Document of bibliographic reference 324916

BibliographicReference record

Type

Bibliographic resource

Type of document

Journal article

BibLvlCode

AS

Title

Lineage identification affects estimates of evolutionary mode in marine snails

Abstract

In order to study evolutionary pattern and process, we need to be able to accurately identify species and the evolutionary lineages from which they are derived. Determining the concordance between genetic and morphological variation of living populations, and then directly comparing extant and fossil morphological data, provides a robust approach for improving our identification of lineages through time. We investigate genetic and shell morphological variation in extant species of Penion marine snails from New Zealand, and extend this analysis into deep time using fossils. We find that genetic and morphological variation identify similar patterns and support most currently recognized extant species. However, some taxonomic over-splitting is detected due to shell size being a poor trait for species delimitation, and we identify incorrect assignment of some fossil specimens. We infer that a single evolutionary lineage (Penion sulcatus) has existed for 22 myr, with most aspects of shell shape and shell size evolving under a random walk. However, by removing samples previously classified as the extinct species P. marwicki, we instead detect morphological stasis for one axis of shell shape variation. This result demonstrates how lineage identification can change our perception of evolutionary pattern and process. [Genotyping by sequencing; geometric morphometrics; morphological evolution; Neogastropoda; phenotype; speciation; stasis.]

Abstract in other language

geometric morphometrics; genotyping by sequencing; morphological evolution;Neogastropoda; phenotype; speciation; stasis

WebOfScience code

https://www.webofscience.com/wos/woscc/full-record/WOS:000593202600005

Bibliographic citation

Vaux, F.; Gemmell, M.R.; Hills, S.F.K.; Marshall, B.A.; Beu, A.G.; Crampton, J.S.; Trewick, S.A.; Morgan-Richards, M. (2020). Lineage identification affects estimates of evolutionary mode in marine snails. Syst. Biol. Corrected proof. https://dx.doi.org/10.1093/sysbio/syaa018

Is peer reviewed

true