors (ERs) with chemicals found circulating in the blood of condors living along California’s coast to detect activation of these hormone receptors. Determining which chemicals mimic (activate ERs) or block (deactivate ERs) signaling of the endogenous hormone estrogen will be an important step in better understanding the endocrine-disrupting potential of chemicals found in the condor’s coastal environment.

Chemical concentrations circulating in condor blood activated condor estrogen receptors in the lab. This discovery lead us to speculate that in the wild, coastal condors are being exposed to levels of chemicals that may cause developmental and/or reproductive harm. The chemical load in condors today is similar to that found in other birds of prey along the California coast such as the bald eagle and peregrine falcon. These species have experienced eggshell thinning in the past. Unfortunately, eggshell thinning is already compromising the coastal condor population.

Relocating California condors to coastline habitats reduces chances of lead poisoning but may pose other risks.

Relocating California condors to coastline habitats reduces chances of lead poisoning but may contain other, unseen threats.

In the Field
What does this mean for free-flying condors? The cliffs along the Southern California coast may not be the ideal escape from the threats of lead poisoning. If chronic exposure and the production of thin eggshells continue in the population, there is the potential for long-term effects since coastal condors are sensitive at the molecular level to contaminants found in their diets. In Oregon and Washington, condor reintroduction was put on hold due to elevated levels of chemicals in the blubber of marine mammals.

In Baja California, Mexico, the wild condor population may have to be moved to the coast of Mexico. Conservation managers are hoping to wean condors off expensive supplemental feedings and toward a diet composed of beached marine mammals. But before relocation of this population occurs, chemical compositions of beached marine mammals at the potential release sites will be evaluated in the lab for endocrine-disrupting capabilities. Our goal is to move condors away from lead and intensive management practices, but not into another health-compromising situation.

Rachel Felton is a senior research technician at the San Diego Zoo Institute for Conservation Research.

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Elderly Northern White Rhino Passes Away at San Diego Zoo Safari Park

SafariParkA northern white rhino, Angalifu, passed away in the early hours of this morning, Sunday December 14. The male rhino, who was estimated to be 44 years of age, was under veterinary care for a variety of age related conditions. His death leaves only 5 Northern white rhinos left in the world: one elderly female at the San Diego Zoo Safari Park, 1 at a zoo in Czechoslovakia and 3 in Africa.

“Angalifu’s death is a tremendous loss to all of us.” said Randy Rieches, curator of mammals for the San Diego Zoo Safari Park. “Not only because he was well beloved here at the Park but also because his death brings this wonderful species one step closer to extinction.”

Northern white rhinos have been brought to the brink of extinction due to poaching in Africa. Unfortunately only a few have been preserved at zoos and these have been largely non-reproductive.

“More than two decades ago we started working with the species here at the Safari Park.” Said Barbara Durrant, director of reproductive physiology for the San Diego Zoo Institute of Conservation Research. “Unfortunately we only had three rhinos here at the Park and they were all of an advanced age. We were not able to get them to breed and we have been sadly watching their species being exterminated in the wild.”

In the wild rhinos are killed for their horns, a unique physiological feature made up of keratin (the same material in human fingernails). Many cultures believe rhino horn has medicinal value and the black-market in horns taken from poached animals continues to thrive.

Protected from the poaching that has wiped out northern white rhinos in Africa, Angalifu has been living at the Safari Park since his arrival from the Khartoum Zoo in the late 1980s. Although holding out little hope for the species, conservationists at San Diego Zoo Global continue to work to find a way to recover the species. Semen and testicular tissue from the male rhino have been stored in the Frozen Zoo with the hope that new reproductive technologies will allow recovery of the species.

Bringing species back from the brink of extinction is the mission of San Diego Zoo Global. As a leader in conservation, the work of San Diego Zoo Global includes onsite wildlife conservation efforts (representing both plants and animals) at the San Diego Zoo, San Diego Zoo Safari Park, and San Diego Zoo Institute for Conservation Research, as well as international field programs on six continents. The important conservation and science work of these entities is made possible by the San Diego Zoo Wildlife Conservancy and is supported in part by the Foundation of the Zoological Society of San Diego.

CONTACT: SAN DIEGO ZOO GLOBAL PUBLIC RELATIONS, 619-685-3291
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The Python Challenge

Burmese pythons are an invasive species in Florida's Everglades.

Burmese pythons are an invasive species in Florida’s Everglades.

When a male reptile in the San Diego Zoo collection passes away, it is my job to freeze his sperm. Unfortunately, there has been so little research done on freezing reptile sperm that there are no guidelines in the scientific literature. So, we have to develop the protocols for ourselves, which requires a great deal of research and a lot of sperm samples. This scenario plays out all too often in the Reproductive Physiology Lab of the San Diego Zoo Institute for Conservation Research. We always need more samples! How could we know how to freeze golden lancehead sperm without any practice on this or any related snake species?

