ArticleProceedings. Biological sciences2015
Testing the depth-differentiation hypothesis in a deepwater octocoral.
Article in Proceedings. Biological sciences, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.
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16 citing papers in PubMed.
- Hybridization as driving force for cryptic species diversity in the Caribbean coral genus Madracis.Scientific reports · 2025Article
- High Connectivity at Abyssal Depths: Genomic and Proteomic Insights Into Population Structure of the Pan-Atlantic Deep-Sea BivalveEcology and evolution · 2025Article
- Connectivity and Adaptation Patterns of the Deep-Sea Ground-Forming Sponge Geodia hentscheli Across Its Entire Distribution.Molecular biology and evolution · 2025Article
- Discovery of deep-sea coral symbionts from a novel clade of marine bacteria with severely reduced genomes.Nature communications · 2024Article
- Coral microbiomes are structured by environmental gradients in deep waters.Environmental microbiome · 2024Article
- Bathymetric evolution of black corals through deep time.Proceedings. Biological sciences · 2023Article
- Metabolomic richness and fingerprints of deep-sea coral species and populations.Metabolomics : Official journal of the Metabolomic Society · 2019Article
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- Population genetic structure and connectivity of deep-sea stony corals (Order Scleractinia) in the New Zealand region: Implications for the conservation and management of vulnerable marine ecosystems.Evolutionary applications · 2017Article
- Closely related octopus species show different spatial genetic structures in response to the Antarctic seascape.Ecology and evolution · 2017Article
- Environmental filtering and neutral processes shape octocoral community assembly in the deep sea.Oecologia · 2017Article
- Article
- Article
- Potential Connectivity of Coldwater Black Coral Communities in the Northern Gulf of Mexico.PloS one · 2016Article
- Home Bodies and Wanderers: Sympatric Lineages of the Deep-Sea Black Coral Leiopathes glaberrima.PloS one · 2015Article
- Article
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5 authors.
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Abstract
The depth-differentiation hypothesis proposes that the bathyal region is a source of genetic diversity and an area where there is a high rate of species formation. Genetic differentiation should thus occur over relatively small vertical distances, particularly along the upper continental slope (200-1000 m) where oceanography varies greatly over small differences in depth. To test whether genetic differentiation within deepwater octocorals is greater over vertical rather than geographical distances, Callogorgia delta was targeted. This species commonly occurs throughout the northern Gulf of Mexico at depths ranging from 400 to 900 m. We found significant genetic differentiation (FST = 0.042) across seven sites spanning 400 km of distance and 400 m of depth. A pattern of isolation by depth emerged, but geographical distance between sites may further limit gene flow. Water mass boundaries may serve to isolate populations across depth; however, adaptive divergence with depth is also a possible scenario. Microsatellite markers also revealed significant genetic differentiation (FST = 0.434) between C. delta and a closely related species, Callogorgia americana, demonstrating the utility of microsatellites in species delimitation of octocorals. Results provided support for the depth-differentiation hypothesis, strengthening the notion that factors covarying with depth serve as isolation mechanisms in deep-sea populations.
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