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Chelonoidis porteri (ROTHSCHILD, 1903)

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Higher TaxaTestudinidae, Testudinoidea, Testudines (turtles)
Common NamesE: Indefatigable Island Giant Tortoise 
SynonymTestudo porteri ROTHSCHILD 1903:119
Testudo nigrita DUMÉRIL & BIBRON 1835: 80 (nomen dubium)
Testudo nigrita — DUMÉRIL & BIBRON 1854: 220 (nomen dubium)
Testudo nigrita — GÜNTHER 1874: 312
Testudo elephantopus nigrita — MERTENS & WERMUTH 1955
Geochelone elephantopus porteri — PRITCHARD 1967
Geochelone elephantopus porteri — ALDERTON 1988
Geochelone porteri — ERNST & BARBOUR 1989
Geochelone nigra nigrita — IVERSON 1992
Chelonoidis nigra nigrita — DAVID 1994
Geochelone elephantopus porteri — SWASH & STILL 2000
Geochelone nigrita — CISNEROS-HEREDIA 2006
Geochelone porteri — POULAKAKIS et al. 2008
Chelonoidis porteri — RHODIN et al. 2010
Chelonoidis porteri — TTWG 2012: 277
Chelonoidis nigritus — OLSON & DAVID 2014
Chelonoidis porteri — TTWG 2014: 396
Chelonoidis porteri — TTWG 2017: 131 
DistributionEcuador: Galapagos (Indefatigable = Santa Cruz)

Type locality: Indefatigable  
TypesType: BMNH 1949.1.4.38, 1974.2464 (types of T. porteri)
Syntypes: MNHN-RA 9313 and BMNH 1949.1.4.37, fide Iverson 1992: 250 [nigrita] 
CommentConservation: IUCN: Endangered C2a (1996), as Chelonoidis nigra

porteri; CITES: Appendix I, as Chelonoidis nigra.

Similar species: a population of what used to be called C. porteri has been described as Chelonoidis donfaustoi POULAKAKIS et al. 2015.

