A new cyprinid from the Oligocene of Qaidam Basin, north-eastern Tibetan plateau, and its implications

Yang, Tao; Liang, Wei-Yu; Cai, Jiejin; Gu, Haoran; Han, Lei; Chen, Hongyu; Wang, Haojian; Bao, Lin; Yan, Daojiang

doi:10.1080/14772019.2021.2015470

Cited by 9 publications

(7 citation statements)

References 56 publications

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“…The global cooling at the Eocene–Oligocene transition ( Zachos et al., 2001 ; Zanazzi et al., 2007 ) not only profoundly changed the climatic conditions and floristic composition in southeastern Tibet, i.e., from subtropical/warm temperate in the late Eocene to cool temperate in the early Oligocene ( Su et al., 2018 ), but this climatic event and consequent cooling and aridification ( Dupont-Nivet et al., 2007 ) have also made an impact on the succession of fish fauna in Huatugou ( Yang et al., 2018 , 2022 ). After the Eocene–Oligocene transition, global temperatures gradually rose ( Zachos et al., 2001 ).…”

Section: Discussionmentioning

confidence: 99%

“…Angiosperms play an important role in global ecosystems today; meanwhile, fossil angiosperms can provide important information on Cenozoic climate change ( Sun et al., 2002 ). However, compared with abundant Cenozoic vertebrate fossils found in the basin ( Wang et al., 2007 , 2015 ; Chang et al., 2008 ; Yang et al., 2018 , 2022 ), the fossil record of angiosperms from the Paleogene Qaidam Basin is relatively small. The plant records published thus far include Simaroubaceae Candolle, Leguminosae Jussieu, Salicaceae Mirb., and Juglandaceae DC.…”

Section: Introductionmentioning

confidence: 98%

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Megafossils of Betulaceae from the Oligocene of Qaidam Basin and their paleoenvironmental and phytogeographic implications

Yang¹,

Cai²,

Dai³

et al. 2024

Plant Diversity

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

Megafossils of Betulaceae from the Oligocene of Qaidam Basin and their paleoenvironmental and phytogeographic implications

Yang¹,

Cai²,

Dai³

et al. 2024

Plant Diversity

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“…The main morphological difference between T. hsutschouensis and T. robusta lies in the different degrees of body surface scales. The body surface of T. hsutschouensis is almost bare and scaleless, which can reduce the waste of body temperature in cold areas (Wang, Yang, et al, 2015 ; Wang, Zhang, et al, 2015 ; Wang et al, 2016 ; Yang et al, 2021 ). This may be due to scale degradation during the Pleistocene Ice Age, which was an adaptive evolution of T. hsutschouensis to a cold environment.…”

Section: Discussionmentioning

confidence: 99%

“…Triplophysa hsutschouensis is widely distributed in the Shiyang, Heihe, and Shule Rivers, and is regarded as an effective species because its body length is 7.18-7.60 times of body height. Wang (1991) (Wang, Yang, et al, 2015;Wang et al, 2016;Yang et al, 2021). This may be due to scale degradation during the Pleistocene Ice Age, which was an adaptive evolution of T. hsutschouensis to a cold environment.…”

Section: Speciesdistributionandcolonizationmentioning

confidence: 99%

Unrecognized diversity, genetic structuring, and phylogeography of the genus Triplophysa (Cypriniformes: Nemacheilidae) sheds light on two opposite colonization routes during Quaternary glaciation that occurred in the Qilian Mountains

