“Project Heloderma”: An In situ Conservation Program for the Guatemalan Beaded Lizard (Heloderma charlesbogerti)
American Association of Zoo Veterinarians Conference 2010
Brad A. Lock1, DVM, DACZM; Daniel Ariano Sanchez2; Luis Alvarado2; John Binns3
1Zoo Atlanta, Atlanta, GA, USA; 2Zootropic, Guatemala City, Guatemala; 3International Reptile Conservation Foundation (IRCF), San Jose, CA, USA


The Guatemalan beaded lizard (Heloderma charlesbogerti) has not been formally IUCN Red listed as a subspecies, but is clearly critically endangered with an estimated 100–200 individuals remaining in its dry forest habitat, the size of a Texas cattle ranch, surrounded by unsuitable terrain.

Severe pressures including habitat loss and degradation, illegal collection, and indiscriminate killing by local villagers, threaten this animal with imminent extinction. After many reports of a beaded lizard from the Motagua valley of Guatemala, scientists first observed a specimen in 1984 and later described Heloderma charlesbogerti in 1988. With no reports of live individuals from the time of its description into the mid-1990s, the lizard was thought by some scientists to be extinct.

Project Heloderma: The Beginning

In June 2002, Zootropic, a Guatemalan NGO, began a long-term, integrated conservation program for the Guatemalan beaded lizard (Heloderma charlesbogerti) involving field research, public education, local community capacity building, and habitat protection. In that year, Luis Alvarado and Rodrigo Botrán, of Zootropic, were searching for a student to conduct a research project on Heloderma. Dr. Michael Dix of the University of Guatemala put them in contact with Daniel Ariano, a 20-yr-old undergraduate with a keen interest in both herpetology and conservation. This interest led him to accept the challenge and risk of trying to develop a research project with such a rare and elusive species.

As is true of many grass roots conservation efforts, the start of Project Heloderma was not easy. Only very limited funding ($40/mo) was available from Zootropic, but was sufficient to cover two bus trips to the research site. No vehicles were available and the trip from Guatemala City to the site in the Motagua valley took 7 h each way. Daniel was able on his own to secure funds from other sources to be able to conduct research and to eat.

Again, as is true of many conservation projects, trial-and-error and luck play major roles in success or failure. Knowing virtually nothing about the species, Daniel traveled to the type locality and interviewed local villagers about their experience with beaded lizards and its continued existence in the area. As luck would have it, a keystone step in the success of the project occurred when Daniel met a particular villager named Gilberto Salazar. A local newspaper ran an article highlighting El Arenal, a town in the Motagua valley, featuring a photo of Gilberto with a Guatemalan beaded lizard. The caption on the photo described Gilberto as a poacher who sold the animals to traders. This photo was proof that the lizard still existed, at least until recently, and that Gilberto knew how to find them, so Daniel went to search for the town and to look for Gilberto.

Once Daniel finally found Gilberto there was more work to be done. An angry Gilberto confronted Daniel at gun point to find out what he wanted from him. After a long conversation, from a distance, Gilberto finally agreed to show Daniel beaded lizard habitat. This was the beginning of a wonderful association with the program in which Gilberto transitioned from a poacher to an active conservationist, became an expert in radio telemetry techniques, and is now employed by Project Heloderma.

Overall Conservation Program

In the 8-plus yr that Project Heloderma has been active, the beaded lizard has become a flagship species for the Motagua Valley and the impetus for the government of Guatemala to undertake initiatives to conserve its dry forest habitat. In November 2005, with sponsorship from The Nature Conservancy, Zootropic organized and hosted a strategic planning workshop in Guatemala that developed a National Strategy for Guatemalan Beaded Lizard Conservation. The workshop was attended by all the principal governmental agencies responsible for conservation initiatives in Guatemala, along with outside conservation groups and zoological institutions including: Dr. Daniel Beck, Detroit Zoo, Arizona-Sonora Desert Museum, and Zoo Atlanta. In 2006, the Project’s capacity, vision and technical capability were greatly enhanced by the addition of the International Reptile Conservation Foundation (IRCF) as a new partner. At present, the Project’s principal partners are Zootropic, IRCF, and Zoo Atlanta. Our mission is to conserve the critically endangered Guatemalan beaded lizard and its habitat in the Motagua Valley by means of an integrated program of research, public awareness and education, local capacity building, ecological restoration, head start and reintroduction efforts, and habitat management.

In situ Field Initiatives

The initial field surveys and subsequent radio telemetry studies established and provided essential data concerning population size, population viability, activity, land use, home-range size, shelter use during the dry season and for egg laying, reproductive biology, and important micro-habitats. Using this data as a guide, a critical piece of mountain habitat was purchased (funded by grants from Eli Lilly, Reptile Breeders Expo, Toronto Zoo, and Oklahoma City Zoo); the site comprises a 125 acre footprint (total land area of 1,000 acres).

In addition, funding for a stage-one breeding/head start facility has been obtained (funded by a grant from FCA of Guatemala) and is currently in the design phase. Once completed, local villagers will be hired to run the day-to-day operations. Recently, Zootropic has set up three pairs of Guatemalan beaded lizards in breeding groups in conjunction with the Museum of Natural History in Guatemala City and with improved husbandry based on field study data; these animals have produced eggs (non-viable) for the first time in 7 yr. With this news, there is hope that these animals will serve as the founding group once the breeding facility is completed. The data from the Project’s field studies has served to successfully bring about the elevation of the beaded lizard to CITES Appendix I conservation status.

Veterinary involvement to date has consisted of transmitter placement, visual examination, and hands-on health assessments each year. In 2011, plans are in place to begin gathering hematologic data during different seasons. This data will include CBC and chemistry panels, as well as determination of serum concentrations of select vitamins and minerals.

Education Initiatives

The Guatemalan beaded lizard has historically been greatly feared by the local people due to its notoriety as a highly venomous and very dangerous animal. According to myth, the lizard stings with its tail (hence the name Escorpión or scorpion); its venom is so powerful that it can pass through the shadow of a person to envenomate them; its breath can cause dizziness and disorientation in people; and lightning only strikes where a lizard is hidden underground.

The education program has concentrated on dispelling these myths and involving the local people in the conservation process. Today the education program, with the help of two grants from the Disney Worldwide Conservation Fund, has been expanded to a lecture series complete with a portable speaker system. With the donation of a four-wheel drive vehicle (grant from IRCF) the program is able to visit all the schools surrounding potential lizard habitat in the valley. The Disney grants provided for “needs based” distribution of conservation themed t-shirts to the children at each school visited in 2007–2008; followed by notebooks, paper, and pencils (like gold in the valley) in 2008–2009 and computers for each school for 2009–2010.

By the end of 2008, more than 30,000 school children and farmers in the Motagua Valley had attended the program, which includes presentation of live specimens, informational handouts, interactive magazines, and learner assessment questionnaires. The people have learned through this interaction (especially with the live beaded lizard) that the myths they grew up with are false. Directly because of this program the number of lizards killed by local inhabitants has been reduced to near zero. The program maintains a high profile locally, and recently has garnered some international awareness through public media, international meetings, and political outreach. Indeed, a cement company in the valley calls its product “Escorpión – a cement strong enough to resist the dry climate of Motagua.” In addition, this program has fostered a great deal of local community pride by involving people in the conservation of the endemic beaded lizard. This ability to work with local villagers and top governmental agencies is critical for a long-term conservation program.


Speaker Information
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Brad A. Lock, DVM, DACZM
Zoo Atlanta
Atlanta, GA, USA

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