Evolutionary genetics of the endemic Schizorathicine (Cypriniformes: Cyprinidae) fishes of Lake Rara, Nepal

Dimmick, Walter W.; Edds, David R.

doi:10.1016/s0305-1978(02)00030-3

Cited by 21 publications

(29 citation statements)

References 7 publications

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“…S2). Dimmick and Edds (2002) found that the mitochondrial DNA (mtDNA) sequence data was unable to identify the morphological distinctive species of S. richardsonii and S. progastus. Yang et al (2012) reported that it is common, mitochondrial sequence data were unable to distinguish some of the morphological distinctive species in Schizothorax.…”

Section: Discussionsupporting

confidence: 90%

“…The finding that some populations of S. plagiostomus and S. esocinus cluster together in all the three trees with both 16S and Cytb genes may indicate hybridization events or represent ecophenotypic variants. Similar studies were reported by Dimmick and Edds (2002) for S. raraensis and S. Macrophthalmus. The poor correlation between morphology and mtDNA of Schizothoracines at the genus or subgenus level may be due to incomplete lineage sorting (He and Chen 2006).…”

Section: Discussionmentioning

confidence: 99%

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Mitochondrial DNA variability to explore the relationship complexity of Schizothoracine (Teleostei: Cyprinidae)

et al. 2014

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Despite numerous studies on the taxonomy of a highly complex group of schizothoracine (snow trouts), with over five recognized species from Kashmir, India (Schizothorax niger, Schizothorax esocinus, Schizothorax plagiostomus, Schizothorax curvifrons and Schizothorax labiatus) based on traditional morphological data, the relationships between these species is poorly understood and the taxonomic validity is still under debate. To resolve the evolutionary relationships among these species, we sequenced mitochondrial fragments, including 16Sr RNA, Cytb and the D-loop. Separate analyses of 16S and Cytb showed intermixing of the species and 16S was found more conserved than Cytb. The D-loop was found highly variable and showed length variation between and within species. Length variation was observed in di-nucleotide (TA)n microsatellite repeats with a variable number of repeat units (n = 7-14) that did not show heteroplasmy. Central conserved sequence blocks (CSBs) in D-loop sequences were found comparable to other vertebrate species. All phylogenetic reconstructions recovered the focal taxa as a monophyletic clade within the schizothoracines. Analyses with combined mitochondrial data sets showed close genetic relationships of all the five species. In addition to a close relationship between S. niger and S. curvifrons, two distinct groupings of S. ecoscinus and S. plagiostomus were supported by all the analyses. This study gives an insight into molecular phylogeny of the species and improves our understanding of historical and taxonomic relationships derived from morphological and ecological studies.

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Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 99%

Mitochondrial DNA variability to explore the relationship complexity of Schizothoracine (Teleostei: Cyprinidae)

et al. 2014

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“…The nodal numbers are mean divergence times and Bayesian posterior probabilities. The numbers after each sequence refer to the localities listed in Table S1 in, for example, S. plagiostomus, S. richardsonii and S. curvifrons by Dimmick and Edds (2002), and S. meridionalis and S. rotundimaxillaris by He and Chen (2006). It was common that sequence data were unable to distinguish some of the morphological distinctive species in Schizothorax, as well as between some other schizothoracine genera, for example cyt b sequence data cannot discriminate between the specimens of Gymnocypris przewalskii and Schizopygopsis pylzovi (Qi et al 2006).…”

Section: Phylogeny and Taxonomic Implicationsmentioning

confidence: 99%

A re-examination of the molecular phylogeny and biogeography of the genus Schizothorax (Teleostei: Cyprinidae) through enhanced sampling, with emphasis on the species in the Yunnan-Guizhou Plateau, China

Yang

Chen

2012

Journal of Zoological Systematics and Evolutionary Research

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The mitochondrial DNA cytochrome b sequences of 36 Schizothorax species from 51 localities in the Yunnan–Guizhou Plateau (YGP) and its adjacent areas were analysed. Maximum parsimony, Maximum likelihood and Bayesian phylogenetic analyses were performed to examine the relationships of Schizothorax species. A hypothesis of the phylogenetic relationships of the species is given. A relaxed molecular clock based on Bayesian evolutionary analysis was used to tentatively calculate the divergence times of Schizothorax. Samples from the YGP were tentatively grouped into three geographically distributed clades: the Tsangpo‐Irrawaddy, the Mekong‐Salween and the Trans‐Jinsha River (including Jinsha, Red, Nanpan and Beipan Rivers). Calibration of the molecular clock revealed that two geological periods, the late Miocene about 10 million years before present (Myr BP) and the Pliocene (4.0 Myr BP), were important times in the vicariant speciation of Schizothorax. The phylogenetic history of the species is congruent with events caused by the uplift of the Tibetan Plateau and the YGP. The divergence of Schizothorax species in YGP began in the Pliocene. Our phylogenetic trees did not support the hypothesis that the paleo Jinsha River was drained through the Yangtze River‐Jianchuan Lake‐Erhai Lake to the Red River. Schizothorax in the Beipan River were derived from the Jinsha River.

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“…Joel T. Heinen 1 *, Nabin Baral 2 , Prakash K. Paudel 3 and Jay P. Sah 4 1 Department of Earth and Environment, Florida International University, Miami, FL, USA…”

Section: Author Detailsmentioning

confidence: 99%

“…100 m above mean sea level (asl) to the world's highest peaks. For those reasons, it boasts very high species diversity, many centers of adaptive radiation and high degrees of endemism and animals [2][3][4][5][6]. Nepal is recognized as being very important for biodiversity within the Asia-Pacific region [7,8] and it boasts several Global 200 Ecoregions, two endemic bird areas, and it's a global biodiversity hotspot (e.g.…”

Section: Introductionmentioning

confidence: 99%

On the Road to Sustainability? A Review of a Half-Century of Biodiversity Conservation Successes in Nepal and Some Thoughts on Future Needs

Heinen¹,

Baral²,

Paudel³

et al. 2020

Protected Areas, National Parks and Sustainable Future

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We review the history, over the past half-century, of biodiversity conservation legislation and programs in Nepal. We especially consider how they have evolved in light of some earlier concerns resulting from, for example, the strict "fines and fences" conservation approaches first implemented in the 1970s, to pressing issues that emerged over time such as park-people and wildlife-human conflicts, poaching and illegal wildlife trade. We also consider how the implementation of international conservation agreements and demographic and political changes have affected conservation programs in Nepal. We finish by discussing conservation in the context of sustainable development and conclude with some thoughts on future research and managerial needs in a rapidly-changing world.

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Evolutionary genetics of the endemic Schizorathicine (Cypriniformes: Cyprinidae) fishes of Lake Rara, Nepal

Cited by 21 publications

References 7 publications

Mitochondrial DNA variability to explore the relationship complexity of Schizothoracine (Teleostei: Cyprinidae)

Mitochondrial DNA variability to explore the relationship complexity of Schizothoracine (Teleostei: Cyprinidae)

A re-examination of the molecular phylogeny and biogeography of the genus Schizothorax (Teleostei: Cyprinidae) through enhanced sampling, with emphasis on the species in the Yunnan-Guizhou Plateau, China

On the Road to Sustainability? A Review of a Half-Century of Biodiversity Conservation Successes in Nepal and Some Thoughts on Future Needs

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