Results 71 to 80 of about 45,108 (330)

Allometry of Workers of the Fire Ant, Solenopsis invicta [PDF]

open access: yes, 2003
The relationship between worker body size and the shape of their body parts was explored in the polymorphic ant, Solenopsis invicta. The data consisted of 20 measurements of body parts as well as sums of some of these measurements.
Mikheyev, Alexander S.   +2 more
core   +2 more sources

An allometry-based approach for understanding forest structure, predicting tree-size distribution and assessing the degree of disturbance [PDF]

open access: yes, 2012
Tree-size distribution is one of the most investigated subjects in plant population biology. The forestry literature reports that tree-size distribution trajectories vary across different stands and/or species, while the metabolic scaling theory suggests
Anfodillo, Tommaso   +5 more
core   +2 more sources

Root anatomical traits contribute to deeper rooting of maize under compacted field conditions [PDF]

open access: yes, 2020
© The Author(s) 2020. To better understand the role of root anatomy in regulating plant adaptation to soil mechanical impedance, 12 maize lines were evaluated in two soils with and without compaction treatments under field conditions.
Bengough, A. Glyn   +4 more
core   +4 more sources

Multivariate Allometry and Australopithecine Variation [PDF]

open access: yesEvolution, 1976
Allometry is differential relative growth, or simply a change in shape with increasing size. The concept of allometry is invoked by some students to explain the variation among early hominid fossils which others attribute to taxonomic variation. Brace (1963) and most recently Wolpoff (1973a) explain morphological shape differences between the "robust ...
openaire   +2 more sources

Comparative and functional anatomy of masticatory muscles and bite force in opossums (Didelphimorphia, Didelphidae)

open access: yesThe Anatomical Record, EarlyView.
We describe the functional anatomy of masticatory muscles in nine opossums, finding a generalized anatomical pattern with differences related to skull morphology. Variation in quantitative myological data and estimated bite force was mostly related to size, and the increase in bite force supports dietary diversification associated with size increase ...
Juann A. F. H. Abreu, Diego Astúa
wiley   +1 more source

Morphometrics of Pseudorasbora parva (Schlegel, 1842) (Cyprinidae: Gobioninae), a species introduced into the Polish waters [PDF]

open access: yesActa Ichthyologica et Piscatoria, 1998
A morphological analysis of 11 meristic and 25 plastic characters, based on 72 specimens of Pseudorasbora parva from carp ponds in the region of Ruda Sułowska (Barycz R. system, SW Poland).
J. Kotusz, A. Witkowski
doaj   +3 more sources

Ownership-dependent mating tactics of minor males of the beetle Librodor japonicus (Nitidulidae) with intra-sexual dimorphism of mandibles [PDF]

open access: yes, 2007
Intra-sexual dimorphism is found in the weapons of many male beetles. Different behavioral tactics to access females between major and minor males, which adopt fighting and alternative tactics, respectively, are thought to maintain the male dimorphism ...
AP Bridge   +33 more
core   +1 more source

Why does allometry evolve so slowly?

open access: yesIntegrative and Comparative Biology, 2019
Morphological allometry is striking due to its evolutionary conservatism, making it an example of a certain sort of evolutionary stasis. Organisms that vary in size, whether for developmental, environmental or evolutionary reasons, adopt shapes that are ...
D. Houle   +3 more
semanticscholar   +1 more source

Implications of allometry [PDF]

open access: yesProceedings of the National Academy of Sciences, 2011
The thoughtful paper by Asner et al. (1) needs clarification. A major conclusion is that light detection and ranging (LiDAR)-based sampling combined with an allometric model of tree biomass that uses height measurements is significantly better than simply using the Intergovernmental Panel on Climate Change Tier 1 prescribed forest carbon values (2) for
David L. Skole   +2 more
openaire   +1 more source

Functional models from limited data: A parametric and multimodal approach to anatomy and 3D kinematics of feeding in basking sharks (Cetorhinus maximus)

open access: yesThe Anatomical Record, EarlyView.
Abstract Basking sharks, Cetorhinus maximus (Gunnerus, Brugden [Squalus maximus], Det Kongelige Norske Videnskabers Selskabs Skrifter, 1765, vol. 3, pp. 33–49), feed by gaping their mouths and gill slits, greatly reorienting their cranial skeletons to filter food from water.
Tairan Li   +12 more
wiley   +1 more source

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