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How the Genus Eusirus amphipods evolved and speciated in the Antarctic
Salabao, Louraine; Frederich, Michel; Lepoint, Gilles et al.
2020SCAR Online Conference 2020
 

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Keywords :
Amphipod; Mitogenome; Antarctica
Abstract :
[en] Antarctica has been subjected to different climatic changes in the past requiring the marine fauna to either adapt to novel environmental conditions, migrate to better conditions or become extinct. Currently, warming of Antarctica is happening at an unprecedented rate. Understanding how these organisms have managed to survive in the past will thus allow us to predict their possible responses to future climate changes. Here, the amphipod Genus Eusirus will be used as model organisms since these amphipods are very diverse and knowledge on their ecology and biogeography is still very limited. In this study, molecular, morphological and ecological data of Eusirus will be collected. Because no reference genome exists for this group, we will use a Next generation sequencing approach to obtain the complete mitochondrial genome (mitogenome) of these amphipods. Draft mitogenomes have been assembled and annotated from skim sequencing for two Eusirus species. From these mitogenomes, we designed primers for long-range PCRs to amplify the entire mitogenome in several pieces. Complete mitogenomes will allow us to estimate genetic divergence amongst different species and check for specific temperature adaptations of mitochondrial genes. The obtained mitogenome data will also provide better supported phylogenies for reconstructing evolutionary history of Eusirus. In order to get a better understanding of adaptive and/or non-adaptive processes which led to the current diversity of Eusirus amphipods, we will explore how morphological and ecological diversity are partitioned along the resulting phylogeny, concurrently with potential changes in lineage diversification through time.
Disciplines :
Environmental sciences & ecology
Zoology
Genetics & genetic processes
Author, co-author :
Salabao, Louraine ;  Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Morphologie fonctionnelle et évolutive
Frederich, Michel  ;  Université de Liège - ULiège > Département de pharmacie > Pharmacognosie
Lepoint, Gilles  ;  Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Océanographie biologique
Verheye, Marie ;  Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Océanographie biologique
Schon, Isa;  Universiteit Hasselt - UH > Centre for Environmental Sciences, Zoology: Toxicology and Biodiversity
Language :
English
Title :
How the Genus Eusirus amphipods evolved and speciated in the Antarctic
Publication date :
August 2020
Event name :
SCAR Online Conference 2020
Event date :
3-7 of August 2020
Audience :
International
Funders :
BELSPO - Politique scientifique fédérale [BE]
Available on ORBi :
since 30 October 2020

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