Phylogenetic convergence and multiple shell shape optima for gliding scallops (Bivalvia: Pectinidae)

Simple item page
dc.contributor.authorSerb, J.
dc.contributor.authorSherratt, E.
dc.contributor.authorAlejandrino, A.
dc.contributor.authorAdams, D.
dc.date.issued2017
dc.description.abstractAn important question in evolutionary biology is how often, and to what extent, do similar ecologies elicit distantly related taxa to evolve towards the same phenotype? In some scenarios, the repeated evolution of particular phenotypes may be expected, for instance when species are exposed to common selective forces that result from strong functional demands. In bivalved scallops (Pectinidae), some species exhibit a distinct swimming behaviour (gliding), which requires specific biomechanical attributes to generate lift and reduce drag during locomotive events. Further, a phylogenetic analysis revealed that gliding behaviour has independently evolved at least four times, which raises the question as to whether these independent lineages have also converged on a similar phenotype. Here, we test the hypothesis that gliding scallops display shell shape convergence using a combination of geometric morphometrics and phylogenetic comparative methods that evaluate patterns of multivariate trait evolution. Our findings reveal that the gliding species display less morphological disparity and significant evolutionary convergence in morphospace, relative to expectations under a neutral model of Brownian motion for evolutionary phenotypic change. Intriguingly, the phylomorphospace patterns indicate that gliding lineages follow similar evolutionary trajectories to not one, but two regions of morphological space, and subsequent analyses identified significant differences in their biomechanical parameters, suggesting that these two groups of scallops accomplish gliding in different ways. Thus, whereas there is a clear gliding morphotype that has evolved convergently across the phylogeny, functionally distinct morphological subforms are apparent, suggesting that there may be two optima for the gliding phenotype in the Pectinidae.
dc.description.statementofresponsibilityJ. M. Serb, E. Sherratt, A. Alejandrino & D. C. Adams
dc.identifier.citationJournal of Evolutionary Biology, 2017; 30(9):1736-1747
dc.identifier.doi10.1111/jeb.13137
dc.identifier.issn1010-061X
dc.identifier.issn1420-9101
dc.identifier.orcidSherratt, E. [0000-0003-2164-7877]
dc.identifier.urihttp://hdl.handle.net/2440/114114
dc.language.isoen
dc.publisherWiley
dc.rights© 2017 European Society for Evolutionary Biology
dc.source.urihttps://doi.org/10.1111/jeb.13137
dc.subjectMacroevolution
dc.subjectmollusca
dc.subjectmorphology
dc.subjectmorphometrics
dc.subjectphylogenetics
dc.titlePhylogenetic convergence and multiple shell shape optima for gliding scallops (Bivalvia: Pectinidae)
dc.typeJournal article
pubs.publication-statusPublished

Files

Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
hdl_114114.pdf
Size:
1.85 MB
Format:
Adobe Portable Document Format
Description:
Accepted version
Download

Collections

Zoology publications