Mauremys annamensis

Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Megaclassis: Osteichthyes
Cladus: Sarcopterygii
Cladus: Rhipidistia
Cladus: Tetrapodomorpha
Cladus: Eotetrapodiformes
Cladus: Elpistostegalia
Superclassis: Tetrapoda
Cladus: Reptiliomorpha
Cladus: Amniota
Classis: Reptilia
Cladus: Eureptilia
Cladus: Romeriida
Subclassis: Diapsida
Cladus: Sauria
Cladus: Archelosauria
Division: Pan-Testudines
Division: Testudinata
Ordo: Testudines
Subordo: Cryptodira
Superfamilia: Testudinoidea

Familia: Geoemydidae
Subfamilia: Geoemydinae
Genus: Mauremys
Species: Mauremys annamensis
Name

Mauremys annamensis Siebenrock, 1903
References

IUCN: Mauremys annamensis (Siebenrock, 1903) (Critically Endangered)

Vernacular names
čeština: želva annamská
Deutsch: Annam-Bachschildkröte
English: Vietnamese Pond Turtle, Annam leaf turtle

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

It can be distinguished from its relatives by its color pattern: the head is dark with three or four yellow stripes down the side. The plastron (belly shield) is firmly attached, yellow or orange, with a black blotch on each scute.[4]

Endemic to a small area in central Vietnam,[4] it was reportedly abundant in the 1930s, but all field surveys after 1941 had failed to locate any individuals in the wild.[5] As it was occasionally seen traded as food, it was not yet extinct in the wild however.[6]

In 2006, a wild population of M. annamensis was found near Hội An in Quảng Nam Province.[5] Despite its rarity, specimens have been observed for sale in China and Hong Kong, and have been illicitly imported into the USA. A small number are being captive-bred on Hainan Island in southern China,[6] as well as at the Cuc Phuong Turtle Conservation Center located in Cúc Phương National Park in northern Vietnam.[7] The species is nonetheless close to extinction in the wild, as illegal hunting seems to continue. Reintroduction programmes of captive bred specimens are currently in progress. [8]

Hybridization with other Geoemydidae genera is known to occur. The species has produced hybrids with the Malayan box turtle in captivity. In addition, the supposed new species Ocadia glyphistoma has turned out to be the offspring of a male Chinese stripe-necked turtle and a female of the present species; it might have been taken from the wild or also have been captive-bred. Captive Vietnamese pond turtles - which are occasionally available to experienced hobbyists, under the auspices of the IUCN-coordinated captive-breeding program - must therefore never be housed with related species.[9] Hybridization in the wild would not seem to constitute a major threat, as the two parent species of "Ocadia" × glyphistoma are not closely related, and the hybrids are thus likely to be sterile. However, with a species as rare as the Vietnamese pond turtle, more research into this issue is certainly necessary.
References

McCormack, T.; van Dijk, P.P.; Roberton, S.; Dawson, J.E. (2020). "Mauremys annamensis". IUCN Red List of Threatened Species. 2020: e.T12876A182354172. doi:10.2305/IUCN.UK.2020-3.RLTS.T12876A182354172.en. Retrieved 19 November 2021.
"Appendices | CITES". cites.org. Retrieved 2022-01-14.
Fritz Uwe; Peter Havaš (2007). "Checklist of Chelonians of the World" (PDF). Vertebrate Zoology. 57 (2): 228. ISSN 1864-5755. Archived from the original (PDF) on 2010-12-17. Retrieved 29 May 2012.
Asian Turtle Network: Mauremys annamensis. Version of August, 2006. Retrieved 9 December 2006.
Asian Turtle Network: Mauremys annamensis recorded in natural habitat after 65 years. Version of 2006-DEC-07. Retrieved 3 September 2007.
IUCN: Inclusion of Annam Pond Turtle Annamemys (Mauremys) annamensis in Appendix II. Retrieved 9 December 2006. Archived July 21, 2011, at the Wayback Machine
Asian Turtle Network: Cuc Phuong Turtle Conservation Center and by IUCN-affiliated breeders. Retrieved 9 December 2006.
"Blijdorp maakt het verschil". 2018-01-28.

Parham et al. (2001), Buskirk et al. (2005).

Buskirk, James R.; Parham, James F. & Feldman, Chris R. (2005): On the hybridisation between two distantly related Asian turtles (Testudines: Sacalia × Mauremys). Salamandra 41: 21–26. PDF fulltext[permanent dead link]
Parham, James Ford; Simison, W. Brian; Kozak, Kenneth H.; Feldman, Chris R. & Shi, Haitao (2001): New Chinese turtles: endangered or invalid? A reassessment of two species using mitochondrial DNA, allozyme electrophoresis and known-locality specimens. Animal Conservation 4 (4): 357–367. HTML abstract Erratum: Animal Conservation 5 (1): 86 HTML abstract