- 期刊
Diversity of Taiwanese Brackish Crabs Genus Ptychognathus Stimpson, 1858 (Crustacea: Brachyura: Varunidae) based on DNA Barcodes, with Descriptions of Two New Species
摘要
Species in the brackish crab genus Ptychognathus are common in the seashore and estuary habitats with freshwater input. Due to their similar morphologies and dull colorations, it is always difficult to distinguish the species in this genus. In this study, the DNA barcode gene COI (cytochrome c oxidase subunit I) was used to help identify Ptychognathus from Taiwan. The results showed that the 10 species can be identified successfully based on COI, with intraspecific distances below 1.54% and interspecific distances of 12.2%-19.57%. In addition, two new species of Ptychognathus are described from Taiwan. Ptychognathus makii sp. nov. from southern Taiwan is similar to P. altimanus (Rathbun, 1914), and P. stimpsoni sp. nov. from southern Taiwan and the southern Philippines resembles P. aff. barbatus (A. Milne-Edwards, 1873) and P. pusillus Heller, 1865. Both species can be distinguished from other congeners by a suite of characters, including the carapace, orbital region, frontal region, telson of male pleon, male first gonopod, and setae on ambulatory legs.
被引用紀錄
延伸閱讀
- Tan, S. H., Huang, J. F., & Ng, K. L. (1999). Crabs of the Family Parthenopidae (Crustacea: Decapoda: Brachyura) from Taiwan. Zoological Studies, 38(2), 196-206. https://www.airitilibrary.com/Article/Detail?DocID=10215506-199904-201306260004-201306260004-196-206
- Ng, P. K., Lin, C. W., & Ho, P. H. (2018). On Three Species of Reef-dwelling Pilumnid Crabs from Taiwan, with Notes on Heteropilumnus De Man, 1895 (Crustacea: Brachyura). Zoological Studies, 57(), 1-17-012. https://doi.org/10.6620/ZS.2018.57-12
- Shih, H. T., & Suzuki, H. (2008). Taxonomy, Phylogeny, and Biogeography of the Endemic Mudflat Crab Helice/Chasmagnathus Complex (Crustacea: Brachyura: Varunidae) from East Asia. Zoological Studies, 47(1), 114-125. https://www.airitilibrary.com/Article/Detail?DocID=10215506-200801-47-1-114-125-a
- Ng, P. K. L., & Chan, T. Y. (1997). Two newly recorded crab genera (Crustacea: Decapoda: Brachyura) from Taiwan: Platypilumnus (Goneplacidae) and Trachycarcinus (Atelecylidae). 臺灣省立博物館半年刊, 50(2), 107-112. https://doi.org/10.6532/JTM.199712_50(2).0004
- Huang, C., Ahyong, S. T., & Shih, H. T. (2017). Cantopotamon, A New Genus of Freshwater Crabs from Guangdong, China, with Descriptions of Four New Species (Crustacea: Decapoda: Brachyura: Potamidae). Zoological Studies, 56(), 1-20-041. https://doi.org/10.6620/ZS.2017.56-41