Chelonoidis sp - Galapagos Giant Tortoise Shell - The Object

First in our collection, is the Chelonoidis sp or Galapagos Giant Tortoise shell. It is made up of two parts: the shell and the skeleton of the tortoise. The top part of the shell is called the carapace, while the bottom part covering the stomach is the plastron. The shell, formed of bone and keratin belonged to a fully formed adult. Its weight is unknown, but an adult tortoise can weigh up to 200 kg. As tortoises hatch with their shell, it is normally one solid piece, however this one had been separated into two, either due to natural or artificial causes. The inside of the shell, as you can see below, is covered heavily in scratch marks and cuts, indicating an aggressive removal of the flesh - to discover why this is significant in relation to the theme of power, read on!

 

The opening image in the gallery above is the side view of the giant tortoise shell as it is currently displayed in the Grant Museum of Zoology. Following the arrow to the right, the second one is a picture of Darwin's Voyage of the Beagle, followed by a photo of Lonesome George. The final image depicts the underside of the carapace with the scratch marks, indicating the carving of the flesh. 

Chelonoidis sp (mounted in glass box) - catalogue number X449, part of the Grant Museum of Zoology collection

The dimensions of the object are as follows: 

Entire:  45cm x 57cm x 95cm
Mount: 65cm x 75cm x 110cm

Sources

Bassett, C.A.(2009). Galapagos at the Crossroads: Pirates, Biologists, Tourists, and Creationists. Washington: National Geographic Society

http://www.darwinfoundation.org, Chelonoidis sp.,  21/02/2016

geo.cornell.edu, Giant Tortoises, Accessed 21/02/2016 http://gmzcat.museums.ucl.ac.uk, Chelonoidis sp. X449,  21/02/2016

Grant, T.K., Estes, G.B. (2009) Darwin in Galápagos. Princeton and Oxford: Princeton University Press

Nicholls, H. (2012). The legacy of Lonesome George. Nature, Issue 487

Smith, N.J.H. (1974) Destructive Exploitation of the South American River Turtle. Yearbook of the Association of Pacific Coast Geographers. Vol. 36, pp. 85-10
 
www.revistacaos.com/impacto-historico-de-la-teoria-evolutiva.html, 21/03/2016
 
Viscardi, P. February 2016. Personal Communication
 
/www.washingtonpost.com/news/speaking-of-science/wp/2015/12/18/the-peculiar-history-behind-sciences-race-to-bring-extinct-tortoises-back-to-life/, 21/03/2016
 

Relation to Power in Society

Historically, a common function of the giant tortoise was capturing for its meat. Following the discovery of the Galapagos Islands in 1535, they became a regular stop-off for pirates and whalers to stock up on tortoise meat. Tortoise fat could also be refined into oil, and was used by the indigenous tribes of Ecuador and the Galapagos, to trade to missionaries. Already, we can see an arising power structure: though likely the indigenous peoples would have discovered turtle oil as a commodity just the same, the appearance of foreign missionaries, suddenly meant that a new group of people had to be reckoned with on their own land. 

The most famous association with the giant tortoise is perhaps Darwin, who in 1831 he undertook a voyage aboard the HMS Beagle that lasted almost a year. Darwin’s experiences on the Galapagos were of disproportionate importance to his key theories. The biological variability of the tortoises according to the island they came from undermined the theory of the stability of species. But it has to be kept in mind that what made his exploration possible to a large extent was imperialist expansion - demonstrated by names of islands, such as ‘South Seymour Island’ named after an English nobleman, ‘Darwin Island’, ‘Espanola’ or Ferdinanda’ as well as settlers Darwin interacted with (such as acting governor of the Galapagos, Nicholas Lawson). 

In the object's contemporary context, there are a few things to consider. Firstly, the Grant Museum that currently houses the tortoise shell has no records of how the object was acquired. Theories about some of th details can be extrapolated really safely - for example, the violent scratch marks on the bottom of the shell (as can be seen in the image gallery) suggest that the meat was carved out, therefore it is likely from a time period when tortoise meat was still sold, and the giant tortoise has not yet been declared endangered. This demonstrates the shifting of priorities and power relations - a function as simple as the administration of object acquisition, which today is routinely done, would not have been considered important at the time.

Secondly, there's the famous case of Lonesome George, the last of the Pinta Island tortoise, a subspecies of the Galapagos Giant Tortoise (Chelonoidis). Lonesome George died in 2012, making his subspecies extinct. Scientists attempted to harvest his DNA to continue his lineage with a different female, but ultimately failed. This poses the question: should we be able to meddle with nature? According to the Galapagos-based Darwin foundation, four subspecies of the Chelonoidis are now extinct, while three more await evaluation, but their existence is doubtful. Looking at the giant tortoise is a rare insight into the nature of power. Its extinction is largely the result  of the exploitation of the ecology of the Galapagos, and the subsequent attempt at restoring his DNA is an attempt at undoing the harm done by man-made circumstance.