Golden coin turtle

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Golden coin turtle
Cuora trifasciata.jpg
CITES Appendix II (CITES) [2]
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Testudines
Suborder: Cryptodira
Superfamily: Testudinoidea
Family: Geoemydidae
Genus: Cuora
Species:
C. trifasciata
Binomial name
Cuora trifasciata
(Bell, 1825)
Synonyms [3] [4]
  • Sternothaerus trifasciatus
    Bell, 1825
  • Emys (Cistuda) trifasciata
    Gray, 1831
  • Cistuda trifasciata
    — Gray, 1831
  • Cistudo trifasciata
    A.M.C. Duméril & Bibron, 1835
  • Cuora trifasciata
    — Gray, 1856
  • Pyxidemys trifasciata
    Fitzinger, 1861
  • Terrapene trifasciata
    Strauch, 1862
  • Cyclemys trifasciata
    Boulenger, 1889
  • Cuora [cyclornata] cyclornata
    Blanck, McCord & Le, 2006
  • Cuora cyclornata meieri
    Blanck, McCord & Le, 2006
  • Pyxiclemmys trifasciata
    Vetter, 2006
  • Cuora trifasciata
    Zhou, McCord, Blanck & P. Li, 2007

The golden coin turtle (Cuora trifasciata), also known commonly as the Chinese three-banded box turtle and the Chinese three-striped box turtle, is a species of turtle in the family Geoemydidae. The species is native to southern China. [3] There are two recognized subspecies.

Contents

Geographic range

C. trifasciata is distributed in China, but only on the island of Hainan (it is extirpated from the mainland Guangdong, Guangxi, and Fujian provinces), as well as Hong Kong. [3] The populations from Vietnam and Laos are now regarded as a separate species, the Vietnamese three-striped box turtle (C. cyclornata). [5]

Description

Plastron Trifasciata2.jpg
Plastron

C. trifasciata has three distinct black stripes on its brown carapace, with a yellow, slightly hooked upper jaw and a yellow stripe extending from the back of the mouth. The plastron is mostly black with a yellow border.

Subspecies

Two subspecies are recognized as being valid, including the nominotypical subspecies. [4]

Nota bene : A trinomial authority in parentheses indicates that the subspecies was originally described in a genus other than Cuora .

Diet

In Hong Kong, C. trifasciata feeds mainly on fishes, frogs, and carrion, but remains of crabs, snails, and insects have also been found in its feces. It can grow up to a straight-line carapace length of 25 cm (10 in). [6]

Hybridization

C. trifasciata hybridizes very easily with its relatives in captivity and in the wild, and hybrids may be fertile. Several of these have been described as new species, such as the Fujian pond turtle (Mauremys × iversoni), a hybrid between (usually) males of this species and females of the Asian yellow pond turtle (Mauremys mutica). In addition, the golden coin turtle is suspected to be a parent of two supposed species, the Chinese false-eyed turtle and Philippen's striped turtle. [7]

Conservation

The species C. trifasciata is considered critically endangered by the IUCN. [8] It is used in folk medicine, [9] e.g. as the key ingredient for the Chinese medicinal dessert guīlínggāo (龜苓膏); thus, it is under threat because of unsustainable hunting. It is one of the most endangered turtle species in the world, according to a 2003 assessment by the IUCN.[ citation needed ]C. trifasciata is listed among Turtle Conservation Coalition's 25 most endangered tortoises and freshwater turtles. [10]

Captive specimen on display at the Smithsonian National Zoological Park, Washington, DC Golden coin turtle.JPG
Captive specimen on display at the Smithsonian National Zoological Park, Washington, DC

Farming

C. trifasciata is raised on some of China's turtle farms. Based on the data from a large sample (almost one-half of all registered turtle farms in the country), researchers estimated that the turtle farmers participating in the survey had the total herd of 115,900 turtles of this species; they sold 20,600 turtles of this species per year, with the estimated value of almost US$37 million. This would make a farm-raised C. trifasciata worth almost $1,800, making them by far the most expensive species tabulated in the survey (by comparison, a common Pelodiscus sinensis raised for food would be worth under $7, and a Cuora mouhotii , sold for the pet trade, around $80). Taking into account the registered farms that did not respond to the survey, as well as the unregistered producers, the total numbers must be significantly higher. [11] Wild C. trifasciata turtles are far more valuable than farmed-raised turtles of this species to both traditional Chinese medicine practitioners and illegal wildlife traders. [12] [13] [14] The gender of C. trifasciata is determined by gestation temperatures. [10] [14] Due to incubation temperatures at farms in warm lowlands, farms have only been able to produce females. [10] [14] This increased the price of wild-caught males to $20,000. [10] [14] Most farmed C. trifasciata turtles are hybrids, which can escape and establish populations, causing genetic pollution. [13] [14] [15] [16]

The largest C. trifasciata farming operation is said to be located in Boluo County, Guangdong. According to the farm's founder Li Yi (李艺), the farm was started in 1989 with eight wild turtles (two males and six females) bought at a local market, and now has "over 2000" turtles. [17] According to the farm's site, captive-born turtles start breeding at 8 years of age. [18]

Related Research Articles

<i>Guilinggao</i> Turtle shell-based Chinese medicine

Guilinggao, also known as tortoise jelly or turtle powder, is a jelly-like Chinese medicine, also sold as a dessert. It was traditionally made from the gao, or paste of the plastron from the turtle Cuora trifasciata and a variety of herbal products, in particular, China roots Smilax glabra . Although the critically endangered golden coin turtle is commercially farmed in modern China, it is extremely expensive; therefore, even when turtle-derived ingredients are used in commercially available guilinggao, they come from other, more commonly available, turtle species.

