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Recent research indicates that the variation is caused by hybridization of native Isabela tortoises with about 40 descendants of tortoises from Floreana, a population thought to be extinct since the 1850s. [18] C. n. chathamensis (from Chatham Island) Chatham Island tortoise. Conservation status Endangered [19] Van Denburgh 1907 [20]
Captive Galapagos tortoises can live up to 177 years. [4] For example, a captive individual, Harriet, lived for at least 175 years. Spanish explorers, who discovered the islands in the 16th century, named them after the Spanish galápago, meaning "tortoise". [5] Galápagos tortoises are native to seven of the Galápagos Islands.
Chelonoidis niger vicina, commonly known as the Cerro Azul giant tortoise, Iguana Cove tortoise or the Isabela Island giant tortoise, is a subspecies of Galápagos tortoise endemic to Isabela Island in the Galápagos.
Van Denburgh, 1907 : Expedition of the California Academy of Sciences to the Galapagos Islands, 1905–1906. I. Preliminary descriptions of four new races of gigantic land tortoises from the Galapagos Islands. Proceedings of the California Academy of Sciences, ser. 4, vol. 1, p. 1–6
The Galapagos Conservancy has reportedly launched further expeditions to Fernandina Island searching for a male tortoise, rebuffing Galante’s attempts to collaborate again. [ 21 ] On May 25, 2021, officials announced that genetic tests had confirmed that the female tortoise found in 2019 is indeed a member of the Chelonoidis niger ...
Five views of a skull. In 2015, Chelonoidis niger donfaustoi was reclassified as a new subspecies on the basis of genetic and morphological data. [3] C. n. donfaustoi is the sister lineage to C. n. chathamensis on San Cristóbal, and is part of a clade that also includes C. n. hoodensis of Española and C. n. abingdoni of Pinta. [3]
The western Santa Cruz tortoise (Chelonoidis niger porteri) [1] is a subspecies of Galápagos tortoise endemic to Santa Cruz Island in the Galápagos.They are found only on the southwestern slopes of the island, with an estimated range of 141 sq. kilometers.
The Santiago Island giant tortoise (Chelonoidis niger darwini), also known commonly as the Santiago giant tortoise [3] and the James Island tortoise, is a subspecies of Galápagos tortoise in the family Testudinidae. The subspecies is endemic to Santiago Island (also known as James Island and San Salvador) in the Galápagos.