Dataset Information

Oreonectesdamingshanensis (Cypriniformes, Nemacheilidae), a new species of stream fish from Guangxi, Southwest China.

ABSTRACT: In this work, a new species of the genus Oreonectes is described, named Oreonectesdamingshanensis Yu, Luo, Lan, Xiao & Zhou, sp. nov., collected from the Damingshan Mountains of the Guangxi Zhuang Autonomous Region, China. Phylogenetic trees constructed based on the mitochondrial Cyt b showed that the new species represents an independent evolutionary lineage, with uncorrected genetic distances (p-distance) from congeners ranging from 6.1% to 8.9%. Morphologically, the new species can be distinguished from five other species of the genus by a combination of characters. The discovery of this new species raises the number of known species of Oreonectes from five to six. Our study suggests that O.platycephalus may be a complex containing multiple species and that previously recorded areas need to be further delimited and reevaluated.

SUBMITTER: Yu J

PROVIDER: S-EPMC10520720 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature

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Oreonectesdamingshanensis (Cypriniformes, Nemacheilidae), a new species of stream fish from Guangxi, Southwest China.

Yu Jing J Luo Tao T Lan Chang-Ting CT Zhou Jia-Jun JJ Deng Huai-Qing HQ Xiao Ning N Zhou Jiang J

ZooKeys 20230918

In this work, a new species of the genus Oreonectes is described, named Oreonectesdamingshanensis Yu, Luo, Lan, Xiao & Zhou, sp. nov., collected from the Damingshan Mountains of the Guangxi Zhuang Autonomous Region, China. Phylogenetic trees constructed based on the mitochondrial Cyt b showed that the new species represents an independent evolutionary lineage, with uncorrected genetic distances (p-distance) from congeners ranging from 6.1% to 8.9%. Morphologica ...[more]

PMID: 37767522

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Project description:Two new species of the genus Triplophysa from southwestern Guizhou Province, China, are described. These are Triplophysaziyunensis Wu, Luo, Xiao & Zhou, sp. nov. and Triplophysayaluwang Lan, Liu, Zhou & Zhou, sp. nov. from Maoying Town, Ziyun County, Guizhou Province, China. Triplophysaziyunensis Wu, Luo, Xiao & Zhou, sp. nov. is distinguished from other hypogean species of the genus Triplophysa by having a combination of the following characteristics: body naked, scaleless, pigmented markings on surface of body, except ventral; eyes reduced, diameter 2.4-4.9% of head length; pelvic-fin tip extending to anus; tip of pectoral fin not reaching pelvic fin origin; anterior and posterior nostrils closely set, with anterior nostril elongated to a barbel-like tip; tip of outrostral barbel extending backward, not reaching anterior margin of the eye; lateral line complete; posterior chamber of air bladder degenerated; and fin differences. Triplophysayaluwang Lan, Liu, Zhou & Zhou, sp. nov. is distinguished from other hypogean species of the genus Triplophysa by having a combination of the following characteristics: body naked, scaleless, with irregular pale and dark brownish brown markings, except ventrally; eyes reduced, diameter 4.6-6.1% of head length; pelvic-fin tip reaching anus; tip of pectoral fin not reaching to pelvic fin origin; anterior and posterior nostrils closely set, with anterior nostril elongated to a barbel-like tip; tip of outrostral barbel extending backward, not reaching to anterior margin of the eye; lateral line complete; posterior chamber of air bladder degenerated; and fin differences. Mitochondrial Cyt b revealed relatively small genetic differences, 1.4-2.0%, between the two new species and close relatives. Nuclear gene RAG1 indicated that the two new species possessed unique haplotypes with multiple linking mutations. This study emphasizes the importance of utilizing nuclear genes to identify new species in rapidly speciation cave species, with small genetic differences due to mitochondrial introgression occurring interspecies.

Dataset Information

Oreonectesdamingshanensis (Cypriniformes, Nemacheilidae), a new species of stream fish from Guangxi, Southwest China.

Publications

<i>Oreonectesdamingshanensis</i> (Cypriniformes, Nemacheilidae), a new species of stream fish from Guangxi, Southwest China.

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Dataset Information

Oreonectesdamingshanensis (Cypriniformes, Nemacheilidae), a new species of stream fish from Guangxi, Southwest China.

Publications

﻿<i>Oreonectesdamingshanensis</i> (Cypriniformes, Nemacheilidae), a new species of stream fish from Guangxi, Southwest China.

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure

Tweets

<i>Oreonectesdamingshanensis</i> (Cypriniformes, Nemacheilidae), a new species of stream fish from Guangxi, Southwest China.