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Fine-scale structure among mesophotic populations of the great star coral Montastraea cavernosa revealed by SNP genotyping.
Ecol Evol. 2020 Jun; 10(12):6009-6019.EE

Abstract

Mesophotic reefs (30-150 m) have been proposed as potential refugia that facilitate the recovery of degraded shallow reefs following acute disturbances such as coral bleaching and disease. However, because of the technical difficulty of collecting samples, the connectivity of adjacent mesophotic reefs is relatively unknown compared with shallower counterparts. We used genotyping by sequencing to assess fine-scale genetic structure of Montastraea cavernosa at two sites at Pulley Ridge, a mesophotic coral reef ecosystem in the Gulf of Mexico, and downstream sites along the Florida Reef Tract. We found differentiation between reefs at Pulley Ridge (~68 m) and corals at downstream upper mesophotic depths in the Dry Tortugas (28-36 m) and shallow reefs in the northern Florida Keys (Key Biscayne, ~5 m). The spatial endpoints of our study were distinct, with the Dry Tortugas as a genetic intermediate. Most striking were differences in population structure among northern and southern sites at Pulley Ridge that were separated by just 12km. Unique patterns of clonality and outlier loci allele frequency support these sites as different populations and suggest that the long-distance horizontal connectivity typical of shallow-water corals may not be typical for mesophotic systems in Florida and the Gulf of Mexico. We hypothesize that this may be due to the spawning of buoyant gametes, which commits propagules to the surface, resulting in greater dispersal and lower connectivity than typically found between nearby shallow sites. Differences in population structure over small spatial scales suggest that demographic constraints and/or environmental disturbances may be more variable in space and time on mesophotic reefs compared with their shallow-water counterparts.

Authors+Show Affiliations

Department of Marine Biology and Ecology Rosenstiel School of Marine and Atmospheric Science University of Miami Miami Florida. Present address: Hawai'i Institute of Marine Biology University of Hawai'i at Mānoa Kāne'ohe Hawai'i.Department of Marine Biology and Ecology Rosenstiel School of Marine and Atmospheric Science University of Miami Miami Florida. Present address: University of Barcelona Barcelona Spain.Atlantic Oceanographic and Meteorological Laboratory National Oceanographic and Atmospheric Administration Miami Flordia. Cooperative Institute for Marine and Atmospheric Studies University of Miami Miami Florida.Department of Marine Biology and Ecology Rosenstiel School of Marine and Atmospheric Science University of Miami Miami Florida.Department of Marine Biology and Ecology Rosenstiel School of Marine and Atmospheric Science University of Miami Miami Florida.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

32607208

Citation

Drury, Crawford, et al. "Fine-scale Structure Among Mesophotic Populations of the Great Star Coral Montastraea Cavernosa Revealed By SNP Genotyping." Ecology and Evolution, vol. 10, no. 12, 2020, pp. 6009-6019.
Drury C, Pérez Portela R, Serrano XM, et al. Fine-scale structure among mesophotic populations of the great star coral Montastraea cavernosa revealed by SNP genotyping. Ecol Evol. 2020;10(12):6009-6019.
Drury, C., Pérez Portela, R., Serrano, X. M., Oleksiak, M., & Baker, A. C. (2020). Fine-scale structure among mesophotic populations of the great star coral Montastraea cavernosa revealed by SNP genotyping. Ecology and Evolution, 10(12), 6009-6019. https://doi.org/10.1002/ece3.6340
Drury C, et al. Fine-scale Structure Among Mesophotic Populations of the Great Star Coral Montastraea Cavernosa Revealed By SNP Genotyping. Ecol Evol. 2020;10(12):6009-6019. PubMed PMID: 32607208.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Fine-scale structure among mesophotic populations of the great star coral Montastraea cavernosa revealed by SNP genotyping. AU - Drury,Crawford, AU - Pérez Portela,Rocío, AU - Serrano,Xaymara M, AU - Oleksiak,Marjorie, AU - Baker,Andrew C, Y1 - 2020/05/20/ PY - 2020/01/17/received PY - 2020/03/28/revised PY - 2020/04/15/accepted PY - 2020/7/2/entrez PY - 2020/7/2/pubmed PY - 2020/7/2/medline KW - Deep Reef Refugia KW - Montastraea cavernosa KW - genetic connectivity KW - genotyping by sequencing KW - mesophotic reefs SP - 6009 EP - 6019 JF - Ecology and evolution JO - Ecol Evol VL - 10 IS - 12 N2 - Mesophotic reefs (30-150 m) have been proposed as potential refugia that facilitate the recovery of degraded shallow reefs following acute disturbances such as coral bleaching and disease. However, because of the technical difficulty of collecting samples, the connectivity of adjacent mesophotic reefs is relatively unknown compared with shallower counterparts. We used genotyping by sequencing to assess fine-scale genetic structure of Montastraea cavernosa at two sites at Pulley Ridge, a mesophotic coral reef ecosystem in the Gulf of Mexico, and downstream sites along the Florida Reef Tract. We found differentiation between reefs at Pulley Ridge (~68 m) and corals at downstream upper mesophotic depths in the Dry Tortugas (28-36 m) and shallow reefs in the northern Florida Keys (Key Biscayne, ~5 m). The spatial endpoints of our study were distinct, with the Dry Tortugas as a genetic intermediate. Most striking were differences in population structure among northern and southern sites at Pulley Ridge that were separated by just 12km. Unique patterns of clonality and outlier loci allele frequency support these sites as different populations and suggest that the long-distance horizontal connectivity typical of shallow-water corals may not be typical for mesophotic systems in Florida and the Gulf of Mexico. We hypothesize that this may be due to the spawning of buoyant gametes, which commits propagules to the surface, resulting in greater dispersal and lower connectivity than typically found between nearby shallow sites. Differences in population structure over small spatial scales suggest that demographic constraints and/or environmental disturbances may be more variable in space and time on mesophotic reefs compared with their shallow-water counterparts. SN - 2045-7758 UR - https://www.unboundmedicine.com/medline/citation/32607208/Fine-scale_structure_among_mesophotic_populations_of_the_great_star_coral_Montastraea_cavernosa_revealed_by_SNP_genotyping DB - PRIME DP - Unbound Medicine ER -
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