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World’s Top Turtle and Tortoise Experts Release Largest Comprehensive Study of Extinction Risks and Provide Roadmap for Recovery

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Global Wildlife Conservation (GWC) changed its name to Re:wild in 2021

Ending the Wildlife Trade Will Help Species Immediately

A radiated tortoise. A radiated tortoise in Madagascar. (Photo by Craig Stanford)

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June 22, 2020

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Fifty-one experts with the International Union for Conservation of Nature’s (IUCN) Tortoise and Freshwater Turtle Specialist Group published the most comprehensive study of the extinction risks for turtles and tortoises today, June 22, in Current Biology.  More than half of all 360 turtle and tortoise species face imminent extinction, but the paper’s authors offered recommendations that would reverse the decline and save many species. According to their analysis and research, ending the trade in wild turtles for food and the pet trade is a key part of a global conservation strategy.

Hundreds of thousands of turtles and tortoises are collected for the wildlife trade every year. Turtles and tortoises are long-lived and slow-growing species, which means they can’t reproduce fast enough to replenish their populations that are taken from the wild. Some of the biggest confiscations have occurred in the past few years. Last May, Mexican authorities made the largest-ever confiscation of live turtles. Fifteen thousand turtles were being smuggled from Mexico to China. In 2018, two confiscations of radiated tortoises in Madagascar, just months apart, totaled nearly 18,000 animals.

Three species of turtles and tortoises have gone extinct in the last two centuries, but that number will climb if the trade isn’t curbed, the study’s authors say.

“A long slow life trajectory worked for them for millions of years, but it doesn't serve them well in the modern world in the face of humans poaching them and destroying their habitat,” said Craig Stanford, lead author of the paper, professor of biological sciences at University of Southern California, and chair of the IUCN SSC Tortoise and Freshwater Turtle Specialist Group. “Thirty years ago, the radiated tortoise was one of the most abundant tortoises on the planet.  However, following a coup in 2009, poaching increased dramatically, and their population has been in freefall since then because of the combined effects of smuggling for the international pet trade and consumption of their meat by local people.”

If humans reduce the demand for turtles and their eggs for food, it would take pressure off of many threatened species. The authors of the paper urge governments to enforce existing laws and effectively implement the CITES convention, which regulates the international trade of endangered and threatened species to prevent overexploitation.

“International trade in turtles, and their parts and products, has been recognized for decades as a severe threat to some turtle species and populations,” said Peter Paul van Dijk, director of the turtle conservation program at Global Wildlife Conservation. “What has not been widely recognized is how the global demand for turtles rotates between countries and continents, vacuuming up one population and species after another, with disastrous results for their survival.”

The wildlife trade threatens many other species with extinction in addition to tortoises and turtles, and even poses health risks to humans. SARS-CoV-2, which causes COVID-19 in humans, likely originated in horseshoe bats before jumping to a different species and then humans. Global Wildlife Conservation, which has two authors on the paper, WildAid and Wildlife Conservation Society formed the Coalition to End The Trade to prevent future pandemics caused by zoonotic disease outbreaks and save endangered species.

In addition to ending the wildlife trade, there are other actions that would protect turtles and tortoises. Many of their habitats in the wild are under threat, often destroyed as a result of commercial agriculture, cattle ranching, pollution, desertification, hydropower projects and habitat fragmentation. However, there are still habitats that are healthy enough to support large numbers of turtles and tortoises. Scientists have identified 16 hotspots around the world that are home to a wide diversity of species and where protection of remaining natural areas will make a great difference.

The paper’s authors argue that local communities must be included as partners in protecting turtles and tortoises and their habitats. Ecotourism may be a model that can benefit humans and species living near them.

“There are a number of other ways to encourage turtle conservation, including stimulating turtle-based ecotourism—also known as turtle-watching and turtle life-listing—following a bird-watching model,” said Russ Mittermeier, chief conservation officer for Global Wildlife Conservation. “What is more, we need to highlight more clearly the roles that turtles play in providing critical ecosystem services such as energy flow, nutrient recycling, scavenging, soil dynamics, and seed dispersal  in the terrestrial, freshwater, and marine ecosystems in which they occur, all of which tend to be overlooked.”

Technology can also help conservation biologists monitor habitats and populations. Side-scan sonar and e-DNA allows scientists to identify where turtles are living without disturbing them. Other tracking technology like GPS and radio telemetry can also help scientists learn more about turtle and tortoise movements and habitat use.

Although it is difficult to breed some species in captivity, conservation breeding and head starting programs could help some species of turtles and tortoises, but in order to be effective there must be natural habitat remaining in which to release the animals. The Española giant Galapagos tortoise and the Australian western swamp turtle were both rescued from near extinction by captive breeding efforts.

Additional Quotes

Brian Horne, Wildlife Conservation Society, freshwater turtle and tortoise coordinator

“Turtles provide a wealth of ecosystem services, and this paper illustrates that for the rarest turtles, exploitation is the major extinction threat, not habitat loss or degradation. By addressing the illicit trade of turtles and tortoises, and working with local people, we can prevent further species’ declines, and ultimately more extinctions. Rewilding of these rarest turtles will take decades as turtles are often slow to mature and many species do not produce large numbers of hatchlings. We have the tools, knowledge, and ability to recover functionally extinct species of turtles, as has been shown by the successful rewilding of captive-bred Burmese Star Tortoises.”

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Caption:  A radiated tortoise in Madagascar. (Photo courtesy of Craig Stanford)

Global Wildlife Conservation

GWC conserves the diversity of life on Earth by safeguarding wildlands, protecting wildlife and supporting guardians. We maximize our impact through scientific research, biodiversity exploration, habitat conservation, protected area management, wildlife crime prevention, endangered species recovery, and conservation leadership cultivation. Learn more at https://globalwildlife.org

 

Contact

Devin Murphy

Global Wildlife Conservation

dmurphy@globalwildlife.org

512-686-6188

 

Lindsay Renick Mayer

Global Wildlife Conservation

lrenickmayer@globalwildlife.org

512-686-6225

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