Genomic data reveals habitat partitioning in massive Porites on Guam, Micronesia.

Autor: Primov KD; University of Guam Marine Laboratory, UOG Station, Mangilao, GU, USA. kprimov1@gmail.com.; Department of Integrative Biology, University of Texas at Austin, Austin, TX, USA. kprimov1@gmail.com., Burdick DR; University of Guam Marine Laboratory, UOG Station, Mangilao, GU, USA., Lemer S; University of Guam Marine Laboratory, UOG Station, Mangilao, GU, USA., Forsman ZH; King Abdullah University of Science and Technology, 23955, Thuwal, Saudi Arabia., Combosch DJ; University of Guam Marine Laboratory, UOG Station, Mangilao, GU, USA.
Jazyk: angličtina
Zdroj: Scientific reports [Sci Rep] 2024 Jul 24; Vol. 14 (1), pp. 17107. Date of Electronic Publication: 2024 Jul 24.
DOI: 10.1038/s41598-024-67992-w
Abstrakt: Corals in marginal reef habitats generally exhibit less bleaching and associated mortality compared to nearby corals in more pristine reef environments. It is unclear, however, if these differences are due to environmental differences, including turbidity, or genomic differences between the coral hosts in these different environments. One particularly interesting case is in the coral genus Porites, which contains numerous morphologically similar massive Porites species inhabiting a wide range of reef habitats, from turbid river deltas and stagnant back reefs to high-energy fore reefs. Here, we generate ddRAD data for 172 Porites corals from river delta and adjacent (<0.5 km) fore reef populations on Guam to assess the extent of genetic differentiation among massive Porites corals in these two contrasting environments and throughout the island. Phylogenetic and population genomic analyses consistently identify seven different clades of massive Porites, with the two largest clades predominantly inhabiting either river deltas or fore reefs, respectively. No population structure was detected in the two largest clades, and Cladocopium was the dominant symbiont genus in all clades and environments. The perceived bleaching resilience of corals in marginal reefs may therefore be attributed to interspecific differences between morphologically similar species, in addition to potentially mediating environmental differences. Marginal reef environments may therefore not provide a suitable refuge for many reef corals in a heating world, but instead host additional cryptic coral diversity.
(© 2024. The Author(s).)
Databáze: MEDLINE
Externí odkaz:
Nepřihlášeným uživatelům se plný text nezobrazuje