<span class="mw-page-title-main">Keeled box turtle</span> Species of turtle

The keeled box turtle is a species of turtle in the family Geoemydidae. The species is endemic to Asia.

<span class="mw-page-title-main">Amboina box turtle</span> Species of turtle

The Amboina box turtle or Southeast Asian box turtle is a species of Asian box turtle widely distributed across Southeast Asia. It is native to the Asian mainland from northeast India, through Bangladesh, Burma and Thailand, across Laos, Cambodia, Vietnam, and Malaysia. It is also found on the archipelagos of Indonesia and the Philippines.

<span class="mw-page-title-main">Asian box turtle</span> Genus of turtles

Asian box turtles are turtles of the genus Cuora in the family Geoemydidae. About 12 extant species are recognized. The keeled box turtle is often included in this genus, or separated in the monotypic genus Pyxidea. Genus Cuora is distributed from China to Indonesia and the Philippines, throughout mainland Southeast Asia, and into northern India and Bhutan.

<span class="mw-page-title-main">Chinese box turtle</span> Species of turtle

The Chinese box turtle, also known as the yellow-margined box turtle, or golden-headed turtle, is a species of Asian box turtle. Taxonomically, it is called Cuora flavomarginata.

<span class="mw-page-title-main">Vietnamese pond turtle</span> Species of turtle

The Vietnamese pond turtle or Annam leaf turtle is a species of turtle in the family Geoemydidae.

<span class="mw-page-title-main">Chinese pond turtle</span> Species of turtle

Mauremys reevesii, commonly known as the Chinese pond turtle, the Chinese three-keeled pond turtle, or Reeves' turtle, is a species of turtle in the family Geoemydidae, a family which was formerly called Bataguridae. The species is native to East Asia.

The Fujian pond turtle is a possibly also naturally occurring intergeneric hybrid turtle in the family Geoemydidae produced in larger numbers by Chinese turtle farms as a "copy" of the golden coin turtle Cuora trifasciata. It appears to occur in China and Vietnam. Before its actual origin became known, it was listed as data deficient in the IUCN Red List.

<i>Mauremys</i> Genus of turtles

Mauremys is a genus of turtles in the family Geoemydidae.

<span class="mw-page-title-main">Yellow pond turtle</span> Species of turtle

The yellow pond turtle, is a medium-sized, semiaquatic turtle in the family Geoemydidae. This species has a characteristic broad yellow stripe extending behind the eye and down the neck; the carapace ranges in color from grayish brown to brown, and the plastron is yellow or orange with black blotches along the outer edges. It is native to East Asia, ranging from central Vietnam and Laos, north through the coastal provinces of south and central China, with insular populations known from Taiwan, Hainan and the Ryukyu Islands. Although populations in the southern Ryukyus are thought to be native, populations in the northern and central Ryukyus, as well as central Japan, are believed to have been introduced as a result of imports from Taiwan.

Mauremys pritchardi is an interspecific hybrid turtle in the family Geoemydidae. M. pritchardi, described to be from Myanmar, has been found in the wild in China and Japan, and is produced to some extent in Chinese turtle farms. It was listed as data deficient in the IUCN Red List before its actual origin became known.

"Mauremys" glyphistoma is a hybrid turtle in the family Geoemydidae. Originally described as a new species supposedly endemic to Guangxi/China; it was classified as Data Deficient in the IUCN Red List.

Philippen's striped turtle, "Mauremys" philippeni, has recently shown to be an intergeneric hybrid between a male Mauremys sinensis and a female Cuora trifasciata.

The Chinese false-eyed turtle is a hybrid species of turtle in the family Geoemydidae. It is a hybrid between a male golden coin turtle and a female four-eyed turtle. While formerly considered to be a wild type species believed to be originally from Hainan, it is now known only from pet trade type specimens.

<span class="mw-page-title-main">Vietnamese three-striped box turtle</span> Species of turtle

The Vietnamese three-striped box turtle or green rice turtle is a species of the Southeast Asian genus Cuora. It is distributed from the extreme southern part of the Chinese Guangxi province southwards to central Vietnam and central Laos. This species reaches up to 30 cm straight carapace length and is thus the largest Cuora species. Due to demand of traditional Chinese medicine, this species is nearly extinct in the wild, but is readily bred on Chinese turtle farms. Extremely high prices are paid for this species in China. It can be distinguished from Cuora trifasciata by its larger size and generally more oval or rounder shell, which is usually also flatter, a white, pink, or orange chin, and head coloration with an orange-brownish-olive dorsal head pattern and less black pigment.

