Morphometric Differentiation of the Swimming Crab <i>Portunus sanguinolentus</i> (Herbst, 1783) Populations in East Asia: Implications for Stock Identification and Management
Morphometric disparities were employed to characterize the geographical variations in and elucidate the phylogeography of <i>Portunus sanguinolentus</i> in East Asia. In this study, a comprehensive assessment was undertaken based on measurements from 833 individual crabs. These crabs wer...
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MDPI AG
2023-09-01
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| author | Wei-Chieh Kao Ping-Hung Chang Chun-Han Shih Po-Cheng Chen Tzong-Der Tzeng Yu-San Han Yu-Ming Lu |
| author_facet | Wei-Chieh Kao Ping-Hung Chang Chun-Han Shih Po-Cheng Chen Tzong-Der Tzeng Yu-San Han Yu-Ming Lu |
| author_sort | Wei-Chieh Kao |
| collection | DOAJ |
| description | Morphometric disparities were employed to characterize the geographical variations in and elucidate the phylogeography of <i>Portunus sanguinolentus</i> in East Asia. In this study, a comprehensive assessment was undertaken based on measurements from 833 individual crabs. These crabs were sampled from eight distinct locations, namely Kyushu (KS), Fuzhou (FZ), Yilan (YL), Xiamen (XM), Tainan (TN), Hong Kong (HK), Vietnam (VN), and Singapore (SG). Twelve morphometric measurements were standardized based on size using the allometric method. A cluster analysis and a canonical variate analysis (CVA) were then conducted for a data analysis. Randomization tests were subsequently performed to validate the morphometric differences observed among the groups. The analytical results classified the eight sampled populations into at least two distinct clusters. The first cluster included three samples from China (specifically FZ, XM, and HK), while the second cluster consisted of samples from East Asia (including KS, YL, TN, VN, and SG). The CVA revealed a tripartite division into three groups: the mainland China group (FZ, XM, and HK), the Kuroshio group (KS, YL, and TN), and the Southeast Asia group (VN and SG). The observed morphometric variations between these broad groups were statistically significant for both genders. These differences may be attributed to evolutionary origins, geographical events, or environmental adaptations. This study highlights the effectiveness of morphometric techniques in providing comprehensive insights into species delimitation and philogeographic relationships. |
| first_indexed | 2024-03-10T21:31:56Z |
| format | Article |
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| language | English |
| last_indexed | 2024-03-10T21:31:56Z |
| publishDate | 2023-09-01 |
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| series | Water |
| spelling | doaj.art-089bf58243e445cdab4f7dc0b2e084d32023-11-19T15:15:14ZengMDPI AGWater2073-44412023-09-011519333510.3390/w15193335Morphometric Differentiation of the Swimming Crab <i>Portunus sanguinolentus</i> (Herbst, 1783) Populations in East Asia: Implications for Stock Identification and ManagementWei-Chieh Kao0Ping-Hung Chang1Chun-Han Shih2Po-Cheng Chen3Tzong-Der Tzeng4Yu-San Han5Yu-Ming Lu6Institute of Fisheries Science, National Taiwan University, Taipei 10617, TaiwanFisheries Research Institute, Ministry of Agriculture, Tainan 70153, TaiwanDepartment of Leisure & Tourism Management, Shu-Te University, Kaohsiung 82445, TaiwanSchool of Economics and Management, Sanming University, Sanming 365004, ChinaDepartment of Hospitality and Baking Management, Shu-Te University, Kaohsiung 82445, TaiwanInstitute of Fisheries Science, National Taiwan University, Taipei 10617, TaiwanInstitute of Fisheries Science, National Taiwan University, Taipei 10617, TaiwanMorphometric disparities were employed to characterize the geographical variations in and elucidate the phylogeography of <i>Portunus sanguinolentus</i> in East Asia. In this study, a comprehensive assessment was undertaken based on measurements from 833 individual crabs. These crabs were sampled from eight distinct locations, namely Kyushu (KS), Fuzhou (FZ), Yilan (YL), Xiamen (XM), Tainan (TN), Hong Kong (HK), Vietnam (VN), and Singapore (SG). Twelve morphometric measurements were standardized based on size using the allometric method. A cluster analysis and a canonical variate analysis (CVA) were then conducted for a data analysis. Randomization tests were subsequently performed to validate the morphometric differences observed among the groups. The analytical results classified the eight sampled populations into at least two distinct clusters. The first cluster included three samples from China (specifically FZ, XM, and HK), while the second cluster consisted of samples from East Asia (including KS, YL, TN, VN, and SG). The CVA revealed a tripartite division into three groups: the mainland China group (FZ, XM, and HK), the Kuroshio group (KS, YL, and TN), and the Southeast Asia group (VN and SG). The observed morphometric variations between these broad groups were statistically significant for both genders. These differences may be attributed to evolutionary origins, geographical events, or environmental adaptations. This study highlights the effectiveness of morphometric techniques in providing comprehensive insights into species delimitation and philogeographic relationships.https://www.mdpi.com/2073-4441/15/19/3335morphometric variationstock structurephylogeography<i>Portunus sanguinolentus</i> |
| spellingShingle | Wei-Chieh Kao Ping-Hung Chang Chun-Han Shih Po-Cheng Chen Tzong-Der Tzeng Yu-San Han Yu-Ming Lu Morphometric Differentiation of the Swimming Crab <i>Portunus sanguinolentus</i> (Herbst, 1783) Populations in East Asia: Implications for Stock Identification and Management Water morphometric variation stock structure phylogeography <i>Portunus sanguinolentus</i> |
| title | Morphometric Differentiation of the Swimming Crab <i>Portunus sanguinolentus</i> (Herbst, 1783) Populations in East Asia: Implications for Stock Identification and Management |
| title_full | Morphometric Differentiation of the Swimming Crab <i>Portunus sanguinolentus</i> (Herbst, 1783) Populations in East Asia: Implications for Stock Identification and Management |
| title_fullStr | Morphometric Differentiation of the Swimming Crab <i>Portunus sanguinolentus</i> (Herbst, 1783) Populations in East Asia: Implications for Stock Identification and Management |
| title_full_unstemmed | Morphometric Differentiation of the Swimming Crab <i>Portunus sanguinolentus</i> (Herbst, 1783) Populations in East Asia: Implications for Stock Identification and Management |
| title_short | Morphometric Differentiation of the Swimming Crab <i>Portunus sanguinolentus</i> (Herbst, 1783) Populations in East Asia: Implications for Stock Identification and Management |
| title_sort | morphometric differentiation of the swimming crab i portunus sanguinolentus i herbst 1783 populations in east asia implications for stock identification and management |
| topic | morphometric variation stock structure phylogeography <i>Portunus sanguinolentus</i> |
| url | https://www.mdpi.com/2073-4441/15/19/3335 |
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