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exaptation

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Journal Article
Journal: Paleobiology
Published: 01 August 2021
Paleobiology (2021) 47 (3): 503–516.
... infold (present in Thecalia ). The byssal gape is present in the Cardiobyssata clade (Carditamerinae + (Carditinae + Thecaliinae)), and we discuss whether the incubatory chamber could be the result of an exaptation event, and the possible evolutionary pathways implied. According to the present evidence...
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Journal Article
Published: 01 July 2016
Journal of Paleontology (2016) 90 (4): 689–720.
... by exaptation of oral surface plating and, commonly, other thecal plating. A pseudo-tegmen is an exaptation of aboral cup plates (i.e., radial plates). Tegmens or pseudo-tegmens evolved in all major crinoid clades at least once as an exaptation of oral surface plating. Tegmens evolved iteratively both between...
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Journal Article
Journal: Paleobiology
Published: 01 January 2015
Paleobiology (2015) 41 (1): 187–201.
...–Paleogene. Moreover, rib strength of North American Astarte did not change through this time interval. Thus, the ribs considered here are a likely exaptation to drilling given their effectiveness at deterring drilling predation on bivalves with moderate ribs. 28 07 2014 Copyright © 2015...
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Journal Article
Journal: Paleobiology
Published: 01 January 2005
Paleobiology (2005) 31 (2_Suppl): 1–16.
... including disparity, causation, or bookkeeping of genes, adaptation, and exaptation, as well as evolutionary contingency at the genomic level—issues at the heart of some of Stephen Jay Gould's intellectual battlegrounds. Interestingly, where relevant, the genomic perspective is consistent with Gould's...
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Journal Article
Journal: Paleobiology
Published: 01 January 1982
Paleobiology (1982) 8 (1): 4–15.
Journal Article
Journal: Paleobiology
Published: 01 January 2005
Paleobiology (2005) 31 (2_Suppl): 27–35.
...Adolf Seilacher Abstract Of all sessile filtrators, only some species of acorn barnacles managed to permanently settle on whales. Their key exaptation was probably a kind of biochemical cleaning process, which could be modified to penetrate into the host's dead cutis. Anchorage was further...
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Figure  3. Phylogenetic patterns extrapolated from different models of evol...
Published: 01 March 2006
. A, Demand for function and trait coincide; the trait is an adaptation. B, Demand for function appears much before trait; the trait is irrelevant to the task/ environment or an adaptation. C, Demand for function appears after trait; the trait is an exaptation. D, Demand for function occurs after trait
Journal Article
Journal: Paleobiology
Published: 21 March 2016
Paleobiology (2016) 42 (4): 612–623.
...Andrés I. Lires; Ignacio M. Soto; Raúl O. Gómez Abstract Understanding the evolution of a Bauplan starts with discriminating phylogenetic signal from adaptation and the latter from exaptation in the observed biodiversity. Whether traits have predated, accompanied, or followed evolution...
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Journal Article
Journal: Paleobiology
Published: 01 January 1999
Paleobiology (1999) 25 (1): 75–87.
... become clearer when phenomena like wanton extinction are made explicit; exaptive radiations are exposed as an alternative to adaptive radiations; the possible non-adaptive nature of deterministic chaos becomes sensible; the nonrandomness of community-assembly is put into question; parallel taxonomies...
Image
Possible evolutionary pathways. A, Primary adaptation stage, with byssal th...
Published: 01 August 2021
Figure 5. Possible evolutionary pathways. A, Primary adaptation stage, with byssal threads traversing the byssal gape, represented in Cardita species. B, Primary exaptation stage, with eggs or juveniles attached to byssal gape. At this stage, both functions (byssal passage and brooding) could
Journal Article
Journal: Paleobiology
Published: 01 January 2005
Paleobiology (2005) 31 (2_Suppl): 77–93.
... has implications for comparative methods. They also bear on issues central to Stephen Jay Gould's vision of macroevolution, including exaptation and evolutionary recurrence in relation to constraint and the repeatability of evolution. 07 09 2004 The Paleontological Society 2005...
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Journal Article
Published: 01 April 2000
Bulletin of the Seismological Society of America (2000) 90 (2): 312–323.
... that although many organisms may be able to detect an impending seismic event, no plausible scenario has been presented yet through which accounts for the evolution of such behaviors. The evolutionary mechanism of exaptation can do this in a two-step process. The first step is to evolve a vibration-triggered...
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Journal Article
Journal: Paleobiology
Published: 01 January 2005
Paleobiology (2005) 31 (2_Suppl): 113–121.
... issues are raised by Lloyd and Gould's (1993) and Gould's (2002) emergent fitness approach: the concept of adaptation or exaptation and its relationship to species selection, and how to treat characters such as species-level variability. As defined by Gould and Vrba (1982) adaptations...
Journal Article
Journal: Paleobiology
Published: 01 January 2001
Paleobiology (2001) 27 (2): 226–240.
...) proposed that the term adaptation be retained for the original-use concept, but that this be distinguished from the co-opted or current-use concept by applying the term exaptation to the latter. It is important to note that historical data are necessary for the correct identification of both adaptations...
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Journal Article
Journal: Paleobiology
Published: 01 August 2021
Paleobiology (2021) 47 (3): f1–f4.
... chamber of marsupial carditids (Bivalvia: Carditidae: Thecaliinae) as an exaptation Damián Eduardo Pérez and Ignacio María Soto Absolute axial growth and trunk segmentation in the early Cambrian trilobite Oryctocarella duyunensis Tao Dai, Nigel C. Hughes, Xingliang Zhang and Giuseppe Fusco Seasonal...
Journal Article
Published: 01 November 2020
Journal of Paleontology (2020) 94 (6): 1076–1081.
... the intricacies of Coronula involves exaptation, which is a process wherein features acquire functions for which they were not originally selected. Seilacher ( 2005 ) assessed the mechanism by which Coronula attached to cetaceans, and concluded that embedding within the whale skin was achieved by a narrow...
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Journal Article
Journal: Paleobiology
Published: 30 May 2018
Paleobiology (2018) 44 (3): 444–459.
... to a feature under selection. Additionally, an adaptive explanation for the origin of a feature (as distinct from its current function , which may be adaptive or exaptive; sensu Gould and Vrba 1982 ) would disprove the hypothesis that the feature arose as a spandrel that was not itself selected...
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Journal Article
Published: 01 July 2000
Geological Magazine (2000) 137 (4): 478–479.
... reconstruction (both molecular and morphological), exaptations, global climate change and correlated progression. Although Zimmer obviously prefers some ideas to others (notably he seems to support the morphologists’ view of whale relationships, rather than that of the molecular phylogeneticists), the text...
Journal Article
Published: 01 September 2021
Journal of Paleontology (2021) 95 (5): 974–993.
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Figure  1. Evolutionary changes in eukaryotic genomes over time. Functional...
Published: 01 January 2005
nuons, including alternative exons and novel regulatory regions for spatiotemporal expression of genes, can be exapted (blue or magenta boxes with asterisks), sometimes replacing ancestral sequences (nuon A with nuon a, in the lineage leading to the upper left lineage). At the level of the genome