From cryptic species to biodiversity conservation in China: Status and prospects

Xu, Wei; Che, Jing

doi:10.1360/n052018-00229

Cited by 5 publications

(3 citation statements)

References 31 publications

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“…The assessment of cryptic species in China has not been thoroughly evaluated, particularly in biodiversity evaluations. Furthermore, the mechanisms of morphological conservatism in cryptic species requires further investigation [ 74 ].…”

Section: Discussionmentioning

confidence: 99%

Phylogenetic relationships and genetic differentiation of two Salamandrella species as revealed via COI gene from Northeastern China

Liu,

Duan,

Wang

et al. 2024

PLoS ONE

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Due to traditional classification methods’ limitations, some cryptic species remain undiscovered. To better explore the existence of the Schrenck salamander (Salamandrella tridactyla, a cryptic species of Siberian salamander S. keyserlingii) in China, we conducted a molecular phylogenetic analysis to confirm the taxonomic relationship among Salamandrella species and investigate genetic variation. We used complete sequences of the mitochondrial COI gene from 65 specimens collected across a wide range in Northeastern China. Thirty-five haplotypes were obtained from six populations. They showed medium-high haplotype diversity (Hd) and low nucleotide polymorphism (π). The phylogenetic tree and haplotype network analysis revealed that populations from Greater Khingan Ridge (Huma: HM) and Lesser Khingan Ridge (Tieli: TL) belong to S. keyserlingii, while populations from Changbai Mountain (Shangzhi-zhuziying: SZ, Shangzhi-cuijia: SC, Hailin: HL, and Baishan: BS) belong to S. tridactyla. This indicates the monophyly of Salamandrella and each of the two species. There was a substantial level of genetic differentiation between different species and within populations of the same species. This differentiation was significantly related to geographical distance. At last, the mismatch distribution and neutrality analyses indicated that the TL populations have undergone expansion of history. The study supplements the distributional range of Schrenck salamander. And it provides a theoretical basis for species conservation of Salamandrella species.

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Section: Discussionmentioning

confidence: 99%

Phylogenetic relationships and genetic differentiation of two Salamandrella species as revealed via COI gene from Northeastern China

Liu,

Duan,

Wang

et al. 2024

PLoS ONE

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“…acutifoliolata Li, Gao & Chen, 2010), suggesting recent divergence, with insufficient time to accumulate substantial morphological differentiation ( Struck et al, 2018 ; Fišer, Robinson & Malard, 2018 ). In fact, it is generally assumed that, in the early stages of speciation, natural selection primarily acts on traits that are closely associated with survival, such as physiological, immunological, or behavioural traits, rather than on morphology ( Struck et al, 2018 ), particularly in extreme environments ( Xu & Che, 2019 ).…”

Section: Discussionmentioning

confidence: 99%

Cryptic diversity in the subgenus Oxyphortica (Diptera, Drosophilidae, Stegana)

Wang

Zhang

et al. 2021

PeerJ

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Phylogenetic relationships of the subgenus Oxyphortica were reconstructed based on two mitochondrial genes (COI and ND2). The results revealed the paraphyly of Oxyphortica and supported high levels of cryptic diversity within this subgenus. By integrating morphological characteristics and molecular evidence, we identified 17 new species as members of Oxyphortica: S. (O.) amphigya sp. nov., S. (O.) armillata sp. nov., S. (O.) ashima sp. nov., S. (O.) bawo sp. nov., S. (O.) crypta sp. nov., S. (O.) gelea sp. nov., S. (O.) hengduanmontana sp. nov., S. (O.) jinmingi sp. nov., S. (O.) mengbalanaxi sp. nov., S. (O.) mouig sp. nov., S. (O.) setipes sp. nov., S. (O.) shangrila sp. nov., S. (O.) tsauri sp. nov., S. (O.) valleculata sp. nov., S. (O.) wanhei sp. nov., S. (O.) yangjin sp. nov. and S. (O.) hypophaia sp. nov. To test the early morphological identifications and confirm the species boundaries, different species delimitation methods, including Automatic Barcode Gap Discovery (ABGD) and Bayesian Phylogenetics and Phylogeography (BP&P), were used, together with traditional distance. All species boundaries were clearly defined. As Oxyphortica species are mainly distributed across Southwest China (e.g., 20 spp. from the Hengduan Mountains), the complex climate and topographic landforms of the area may be responsible for the high levels of species diversity and endemism.

