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Effects of Phenotypic Robustness on Adaptive Evolutionary Dynamics
Springer Science and Business Media LLC - Tập 47 - Trang 233-239 - 2020
Emanuele Rigato, Giuseppe Fusco
Theoretical and experimental studies have provided evidence for a positive role of phenotype resistance to genetic mutation in enhancing long-term adaptation to novel environments. With the aim of contributing to an understanding of the origin and evolution of phenotypic robustness to genetic mutations in organismal systems, we adopted a theoretical approach, elaborating on a classical mathematica...... hiện toàn bộ
Integration, Disintegration, and Self-Similarity: Characterizing the Scales of Shape Variation in Landmark Data
Springer Science and Business Media LLC - Tập 42 Số 4 - Trang 395-426 - 2015
Fred L. Bookstein
Fruit Ripening Signals and Cues in a Madagascan Dry Forest: Haptic Indicators Reliably Indicate Fruit Ripeness to Dichromatic Lemurs
Springer Science and Business Media LLC - - 2016
Kim Valenta, Chelsea N. Miller, Spencer K. Monckton, Amanda D. Melin, Shawn M. Lehman, Sarah A. Styler, Derek A. Jackson, Colin A. Chapman, Michael J. Lawes
Fruit ripeness can be indicated through changes in chromaticity, luminance, odor, hardness, and size to attract seed dispersing animals. We quantified these attributes for both ripe and unripe fruits of 31 lemur-dispersed plant species in Ankarafantsika National Park, a tropical dry forest in northwestern Madagascar. We used spectroscopy, gas-chromatography mass-spectrometry, and a modified force ...... hiện toàn bộ
The Functional and Allometric Implications of Hipbone Trabecular Microarchitecture in a Sample of Eutherian and Metatherian Mammals
Springer Science and Business Media LLC - Tập 48 - Trang 346-365 - 2021
Nicole M. Webb
The pelvis plays an active role in weight bearing and countering the ground reaction forces incurred by the hindlimbs thus making it a critical component of the locomotor skeleton. Accordingly, this anatomical region is theoretically ideal for inferring locomotor behavior from both external skeletal morphology and trabecular microarchitecture, with the latter possibly offering nuanced insights int...... hiện toàn bộ
The Occasional Perils of Reflection (Across the Midline; in Geometric Morphometrics)
Springer Science and Business Media LLC - Tập 47 - Trang 164-174 - 2020
David C. Katz
Manual landmark data collection on large samples takes a long time. Several options exist to speed the process, though each introduces problems or raises concerns of its own. For bilaterally symmetric structures (e.g., crania), some recent papers recommend limiting landmark collection to one side and the anatomical midline, then approximating the true bilateral configuration by merging the hemi-fo...... hiện toàn bộ
Shape and Size Variation in Elapid Snake Fangs and the Effects of Phylogeny and Diet
Springer Science and Business Media LLC - Tập 50 - Trang 476-487 - 2023
Alessandro Palci, Michael S. Y. Lee, Jenna M. Crowe-Riddell, Emma Sherratt
Recent studies have found correlations between the shape of snake teeth/fangs and diet. These studies were done at a very broad phylogenetic scale, making it desirable to test if correlations are still detectable at a narrower evolutionary scale, specifically within the family Elapidae. To this end, we studied fang shape in a dense selection of elapids representing most genera worldwide (74%). We ...... hiện toàn bộ
Life With or Without Names
Springer Science and Business Media LLC - Tập 43 - Trang 582-595 - 2016
M. Casiraghi, A. Galimberti, A. Sandionigi, A. Bruno, M. Labra
The terms ‘life’, ‘species’ and ‘individuals’ are key concepts in biology. However, theoretical and practical concerns are directly associated with definitions of these terms and their use in researchers’ work. Although the practical implications of employing definition of ‘species’ and ‘individuals’ are often clear, it is surprising how most biologists work in their field of study without adherin...... hiện toàn bộ
Quantitative Genetics and Evolution of Head Shape in Plethodon Salamanders
Springer Science and Business Media LLC - Tập 38 - Trang 278-286 - 2011
Dean C. Adams
The evolution of morphological diversity via selection requires that morphological traits display significant heritable genetic variation. In Plethodon salamanders, considerable evidence suggests that head shape evolves in response to selection from interspecific competition, yet the genetic underpinnings of head shape have not been quantitatively examined. Here I used geometric morphometrics and ...... hiện toàn bộ
Linear Discrimination, Ordination, and the Visualization of Selection Gradients in Modern Morphometrics
Springer Science and Business Media LLC - Tập 38 Số 1 - Trang 100-114 - 2011
Philipp Mitterœcker, Fred L. Bookstein
Walking on Kendall’s Shape Space: Understanding Shape Spaces and Their Coordinate Systems
Springer Science and Business Media LLC - Tập 47 - Trang 334-352 - 2020
Christian Peter Klingenberg
More and more analyses of biological shapes are using the techniques of geometric morphometrics based on configurations of landmarks in two or three dimensions. A fundamental concept at the core of these analyses is Kendall’s shape space and local approximations to it by shape tangent spaces. Kendall’s shape space is complex because it is a curved surface and, for configurations with more than thr...... hiện toàn bộ
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