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231225s2019 xx |||||o 00| ||eng c |
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|a 10.1111/cobi.13319
|2 doi
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|a pubmed25n0983.xml
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|a (NLM)30901116
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Quinzin, Maud C
|e verfasserin
|4 aut
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|a Genetically informed captive breeding of hybrids of an extinct species of Galapagos tortoise
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|c 2019
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 11.12.2019
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|a Date Revised 08.01.2020
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2019 Society for Conservation Biology.
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|a Hybridization poses a major challenge for species conservation because it threatens both genetic integrity and adaptive potential. Yet, hybridization can occasionally offer unprecedented opportunity for species recovery if the genome of an extinct taxon is present among living hybrids such that selective breeding could recapture it. We explored the design elements for establishing a captive-breeding program for Galapagos tortoises (Chelonoidis spp.) built around individuals with admixed ancestry involving an extinct species. The target individuals were hybrids between the extinct species from Floreana Island, C. niger, and an extant species, C. becki, which were recently found in the endemic range of C. becki, from Wolf Volcano on Isabela Island. We combined genotypic data from 35 tortoises with high ancestry from C. niger with forward-in-time simulations to explore captive breeding strategies that maximized overall genetic diversity and ancestry from C. niger while accommodating resource constraints, species biology, and the urgency to return tortoises to Floreana Island for facilitating ecosystem restoration. Overall genetic diversity was maximized when in the simulation tortoises were organized in relatively small breeding groups. Substantial amounts of the C. niger genome were captured despite limited resources available for selectively breeding tortoises in captivity. Genetic diversity was maximized when captive-bred offspring were released to the wild rather than being used as additional breeders. Our results provide genetic-based and practical guidance on the inclusion of hybrids with genomic representation from extinct taxa into species restoration programs and informs the ongoing debate on the value of hybrids in biodiversity conservation
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Research Support, U.S. Gov't, Non-P.H.S.
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|a Chelonoidis niger
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|a Chlenoidis niger
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|a Floreana Island
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|a Isla Floreana
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|a ex situ population management
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|a forward-in-time simulations
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|a genetic ancestry
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|a genetic relatedness
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|a hybrid conservation value
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|a linaje genético
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|a manejo poblacional ex situ
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|a muestras de museos
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|a museum samples
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|a relación genética
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|a simulación futura
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|a valor de conservación de híbridos
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|a 前进式模拟
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|a 博物馆标本
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|a 弗洛里安娜岛
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|a 杂种保护价值
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|a 迁地种群管理
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|a 遗传相关性
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|a 遗传血统
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|a Sandoval-Castillo, Jonathan
|e verfasserin
|4 aut
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|a Miller, Joshua M
|e verfasserin
|4 aut
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|a Beheregaray, Luciano B
|e verfasserin
|4 aut
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|a Russello, Michael A
|e verfasserin
|4 aut
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|a Hunter, Elizabeth A
|e verfasserin
|4 aut
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|a Gibbs, James P
|e verfasserin
|4 aut
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|a Tapia, Washington
|e verfasserin
|4 aut
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|a Villalva, Freddy
|e verfasserin
|4 aut
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|a Caccone, Adalgisa
|e verfasserin
|4 aut
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|i Enthalten in
|t Conservation biology : the journal of the Society for Conservation Biology
|d 1989
|g 33(2019), 6 vom: 02. Dez., Seite 1404-1414
|w (DE-627)NLM098176803
|x 1523-1739
|7 nnns
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|g volume:33
|g year:2019
|g number:6
|g day:02
|g month:12
|g pages:1404-1414
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|u http://dx.doi.org/10.1111/cobi.13319
|3 Volltext
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|d 33
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|e 6
|b 02
|c 12
|h 1404-1414
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