Charting Evolution’s Trajectory: Using Molluscan Eye Diversity to Understand Parallel and Convergent Evolution

@article{Serb2008ChartingET,
  title={Charting Evolution’s Trajectory: Using Molluscan Eye Diversity to Understand Parallel and Convergent Evolution},
  author={J. Serb and D. Eernisse},
  journal={Evolution: Education and Outreach},
  year={2008},
  volume={1},
  pages={439-447}
}
For over 100 years, molluscan eyes have been used as an example of convergent evolution and, more recently, as a textbook example of stepwise evolution of a complex lens eye via natural selection. Yet, little is known about the underlying mechanisms that create the eye and generate different morphologies. Assessing molluscan eye diversity and understanding how this diversity came about will be important to developing meaningful interpretations of evolutionary processes. This paper provides an… Expand

Figures and Tables from this paper

Parallel evolution controlled by adaptation and covariation in ammonoid cephalopods
TLDR
The morphological evolution of these two Devonian ammonoid lineages follows a near parallel evolutionary path for some important shell characters during several million years and through their phylogeny, providing evidence that parallel evolution can be driven simultaneously by different factors such as covariation (constructional constraints) and adaptation (natural selection). Expand
Evolutionary Patterns of Ammonoids: Phenotypic Trends, Convergence, and Parallel Evolution
TLDR
Some new methods for the study of ammonoid evolution are exemplified by recent case studies, which suggest that adaptation by means of natural selection is a major cause of homoplastic patterns such as convergence and parallel evolution. Expand
Misconceptions About the Evolution of Complexity
TLDR
The distribution of eyes in extant organisms, combined with what the authors now know about the control of eye development across diverse groups of organisms, provides significant evidence for the evolution of all major components of the eye, from molecular to morphological, and provides an excellent test of predictions based on common ancestry. Expand
Toward Developing Models to Study the Disease, Ecology, and Evolution of the Eye in Mollusca*
TLDR
An overview of molluscan eye research is provided from these two perspectives: eye researchers whose interests involve the development, physiology, and disease of the eye and malacologists who study the complete organism in its natural environment. Expand
Repeated eye reduction events reveal multiple pathways to degeneration in a family of marine snails
TLDR
It is estimated eye loss has evolved at least seven times within Solariellidae, in at least three different ways: characters such as pigmentation loss, obstruction of eye aperture, and “lens” degeneration can occur in any order. Expand
Evolutionary Genomics for Eye Diversification
TLDR
This work has developed microarray that cover the genes related to development, function, and structure of molluscan eye, as an example, for the evolutionary genomic studies. Expand
Scallop genome provides insights into evolution of bilaterian karyotype and development
TLDR
A high-quality, chromosome-anchored reference genome for the scallop Patinopecten yessoensis, a bivalve mollusc that has a slow-evolving genome with many ancestral features, finds unexpected diversity in phototransduction cascades and a potentially ancient Pax2/5/8-dependent pathway for noncephalic eyes. Expand
The evo‐devo of molluscs: Insights from a genomic perspective
TLDR
Recent progress of molluscan genome sequencing as well as novel insights gained from their genomes are reviewed, by emphasizing how mollUScan genomics enhances the authors' understanding of the evo‐devo ofmolluscs. Expand
Uncovering a gene duplication of the photoreceptive protein, opsin, in scallops (Bivalvia: Pectinidae).
TLDR
The identification of two highly divergent Gq-opsin genes in scallops is valuable for future functional investigations and provides a foundation for further study of a morphologically and ecologically diverse clade of bivalves that has been understudied with respect to visual ecology and diversification of opsin. Expand
A neurophylogenetic approach provides new insight to the evolution of Scaphopoda
TLDR
The neuroanatomy of scaphopods demonstrates a highly derived architecture that shares a number of key characters with the cephalopod nervous system, and supports a Scaphopoda + Cep Halopoda grouping. Expand
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 99 REFERENCES
A functional analysis of compound eye evolution.
TLDR
It is shown that the evolution of compound eyes proceeded largely independently along at least two lineages from very primitive ancestors, and possible routes of evolution that can be understood in terms of selection for improved visual function are investigated. Expand
Toward Developing Models to Study the Disease, Ecology, and Evolution of the Eye in Mollusca*
TLDR
An overview of molluscan eye research is provided from these two perspectives: eye researchers whose interests involve the development, physiology, and disease of the eye and malacologists who study the complete organism in its natural environment. Expand
Homoplasy: The Result of Natural Selection, or Evidence of Design Limitations?
  • D. Wake
  • Biology
  • The American Naturalist
  • 1991
TLDR
In order to explain how morphologies evolve in lineages, both functionalist and structuralist approaches are necessary, combined in a context in which phylogenetic hypotheses and their tests are continuously pursued. Expand
Key innovations, convergence, and success: macroevolutionary lessons from plant phylogeny
TLDR
Improvements in understanding of green plant phylogeny are casting new light on the connection between character evolution and diversification, and the need for a more nuanced view is highlighted, which has implications for comparative methods. Expand
Molecular pathways to parallel evolution: I. Gene nexuses and their morphological correlates
TLDR
The question is raised of parallel evolution within the purview of activating and repressing master switches and in regard to the number of levels into which the hierarchies of genic master switches will eventually be resolved. Expand
Pax-6: where to be conserved is not conservative.
  • W. Harris
  • Biology, Medicine
  • Proceedings of the National Academy of Sciences of the United States of America
  • 1997
TLDR
The evolution of eyes, as complex organs, could still be polyphyletic; one of the most compelling cases of convergent evolution: the image-forming eyes of the cephalopod mollusks and those of the vertebrates. Expand
A PHYLOGENETIC TEST FOR ADAPTIVE CONVERGENCE IN ROCK-DWELLING LIZARDS
TLDR
Rock-dwelling lizards exhibited similarities in head depth as a result of both adaptation and exaptation, and the existence of similar advantageous structures among species independently occupying the same environment may not indicate adaptation. Expand
Visual systems, behaviour, and environment in cephalopods
TLDR
The eyes of cephalopods provide a striking example of convergent evolution with those of fishes, and superficially the eyes of the two groups are remarkably similar, however, their development and detailed structure are quite different, and fishes and cep Halopods have no common ancestors which had camera eyes. Expand
Developmental Genetics and Plant Evolution
TLDR
The Evolution of Morphogenetic Complexity in Single-Celled Plants and the Genetic Causes of Phenotypic Evolution are identified. Expand
Process morphology: structural dynamics in development and evolution
Since structure is not completely static, but more or less changing, it appears appropriate to see it dynamically as process. More specifically, each particular structure can be conceived of as aExpand
...
1
2
3
4
5
...