The shell structure of
            <i>Ptychodesma</i>
            (Cyrtodontidae; Bivalvia) and its bearing on the evolution of the Pteriomorphia

Carter, J. G.; Tevesz, Michael J. S.

doi:10.1098/rstb.1978.0073

Cited by 15 publications

(4 citation statements)

References 3 publications

(4 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Here, additional ostreid sequences with perhaps slower rates will certainly increase our understanding of the origins of this group. The basal position of the Mytilus species on the pteriomorph branch is in agreement with shell structure characteristics (Waller 1978;Carter and Tevesz 1978). The branching order of Arca and Atrina remains uncertain to some extent.…”

Section: Phylogenetic Implicationsmentioning

confidence: 58%

What can 18S rDNA do for bivalve phylogeny?

Steïner

Müller

1996

J Mol Evol

View full text Add to dashboard Cite

Molecular characteristics, especially 18S rDNA sequences, may be of great value for the study of bivalve evolution and its numerous morphological convergencies once the reliability of these data can be evaluated. The analysis of 11 published complete molluscan sequences and two new ones, Arca noae and Atrina pectinata, reveals considerable differences in relative substitution rates. The gastropod and eulamellibranch species have the fastest and Atrina species have the slowest rates. Two methods are used to assess the information contents of the dataset in addition to bootstrap analysis, spectral analysis, and the "pattern of resolved nodes" technique. Tree reconstructions by parsimony, neighbor-joining, and maximum-likelihood differ in regard to the position of the eulamellibranch family Mactridae and of Crassostrea. Although there is a signal for the monophyly of Bivalvia, Mactridae cluster with Gastropoda in most runs, rendering Bivalvia diphyletic. The position of Crassostrea was extremely variable, probably due to the high substitution rate of this species. Atrina roots deeper than Arca in all trees, although a corresponding signal in spectral analysis is absent. Phylogenetic signals among the three pectinid species are low but sufficient to resolve the branching pattern. The tree inferred from the 18S rDNA and from morphological data has Bivalvia monophyletic with a basal polytomy of Mactridae, Crassostrea, and the remaining Pteriomorphia, where Arca branches off before Atrina and the Pectinidae. Argopecten is sister group to the other two pectinids; 18S sequence data will have great impact on our understanding of bivalve phylogeny, but only when more sequences of similar substitution rates are available.

show abstract

Section: Phylogenetic Implicationsmentioning

confidence: 58%

What can 18S rDNA do for bivalve phylogeny?

Steïner

Müller

1996

J Mol Evol

View full text Add to dashboard Cite

show abstract

“…The diversity of this group reflects several adaptive radiations and the shell forms have attracted the interest of many palaeontologists and neontologists (e.g. [13][14][15][16][17][18][19][20][21]). The multiple adaptive radiations have rendered phylogenetic classifications difficult owing to convergence and/or parallel evolution at various levels [22].…”

Section: Introductionmentioning

confidence: 99%

Cementing mussels to oysters in the pteriomorphian tree: a phylogenomic approach

et al. 2016

View full text Add to dashboard Cite

Mussels (Mytilida) are a group of bivalves with ancient origins and some of the most important commercial shellfish worldwide. Mytilida consists of approximately 400 species found in various littoral and deep-sea environments, and are part of the higher clade Pteriomorphia, but their exact position within the group has been unstable. The multiple adaptive radiations that occurred within Pteriomorphia have rendered phylogenetic classifications difficult and uncertainty remains regarding the relationships among most families. To address this phylogenetic uncertainty, novel transcriptomic data were generated to include all five orders of Pteriomorphia. Our results, derived from complex analyses of large datasets from 41 transcriptomes and evaluating possible pitfalls affecting phylogenetic reconstruction (matrix occupancy, heterogeneity, evolutionary rates, evolutionary models), consistently recover a well-supported phylogeny of Pteriomorphia, with the only exception of the most complete but smallest data matrix (Matrix 3: 51 genes, 90% gene occupancy). Maximum-likelihood and Bayesian mixture model analyses retrieve strong support for: (i) the monophyly of Pteriomorphia, (ii) Mytilida as a sister group to Ostreida, and (iii) Arcida as sister group to all other pteriomorphians. The basal position of Arcida is congruent with its shell microstructure (solely composed of aragonitic crystals), whereas Mytilida and Ostreida display a combination of a calcitic outer layer with an aragonitic inner layer composed of nacre tablets, the latter being secondarily lost in Ostreoidea.

show abstract

“…The morphology of these taxa is also ideal for preserving evidence of predatory attacks by durophagous (shell-crushing) predators. The pterioid taxa we studied possessed at least one valve with a simple, exterior prismatic calcite layer that made their shell highly flexible [90], [91]. This microstructural trait would have enabled Devonian pterioids to seal their shells tightly, enabling them to survive a high degree of shell damage induced by shell-crushing predators ([36]; Fig.…”

Section: Methodsmentioning

confidence: 99%

Abundance Is Not Enough: The Need for Multiple Lines of Evidence in Testing for Ecological Stability in the Fossil Record

et al. 2013

View full text Add to dashboard Cite

The fossil record is the only source of information on the long-term dynamics of species assemblages. Here we assess the degree of ecological stability of the epifaunal pterioid bivalve assemblage (EPBA), which is part of the Middle Devonian Hamilton fauna of New York—the type example of the pattern of coordinated stasis, in which long intervals of faunal persistence are terminated by turnover events induced by environmental change. Previous studies have used changes in abundance structure within specific biofacies as evidence for a lack of ecological stability of the Hamilton fauna. By comparing data on relative abundance, body size, and predation, indexed as the frequency of unsuccessful shell-crushing attacks, of the EPBA, we show that abundance structure varied through time, but body-size structure and predation pressure remained relatively stable. We suggest that the energetic set-up of the Hamilton fauna's food web was able to accommodate changes in species attributes, such as fluctuating prey abundances. Ecological redundancy in prey resources, adaptive foraging of shell-crushing predators (arising from predator behavioral or adaptive switching in prey selection in response to changing prey abundances), and allometric scaling of predator-prey interactions are discussed as potential stabilizing factors contributing to the persistence of the Hamilton fauna's EPBA. Our study underscores the value and importance of multiple lines of evidence in tests of ecological stability in the fossil record.

show abstract

The shell structure of Ptychodesma (Cyrtodontidae; Bivalvia) and its bearing on the evolution of the Pteriomorphia

Cited by 15 publications

References 3 publications

What can 18S rDNA do for bivalve phylogeny?

What can 18S rDNA do for bivalve phylogeny?

Cementing mussels to oysters in the pteriomorphian tree: a phylogenomic approach

Abundance Is Not Enough: The Need for Multiple Lines of Evidence in Testing for Ecological Stability in the Fossil Record

Contact Info

Product

Resources

About