Cuora serrata, originally described as Cuora galbinifrons serrata and later considered a distinct species, are hybrid turtles as shown by genetic studies. These hybrids are bred in the wild and were documented for the first time in the wild in 2005, but not in captivity as "novelty" pets as suggested by James Parham and Bryan Stuart, between the keeled box turtle and taxa of the Indochinese box turtle complex. Unnamed hybrids of several other Cuora taxa are also known, as are intergeneric hybrids like Mauremys iversoni, a hybrid between Cuora trifasciata and Mauremys mutica which are intentionally produced in Chinese turtle farms.

<i>Cyclemys</i> Genus of turtles

Cyclemys is a genus of freshwater turtles, commonly referred to as Asian leaf turtles, from the family Geoemydidae. The genus occurs throughout Southeast and South Asia, and currently contains seven species.

<span class="mw-page-title-main">Turtle farming</span> Practice of raising turtles commercially

Turtle farming is the practice of raising turtles and tortoises of various species commercially. Raised animals are sold for use as gourmet food, traditional medicine ingredients, or as pets. Some farms also sell young animals to other farms, either as breeding stock, or more commonly to be raised there to a larger size for subsequent resale.

John L. Behler was an American naturalist, herpetologist, author, and activist known for his work in conserving endangered species of turtles, snakes, and other reptiles. He served as curator of herpetology at the Bronx Zoo, part of the Wildlife Conservation Society from 1976 to 2006. He co-chaired the IUCN Tortoise and Freshwater Turtle Specialist Group, and was a founding member of the Turtle Survival Alliance, which co-present the Behler Turtle Conservation Award with the Turtle Conservancy and Turtle Conservation Fund. The Behler Turtle Conservation Award is a major annual award to honor leadership in the field of freshwater turtle and tortoise conservation. The Turtle Conservancy named its captive breeding center, the Behler Chelonian Center, in his honor.

References

  1. Fong, J.; Hoang, H.; Horne, B.D.; Li, P.; McCormack, T.; Rao, D.-Q.; Timmins, R.J.; Wang, L. (2020). "Cuora trifasciata". IUCN Red List of Threatened Species . 2020: e.T123768950A123769768. doi: 10.2305/IUCN.UK.2020-2.RLTS.T123768950A123769768.en . Retrieved 18 November 2021.
  2. "Appendices | CITES". cites.org. Retrieved 2022-01-14.
  3. 1 2 3 Fritz Uwe; Peter Havaš (2007). "Checklist of Chelonians of the World". Vertebrate Zoology. 57 (2): 218–219. doi: 10.3897/vz.57.e30895 .
  4. 1 2 Species Cuora trifasciata at The Reptile Database www.reptile-database.org.
  5. Blanck et al. (2006)
  6. "Reptile of Hong Kong". www.biosch.hku.hk. Retrieved 2020-08-27.
  7. Parham et al. (2001), Buskirk et al. (2005)
  8. ATTWG (2000)
  9. da Nóbrega Alves et al. (2008)
  10. 1 2 3 4 "Turtles in Trouble: The World's 25+ Most Endangered Tortoises and Freshwater Turtles" (PDF). International Union for Conservation of Nature. February 2011. Archived from the original (PDF) on 2015-09-05. Retrieved 2016-02-01.
  11. Shi, Haitao; Parham, James F; Fan, Zhiyong; Hong, Meiling; Yin, Feng (2008-01-01). "Evidence for the massive scale of turtle farming in China". Oryx. 42: 147–150. doi: 10.1017/S0030605308000562 .
  12. Cavaliere, Courtney (2010). "How TCM Purchases in Western Markets Can Impact Bear Farming Practices in Asia". HerbalGram. American Botanical Council. Retrieved 2 February 2016.
  13. 1 2 "Conclusions from the Workshop on Trade in Tortoises and Freshwater Turtles in Asia". Asian Turtle Trade Working Group. 1 December 1999.
  14. 1 2 3 4 5 Platt, John R. (20 March 2013). "5 Turtles from Nearly Extinct Species Fly Home to Hong Kong". Scientific American Blog Network. Retrieved 2016-02-01.
  15. Norris, Scott (27 March 2007). "China's Turtle Farms Threaten Rare Species, Experts Say". National Geographic News. Archived from the original on April 28, 2007.
  16. James, Parham; Shi, Haitao (2001). "The Discovery of Mauremys iversoni-like Turtles at a Turtle Farm in Hainan Province, China: The Counterfeit Golden Coin". Asiatic Herpetological Research.
  17. 财富人物:金钱龟"中国第一人" ("People and fortune: Country's No. 1 Golden-coin-turtle man") 2007-09-24 (in Chinese)
  18. Liyi Gold-coin Turtle Breeding Farm: Breeding and reproduction [ permanent dead link ]

Further reading