- 期刊
Reproductive Isolation among Acropora Species (Scleractinia: Acroporidae) in a Marginal Coral Assemblage
並列摘要
Nuwei Vivian Wei, Hernyi Justin Hsieh, Chang-Feng Dai, Carden C. Wallace, Andrew H. Baird, and Chaolun Allen Chen (2012) Reproductive isolation among Acropora species (Scleractinia: Acroporidae) in a marginal coral assemblage. Zoological Studies 51(1): 85-92. Hybridization was proposed as being an important source of evolutionary novelty in broadcast-spawning reef-building corals. In addition, hybridization was hypothesized to be more frequent at the periphery of species' ranges and in marginal habitats. We tested the potential for hybridization in 2 ways: observations of the time of spawning and non-choice interspecific fertilization experiments of 4 sympatric Acropora species in a non-reefal coral assemblage at Chinwan Inner Bay (CIB), Penghu Is., Taiwan. We found that colonies of more than 1 species rarely released gametes at the same time, thus limiting the opportunities for cross-fertilization in the wild. On the few occasions when different species released gametes in synchrony, interspecific fertilization in experimental crosses was uniformly low (the proportion of eggs fertilized ranged 0%-4.58% with a mode of 0%), and interspecific-crossed embryos ceased development and died within 12 h after initially being fertilized. Ecological and experimental analyses indicated that reproductive isolation exists in these 4 Acropora species even though they have the opportunities to spawn synchronously, suggesting that hybridization is not very frequent in this marginal coral habitat at CIB.
延伸閱讀
- Yang, S. Y., Fong, W. L., Chow, W. S., Hsu, C. M., Chan, C. L. C., Keshavmurthy, S., & Chen, C. A. (2018). Development of Novel Polymorphic Microsatellite Markers in Catch Bowl Coral, Isopora palifera (Scleractinia; Acroporidae) Using Next-generation Sequencing. Zoological Studies, 57(), 1-10-032. https://doi.org/10.6620/ZS.2018.57-32
- Okubo, N., Taniguchi, H., & Omori, M. (2009). Sexual Reproduction in Transplanted Coral Fragments of Acropora nasuta. Zoological Studies, 48(4), 442-447. https://www.airitilibrary.com/Article/Detail?DocID=10215506-200907-200907230050-200907230050-442-447
- Yuyama, I., Nakamura, T., Higuchi, T., & Hidaka, M. (2016). Different Stress Tolerances of Juveniles of the Coral Acropora tenuis Associated with Clades C1 and D Symbiodinium. Zoological Studies, 55(), 1-9-019. https://doi.org/10.6620/ZS.2016.55-19
- Ramos, D. V. R., Weil, E., & Schizas, N. V. (2014). Morphological and Genetic Evaluation of the Hydrocoral Millepora Species Complex in the Caribbean. Zoological Studies, 53(), 47-61. https://doi.org/10.1186/1810-522X-53-4
- Wei, V. N. W., Wallace, C. C., Dai, C. F., Pillay, K. R. M., & Chen, A. C. L. (2006). Analyses of the Ribosomal Internal Transcribed Spacers (ITS) and the 5.8S Gene Indicate that Extremely High rDNA Heterogeneity is a Unique Feature in the Scleractinian Coral Genus Acropora (Scleractinia; Acroporidae). Zoological Studies, 45(3), 404-418. https://www.airitilibrary.com/Article/Detail?DocID=10215506-200607-201306060033-201306060033-404-418