Chapter 8 Reproduction in the Coral Acropora
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The speciose reef coral Acropora spp. has synchronous spawning. Many of its congeners spawn at the same time; hence, gametes of the different species mix in the water column. Nevertheless, the different species are generally reproductively isolated, although introgressive hybridization has been reported for several congeners. The complex reproductive isolation mechanisms in Acropora species depend on spawning synchronisms and gamete recognition at fertilization. The reticulate evolution that results from introgressive hybridization in Acropora is thought to be related to speciation in the genus. In this chapter, we introduce reproductive isolation in Acropora, focusing on spawning synchronization, regulation of sperm motility, gamete-species recognition, and the potential for hybridization in nature.
KeywordsCoral Synchronous spawning Gamete recognition Hybridization Sperm limitation
Preparation of this chapter was supported in part by a JSPS KAKENHI grant (#17K07414) to MM.
- Coll JC, Leone PA, Bowden BF, Carroll AR, König GM, Heaton A, De Nys R, Maida M, Alino PM, Willis RH (1995) Chemical aspects of mass spawning in corals. II.(-)-Epi-thunbergol, the sperm attractant in the eggs of the soft coral Lobophytum crassum (Cnidaria: Octocorallia). Mar Biol 123:137–143CrossRefGoogle Scholar