1. Ecological constraints from incumbent clades drive trait evolution across the tree-of-life of freshwater macroinvertebrates
- Author
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Múrria, Cesc, Dolédec, Sylvain, Papadopoulou, Anna, Vogler, Alfried P., Bonada, Núria, European Commission, Ministerio de Educación y Ciencia (España), Generalitat de Catalunya, Grup de Recerca 'Freshwater Biology and Management' (FEM), Universitat de Barcelona (UB), Laboratoire d'Ecologie des Hydrosystèmes Naturels et Anthropisés (LEHNA), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-École Nationale des Travaux Publics de l'État (ENTPE)-Centre National de la Recherche Scientifique (CNRS), Third Department of Pediatric [Athens, Greece], University of Athens Medical School [Athens]-University General Hospital ' Attikon ' [Athens, Greece], The Natural History Museum [London] (NHM), Departamento de Biologia Animal, Departamento de Biología Animal, Centre National de la Recherche Scientifique (CNRS)-Institut National de la Recherche Agronomique (INRA)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-École Nationale des Travaux Publics de l'État (ENTPE), Athens University Medical School [Athens, Greece]-University General Hospital ' Attikon ' [Athens, Greece], Universitat de Barcelona, and Papadopoulou, Anna [0000-0002-4656-4894]
- Subjects
0106 biological sciences ,0301 basic medicine ,Niche ,Biodiversity & Conservation ,education ,DIVERSITY ,DISPARITY ,Environmental Sciences & Ecology ,Biology ,010603 evolutionary biology ,01 natural sciences ,Freshwater ecosystem ,03 medical and health sciences ,MULTIPLE SEQUENCE ALIGNMENT ,Adaptive radiation ,parasitic diseases ,Freshwater invertebrates ,PHYLOGENETIC ANALYSIS ,14. Life underwater ,RATES ,Clade ,Ecology, Evolution, Behavior and Systematics ,Ecologia fluvial ,Science & Technology ,Phylogenetic tree ,Ecology ,0602 Ecology ,CLADOGENESIS ,SPECIES DIVERSIFICATION ,15. Life on land ,ADAPTIVE RADIATION ,Stream ecology ,0501 Ecological Applications ,030104 developmental biology ,Cladogenesis ,EXTINCTION ,ORIGINS ,[SDE]Environmental Sciences ,Trait ,Biodiversity Conservation ,Species richness ,[SDE.BE]Environmental Sciences/Biodiversity and Ecology ,0502 Environmental Science And Management ,Invertebrats d'aigua dolça ,Life Sciences & Biomedicine - Abstract
The rates of species and trait diversification vary across the Tree-of-Life and over time. Whereas species richness and clade age generally are decoupled, the correlation of accumulated trait diversity of clades (trait disparity) with clade age remains poorly explored. Total trait disparity may be coupled with clade age if the growth of disparity (disparification) within and across clades is continuous with time in an additive niche expansion process (linear-cumulative model), or alternatively if the rate of trait disparification varies over time and decreases as ecological space becomes gradually saturated (disparity-dependent model). Using a clock-calibrated phylogenetic tree for 143 freshwater macroinvertebrate families and richness and trait databases covering > 6400 species, we measured trait disparity in 18 independent clades that successively transitioned to freshwater ecosystems and analyzed its relation with clade age. We found a positive correlation between clade age and total disparity within clades, but no relationship for most individual traits. Traits unique to freshwater lifestyle were highly variable within older clades, while disparity in younger clades shifted towards partially terrestrial lifestyles and saline tolerance to occupy habitats previously inaccessible or underutilized. These results argue that constraints from incumbent lineages limit trait disparity in younger clades that evolved for filling unoccupied regions of the trait space, which suggests that trait disparification may follow a disparity-dependent model. Overall, we provide an empirical pattern that reveals the potential of the disparity-dependent model for understanding fundamental processes shaping trait dynamics across the Tree-of-Life., This research received support from grant CGL2007‐60163/BOS funded by the Spanish Ministry of Education and Science/FEDER (Fondo Europeo de Desarrollo Regional). NB acknowledges the BioFresh EU funded project Biodiversity of Freshwater Ecosystems: Status, Trends, Pressures, and Conservation Priorities (7th FWP contract no. 226874). Further funding support was provided by a Beatriu de Pinós postdoctoral fellowship (BP‐DGR‐2011) to CM by the Agència de Gestió d'Ajuts Universitarisi de Recerca, Generalitat de Catalunya.
- Published
- 2018