Cause or consequence? Exploring the role of phenotypic plasticity and genetic polymorphism in the emergence of phenotypic spatial patterns of the European eel
|Author(s)||Mateo Maria1, Lambert Patrick1, Tetard Stephane2, Castonguay Martin3, Ernande Bruno4, Drouineau Hilaire1|
|Affiliation(s)||1 : Irstea, HYNES Irstea EDF R&D, UR EABX Ecosyst Aquat & Changements Globaux, 50 Ave Verdun, F-33612 Cestas, France.
2 : HYNES Irstea EDF R&D, EDF R&D, Lab Natl Hydraul & Environm, 6 Quai Watier, F-78401 Chatou, France.
3 : Minist Peches & Oceans, Inst Maurice Lamontagne, CP 1000,850 Route Mer, Mont Joli, PQ G5H 3Z4, Canada.
4 : IFREMER, Lab Ressources Halieut Boulogne, 150 Quai Gambetta,BP 699, F-62321 Boulogne Sur Mer, France.
|Source||Canadian Journal Of Fisheries And Aquatic Sciences (0706-652X) (Canadian Science Publishing, Nrc Research Press), 2017-07 , Vol. 74 , N. 7 , P. 987-999|
|WOS© Times Cited||5|
|Abstract||The European eel (Anguilla anguilla), and generally, temperate eels, are relevant species for studying adaptive mechanisms to environmental variability because of their large distribution areas and their limited capacity of local adaptation. In this context, GenEveel, an individual-based optimization model, was developed to explore the role of adaptive phenotypic plasticity and genetic-dependent habitat selection, in the emergence of observed spatial life-history traits patterns for eels. Results suggest that an interaction of genetically and environmentally controlled growth may be the basis for genotype-dependent habitat selection, whereas plasticity plays a role in changes in life-history traits and demographic attributes. Therefore, this suggests that those mechanisms are responses to address environmental heterogeneity. Moreover, this brings new elements to explain the different life strategies of males and females. A sensitivity analysis showed that the parameters associated with the optimization of fitness and growth genotype were crucial in reproducing the spatial life-history patterns. Finally, it raises the question of the impact of anthropogenic pressures that can cause direct mortalities but also modify demographic traits, and act as a selection pressure.|