1. Molecular phylogeny of the Pectinoidea (Bivalvia) indicates Propeamussiidae to be a non-monophyletic family with one clade sister to the scallops (Pectinidae).
- Author
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Smedley GD, Audino JA, Grula C, Porath-Krause A, Pairett AN, Alejandrino A, Lacey L, Masters F, Duncan PF, Strong EE, and Serb JM
- Subjects
- Animals, Bayes Theorem, Likelihood Functions, Time Factors, Bivalvia classification, Bivalvia genetics, Pectinidae classification, Pectinidae genetics, Phylogeny
- Abstract
Scallops (Pectinidae) are one of the most diverse families of bivalves and have been a model system in evolutionary biology. However, in order to understand phenotypic evolution, the Pectinidae needs to be placed in a deeper phylogenetic framework within the superfamily Pectinoidea. We reconstructed a molecular phylogeny for 60 species from four of the five extant families within the Pectinoidea using a five gene dataset (12S, 16S, 18S, 28S rRNAs and histone H3). Our analyses give consistent support for the non-monophyly of the Propeamussiidae, with a subset of species as the sister group to the Pectinidae, the Propeamussiidae type species as sister to the Spondylidae, and the majority of propeamussiid taxa sister to the Spondylidae + Pr. dalli. This topology represents a previously undescribed relationship of pectinoidean families. Our results suggest a single origin for eyes within the superfamily and likely multiple instances of loss for these characters. However, it is now evident that reconstructing the evolutionary relationships of Pectinoidea will require a more comprehensive taxonomic sampling of the Propeamussiidae sensu lato., (Copyright © 2019 Elsevier Inc. All rights reserved.)
- Published
- 2019
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