Du¹,

Zhang²,

Lou³

et al. 2023

Ecology and Evolution

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In recent years, the influence of historical geological and climatic events on the evolution of flora and fauna in the Tibetan Plateau has been a hot research topic. The Qilian Mountain region is one of the most important sources of biodiversity on the Qinghai-Tibet Plateau. Many species existed in the region during the Pleistocene glacial oscillation, and the complex geographical environment provided suitable conditions for the survival of local species. The shrinkage, expansion, and transfer of the distribution range and population size of species have significant effects on genetic diversity and intraspecific differentiation. To reveal the effects of geological uplift and climate oscillation on the evolution of fish populations in the Qilian Mountains, we investigated the genetic structure, phylogenetic relationship, and phylogeographical characteristics of genus Triplophysa species in the Qilian Mountains using the mitochondrial DNA gene (COI), three nuclear genes (RAG1, sRH, and Myh6) and 11 pairs of nuclear microsatellite markers. We collected 11 species of genus Triplophysa living in the Qilian Mountains, among which Triplophysa hsutschouensis and Triplophysa papillosolabiata are widely distributed in the rivers on the northern slope of the Qilian Mountains.There was a high degree of lineage differentiation among species, and the genetic diversity of endemic species was low. The different geographical groups of T. papillosolabiata presented some allogeneic adaptation and differentiation, which was closely related to the changes in the river system. Except for the population expansion event of T. hsutschouensis during the last glacial period of the Qinghai-Tibet Plateau (0.025 MYA), the population sizes of other plateau loach species remained stable without significant population expansion. Starting from the east and west sides of the Qilian Mountains, T. hsutschouensis, and T. papillosolabiata showed two species colonization routes in opposite directions. The geological events of the uplift of the Qinghai-Tibet Plateau and the climatic oscillation of the Quaternary glaciation had a great influence 2of24 | DU et al.

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“…Among all orogenic belts on Earth, the Tibetan Plateau is known as the "roof of the world" due to its vast area and high average elevation (>4000 m above sea level). The uplift of the plateau has significantly affected the climate, caused geoenvironmental changes in Asia and created a unique highland habitat with extreme coldness, high UVR, low oxygen, and in some places, severe aridity, which has attracted extensive attention from biologists and paleontologists (Qu et al, 2013;Wang et al, 2015;Yuan et al, 2020;Liu et al, 2021a;Mao et al, 2021;Yang et al, 2021a). However, numerous fish are adapted to such extreme conditions, including Schizothoracinae (family: Cyprinidae), Sisoridae (superfamily: Sisoroidea; order: Siluriformes), and Triplophysa (family: Nemacheilidae; order: Cypriniformes).…”

Section: Introductionmentioning

confidence: 99%

Interspecific differences and ecological correlations of ultraviolet radiation tolerance in low- and high-altitude fishes

Wang

et al. 2022

Front. Mar. Sci.

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Ultraviolet radiation (UVR) is a ubiquitous environmental factor and with complex and diverse effects on organisms, and the UVR tolerance of species varies due to selection, adaptation and evolution. This study aimed to improve our understanding of the interspecific differences in UVR tolerance of fishes. First, we compared skin histology between high-altitude fishes and their low-altitude relatives. Second, we assessed the skin histological changes of 22 fish species after UVR exposure and quantified their damage levels. Finally, the factors affecting the difference in UVR tolerance among fishes were studied. Thin or absent scales was a common characteristic of high-altitude fishes in different taxonomic groups, but other skin structure parameters (the thickness of the dermis and epidermis, the size and number of mucous and club cells) did not show convergence. After UVR exposure, the size and number of mucous cells and club cells in the experimental fishes were generally reduced, but the changes in epidermal and dermal thickness varied among species. The change rata of melanin area was strong negatively correlated with the level of damage, indicating that increased melanin was helpful to reduce UVR damage. On the whole, the skin histological changes of high-altitude fishes after UVR exposure did not differ from those of low-altitude fishes. However, the epidermis and dermis of Gymnocypris eckloni and Oncorhynchus mykiss, which had the highest UVR tolerance, were nonpathologically thickened, indicating that they may contribute to UVR tolerance. There were significant interspecific differences in UVR tolerance among the experimental fishes, with high-altitude and cold water fishes showing stronger UVR tolerance. Interestingly, some low-altitude cold water fish (e.g., O. mykiss) also showed high UVR tolerance, suggesting that besides high-altitude adaptation, low-temperature adaptation also may play an important role in organismal adaptation to UVR.

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A new cyprinid from the Oligocene of Qaidam Basin, north-eastern Tibetan plateau, and its implications

Cited by 9 publications

References 56 publications

Megafossils of Betulaceae from the Oligocene of Qaidam Basin and their paleoenvironmental and phytogeographic implications

Megafossils of Betulaceae from the Oligocene of Qaidam Basin and their paleoenvironmental and phytogeographic implications

Unrecognized diversity, genetic structuring, and phylogeography of the genus Triplophysa (Cypriniformes: Nemacheilidae) sheds light on two opposite colonization routes during Quaternary glaciation that occurred in the Qilian Mountains

Interspecific differences and ecological correlations of ultraviolet radiation tolerance in low- and high-altitude fishes

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