Using in-depth genomic knowledge to understand and Using in-depth genomic knowledge to understand and predict short- and long-term responses to climate change in a commercially targeted marine species

Projektbeschreibung

Genomische Horizonte: Untersuchung, wie Tintenfische auf den Klimawandel reagieren

Der Gemeine Krake (Octopus vulgaris) hat sich im Nordatlantik stark vermehrt. Es ist jedoch noch nicht bekannt, warum dem so ist und wie stabil diese Populationen sind. Das über die Marie-Skłodowska-Curie-Maßnahmen unterstützte Projekt EVOLOCT untersucht die Vergangenheit, Gegenwart und Zukunft dieser Populationen, indem es ihre Genetik analysiert und fortschrittliche Computermodelle sowie Umweltdaten verwendet. Im Gegensatz zu früheren Studien werden in dieser Forschung komplexe genetische Veränderungen – sogenannte Strukturvarianten – untersucht, um den Genfluss zwischen Populationen zu verstehen und demografische Historien zu rekonstruieren. Darüber hinaus wird sie Prognosen zu künftigen Verbreitungsmustern, Häufigkeit und Gefährdung liefern. Diese Informationen sind von entscheidender Bedeutung für das wissenschaftliche Fischereimanagement und vertiefen unser Verständnis darüber, wie die Meeresbewohner auf den Klimawandel reagieren.

Ziel

Making the most of genomic tools to understand and predict species response to global change is increasingly important, especially in exploited marine species. In EVOLOCT, I aim to determine the genomic basis of local adaptation, while understanding the past, present, and future population dynamics of Octopus vulgaris. This ecologically and economically significant species has recently expanded northwards in the northeast Atlantic, possibly due to climate change or human exploitation, yet the exact causes and the population stability remain unknown. Moreover, while the importance of structural variants (SVs) has been increasingly recognised in underlying ecotypes and cryptic population structures, SVs remain poorly represented in eco-evolutionary studies. To address these gaps, I will integrate modelling, genomics, and environmental data to characterise present population structure and dynamics, reconstruct their demographic history, and predict their future distribution, abundance, and vulnerability. Pushing the boundaries of current genomics studies, I will incorporate SVs beyond the classic SNPs while combining simulated data with empirical data, as a powerful and comprehensive technique in predicting short- and long-term responses to climate change. I will hone my skills at the host lab of Dr Mérot alongside Prof Charrier and Dr Le Luyer, French experts in evolutionary biology and ecology. My secondment with Asst Prof Oomen in Sweden will expand my skills in modelling and SV analyses. Through these collaborations, I will learn new multidisciplinary approaches and techniques in modelling and genomics. EVOLOCT will undoubtedly enable me to gain a competitive advantage in establishing my career in the dynamic and critical field of evolutionary ecology. Finally, EVOLOCT will greatly advance our understanding of the genomic and evolutionary basis underlying local adaptation while allowing scientifically-informed management of exploited marine species like octopuses.