Souquet, Louise;
Guenser, Pauline;
Girard, Catherine;
Mazza, Michele;
Rigo, Manuel;
Goudemand, Nicolas;
(2022)
Temperature-driven heterochrony as a main evolutionary response to climate changes in conodonts.
Proceedings of the Royal Society B: Biological Sciences
, 289
(1985)
, Article 20220614. 10.1098/rspb.2022.0614.
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Abstract
Can we predict the evolutionary response of organisms to climate changes? The direction of greatest intraspecific phenotypic variance is thought to correspond to an 'evolutionary line of least resistance', i.e. a taxon's phenotype is expected to evolve along that general direction, if not constrained otherwise. In particular, heterochrony, whereby the timing or rate of developmental processes are modified, has often been invoked to describe evolutionary trajectories and it may be advantageous to organisms when rapid adaptation is critical. Yet, to date, little is known empirically as to which covariation patterns, whether static allometry, as measured in adult forms only, or ontogenetic allometry, the basis for heterochrony, may be prevalent in what circumstances. Here, we quantify the morphology of segminiplanate conodont elements during two distinct time intervals separated by more than 130 Myr: the Devonian-Carboniferous boundary and the Carnian-Norian boundary (Late Triassic). We evidence that the corresponding species share similar patterns of intraspecific static allometry. Yet, during both crises, conodont evolution was decoupled from this common evolutionary line of least resistance. Instead, it followed heterochrony-like trajectories that furthermore appear as driven by ocean temperature. This may have implications for our interpretation of conodonts' and past marine ecosystems' response to environmental perturbations.
| Type: | Article |
|---|---|
| Title: | Temperature-driven heterochrony as a main evolutionary response to climate changes in conodonts |
| Location: | England |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1098/rspb.2022.0614 |
| Publisher version: | https://doi.org/10.1098/rspb.2022.0614 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | ADAPTATIONS, ALLOMETRY, Biology, conodonts, CONSTRAINTS, CYCLES, developmental bias, DEVELOPMENTAL DYNAMICS, Ecology, environment, Environmental Sciences & Ecology, evolution, Evolutionary Biology, geometric morphometrics, IMPACTS, Life Sciences & Biomedicine, Life Sciences & Biomedicine - Other Topics, macroevolution, ONTOGENY, PATTERNS, RECORD, Science & Technology, TIME |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Mechanical Engineering |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10164548 |
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