Results 21 to 30 of about 43,801 (263)

The role of changes in environmental quality in multitrait plastic responses to environmental and social change in the model microalga Chlamydomonas reinhardtii

open access: yesEcology and Evolution, 2021
Intraspecific variation plays a key role in species' responses to environmental change; however, little is known about the role of changes in environmental quality (the population growth rate an environment supports) on intraspecific trait variation ...
Ignacio J. Melero‐Jiménez   +2 more
doaj   +1 more source

Structure analysis of the ribosomal intergenic spacer region of Phaeoacremonium italicum as a study model

open access: yesPhytopathologia Mediterranea, 2021
Increasing recognition of novel Phaeoacremonium species, and their recent taxonomic reassignment through phylogeny based on the β-tubulin and actin genes, have highlighted the presence of paraphyly, intraspecific variation, and incongruence of some ...
Meriem Laidani   +3 more
doaj   +1 more source

Intraspecific variation in sperm size characters [PDF]

open access: yesHeredity, 1998
Interspecific variation in quantitative characters of sperm is considerable and can sometimes be related to aspects of sperm competition. In contrast, continuous intraspecific variation is often ignored; for example, many studies concentrate on measuring a species-typical sperm size.
openaire   +3 more sources

DNA barcoding works in practice but not in (neutral) theory. [PDF]

open access: yesPLoS ONE, 2014
BACKGROUND: DNA barcode differences within animal species are usually much less than differences among species, making it generally straightforward to match unknowns to a reference library.
Mark Y Stoeckle, David S Thaler
doaj   +1 more source

Highly Evolvable: Investigating Interspecific and Intraspecific Venom Variation in Taipans (Oxyuranus spp.) and Brown Snakes (Pseudonaja spp.)

open access: yesToxins, 2023
Snake venoms are complex mixtures of toxins that differ on interspecific (between species) and intraspecific (within species) levels. Whether venom variation within a group of closely related species is explained by the presence, absence and/or relative ...
Jory van Thiel   +8 more
doaj   +1 more source

Intraspecific and interspecific functions in regulating vegetation biomass under nutrient addition in semiarid grasslands

open access: yesGlobal Ecology and Conservation
Long-term soil erosion causes widespread nitrogen (N) and phosphorus (P) limitation on the Loess Plateau. The response of community biomass to N and P addition is tightly linked to interspecific and intraspecific variations in community level traits.
Caiwen Yang   +7 more
doaj   +1 more source

Natural epigenetic polymorphisms lead to intraspecific variation in Arabidopsis gene imprinting

open access: yeseLife, 2014
Imprinted gene expression occurs during seed development in plants and is associated with differential DNA methylation of parental alleles, particularly at proximal transposable elements (TEs).
Daniela Pignatta   +5 more
doaj   +1 more source

Intraspecific Variation Patterns of the Caudal Complex in Extant and Fossil Teleosts, with Comments on Implications into Taxonomy and Systematics: a Case Study. [PDF]

open access: yesAnuário do Instituto de Geociências, 2007
Comparative morphology remains as afundamental support of the interrelationshiphypotheses of living and fossil fish taxa. Theconceptualization of the characters is only possibleafter the comparative analysis that shows themorphological variation of ...
Maria Eduarda de Castro Leal   +2 more
doaj  

Coordinated Architectural and Chemical Reinforcement in the Crushing Mandible of a Soldier Termite

open access: yesAdvanced Functional Materials, EarlyView.
The crushing mandible of a soldier termite withstands substantial biting loads despite lacking mineral. Its cuticle is partitioned: convex teeth pair hardness and zinc enrichment with aligned chitin fibers for contact durability, while stiffer concave regions between teeth carry bending loads.
Andrew Tran Nguyen   +16 more
wiley   +1 more source

Assessing Intraspecific Variation of Tree Species Based on Sentinel-2 Vegetation Indices Across Space and Time

open access: yesRemote Sensing
Forest ecosystems are vital for biodiversity, climate regulation, and ecosystem services. Their resilience depends not only on species diversity but also on intraspecific variation—the genetic and phenotypic differences within species—which underpins ...
Tiziana L. Koch   +7 more
doaj   +1 more source

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