The two sides of the Mediterranean: Population genomics of the Black Sea urchin Arbacia lixula (Linnaeus 1758) in a Warming Sea
| Autor: | Creu Palacín, Marta Pascual, Alex Garcia-Cisneros, Víctor Ordóñez, Owen S. Wangensteen, Xavier Turon, Carlos Carreras |
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| Rok vydání: | 2021 |
| Předmět: |
Mediterranean climate
engineer species Sea urchin Eriçons de mar population genomics Mediterrània (Costa) Science Ocean Engineering QH1-199.5 Aquatic Science Oceanography sea urchin Population genomics Benthic communities Genetics Black sea Outlier analysis Arbacia lixula Genotyping by sequencing (GBS) Sea urchins VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920 Water Science and Technology outlier analysis Global and Planetary Change VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920 biology Ecology benthic communities genotyping by sequencing (GBS) General. Including nature conservation geographical distribution biology.organism_classification Engineer species Geography Mediterranean Coast Genètica |
| Zdroj: | Dipòsit Digital de la UB Universidad de Barcelona Digital.CSIC. Repositorio Institucional del CSIC instname Frontiers in Marine Science, Vol 8 (2021) |
| Popis: | Este artículo contiene 14 páginas, 7 figuras, 2 tablas. Global environmental changes may have a profound impact on ecosystems. In this context, it is crucial to gather biological and ecological information of the main species in marine communities to predict and mitigate potential effects of shifts in their distribution, abundance, and interactions. Using genotyping by sequencing (GBS), we assessed the genetic structure of a keystone species in the Mediterranean shallow littoral ecosystems, the black sea urchin Arbacia lixula. This bioengineer species can shape their communities due to its grazing activity and it is experiencing an ongoing expansion with increasing temperatures. The population genomic analyses on 5,241 loci sequenced in 240 individuals from 11 Mediterranean sampled populations revealed that all populations were diverse and showed significant departure from equilibrium. Albeit genetic differentiation was in general shallow, a significant break separated the western and eastern Mediterranean populations, a break not detected in previous studies with less resolutive markers. Notably, no clear effect of the Almería-Oran front, an important break in the Atlanto-Mediterranean transition, could be detected among the western basin populations, where only a slight differentiation of the two northernmost populations was found. Despite the generally low levels of genetic differentiation found, we identified candidate regions for local adaptation by combining different genomic analysis with environmental data. Salinity, rather than temperature, seemed to be an important driver of genetic structure in A. lixula. Overall, from a population genomics standpoint, there is ample scope for A. lixula to continue thriving and adapting in the warming Mediterranean. This research was funded by projects PopCOmics (CTM2017- 88080, funded by MCIN/AEI/10.13039/501100011033 and by “ERDF A way of making Europe” of the European Union) and MarGeCh (PID2020-118550RB, funded by MCIN/AEI/10.13039/501100011033) from the Spanish Government. This is a contribution from the Consolidated Research Group “Benthic Biology and Ecology” SGR2017-1120 (Catalan Government). Some localities were sampled under the European FP7 CoCoNet project (Ocean 2011-4, Grant Agreement #287844). |
| Databáze: | OpenAIRE |
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