Elucidating the multiple genetic lineages and population genetic structure of the brooding coral Seriatopora (Scleractinia: Pocilloporidae) in the Ryukyu Archipelago
| Autor: | Kazuhiko Sakai, Akira Iguchi, Daisuke Uyeno, Tomofumi Nagata, Satoshi Mitarai, Akira Nishikawa, Yuichi Nakajima |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
0301 basic medicine education.field_of_study Genetic diversity food.ingredient biology ved/biology Ecology Population ved/biology.organism_classification_rank.species Scleractinia Zoology Pocilloporidae Aquatic Science biology.organism_classification 010603 evolutionary biology 01 natural sciences 03 medical and health sciences 030104 developmental biology food Genetic structure Biological dispersal education Seriatopora Seriatopora hystrix |
| Zdroj: | Coral Reefs. 36(2):415-426 |
| ISSN: | 0722-4028 |
| DOI: | 10.1007/s00338-017-1557-x |
| Popis: | The elucidation of species diversity and connectivity is essential for conserving coral reef communities and for understanding the characteristics of coral populations. To assess the species diversity, intraspecific genetic diversity, and genetic differentiation among populations of the brooding coral Seriatopora spp., we conducted phylogenetic and population genetic analyses using a mitochondrial DNA control region and microsatellites at ten sites in the Ryukyu Archipelago, Japan. At least three genetic lineages of Seriatopora (Seriatopora-A, -B, and -C) were detected in our specimens. We collected colonies morphologically similar to Seriatopora hystrix, but these may have included multiple, genetically distinct species. Although sexual reproduction maintains the populations of all the genetic lineages, Seriatopora-A and Seriatopora-C had lower genetic diversity than Seriatopora-B. We detected significant genetic differentiation in Seriatopora-B among the three populations as follows: pairwise F ST = 0.064–0.116 (all P = 0.001), pairwise G′′ST = 0.107–0.209 (all P = 0.001). Additionally, only one migrant from an unsampled population was genetically identified within Seriatopora-B. Because the peak of the settlement of Seriatopora larvae is within 1 d and almost all larvae are settled within 5 d of spawning, our observations may be related to low dispersal ability. Populations of Seriatopora in the Ryukyu Archipelago will probably not recover unless there is substantial new recruitment from distant populations. |
| Databáze: | OpenAIRE |
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