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“…Generally, with limited economic resources, population genetics are first studied for narrowly distributed, less mobile species, which may be more vulnerable to extinction threats (Purvis et al, 2000). The conservativeness of amphibians regarding their morphological characters and the existence of cryptic species pose a great challenge for biodiversity assessment (Xu & Che, 2019). This is because the presence of cryptic species may cause underestimation in the assessment of biodiversity and introduce the potential for error in making conservation decisions (Bickford et al, 2007; Rowley et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Large mountains make small barriers: Species composition and spatial dynamics history of the Odorrana schmackeri complex in the karst area of Guizhou, China

Jiang

Yan

Luo

et al. 2022

Diversity and Distributions

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Aim Species delimitation is the basis for identifying diversity, and the genetic structure and demographic history of species can shed light on the effects of geological and historical climate change, thus allowing us to develop appropriate conservation and management strategies. In this study, we aimed to clarify the species composition and geographic distribution of the Odorrana schmackeri complex in the karst areas of Guizhou, explore the influence of geological and climatic events on its evolutionary and demographic history, predict the impact of future climate on the distribution area, and investigate the ecological niche differentiation of the complex. Location Karst areas of Guizhou Province, China. Methods Using three mitochondrial (12S, 16S, and ND2) and four nuclear gene (BDNF, RAG1, RAG2, and Tyr) sequences as genetic markers, Bayesian inference (BI) was used to infer phylogenetic relationships and BEAST was used to assess divergence times. We assessed and estimated demographic histories using neutrality tests, mismatch distributions, and Bayesian skyline plots (BSPs). Using a species distribution prediction model, past and future suitable ranges were assessed. Niche equivalency and similarity of the three species of the complex were examined using the R package “ecospat.” Results The O. schmackeri complex in Guizhou Province consists of three species: O. kweichowensis, O. huanggangensis, and O. hejiangensis. Demographic analyses indicated that population expansion of O. kweichowensis and O. huanggangensis occurred during the late Pleistocene, coinciding with the expansion of suitable habitat during the last ice age and the mid‐Holocene. Our projections suggest that potentially suitable habitat for all three species will contract under all future climate scenarios. The ecological niche similarity test showed significant climatic ecological niche differentiation between O. huanggangensis and O. kweichowensis, and between O. kweichowensis and O. hejiangensis. Main conclusions The Guizhou distribution of the O. schmackeri complex comprises three species, most of whose recent common ancestors diverged at the early Miocene (ca. 14.30 Ma) and split at the late Miocene (ca. 8–9 Ma). The Miaoling Mountains were not a geographical barrier to the dispersal of O. kweichowensis and O. huanggangensis, and the Dalou Mountains, Foding‐Wuling‐Leigong‐Yueliang Mountains were geographical distribution boundaries in the formation of the current distribution of the three species in Guizhou Province. No population expansion was detected within O. hejiangensis. Population expansion in the late Pleistocene for O. kweichowensis and O. huanggangensis was less affected by the glacial period, and was related to the presence of refugia. Considering future climate change, the focus should be on suitable habitats, mainly in nature reserves. In conclusion, this study highlights the importance of the use of genetic markers for the identification of species in the complex, the small geographical barrier of the Miaoling Mounta...

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From cryptic species to biodiversity conservation in China: Status and prospects

Cited by 5 publications

References 31 publications

Phylogenetic relationships and genetic differentiation of two Salamandrella species as revealed via COI gene from Northeastern China

Phylogenetic relationships and genetic differentiation of two Salamandrella species as revealed via COI gene from Northeastern China

Cryptic diversity in the subgenus Oxyphortica (Diptera, Drosophilidae, Stegana)

Large mountains make small barriers: Species composition and spatial dynamics history of the Odorrana schmackeri complex in the karst area of Guizhou, China

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