Oceanic currents, not land masses, maintain the genetic structure of the mangrove Rhizophora mucronata Lam. (Rhizophoraceae) in Southeast Asia
Aim Mangroves are intertidal plants with sea-dispersed propagules, hence their population structure can offer valuable insights into the biogeographical processes driving population subdivision in coastal species. In this study, we used molecular markers and ocean circulation simulations to examine...
| Main Authors: | , , , , , , , , , , , , , |
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| Format: | Article |
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Wiley-Blackwell Publishing
2014
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| _version_ | 1825948503140990976 |
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| author | Wee, Alison K. S. Takayama, Koji Asakawa, Takeshi Thompson, Bijoy Onrizal, Sungkaew, Sarawood Tung, Nguyen Xuan Salleh@Japri, Mohd Nazre Soe, Khin Khin Tan, Hugh T. W. Watano, Yasuyuki Baba, Shigeyuki Kajita, Tadashi Webb, Edward L. |
| author_facet | Wee, Alison K. S. Takayama, Koji Asakawa, Takeshi Thompson, Bijoy Onrizal, Sungkaew, Sarawood Tung, Nguyen Xuan Salleh@Japri, Mohd Nazre Soe, Khin Khin Tan, Hugh T. W. Watano, Yasuyuki Baba, Shigeyuki Kajita, Tadashi Webb, Edward L. |
| author_sort | Wee, Alison K. S. |
| collection | UPM |
| description | Aim
Mangroves are intertidal plants with sea-dispersed propagules, hence their population structure can offer valuable insights into the biogeographical processes driving population subdivision in coastal species. In this study, we used molecular markers and ocean circulation simulations to examine the effects of ocean currents and land masses on the genetic structure of the major mangrove species Rhizophora mucronata.
Location
Southeast Asia.
Methods
We assessed the genetic structure of 13 R. mucronata populations from continental Southeast Asia and Sumatra using 10 microsatellite loci. We first examined the relative effects of geographical distance and land mass (the Malay Peninsula) in shaping the genetic structure of R. mucronata in Southeast Asia. We then characterized the genetic structure of R. mucronata and compared it to the simulated ocean circulation patterns within our study region.
Results
Despite the low genetic diversity, significant genetic structuring was detected across R. mucronata populations. Contrary to observations on other mangrove species, genetic differentiation in R. mucronata was not found across the coasts of the Malay Peninsula, nor was it correlated with geographical distance. Instead, the most distinct genetic discontinuity was found at the boundary between the Andaman Sea and the Malacca Strait, and this can be explained by the prevailing ocean currents in this region.
Main conclusions
Our study presents novel evidence that the genetic structure of R. mucronata is maintained by ocean current-facilitated propagule dispersal. |
| first_indexed | 2024-03-06T08:29:49Z |
| format | Article |
| id | upm.eprints-34711 |
| institution | Universiti Putra Malaysia |
| last_indexed | 2024-03-06T08:29:49Z |
| publishDate | 2014 |
| publisher | Wiley-Blackwell Publishing |
| record_format | dspace |
| spelling | upm.eprints-347112015-12-21T11:54:01Z http://psasir.upm.edu.my/id/eprint/34711/ Oceanic currents, not land masses, maintain the genetic structure of the mangrove Rhizophora mucronata Lam. (Rhizophoraceae) in Southeast Asia Wee, Alison K. S. Takayama, Koji Asakawa, Takeshi Thompson, Bijoy Onrizal, Sungkaew, Sarawood Tung, Nguyen Xuan Salleh@Japri, Mohd Nazre Soe, Khin Khin Tan, Hugh T. W. Watano, Yasuyuki Baba, Shigeyuki Kajita, Tadashi Webb, Edward L. Aim Mangroves are intertidal plants with sea-dispersed propagules, hence their population structure can offer valuable insights into the biogeographical processes driving population subdivision in coastal species. In this study, we used molecular markers and ocean circulation simulations to examine the effects of ocean currents and land masses on the genetic structure of the major mangrove species Rhizophora mucronata. Location Southeast Asia. Methods We assessed the genetic structure of 13 R. mucronata populations from continental Southeast Asia and Sumatra using 10 microsatellite loci. We first examined the relative effects of geographical distance and land mass (the Malay Peninsula) in shaping the genetic structure of R. mucronata in Southeast Asia. We then characterized the genetic structure of R. mucronata and compared it to the simulated ocean circulation patterns within our study region. Results Despite the low genetic diversity, significant genetic structuring was detected across R. mucronata populations. Contrary to observations on other mangrove species, genetic differentiation in R. mucronata was not found across the coasts of the Malay Peninsula, nor was it correlated with geographical distance. Instead, the most distinct genetic discontinuity was found at the boundary between the Andaman Sea and the Malacca Strait, and this can be explained by the prevailing ocean currents in this region. Main conclusions Our study presents novel evidence that the genetic structure of R. mucronata is maintained by ocean current-facilitated propagule dispersal. Wiley-Blackwell Publishing 2014-05 Article PeerReviewed Wee, Alison K. S. and Takayama, Koji and Asakawa, Takeshi and Thompson, Bijoy and Onrizal, and Sungkaew, Sarawood and Tung, Nguyen Xuan and Salleh@Japri, Mohd Nazre and Soe, Khin Khin and Tan, Hugh T. W. and Watano, Yasuyuki and Baba, Shigeyuki and Kajita, Tadashi and Webb, Edward L. (2014) Oceanic currents, not land masses, maintain the genetic structure of the mangrove Rhizophora mucronata Lam. (Rhizophoraceae) in Southeast Asia. Journal of Biogeography, 41 (5). pp. 954-964. ISSN 0305-0270; ESSN: 1365-2699 http://onlinelibrary.wiley.com/doi/10.1111/jbi.12263/abstract 10.1111/jbi.12263 |
| spellingShingle | Wee, Alison K. S. Takayama, Koji Asakawa, Takeshi Thompson, Bijoy Onrizal, Sungkaew, Sarawood Tung, Nguyen Xuan Salleh@Japri, Mohd Nazre Soe, Khin Khin Tan, Hugh T. W. Watano, Yasuyuki Baba, Shigeyuki Kajita, Tadashi Webb, Edward L. Oceanic currents, not land masses, maintain the genetic structure of the mangrove Rhizophora mucronata Lam. (Rhizophoraceae) in Southeast Asia |
| title | Oceanic currents, not land masses, maintain the genetic structure of the mangrove Rhizophora mucronata Lam. (Rhizophoraceae) in Southeast Asia |
| title_full | Oceanic currents, not land masses, maintain the genetic structure of the mangrove Rhizophora mucronata Lam. (Rhizophoraceae) in Southeast Asia |
| title_fullStr | Oceanic currents, not land masses, maintain the genetic structure of the mangrove Rhizophora mucronata Lam. (Rhizophoraceae) in Southeast Asia |
| title_full_unstemmed | Oceanic currents, not land masses, maintain the genetic structure of the mangrove Rhizophora mucronata Lam. (Rhizophoraceae) in Southeast Asia |
| title_short | Oceanic currents, not land masses, maintain the genetic structure of the mangrove Rhizophora mucronata Lam. (Rhizophoraceae) in Southeast Asia |
| title_sort | oceanic currents not land masses maintain the genetic structure of the mangrove rhizophora mucronata lam rhizophoraceae in southeast asia |
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