Genetic analysis of a successful repatriation programme: giant Galápagos tortoises
As natural populations of endangered species dwindle to precarious levels, remaining members are sometimes brought into captivity, allowed to breed and their offspring returned to the natural habitat. One goal of such repatriation programmes is to retain as much of the genetic variation of the speci...
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| Veröffentlicht in: | Proceedings of the Royal Society. B, Biological sciences Biological sciences, 2004-02, Vol.271 (1537), p.341-345 |
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| container_title | Proceedings of the Royal Society. B, Biological sciences |
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| creator | Milinkovitch, Michel C. Monteyne, Daniel Gibbs, James P. Fritts, Thomas H. Tapia, Washington Snell, Howard L. Tiedemann, Ralph Caccone, Adalgisa Powell, Jeffrey R. |
| description | As natural populations of endangered species dwindle to precarious levels, remaining members are sometimes brought into captivity, allowed to breed and their offspring returned to the natural habitat. One goal of such repatriation programmes is to retain as much of the genetic variation of the species as possible. A taxon of giant Galápagos tortoises on the island of Española has been the subject of a captive breeding-repatriation programme for 33 years. Core breeders, consisting of 12 females and three males, have produced more than 1200 offspring that have been released on Española where in situ reproduction has recently been observed. Using microsatellite DNA markers, we have determined the maternity and paternity of 132 repatriated offspring. Contributions of the breeders are highly skewed. This has led to a further loss of genetic variation that is detrimental to the long-term survival of the population. Modifications to the breeding programme could alleviate this problem. |
| doi_str_mv | 10.1098/rspb.2003.2607 |
| format | Article |
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One goal of such repatriation programmes is to retain as much of the genetic variation of the species as possible. A taxon of giant Galápagos tortoises on the island of Española has been the subject of a captive breeding-repatriation programme for 33 years. Core breeders, consisting of 12 females and three males, have produced more than 1200 offspring that have been released on Española where in situ reproduction has recently been observed. Using microsatellite DNA markers, we have determined the maternity and paternity of 132 repatriated offspring. Contributions of the breeders are highly skewed. This has led to a further loss of genetic variation that is detrimental to the long-term survival of the population. 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Modifications to the breeding programme could alleviate this problem.</description><subject>Alleles</subject><subject>Animals</subject><subject>Breeding</subject><subject>Breeding Programme</subject><subject>Conservation Genetics</subject><subject>Conservation of Natural Resources</subject><subject>DNA</subject><subject>DNA Primers</subject><subject>Ecuador</subject><subject>Española</subject><subject>Evolutionary genetics</subject><subject>Genetic Carrier Screening</subject><subject>Genetic loci</subject><subject>Genetic Variation</subject><subject>Geochelone</subject><subject>Geochelone nigra</subject><subject>Giant Galápagos Tortoise</subject><subject>Medical genetics</subject><subject>Microsatellite Repeats - genetics</subject><subject>Microsatellites</subject><subject>Population genetics</subject><subject>Repatriation</subject><subject>Reproduction - physiology</subject><subject>Tortoises</subject><subject>Turtles - genetics</subject><subject>Turtles - physiology</subject><issn>0962-8452</issn><issn>1471-2954</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2004</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqNks2O0zAUhSMEYsrAlhVCWbFL8U9sxywYwQwUxAgQw59mYzmO07qkcbCdgfI2PAsvhtNUhQoxsLEX9_O55_rcJLkNwRQCXtx3viunCAA8RRSwK8kE5gxmiJP8ajIBnKKsyAk6SG54vwQAcFKQ68kBJBBAyuEkOZvpVgejUtnKZu2NT22dytT3Smnv675Jne5kcEYGY9u0c3bu5GqlH6RzI9uQzmTz43sn59anwbpgjdf-ZnKtlo3Xt7b3YfLu6ZO3x8-y01ez58ePTjPFCAtZXSlc8RrFk-iSUskKRmpZoCIvZQ0qVlGGKMWQw0pJDlhVlZAyrgtYlkQpfJg8HHW7vlzpSuk2ONmIzpmVdGthpRH7ldYsxNxeiGH0-FtR4N5WwNnPvfZBrIxXumlkq23vBYMFiZ7wP0HIGUA55v8BIopiLBGcjqBy1nun651tCMSQrBiSFUOyAo1e7_4-7C98G2UE8Ag4u46_bpXRYS2WtncxWf93WX_Zqzdnrx9DzsEFYtBAgpkABYaAIpIz8c10G7kBEBEQxvteiw223-bPrnfGrksft2Y3Sw5zRIphlGwsGx_0111Zuk-CMsyIeF_k4sU5PTn_ePJBvIz80cgvzHzxxTgt9qbZNFe2DXENNj43DnEORdzvuC9VHRXgpQp23Tlf7j3GPwEL5Bnt</recordid><startdate>20040222</startdate><enddate>20040222</enddate><creator>Milinkovitch, Michel C.</creator><creator>Monteyne, Daniel</creator><creator>Gibbs, James P.</creator><creator>Fritts, Thomas H.</creator><creator>Tapia, Washington</creator><creator>Snell, Howard L.</creator><creator>Tiedemann, Ralph</creator><creator>Caccone, Adalgisa</creator><creator>Powell, Jeffrey R.</creator><general>The Royal Society</general><scope>BSCLL</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SN</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>P64</scope><scope>RC3</scope><scope>7ST</scope><scope>7U6</scope><scope>7X8</scope><scope>5PM</scope></search><sort><creationdate>20040222</creationdate><title>Genetic analysis of a successful repatriation programme: giant Galápagos tortoises</title><author>Milinkovitch, Michel C. ; 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| fulltext | fulltext |
| identifier | ISSN: 0962-8452 |
| ispartof | Proceedings of the Royal Society. B, Biological sciences, 2004-02, Vol.271 (1537), p.341-345 |
| issn | 0962-8452 1471-2954 |
| language | eng |
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| source | MEDLINE; Jstor Complete Legacy; PubMed Central |
| subjects | Alleles Animals Breeding Breeding Programme Conservation Genetics Conservation of Natural Resources DNA DNA Primers Ecuador Española Evolutionary genetics Genetic Carrier Screening Genetic loci Genetic Variation Geochelone Geochelone nigra Giant Galápagos Tortoise Medical genetics Microsatellite Repeats - genetics Microsatellites Population genetics Repatriation Reproduction - physiology Tortoises Turtles - genetics Turtles - physiology |
| title | Genetic analysis of a successful repatriation programme: giant Galápagos tortoises |
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