The influence of environmental variability of a coastal lagoon ecosystem on genetic diversity and structure of white seabream [Diplodus sargus (Linnaeus 1758)] populations

As coastal lagoons serve as nursery areas for some marine and estuarine fish, selective pressures of these brackish or hypersaline lagoons may influence the genetic structure of species and populations. We examined spatial and temporal genetic patterns at eight microsatellite loci in white seabream [Diplodus sargus (Linnaeus 1758)] recruits from the Mar Menor (Southeast Spain) and compared these loci with those in coastal populations from the open sea, observing a high degree of genetic diversity and spatio-temporal genetic stability. However, the results suggest the presence of subpopulations or genetic substructures in the Mar Menor D. sargus population that could be interpreted as a homogeneous mixture of individuals from three differentiated subpopulations in the Mediterranean and evidence of the Wahlund effect. It also suggests that D. sargus adults return to their original spawning habitat, thus conserving the genetic differences among the respective populations over time. Overall, this study demonstrates the importance of the Mar Menor coastal lagoon as a nursery area for the conservation of genetic diversity of D. sargus populations.

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Hernandez-Garcia R. Munoz I. Lopez-Capel A. Marcos C. y Perez-Ruzafa A. The influence of environmental variability of a coastal lagoon ecosystem on genetic diversity and structure of white seabream [Diplodus sargus (Linnaeus 1758)] populations. Jhon Wiley & Sons, 2014. https://doi.org/10.1111/maec.12210

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Resource type Article
Date of creation 2024-11-05
Date of last revision 2025-01-20
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Metadata identifier 1cf3b125-6d83-5927-9acf-08360bcec4f7
Metadata language Spanish
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High-value dataset category Earth observation and environment
ISO 19115 topic category biota
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Name of the dataset creator Hernandez-Garcia, R., Munoz, I., Lopez-Capel, A., Marcos, C. y Perez-Ruzafa, A.
Name of the dataset editor Jhon Wiley & Sons
Other identifier DOI: 10.1111/maec.12210
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Email of the dataset creator irenemg@um.es
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