Naslov
Enhancing the effectiveness of restoration actions in a changing ocean: insights from a transregional thermotolerance experiment

Autori
Ledoux, JB. ; Gomez Gras, D. ; Linares, C. ; Montero-Serra, I. ; López-Sendino, P. ; Lopez-Sanz, A. ; Kipson, Silvija ; Bakran-Petricioli, Tatjana ; Ferreti, E., Cerrano, C. ; Garrabou, J.

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
MERCES Project, First Annual meeting, Conference Programme and Abstracts Heraklion, Crete, Greece 20-22 June 2017 / - Heraklion : Project MERCES, 2017, 44-44

Skup
MERCES Project, First Annual meeting, Conference Programme and Abstracts

Mjesto i datum
Heraklion, Grčka, 20.06.2017. - 22.06.2017

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Paramuricea clavata, transregional thermotolerance experiment

Sažetak
In the last decades, large-scale mass mortality events (MMEs) due to positive thermal anomalies linked to climate change dramatically impacted many habitat-forming species from the coralligenous communities, some of the richest communities of the Mediterranean Sea. These events, which extended for thousands of kilometers along the North Western Mediterranean coasts, had a differential impact on individuals, populations and species. For instance, populations of the red gorgonian, Paramuricea clavata, separated by few kilometers showed highly contrasted numbers of damaged colonies. This suggests that individuals within and among populations may respond differentially to the thermal stress driving the MMEs. Understanding the processes underlying these differential responses is thus a crucial step to design efficient restoration actions for coralligenous habitats impacted by MMEs. Previous works conducted on Paramuricea clavata demonstrated that 25°C was a thermal threshold above which necrosis started to be observed. Population genetics approaches gave a first insight in the differential responses to thermal stress questioning the role of local thermal regime. These findings call for a thorough characterization of the potential for adaptation in this species in order to enhance restoration actions. Within MERCES project, we will combine transregional common garden thermotolerance experiments in aquaria and population genomics analyses to disentangle the processes driving the population responses to thermal stress in the temperate habitat forming coral Paramuricea clavata. With this experiment, we will address two main objectives: i) to characterize the patterns of differential responses in Paramuricea clavata ; ii) to explore the molecular basis of the differential responses. This experiment is one of the largest common garden experiments planed to date in the marine realm. Indeed, we will focus on 10 to 12 populations from different parts of the Mediterranean Sea including the Catalan Sea, the Ligurian Sea and the Adriatic Sea. Using novel high throughput sequencing analyses, we will formally characterize the relative role of neutral (migration, genetic drift) and selected (local adaptation) processes on the differential response to thermal stress. Overall, this integrated approach between experimental ecology and the population genomics should allow us to identify resistant populations and colonies that may be used as sources for restoration actions.

Izvorni jezik
Engleski

Znanstvena područja
Biologija

POVEZANOST RADA