1
|
Shi BY, Pan D, Zhang KQ, Gu TY, Yeo DCJ, Ng PKL, Cumberlidge N, Sun HY. Diversification of freshwater crabs on the sky islands in the Hengduan Mountains Region, China. Mol Phylogenet Evol 2024; 190:107955. [PMID: 37898294 DOI: 10.1016/j.ympev.2023.107955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 10/23/2023] [Accepted: 10/25/2023] [Indexed: 10/30/2023]
Abstract
The numerous naturally-fragmented sky islands (SIs) in the Hengduan Mountains Region (HMR) of southwestern China constitute discontinuous landscapes where montane habitats are isolated by dry-hot valleys which have fostered exceptional species diversification and endemicity. However, studies documenting the crucial role of SI on the speciation dynamics of native freshwater organisms are scarce. Here we used a novel set of comprehensive genetic markers (24 nuclear DNA sequences and complete mitogenomes), morphological characters, and biogeographical information to reveal the evolutionary history and speciation mechanisms of a group of small-bodied montane potamids in the genus Tenuipotamon. Our results provide a robustly supported phylogeny, and suggest that the vicariance events of these montane crabs correlate well with the emergence of SIs due to the uplift of the HMR during the Late Oligocene. Furthermore, ancestrally, mountain ridges provided corridors for the dispersal of these montane crabs that led to the colonization of moist montane-specific habitats, aided by past climatic conditions that were the crucial determinants of their evolutionary history. The present results illustrated that the mechanisms isolating SIs are reinforced by the harsh-dry isolating climatic features of dry-hot valleys separating SIs and continue to affect local diversification. This offers insights into the causes of the high biodiversity and endemism shown by the freshwater crabs of the HMR-SIs in southwestern China.
Collapse
Affiliation(s)
- Bo-Yang Shi
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, China
| | - Da Pan
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, China.
| | - Kang-Qin Zhang
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, China
| | - Tian-Yu Gu
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, China
| | - Darren C J Yeo
- Department of Biological Sciences, National University of Singapore, 16 Science Drive 4, Singapore 117558, Republic of Singapore; Lee Kong Chian Natural History Museum, National University of Singapore, 2 Conservatory Drive, Singapore 117377, Republic of Singapore
| | - Peter K L Ng
- Lee Kong Chian Natural History Museum, National University of Singapore, 2 Conservatory Drive, Singapore 117377, Republic of Singapore
| | - Neil Cumberlidge
- Department of Biology, Northern Michigan University, Marquette, MI 49855, USA
| | - Hong-Ying Sun
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, China.
| |
Collapse
|
2
|
Wei C, Sangster G, Olsson U, Rasmussen PC, Svensson L, Yao CT, Carey GJ, Leader PJ, Zhang R, Chen G, Song G, Lei F, Wilcove DS, Alström P, Liu Y. Cryptic species in a colorful genus: Integrative taxonomy of the bush robins (Aves, Muscicapidae, Tarsiger) suggests two overlooked species. Mol Phylogenet Evol 2022; 175:107580. [PMID: 35810968 DOI: 10.1016/j.ympev.2022.107580] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 06/04/2022] [Accepted: 06/16/2022] [Indexed: 10/17/2022]
Abstract
Several cryptic avian species have been validated by recent integrative taxonomic efforts in the Sino-Himalayan mountains, indicating that avian diversity in this global biodiversity hotspot may be underestimated. In the present study, we investigated species limits in the genus Tarsiger, the bush robins, a group of montane forest specialists with high species richness in the Sino-Himalayan region. Based on comprehensive sampling of all 11 subspecies of the six currently recognized species, we applied an integrative taxonomic approach by combining multilocus, acoustic, plumage and morphometric analyses. Our results reveal that the isolated north-central Chinese populations of Tarsiger cyanurus, described as the subspecies albocoeruleus but usually considered invalid, is distinctive in genetics and vocalisation, but only marginally differentiated in morphology. We also found the Taiwan endemic T. indicus formosanus to be distinctive in genetics, song and morphology from T. i. indicus and T. i. yunnanensis of the Sino-Himalayan mountains. Moreover, Bayesian species delimitation using BPP suggests that both albocoeruleus and formosanus merit full species status. We propose their treatment as 'Qilian Bluetail' T. albocoeruleus and 'Taiwan Bush Robin' T. formosanus, respectively.
Collapse
Affiliation(s)
- Chentao Wei
- State Key Laboratory of Biocontrol, School of Ecology, Sun Yat-sen University, Guangzhou 510275, China; South China Institute of Environmental Sciences, MEE, Guangzhou 510530, China
| | | | - Urban Olsson
- Biology and Environmental Sciences, Systematics and Biodiversity, University of Gothenburg, Box 463, SE-405 30 Göteborg, Sweden; Gothenburg Global Biodiversity Centre, Box 461, SE-405 30 Gothenburg, Sweden
| | - Pamela C Rasmussen
- Department of Integrative Biology and MSU Museum, Michigan State University, East Lansing, MI 48864, USA; Bird Group, The Natural History Museum-UK, Akeman Street, Tring, UK
| | | | - Cheng-Te Yao
- Medium Altitude Experimental Station, Endemic Species Research Institute, Chichi, 15 Nantou 552, Taiwan, China
| | - Geoff J Carey
- AEC Ltd, 127 Commercial Centre, Palm Springs, Hong Kong, China
| | - Paul J Leader
- AEC Ltd, 127 Commercial Centre, Palm Springs, Hong Kong, China
| | - Ruiying Zhang
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Guoling Chen
- State Key Laboratory of Biocontrol, School of Ecology, Sun Yat-sen University, Guangzhou 510275, China
| | - Gang Song
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Fumin Lei
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - David S Wilcove
- Princeton School of Public and International Affairs, Princeton University, NJ 08544, USA; Department of Ecology and Evolutionary Biology, Princeton University, Princeton, NJ 08544, USA
| | - Per Alström
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China; Animal Ecology, Department of Ecology and Genetics, Evolutionary Biology Centre, Uppsala University, Norbyvägen 18D, SE-752 36 Uppsala, Sweden.
| | - Yang Liu
- State Key Laboratory of Biocontrol, School of Ecology, Sun Yat-sen University, Guangzhou 510275, China.
| |
Collapse
|