Evolution of the Yangtze River reconstructed by the largest molecular phylogeny of Cyprinidae

Chen, Feng; Xue, Ge; Wang, Yeke; Zhang, Hucai; He, Jun; Xie, Ping

doi:10.21203/rs.3.rs-145035/v1

Cited by 3 publications

(2 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…However, the most striking result is a dramatic increase in lag times across the unconformity between the Jinghezhen and Guanghuasi through the Three Gorges during the Guanghuasi stage (Figure S2; Wang et al, 2014;Yang et al, 2019). In addition, the endemic East Asian cyprinids which dispersed from the Pearl River and Red River drainages (location in Figure 1) to the Yangtze River suggest that the Three Gorges had been formed at the late Oligocene-early Miocene (Chen et al, 2021). Our AFT data do not reflect a major contribution from the Tibetan Plateau which should be well recognized by a Cenozoic exhumation signal (Cao et al, 2019;Gourbet et al, 2020;Wang et al, 2011).…”

Section: Discussionmentioning

confidence: 99%

Formation of the Yangtze Three Gorges: Insights from detrital apatite fission‐track dating of sediments from the Jianghan Basin

et al. 2021

View full text Add to dashboard Cite

The establishment of the course of the modern Yangtze River is a topic of ongoing debate, with the formation of the Three Gorges, incised in the Huangling Massif, representing the key event under discussion. Downstream of the Three Gorges, the Cenozoic succession of the Jianghan Basin has been investigated to detect the moment of incision into the Three Gorges. Detrital apatite fission-track data from Eocene to Miocene sediments drilled in the Jianghan Basin suggest that material was supplied by the Dabie, Qinling and Jiangnan Orogens during Eocene to early Oligocene times.At late Oligocene, the source of sediments switched to the Huangling Massif, implying incision of the Three Gorges. We therefore propose that the modern Yangtze River system formed at the late Oligocene.

show abstract

Section: Discussionmentioning

confidence: 99%

Formation of the Yangtze Three Gorges: Insights from detrital apatite fission‐track dating of sediments from the Jianghan Basin

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Log-normal river capture curves follow data from Goldberg et al (2021). Musher et al, 2019;Van Steenberge et al, 2020;Albert et al, 2021;Chen et al, 2021;Sun et al, 2021;van der Merwe et al, 2021).…”

Section: The Mega Capture Hypothesisunclassified

Landscape Evolution as a Diversification Driver in Freshwater Fishes

et al. 2022

View full text Add to dashboard Cite

The exceptional concentration of vertebrate diversity in continental freshwaters has been termed the “freshwater fish paradox,” with > 15,000 fish species representing more than 20% of all vertebrate species compressed into tiny fractions of the Earth’s land surface area (<0.5%) or total aquatic habitat volume (<0.001%). This study asks if the fish species richness of the world’s river basins is explainable in terms of river captures using topographic metrics as proxies. The River Capture Hypothesis posits that drainage-network rearrangements have accelerated biotic diversification through their combined effects on dispersal, speciation, and extinction. Yet rates of river capture are poorly constrained at the basin scale worldwide. Here we assess correlations between fish species density (data for 14,953 obligate freshwater fish species) and basin-wide metrics of landscape evolution (data for 3,119 river basins), including: topography (elevation, average relief, slope, drainage area) and climate (average rainfall and air temperature). We assess the results in the context of both static landscapes (e.g., species-area and habitat heterogeneity relationships) and transient landscapes (e.g., river capture, tectonic activity, landscape disequilibrium). We also relax assumptions of functional neutrality of basins (tropical vs. extratropical, tectonically stable vs. active terrains). We found a disproportionate number of freshwater species in large, lowland river basins of tropical South America, Africa, and Southeast Asia, under predictable conditions of large geographic area, tropical climate, low topographic relief, and high habitat volume (i.e., high rainfall rates). However, our results show that these conditions are only necessary, but not fully sufficient, to explain the basins with the highest diversity. Basins with highest diversity are all located on tectonically stable regions, places where river capture is predicted to be most conducive to the formation of high fish species richness over evolutionary timescales. Our results are consistent with predictions of several landscape evolution models, including the River Capture Hypothesis, Mega Capture Hypothesis, and Intermediate Capture Rate Hypothesis, and support conclusions of numerical modeling studies indicating landscape transience as a mechanistic driver of net diversification in riverine and riparian organisms with widespread continental distributions.

show abstract

Discovering unknown Madagascar biodiversity: integrative taxonomy of raft spiders (Pisauridae: Dolomedes)

Yu,

Kuntner

2024

PeerJ

View full text Add to dashboard Cite

Madagascar is a global biodiversity hotspot, but its biodiversity continues to be underestimated and understudied. Of raft spiders, genus Dolomedes Latreille, 1804, literature only reports two species on Madagascar. Our single expedition to humid forests of eastern and northern Madagascar, however, yielded a series of Dolomedes exemplars representing both sexes of five morphospecies. To avoid only using morphological diagnostics, we devised and tested an integrative taxonomic model for Dolomedes based on the unified species concept. The model first determines morphospecies within a morphometrics framework, then tests their validity via species delimitation using COI. It then incorporates habitat preferences, geological barriers, and dispersal related traits to form hypotheses about gene flow limitations. Our results reveal four new Dolomedes species that we describe from both sexes as Dolomedes gregoric sp. nov., D. bedjanic sp. nov., D. hydatostella sp. nov., and D. rotundus sp. nov. The range of D. kalanoro Silva & Griswold, 2013, now also known from both sexes, is expanded to eastern Madagascar. By increasing the known raft spider diversity from one valid species to five, our results merely scratch the surface of the true Dolomedes species diversity on Madagascar. Our integrative taxonomic model provides the framework for future revisions of raft spiders anywhere.

show abstract

Evolution of the Yangtze River reconstructed by the largest molecular phylogeny of Cyprinidae

Cited by 3 publications

References 38 publications

Formation of the Yangtze Three Gorges: Insights from detrital apatite fission‐track dating of sediments from the Jianghan Basin

Formation of the Yangtze Three Gorges: Insights from detrital apatite fission‐track dating of sediments from the Jianghan Basin

Landscape Evolution as a Diversification Driver in Freshwater Fishes

Discovering unknown Madagascar biodiversity: integrative taxonomy of raft spiders (Pisauridae: Dolomedes)

Contact Info

Product

Resources

About