Evolutionary Developmental Biology

Laubichler, Manfred D.

doi:10.1002/9783527619719.ch5

Cited by 15 publications

(5 citation statements)

References 130 publications

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“…The current data provide insights into the adult morphology among the taxa examined. Our results appear to reflect evolutionary and developmental (Evo‐Devo) influences of behavior on talo‐crural form, as well as, the environmental influences which precipitate them (Retallack, ; Muller, ). This study centered on the articular component of talar joint morphology, as did our previous study of the tibia (Turley et al, ).…”

Section: Discussionmentioning

confidence: 56%

“…These gross categories provided a lens, as in the tibia, to assess their influence on talar shape and presentation, as well as, both their interrelation and lack there of. Likewise, an evolutionary and developmental (Evo‐Devo) influence, an epigenetic or genetic signal, may be evidenced, if a behavioral effect is observed in talo‐crural form (Muller, ; Turley et al, ). Finally, the differences and similarities of talar shape among the individual taxa are documented (Harcourt‐Smith, ; Turley et al, ).…”

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confidence: 99%

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The Shape and Presentation of the Catarrhine Talus: A Geometric Morphometric Analysis

Turley

Frost

2013

The Anatomical Record

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The distal component of the talo-crural joint, the talus, was compared, using geometric morphometrics, in 219 specimens from nine extant taxa to identify differences in shape and the factors influencing them. The specimens were laser scanned, digitally reconstructed, and landmarked. The whole talus, proximal and distal articular facet subgroups were analyzed using Generalized Procrustes analysis, linear regression, principal component analysis, analysis of percent variance, dot-product vector analysis, and pair-wise permutation tests to evaluate shape, and were visualized by TPS deformation of an exemplar surface. Significant percentages of shape variation among taxa were due to body mass, talar size, superfamily, and substrate preference. Shape and presentational morphology associated with these factors were documented, along with the similarities and differences among individual taxa. Nearly all taxa were significantly different in overall, proximal and distal shapes. The most important factors influencing whole talar shape were log centroid size and substrate preference. Substrate preference was also the most important factor defining proximal articular morphology and unrelated to other factor such as mass, while distal articular morphology was influenced by superfamily (head angle and shape). Results demonstrated that substrate preference and superfamily significantly influenced distal presentation, while substrate preference influenced proximal articular shape. Anat Rec, 296:877-890, 2013. V C 2013 Wiley Periodicals, Inc.

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Section: Discussionmentioning

confidence: 56%

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confidence: 99%

The Shape and Presentation of the Catarrhine Talus: A Geometric Morphometric Analysis

Turley

Frost

2013

The Anatomical Record

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“…We emphasize, however, that any model for the origination and development of the vertebrate limb must address the central requirement of evolutionary developmental biology: accounting at the same time for the continued generative stability of a structure, or organized complex of structures (homology), and for the novelties that deviate from it (Müller, 2005). We suggest that the epigenetic framework presented here, drawing on the self-organizing properties and biomechanical responsivity of limb bud mesenchymal tissue, and combining it with the reasonable assumption that the genetic circuitry involved in limb development in contemporary vertebrates was recruited in stages over the course of evolution, accomplishes these goals more successfully than informational coordinate systembased models.…”

Section: Discussionmentioning

confidence: 99%

Origination and innovation in the vertebrate limb skeleton: an epigenetic perspective

Newman

Müller

2005

J Exp Zool Pt B

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The vertebrate limb has provided evolutionary and developmental biologists with grist for theory and experiment for at least a century. Its most salient features are its pattern of discrete skeletal elements, the general proximodistal increase in element number as development proceeds, and the individualization of size and shape of the elements in line with functional requirements. Despite increased knowledge of molecular changes during limb development, however, the mechanisms for origination and innovation of the vertebrate limb pattern are still uncertain. We suggest that the bauplan of the limb is based on an interplay of genetic and epigenetic processes; in particular, the self-organizing properties of precartilage mesenchymal tissue are proposed to provide the basis for its ability to generate regularly spaced nodules and rods of cartilage. We provide an experimentally based "core" set of cellular and molecular processes in limb mesenchyme that, under realistic conditions, exhibit the requisite self-organizing behavior for pattern origination. We describe simulations that show that under limb bud-like geometries the core mechanism gives rise to skeletons with authentic proximodistal spatiotemporal organization. Finally, we propose that evolution refines skeletal templates generated by this process by mobilizing accessory molecular and biomechanical regulatory processes to shape the developing limb and its individual elements. Morphological innovation may take place when such modulatory processes exceed a threshold defined by the dynamics of the skeletogenic system and elements are added or lost.

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“…This involves a huge amount of computational modeling and data mining, aided by hypotheses and concepts about relevant connections and links between di¤erent data sets. This theoretical biology aspect of EvoDevo will become an increasingly important tool in the future development of the discipline (Mü ller, 2005;Laubichler et al, 2005).…”

Section: Perspectives For Evodevo Modelingmentioning

confidence: 99%