Our lab group has struggled with this problem for years and has come up with some creative solutions to the sperm shortage problem. My colleagues Nicole Ravida, Dr. Barbara Durrant, and I began scouring the Internet to find a way to collect large numbers of reptile sperm samples in a short period of time to use as models for endangered reptile species. That’s when we learned about the Python Challenge in the Everglades.

Carly and Barbara got an early start in the Everglades.

Carly and Barbara got an early start in the Everglades.

The Florida Fish and Wildlife Conservation Commission (FWC) launched the Python Challenge to raise awareness about Burmese pythons and how this invasive species is a threat to the Everglades ecosystem and its native wildlife. The Burmese python is one of the deadliest and most competitive predators in South Florida. With no known natural predators, population estimates for the python range from the thousands to hundreds of thousands. A severe decline in a variety of mammal populations in the Everglades over the last eight years coincides with the proliferation of the invasive Burmese python. Necropsies on the captured snakes reveal what pythons are eating, their reproductive status, and location data from the hunters that will help scientists figure out where the snakes are living—valuable data for researchers working to stop their spread.

The Python Challenge was a month-long harvest open to anyone, and we knew this would be our opportunity to collect many snake sperm samples. We immediately contacted the Invasive Species Program staff at the University of Florida, one of the Python Challenge partners, and the project all started to fall into place. Barbara and I arrived in Florida and immediately collected all the supplies and equipment we had sent ahead to Zoo Miami and then purchased thick sheets of dry ice. Lining a large Styrofoam box with the cold sheets, we fabricated a minus 112-degrees-Fahrenheit (-80 degrees Celsius) freezer for one of our freezing protocols. With everything we would need piled into our rental car, we finally made it to the hotel room and organized our temporary lab.

The Python Challenge check-in station was simple but effective.

The Python Challenge check-in station was simple but effective.

The next day we drove to the Python Challenge check station, which consisted of a pickup truck and a tent. Hunters came to the check station to have their snake(s) measured and documented by the Invasive Species Program staff. Prizes were awarded to the hunter who harvested the longest snake and the one who brought in the most snakes. We anxiously waited with the people from the University of Florida for a male snake to be brought in. Unfortunately, the first snake to arrive had been frozen the previous day. We needed fresh, cooled samples, not frozen, so we continued to wait for another snake, which came in a few hours later. We dissected out the vas deferens, where the sperm is stored, on the back of a pickup truck as the sun set over the Everglades. We immediately put the tissue in saline in a cooler and raced back to the hotel to process the sample. But it was a bust—no motile sperm. We just had to hope for better luck the next day.

The vas defrens were taken back to the makeshift lab in the hotel room for processing.

The vas defrens were taken back to the makeshift lab in the hotel room for processing.

The next morning we got a call from our colleagues at the University of Florida saying that they had two live snakes. This was fantastic news, because we would be able to obtain fresh sperm samples. During the snakes’ necropsies, we collected the vas deferens and drove an hour back to our hotel room to process the samples. Fortunately, both males had motile sperm. More sperm, in fact, than we had ever seen and certainly more than we could ship back to San Diego. After several hours of freezing the sperm in our homemade dry-ice box or in liquid nitrogen vapor, we received a call that another male snake was available. We drove back to the Check Station, arriving after dark. We removed the vas deferens in the back of the truck using my phone as our light source. We made it back to the hotel room for another five hours of processing and freezing, falling into bed at 1a.m. It was a very long day but a successful one, with sperm from three snakes safely stored in our shippers.

Our luck continued the next day, with an interesting twist. This time the live snakes had been brought to another checkpoint, and we would need to transport them to the University of Florida lab. It was a bit surreal to be driving down the highway with three large pythons in snake bags in the trunk. We wondered if we had violated the rental agreement when we promised not to carry pets in the car. It was worth the risk; snakes and humans arrived safely at the university, and we froze three more sperm samples back in our hotel room lab.

Overall, it was a successful trip to the Python Challenge in the Everglades. We froze 130 vials of sperm, shipping them back to San Diego. Then began the long process of thawing and evaluating each sample, comparing three different freezing protocols to determine which one resulted in the best post-thaw viability. We have analyzed the data, and we have an early winner among the protocols we tested. However, we will need to repeat the experiment with improved protocols to maximize sperm motility and membrane integrity, both of which are essential for potential fertility.

Although we will never use the sperm of this invasive species for artificial insemination (we certainly don’t want more Burmese pythons in the United States!), we have taken a big step forward in the development of sperm-freezing methods for its endangered relatives such as the Indian python and the Cropan’s boa.

Carly Young is a senior research technician for the San Diego Zoo Institute for Conservation Research.