Insular gazelles of the circum-Arabian seas: origin, distribution, dwarfism and taxonomy

Chiozzi, Giorgio; Marchi, Giuseppe De; Fasola, Mauro; Ibrahim, Kamal M.; Bardelli, Giorgio; Hagos, Futsum; Rocca, F.; Masseti, Marco

doi:10.1007/s42991-021-00186-3

Cited by 1 publication

(3 citation statements)

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“…There was little genetic differentiation among the sampling locations (Table 2 ), which is consistent with the results from PC1 and PC2 in the PCA. The observed low genetic differentiation may be because these sampling locations had the same recent origin and have not been isolated for long enough to reach high differentiation [ 27 ], or because there is some genetic communication between them [ 55 ]. The locations with the most obvious differentiation from each other were DJ and GZ, which were also the furthest apart of all the sampling locations geographically (Fig.…”

Section: Discussionmentioning

confidence: 99%

“…The differentiation among C. taliensis samples from different sky islands was low. This suggests one of two scenarios: the individuals in these sky islands have the same recent origin [ 27 ], or that there is some genetic communication between them [ 55 ]. BayesAss analysis showed that there was no obvious recent gene flow among sampling locations, so we believe that the former speculation is more likely.…”

Section: Discussionmentioning

confidence: 99%

“…Sometimes sky island species show low genetic differentiation between populations, which may be because they share the same recent origin and have not yet had time to develop pronounced structural differentiation between populations. For example, the nine island populations of gazelles (Bovidae: Antilopinae) studied by Chiozzi et al, showed low genetic differentiation from their mainland relatives after gene flow caused by spontaneous colonization had been excluded, indicating that they were of recent origin [ 27 ]. Because species responses to climatic changes are influenced by interacting factors such as ecology, landscape topography, and latitude and longitude, the pattern and tempo of diversification will vary [ 28 ].…”

Section: Introductionmentioning

confidence: 99%

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Conservation genetics and potential geographic distribution modeling of Corybas taliensis, a small ‘sky Island’ orchid species in China

Liu,

Wang,

Yang

et al. 2024

BMC Plant Biol

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Background Corybas taliensis is an endemic species of sky islands in China. Its habitat is fragile and unstable, and it is likely that the species is threatened. However, it is difficult to determine the conservation priority or unit without knowing the genetic background and the overall distribution of this species. In this study, we used double digest restriction-site associated DNA-sequencing (ddRAD-seq) to investigate the conservation genomics of C. taliensis. At the same time, we modeled the extent of suitable habitat for C. taliensis in present and future (2030 and 2090) habitat using the maximum-entropy (MaxEnt) model. Results The results suggested that the related C. fanjingshanensis belongs to C. taliensis and should not be considered a separate species. All the sampling locations were divided into three genetic groups: the Sichuan & Guizhou population (SG population), the Hengduan Mountains population (HD population) and Himalayan population (HM population), and we found that there was complex gene flow between the sampling locations of HD population. MT was distinct genetically from the other sampling locations due to the unique environment in Motuo. The genetic diversity (π, He) of C. taliensis was relatively high, but its contemporary effective population size (Ne) was small. C. taliensis might be currently affected by inbreeding depression, although its large population density may be able to reduce the effect of this. The predicted areas of suitable habitat currently found in higher mountains will not change significantly in the future, and these suitable habitats are predicted to spread to other higher mountains under future climate change. However, suitable habitat in relatively low altitude areas may disappear in the future. This suggests that C. taliensis will be caught in a ‘summit trap’ in low altitude areas, however, in contrast, the high altitude of the Himalaya and the Hengduan Mountains are predicted to act as ‘biological refuges’ for C. taliensis in the future. Conclusions These results not only provide a new understanding of the genetic background and potential resource distribution of C. taliensis, but also lay the foundation for its conservation and management.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%