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Intertidal population genetic dynamics at a microgeographic seascape scale.
Mol Ecol. 2013 Jun; 22(12):3191-4.ME

Abstract

The intertidal community is among the most physically harsh niches on earth, with highly heterogeneous environmental and biological factors that impose strong habitat selection on population abundance, genetic connectivity and ecological adaptation of organisms in nature. However, most genetic studies to date have concentrated on the influence of basin-wide or regional marine environments (e.g. habitat discontinuities, oceanic currents and fronts, and geographic barriers) on spatiotemporal distribution and composition of intertidal invertebrates having planktonic stages or long-distance dispersal capability. Little is known about sessile marine organisms (e.g. seaweeds) in the context of topographic tidal gradients and reproductive traits at the microgeographic scale. In this issue of Molecular Ecology, Krueger-Hadfield et al. () implemented an elaborate sampling strategy with red seaweed (Chondrus crispus) from a 90-m transect stand near Roscoff and comprehensively detected genome-scale genetic differentiation and biases in ploidy level. This study not only revealed that tidal height resulted in genetic differentiation between high- and low-shore stands and restricted the genetic exchange within the high-shore habitat, but also demonstrated that intergametophytic nonrandom fertilization in C. crispus can cause significant deviation from Hardy-Weinberg equilibrium. Such new genetic insights highlight the importance of microgeographic genetic dynamics and life history characteristics for better understanding the evolutionary processes of speciation and diversification of intertidal marine organisms.

Authors+Show Affiliations

Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't
Comment

Language

eng

PubMed ID

24433569

Citation

Hu, Zi-Min. "Intertidal Population Genetic Dynamics at a Microgeographic Seascape Scale." Molecular Ecology, vol. 22, no. 12, 2013, pp. 3191-4.
Hu ZM. Intertidal population genetic dynamics at a microgeographic seascape scale. Mol Ecol. 2013;22(12):3191-4.
Hu, Z. M. (2013). Intertidal population genetic dynamics at a microgeographic seascape scale. Molecular Ecology, 22(12), 3191-4. https://doi.org/10.1111/mec.12327
Hu ZM. Intertidal Population Genetic Dynamics at a Microgeographic Seascape Scale. Mol Ecol. 2013;22(12):3191-4. PubMed PMID: 24433569.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Intertidal population genetic dynamics at a microgeographic seascape scale. A1 - Hu,Zi-Min, PY - 2013/02/20/received PY - 2013/03/20/revised PY - 2013/03/26/accepted PY - 2014/1/18/entrez PY - 2014/1/18/pubmed PY - 2014/3/14/medline KW - Chondrus crispus KW - intertidal niche KW - microgeographic seascape KW - population genetic dynamics KW - sexual traits KW - tidal amplitude SP - 3191 EP - 4 JF - Molecular ecology JO - Mol Ecol VL - 22 IS - 12 N2 - The intertidal community is among the most physically harsh niches on earth, with highly heterogeneous environmental and biological factors that impose strong habitat selection on population abundance, genetic connectivity and ecological adaptation of organisms in nature. However, most genetic studies to date have concentrated on the influence of basin-wide or regional marine environments (e.g. habitat discontinuities, oceanic currents and fronts, and geographic barriers) on spatiotemporal distribution and composition of intertidal invertebrates having planktonic stages or long-distance dispersal capability. Little is known about sessile marine organisms (e.g. seaweeds) in the context of topographic tidal gradients and reproductive traits at the microgeographic scale. In this issue of Molecular Ecology, Krueger-Hadfield et al. () implemented an elaborate sampling strategy with red seaweed (Chondrus crispus) from a 90-m transect stand near Roscoff and comprehensively detected genome-scale genetic differentiation and biases in ploidy level. This study not only revealed that tidal height resulted in genetic differentiation between high- and low-shore stands and restricted the genetic exchange within the high-shore habitat, but also demonstrated that intergametophytic nonrandom fertilization in C. crispus can cause significant deviation from Hardy-Weinberg equilibrium. Such new genetic insights highlight the importance of microgeographic genetic dynamics and life history characteristics for better understanding the evolutionary processes of speciation and diversification of intertidal marine organisms. SN - 1365-294X UR - https://www.unboundmedicine.com/medline/citation/24433569/Intertidal_population_genetic_dynamics_at_a_microgeographic_seascape_scale_ DB - PRIME DP - Unbound Medicine ER -
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