Reintroducing antelopes into arid areas: lessons learnt from the oryx in Saudi Arabia

Mésochina, Pascal; Bedin, Eric; Ostrowski, Stéphane

doi:10.1016/s1631-0691(03)00053-2

Cited by 22 publications

(20 citation statements)

References 29 publications

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“…Lande (1988) argued that demographic factors are paramount in driving extinction, a view supported by some recent reports of substantial demographic recovery of genetically impoverished populations (e.g. the Oryx, Oryx leucoryx; Mésochina et al (2003); the elephant seal, Mirounga angustirostrus; Hoelzel et al, 1993), or others where population reduction was not clearly associated with a decrease in genetic variability (the Mauritius kestrel, Falco punctatus; Groombridge et al, 2000). However, Saccheri et al (1998) found that extinction risk in butterflies was better predicted by genetic than ecological factors.…”

Section: Discussionmentioning

confidence: 96%

Beyond the point of no return? A comparison of genetic diversity in captive and wild populations of two nearly extinct species of Goodeid fish reveals that one is inbred in the wild

2007

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The relative importance of genetic and non-genetic factors in extinction liability has been extensively debated. Here, we examine the levels of genetic variability at 13 (seven informative) loci in wild and captive populations of two endangered species of Mexican Goodeid fish, Ameca splendens and Zoogoneticus tequila. Allelic diversity was higher in the wild populations, and F IS lower. Values of y ( ¼ 4Nem) were estimated using a coalescent approach. These implied that the effective population size of all captive populations of A. splendens were smaller than that of the wild population; qualitatively similar results were obtained using an analytical method based on within-population gene identity disequilibrium. However, the wild population of Z. tequila did not show a significantly greater estimate of y. We used the Beaumont approach to infer population declines, and found that both species showed clear evidence of a decline in effective population size, although this was stronger and probably occurred over a longer period of time in Z. tequila than in A. splendens. The decline in Z. tequila probably occurred before captive populations were established. We discuss implications for the conservation of critically endangered populations.

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Section: Discussionmentioning

confidence: 96%

Beyond the point of no return? A comparison of genetic diversity in captive and wild populations of two nearly extinct species of Goodeid fish reveals that one is inbred in the wild

2007

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“…However, massive hunting and scarcity of habitat caused extirpation of this antelope from the wild in early 1970s (Henderson, 1974). The foresighted determination and sincere efforts of certain groups saved the last few animals from extinction by nurturing them in captivity and then successfully reintroducing them into the protected areas (Mesochina et al, 2003;Spalton et al, 1999;Ostrowski et al, 1998). Although the savior of Arabian oryx in captivity had become an international symbol of conservation success (Dixon and Jones, 1988) some untoward events in Oman indicated that the reintroduction programs might be prone to partial or total collapse despite their initial success .…”

Section: Introductionmentioning

confidence: 99%

Measuring the genetic diversity of Arabian Oryx using microsatellite markers: implication for captive breeding

et al. 2010

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Arabian oryx (Oryx leucoryx) is an endangered antelope that is being protected by captive breeding programs. However, the long term success of these programs mainly depends on the prudent use of molecular information for conservation management. We have used an array of seven microsatellite loci to examine the molecular diversity in a representative population of 24 captive-bred and reintroduced Arabian oryx. The locus-wise mean observed heterozygosity (0.601) was found to be comparatively higher than the mean expected heterozygosity (0.565). The specimen-wise observed heterozygosity ranged from 0.143 to 1.00 with an average of 0.60 whereas the mean d 2 varied from 0.57 to 1023.428 with an average value of 223.357. The results of Shannon information index (I = 0.898) also indicated a high level of within population genetic diversity. The average gene flow was 0.298, ranging between 0.204 and 0.424 for different loci. In conclusion, the information about the extent of heterozygosity, allelic diversity and inbreeding/ outbreeding depression using microsatellite markers could be of potential relevance for the management of captive breeding programs for the conservation of Arabian oryx.

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“…Mesochina et al (2003) have built a captive Oryx population recognized as the most polymorphic of all captive herds, suggesting that no recent management-related bottleneck has occurred. Genetic analysis has suggested, however, that as much as half of the neutral genetic variation present in the pre-extinction population of the Arabian oryx may be absent from contemporary populations (Marshall et al, 1999).…”

Section: Introductionmentioning

confidence: 99%

DNA barcoding of Oryx leucoryx using the mitochondrial cytochrome C oxidase gene

Elmeer¹,

Almalki²,

Mohran³

et al. 2012

Genet. Mol. Res.

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ABSTRACT. The massive destruction and deterioration of the habitat of Oryx leucoryx and illegal hunting have decimated Oryx populations significantly, and now these animals are almost extinct in the wild. Molecular analyses can significantly contribute to captive breeding and reintroduction strategies for the conservation of this endangered animal. A representative 32 identical sequences used for species identification through BOLD and GenBank/NCBI showed maximum homology 96.06% with O. dammah, which is a species of Oryx from Northern Africa, the next closest species 94.33% was O. gazella, the African antelope. DNA barcode sequences of the mitochondrial cytochrome C oxidase (COI) gene were determined for O. leucoryx; identification through BOLD could only recognize the genus correctly, whereas the species could not be identified. This was due to a lack of sequence data for O. leucoryx on BOLD. Similarly, BLAST analysis of the NCBI data base also revealed no COI sequence data for the genus Oryx.

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Reintroducing antelopes into arid areas: lessons learnt from the oryx in Saudi Arabia

Cited by 22 publications

References 29 publications

Beyond the point of no return? A comparison of genetic diversity in captive and wild populations of two nearly extinct species of Goodeid fish reveals that one is inbred in the wild

Beyond the point of no return? A comparison of genetic diversity in captive and wild populations of two nearly extinct species of Goodeid fish reveals that one is inbred in the wild

Measuring the genetic diversity of Arabian Oryx using microsatellite markers: implication for captive breeding

DNA barcoding of Oryx leucoryx using the mitochondrial cytochrome C oxidase gene

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