Results 41 to 50 of about 36,639 (306)

Allometry and sexual dimorphism of the Neotropical freshwater anomuran Aegla marginata Bond-Buckup & Buckup, 1994 (Crustacea, Anomura, Aeglidae)

Nauplius
This study analyzes ontogenetic allometry in Aegla marginata Bond-Buckup & Buckup, 1994, a freshwater crustacean, in order to evaluate the growth pattern and the presence of sexual dimorphism, using a multivariate approach.
Alexandre Ribeiro da Silva, Gabriel de Paula Paciencia, Pitágoras Conceição Bispo, Antonio Leão Castilho   +3 more
doaj   +1 more source

Uncertainty of Forest Biomass Estimates in North Temperate Forests Due to Allometry: Implications for Remote Sensing [PDF]

, 2013
Estimates of above ground biomass density in forests are crucial for refining global climate models and understanding climate change. Although data from field studies can be aggregated to estimate carbon stocks on global scales, the sparsity of such ...
Ahmed, Anthes, Atjay, Avery, Baskerville, Blackard, Buonaccorsi, Chave, Crow, Crow, DeFries, Fisher, Freedman, Frieswyk, Gertner, Hall, Hocker, Honer, Jenkins, Jenkins, Jokela, Kathleen Bergen, Ker, Ker, Kindermann, Lambert, Mandelbrot, Niklas, Osawa, Parresol, Pastor, Pastor, Paul Siqueira, Perala, Phillips, Razi Ahmed, Rosenqvist, Schmitt, Scott Hensley, Smith, Stout, Ter-Mikaelian, Toan, Tritton, West, Whittaker, Wiant, Young, Zeide   +48 more
core   +3 more sources

Allometry of brain metabolism [PDF]

Proceedings of the National Academy of Sciences, 2013
Allometry refers to biological scaling relationships (1). With regard to metabolic rate, the earliest allometric studies demonstrated a complex inverse relationship between body size and resting metabolic rate (2⇓–4). Subsequent studies have focused, without much success, on describing the cellular mechanisms of this relationship.
openaire   +2 more sources

Male mate choice scales female ornament allometry in a cichlid fish

BMC Evolutionary Biology, 2010
Background Studies addressing the adaptive significance of female ornamentation have gained ground recently. However, the expression of female ornaments in relation to body size, known as trait allometry, still remains unexplored.
Kullmann Harald, Herder Fabian, Bakker Theo CM, Baldauf Sebastian A, Thünken Timo   +4 more
doaj   +1 more source

Sensory adaptations reshaped intrinsic factors underlying morphological diversification in bats

BMC Biology, 2021
Background Morphological evolution may be impacted by both intrinsic (developmental, constructional, physiological) and extrinsic (ecological opportunity and release) factors, but can intrinsic factors be altered by adaptive evolution and, if so, do they
J. H. Arbour, A. A. Curtis, S. E. Santana   +2 more
doaj   +1 more source

A comparison of traditional and geometric morphometric techniques for the study of basicranial morphology in horses: a case study of the Araucanian horse from Colombia [PDF]

, 2020
Skull size and shape have been widely used to study domestic animal populations and breeds. Although several techniques have been proposed to quantify cranial form, few attempts have been made to compare the results obtained by di erent techniques. While
Bentez-Molano, Jannet, Crosby-Granados, René, Parés Casanova, Pere-Miquel, Salamanca-Carreño, Arcesio   +3 more
core   +2 more sources

Nicotinamide and Pyridoxine Supplementation Enhances Muscle Stem Cell Activity and Muscle Regeneration in Humans: A Randomized Placebo‐Controlled Clinical Trial of High Force Eccentric Contraction Recovery in Healthy Young Men

Advanced Science, EarlyView.
In a randomized clinical trial, we test the potential of combined nicotinamide (NAM) and pyridoxine (PN) to improve muscle recovery through muscle stem cell (MuSC) activity. Daily oral NAM and PN supplementation after high intensity muscle contractions enhances MuSC activation and differentiation, and accelerates muscle regeneration, providing new ...
Grith Højfeldt, Joris Michaud, Ann Damgaard, Karoline Karlog, Eugenia Migliavacca, Sonia Karaz, Elham Pazirandeh‐Micol, Odd E. Johansen, Leonidas G. Karagounis, Bjørk W. Helge, William Hagemann, Michael Kjaer, Jerome N. Feige, Pascal Stuelsatz, Abigail L. Mackey   +14 more
wiley   +1 more source

Evolution of sexual dimorphism of wing shape in the Drosophila melanogaster subgroup

BMC Evolutionary Biology, 2009
Background Sexual dimorphism of body size has been the subject of numerous studies, but few have examined sexual shape dimorphism (SShD) and its evolution.
Baylac Michel, Gidaszewski Nelly A, Klingenberg Christian   +2 more
doaj   +1 more source

Power laws of complex systems from Extreme physical information

, 2005
Many complex systems obey allometric, or power, laws y=Yx^{a}. Here y is the measured value of some system attribute a, Y is a constant, and x is a stochastic variable. Remarkably, for many living systems the exponent a is limited to values +or- n/4, n=0,
A. Stuart, B. R. Frieden, B. R. Frieden, B. R. Frieden, B. Roy Frieden, G. A. Korn, J. T. Bonner, K. Schmidt-Nielsen, M. J. Reiss, R. A. Fisher, R. A. Gatenby, R. A. Gatenby, R. Badii, R. V. Churchill, Robert A. Gatenby, S. Luo, T. A. McMahon, W. A. Calder, W. J. Jungers   +18 more
core   +2 more sources

Light-related variation in sapling architecture of three shade-tolerant tree species of the Mexican rain forest [PDF]

, 2008
The crown architecture of three shade-tolerant tree species (two subcanopy and one mid-canopy) was analyzed in relation to the light regime of the forest understorey.
Bongers, F., Martinez-Sanchez, J.L., Meave, J.   +2 more
core   +2 more sources