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Molecular phylogeny and biogeography of percocypris (Cyprinidae, Teleostei).

Wang M, Yang JX, Chen XY - PLoS ONE (2013)

Bottom Line: The results of Maximum Likelihood and Bayesian Inference analyses show that Percocypris is a strongly supported monophyletic group and that it is the sister group of Schizothorax.This study suggests that vicariance (due to the uplift of the Tibetan Plateau modifying the large-scale morphologies of drainage basins in the Southeastern Tibetan Plateau) has played an important role in the speciation of the genus.Furthermore, external morphological characters (such as the length of the fins) and an internal trait (the position of pterygiophore) appear to be correlated with different habitats in rivers and the lake.

View Article: PubMed Central - PubMed

Affiliation: State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China.

ABSTRACT
Fierce predatory freshwater fishes, the species of Percocypris (Cyprinidae, Teleostei) inhabit large rivers or lakes, and have a specific distribution pattern. Only a single species or subspecies occurs in each large-scale drainage basin of the Southeastern Tibetan Plateau. In this study, the molecular phylogenetic relationships for all but one of the described subspecies/species of Percocypris were investigated based on three mitochondrial genes (16S; COI; Cyt b) and one nuclear marker (Rag2). The results of Maximum Likelihood and Bayesian Inference analyses show that Percocypris is a strongly supported monophyletic group and that it is the sister group of Schizothorax. Combined with analyses of morphological characters, our results suggest that Percocypris needs to be reclassified, and we propose that six species be recognized, with corresponding distributions in five main drainages (including one lake). In addition, based on the results of the estimation of divergence times and ancestral drainages, we hypothesize that Percocypris likely originated in the early Miocene from a paleo-connected drainage system containing the contemporary main drainages of the Southeastern Tibetan Plateau. This study suggests that vicariance (due to the uplift of the Tibetan Plateau modifying the large-scale morphologies of drainage basins in the Southeastern Tibetan Plateau) has played an important role in the speciation of the genus. Furthermore, external morphological characters (such as the length of the fins) and an internal trait (the position of pterygiophore) appear to be correlated with different habitats in rivers and the lake.

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The topology generated by the partitioned Bayesian analysis inferred from the combined data set.The nodal numbers or symbol are Bayesian posterior probability and ML bootstrap values as node supports. The asterisk (*) indicates posterior probability ≧0.95 and ML bootstrap values ≧70%. JS, NP, LC, NJ and FX in the name of sample (e.g. m12_JS) stand for Jishan River, Nanpan River, Lancang River, Nujiang River and Fuxian Lake, respectively.
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pone-0061827-g003: The topology generated by the partitioned Bayesian analysis inferred from the combined data set.The nodal numbers or symbol are Bayesian posterior probability and ML bootstrap values as node supports. The asterisk (*) indicates posterior probability ≧0.95 and ML bootstrap values ≧70%. JS, NP, LC, NJ and FX in the name of sample (e.g. m12_JS) stand for Jishan River, Nanpan River, Lancang River, Nujiang River and Fuxian Lake, respectively.

Mentions: We used BPA method [59] to estimate the ancestral distribution area and investigate the evolutionary history of Percocypris. Based on the present-day drainage distributions of Percocypris, five units (Upper Yangtze River, A; Upper Pearl River, B; Fuxian Lake, C; Mekong River, D; and Salween River, E) were defined. The optimized phylogeny (derived from Figure 3) was converted into drainage cladogram. Data matrix to the primary BPA was prepared from the cladogram.


Molecular phylogeny and biogeography of percocypris (Cyprinidae, Teleostei).

Wang M, Yang JX, Chen XY - PLoS ONE (2013)

The topology generated by the partitioned Bayesian analysis inferred from the combined data set.The nodal numbers or symbol are Bayesian posterior probability and ML bootstrap values as node supports. The asterisk (*) indicates posterior probability ≧0.95 and ML bootstrap values ≧70%. JS, NP, LC, NJ and FX in the name of sample (e.g. m12_JS) stand for Jishan River, Nanpan River, Lancang River, Nujiang River and Fuxian Lake, respectively.
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC3672144&req=5

pone-0061827-g003: The topology generated by the partitioned Bayesian analysis inferred from the combined data set.The nodal numbers or symbol are Bayesian posterior probability and ML bootstrap values as node supports. The asterisk (*) indicates posterior probability ≧0.95 and ML bootstrap values ≧70%. JS, NP, LC, NJ and FX in the name of sample (e.g. m12_JS) stand for Jishan River, Nanpan River, Lancang River, Nujiang River and Fuxian Lake, respectively.
Mentions: We used BPA method [59] to estimate the ancestral distribution area and investigate the evolutionary history of Percocypris. Based on the present-day drainage distributions of Percocypris, five units (Upper Yangtze River, A; Upper Pearl River, B; Fuxian Lake, C; Mekong River, D; and Salween River, E) were defined. The optimized phylogeny (derived from Figure 3) was converted into drainage cladogram. Data matrix to the primary BPA was prepared from the cladogram.

Bottom Line: The results of Maximum Likelihood and Bayesian Inference analyses show that Percocypris is a strongly supported monophyletic group and that it is the sister group of Schizothorax.This study suggests that vicariance (due to the uplift of the Tibetan Plateau modifying the large-scale morphologies of drainage basins in the Southeastern Tibetan Plateau) has played an important role in the speciation of the genus.Furthermore, external morphological characters (such as the length of the fins) and an internal trait (the position of pterygiophore) appear to be correlated with different habitats in rivers and the lake.

View Article: PubMed Central - PubMed

Affiliation: State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China.

ABSTRACT
Fierce predatory freshwater fishes, the species of Percocypris (Cyprinidae, Teleostei) inhabit large rivers or lakes, and have a specific distribution pattern. Only a single species or subspecies occurs in each large-scale drainage basin of the Southeastern Tibetan Plateau. In this study, the molecular phylogenetic relationships for all but one of the described subspecies/species of Percocypris were investigated based on three mitochondrial genes (16S; COI; Cyt b) and one nuclear marker (Rag2). The results of Maximum Likelihood and Bayesian Inference analyses show that Percocypris is a strongly supported monophyletic group and that it is the sister group of Schizothorax. Combined with analyses of morphological characters, our results suggest that Percocypris needs to be reclassified, and we propose that six species be recognized, with corresponding distributions in five main drainages (including one lake). In addition, based on the results of the estimation of divergence times and ancestral drainages, we hypothesize that Percocypris likely originated in the early Miocene from a paleo-connected drainage system containing the contemporary main drainages of the Southeastern Tibetan Plateau. This study suggests that vicariance (due to the uplift of the Tibetan Plateau modifying the large-scale morphologies of drainage basins in the Southeastern Tibetan Plateau) has played an important role in the speciation of the genus. Furthermore, external morphological characters (such as the length of the fins) and an internal trait (the position of pterygiophore) appear to be correlated with different habitats in rivers and the lake.

Show MeSH