Results 1 to 10 of about 133,268 (190)

Does intraspecific variation in juvenile Late Cretaceous ammonoids correlate with their systematic position, longevity and paleogeography? [PDF]

Swiss Journal of Palaeontology
Phenotypic intraspecific variation of organisms is essential for evolution and, thus, has the potential to provide crucial insights into evolutionary dynamics.
Amane Tajika, Takahiro Iida, Ryoji Wani, Neil H. Landman, Kenji Ikuno, Christian Klug   +5 more
doaj   +2 more sources

Spatial heterogeneity of soil factors enhances intraspecific variation in plant functional traits in a desert ecosystem [PDF]

Frontiers in Plant Science
IntroductionFunctional traits of desert plants exhibit remarkable responsiveness, adaptability and plasticity to environmental heterogeneity.MethodsIn this study, we measured six crucial plant functional traits (leaf carbon, leaf nitrogen, leaf ...
Yong-chang Wang, Yong-chang Wang, Yong-chang Wang, Xue-ni Zhang, Xue-ni Zhang, Xue-ni Zhang, Ji-fen Yang, Ji-fen Yang, Ji-fen Yang, Jing-ye Tian, Jing-ye Tian, Jing-ye Tian, Dan-hong Song, Dan-hong Song, Dan-hong Song, Xiao-hui Li, Xiao-hui Li, Xiao-hui Li, Shuang-fu Zhou, Shuang-fu Zhou, Shuang-fu Zhou   +20 more
doaj   +2 more sources

Intraspecific Variation in Parental Care May Reflect Variation in Parental Quality. [PDF]

Ecol Evol
ABSTRACTThe existence of life‐history trade‐offs is a fundamental assumption of evolutionary biology and behavioural ecology, yet empirical studies have found mixed evidence for this. Such trade‐offs are expected when individuals vary in how they allocate their limited resource budgets between different life‐history functions (variation in resource ...
Pilakouta N, Hanlon EJH, Smiseth PT.
europepmc   +6 more sources

A role for gene duplication and natural variation of gene expression in the evolution of metabolism. [PDF]

PLoS ONE, 2008
Most eukaryotic genomes have undergone whole genome duplications during their evolutionary history. Recent studies have shown that the function of these duplicated genes can diverge from the ancestral gene via neo- or sub-functionalization within single ...
Daniel J Kliebenstein
doaj   +1 more source

Intraspecific morphometric variation in myxosporeans [PDF]

Folia Parasitologica, 2016
Morphometric data from spores of ten myxosporean species were statistically analysed to explore myxosporean intraspecific variation in measurements when obtained from a sample from: (1) the same plasmodium, (2) different plasmodia from the same host and (3) different host individuals and localities.
Yanhua, Zhai, Christopher M, Whipps, Zemao, Gu, Qingxiang, Guo, Zizhen, Wu, Hongmei, Wang, Yang, Liu   +6 more
openaire   +2 more sources

Strong intraspecific trait variation in a tropical dominant tree species along an elevational gradient

Plant Diversity, 2020
Functional trait variation of plant species includes both inter- and intraspecific variation; however, trait-based plant ecology generally considers only interspecific variation while ignoring intraspecific variation.
Wumei Xu, Kyle W. Tomlinson, Jie Li
doaj   +1 more source

The relative contribution of intraspecific variation and species turnover to the community-level foliar stoichiometric characteristics in different soil moisture and salinity habitats.

PLoS ONE, 2021
BackgroundTrait-based approaches have been used to demonstrate the responses of plant functional traits to environmental change may manifest both among- and/or within-species.
Yelike Tusifujiang, Xueni Zhang, Lu Gong
doaj   +1 more source

Intraspecific nuclear DNA variation in Drosophila [PDF]

Molecular Biology and Evolution, 1996
We have summarized and analyzed all available nuclear DNA sequence polymorphism studies for three species of Drosophila, D. melanogaster (24 loci), D. simulans (12 loci), and D. pseudoobscura (5 loci). Our major findings are: (1) The average nucleotide heterozygosity ranges from about 0.4% to 2% depending upon species and function of the region, i.e ...
E N, Moriyama, J R, Powell
openaire   +2 more sources

Widespread variation in salt tolerance within freshwater zooplankton species reduces the predictability of community‐level salt tolerance

Limnology and Oceanography Letters, 2023
The salinization of freshwaters is a global threat to aquatic biodiversity. We quantified variation in chloride (Cl−) tolerance of 19 freshwater zooplankton species in four countries to answer three questions: (1) How much variation in Cl− tolerance is ...
Shelley E. Arnott, Vincent Fugère, Celia C. Symons, Stephanie J. Melles, Beatrix E. Beisner, Miguel Cañedo‐Argüelles, Marie‐Pier Hébert, Jennifer A. Brentrup, Amy L. Downing, Derek K. Gray, Danielle Greco, William D. Hintz, Alexandra McClymont, Rick A. Relyea, James A. Rusak, Catherine L. Searle, Louis Astorg, Henry K. Baker, Zeynep Ersoy, Carmen Espinosa, Jaclyn M. Franceschini, Angelina T. Giorgio, Norman Göbeler, Emily Hassal, Mercedes Huynh, Samuel Hylander, Kacie L. Jonasen, Andrea Kirkwood, Silke Langenheder, Ola Langvall, Hjalmar Laudon, Lovisa Lind, Maria Lundgren, Emma R. Moffett, Lorenzo Proia, Matthew S. Schuler, Jonathan B. Shurin, Christopher F. Steiner, Maren Striebel, Simon Thibodeau, Pablo Urrutia Cordero, Lidia Vendrell‐Puigmitja, Gesa A. Weyhenmeyer, Alison M. Derry   +43 more
doaj   +1 more source

Intraspecific variation in the cochleae of harbour porpoises (Phocoena phocoena) and its implications for comparative studies across odontocetes [PDF]

PeerJ, 2020
In morphological traits, variation within species is generally considered to be lower than variation among species, although this assumption is rarely tested. This is particularly important in fields like palaeontology, where it is common to use a single
Maria Clara Iruzun Martins, Travis Park, Rachel Racicot, Natalie Cooper   +3 more
doaj   +2 more sources