Taxonomy: This is a member of the Chelonoidis nigra species complex, variably considered subspecies of C. nigra or as valid species. Rhodin et al. (2010) and the TTWG 2012 listed them separately but under the heading “C. nigra species complex”. 
  • Alderton, D. 1988. Turtles and tortoises of the world. Facts on File, New York.
  • Cisneros-Heredia, D.F. 2006. Turtles of the Tiputini Biodiversity Station with remarks on the diversity and distribution of the Testudines from Ecuador. Biota Neotrop. 6 (1): 1-16 - get paper here
  • David, Patrick 1994. Liste des reptiles actuels du monde. I. Chelonii. Dumerilia 1: 7-127
  • Duméril, A. M.C., G. BIBRON & A. DUMÉRIL 1854. Erpétologie générale ou Histoire Naturelle complète des Reptiles. Vol. 9. Paris, XX + 440 S. - get paper here
  • Duméril, A.M.C., and G. Bibron. 1835. Erpétologie Générale ou Histoire Naturelle Complète des Reptiles, Vol. 2. Librairie Encyclopédique de Roret, Paris, iv + 680 p. - get paper here
  • Ernst,C.H. and Barbour,R.W. 1989. Turtles of the World. Smithsonian Institution Press, Washington D.C. - London
  • Günther, A. 1874. Description of the living and extinct races of gigantic land-tortoises. Parts I. and II. introduction and the tortoises of the Galapagos islands. Ann. Mag. nat. Hist. (4) 14: 311-313 - get paper here
  • Iverson, J.B. 1992. A revised Checklist with Distribution Maps of the Turtles of the World. Richmond, Indiana, privately published, 363 pp.
  • Mertens, R., and H. Wermuth 1955. Die rezenten Schildkröten, Krokodile und Brückenechsen. Zoologische Jahrbücher. Abteilung für Allgemeine Systematik, Ökologie und Geographie der Tiere, Gustav Fischer Verlag, Jena. 83(5): 323-440.
  • Olson, Storrs L. 2015. More on the status of Testudo nigra Quoy and Gaimard and Testudo nigrita Duméril and Bibron as nomina dubia for Galapagos tortoises (Testudines: Testudinidae). Proceedings of the Biological Society of Washington 128 (4): 204-208 - get paper here
  • Olson, Storrs L. and Normand David 2014. The gender of the tortoise genus Chelonoidis Fitzinger, 1835 (Testudines: Testudinidae). Proceedings of the Biological Society of Washington 126 (4): 393-394. - get paper here
  • Poulakakis N, Edwards DL, Chiari Y, Garrick RC, Russello MA, Benavides E, et al. 2015. Description of a New Galapagos Giant Tortoise Species (Chelonoidis; Testudines: Testudinidae) from Cerro Fatal on Santa Cruz Island. PLoS One 10 (10): e0138779. doi:10.1371/journal.pone.0138779 - get paper here
  • Poulakakis, Nikos; Scott Glaberman, Michael Russello, Luciano B.Beheregaray, Claudio Ciofi, Jeffrey R. Powell and Adalgisa Caccone 2008. Historical DNA analysis reveals living descendants of an extinct species of Galápagos tortoise. PNAS 105 (40): 15464–15469 - get paper here
  • Rothschild, W. 1903. Description of a new species of gigantic land tortoise from Indefatigable Island. Novitates Zoologicae 10:119 - get paper here
  • Swash, A. & Still, R. 2000. Birds, Mammals and Reptiles of the Galapagos Islands. Pica Press, 168 pp.
  • Torres-Carvajal O, Pazmiño-Otamendi G, Salazar-Valenzuela D. 2019. Reptiles of Ecuador: a resource-rich portal, with a dynamic checklist and photographic guides. Amphibian & Reptile Conservation 13 (1): [General Section]: 209–229 (e178) - get paper here
  • TTWG [Peter Paul van Dijk, John B. Iverson, Anders G.J. Rhodin, H. Bradley Shaffer, and Roger Bour] 2014. Turtles of the World, 7th Edition: Annotated Checklist of Taxonomy, Synonymy, Distribution with Maps, and Conservation Status. 000.v7. Chelonian Research Monographs (ISSN 1088-7105) No. 5, doi:10.3854/crm.5.000.checklist.v7.2014 - get paper here
  • TTWG; Anders G.J. Rhodin, John B. iverson, Roger Bour, Uwe Fritz, Arthur GeoRges, H. BRadley Shaffer, and Peter Paul van Dijk 2017. Turtles of the World: Annotated Checklist and Atlas of Taxonomy, Synonymy, Distribution, and Conservation Status (8th Ed.). In: Rhodin, A.G.J., Iverson, J.B., van Dijk, P.P., Saumure, R.A., Buhlmann, K.A., Pritchard, P.C.H., and Mittermeier, R.A. (Ed Chelonian Research Monographs 7:1–292. doi: 10.3854/crm.7.checklist.atlas.v8.2017 - get paper here
  • TTWG; Dijk, Peter Paul van; John B. Iverson, H. Bradley Shaffer; Roger Bour & Anders G.J. Rhodin [turtle taxonomy working group] 2012. Turtles of the World, 2012 Update: Annotated Checklist of Taxonomy, Synonymy, Distribution, and Conservation Status. Chelonian Research Monographs No. 5, doi:10.3854/crm.5.000.checklist.v5.2012 - get paper here
  • TTWG; Rhodin, A.G.J.; van Dijk, P.P.; Iverson, J.B. & Shaffer, H.B. [turtle taxonomy working group] 2010. Turtles of the World, 2010 Update: Annotated Checklist of Taxonomy, Synonymy, Distribution, and Conservation Status. Chelonian Research Monographs (ISSN 1088-7105) No. 5, doi:10.3854/crm.5.000.checklist.v3.2010 - get paper here
  • Waite, Edgar R. 1899. Observations on Testudo nigrita, Dum. & Bibr. Rec. Austral. Mus. 3 (5): 95-103 - get paper here
  • Wauters, Nina; Wouter Dekoninck, Zoltan T. Nagy, and Denis Fournier 2018. Impact of Laying Date and Fire Ants on Hatchlings of Chelonoidis porteri on Santa Cruz Island, Galápagos, Ecuador. Herp. Cons. Biol. 13 (2): 479–487 - get paper here
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