Related Experiment Video
Updated: Jan 10, 2026
17:38
Radioactive in situ Hybridization for Detecting Diverse Gene Expression Patterns in Tissue
Published on: April 27, 2012
16.0K
Functional trait network analysis in birds
Ricardo Santiago De Mendoza1,2, Julieta Carril3, Claudia P Tambussi4
1Departamento de Biología, Facultad de Ciencias Exactas y Naturales (FCEyN), Universidad Nacional de Mar del Plata (UNMdP), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Mar del Plata, Buenos Aires, Argentina. rsdemendoza@gmail.com.
Scientific Reports
|November 25, 2025
Summary
Bird functional traits, like beak and body mass, show varied integration based on lifestyle. Specialization requires independent evolution of these traits for adaptation.
Area of Science:
- Evolutionary biology
- Comparative anatomy
- Functional morphology
Background:
- Functional traits influence organismal fitness.
- Understanding trait interdependence is key to explaining phenotypic evolution.
- Birds exhibit diverse lifestyles and trophic niches, offering a model for studying trait evolution.
Purpose of the Study:
- To compare the interdependence of beak and postcranial functional traits in birds.
- To identify traits driving major phenotypic changes.
- To test for differences in modular organization and integration across different lifestyles and trophic niches.
Main Methods:
- Comparative analysis of functional morphological traits (beak and postcranial).
- Assessment of trait interdependence, modularity, and integration.
- Grouping birds by lifestyle strategies and trophic niches.
Main Results:
- Body mass significantly influences all other functional traits.
- Aquatic birds show lower trait integration, potentially masking distinct morphotypes.
- Vertivore birds exhibit the highest trait integration, reflecting feeding habit constraints.
- Phenotypes are more modular by trophic niche, with unexpected trait distribution patterns.
Conclusions:
- Trait modularity and integration vary significantly across bird lifestyles and trophic niches.
- Independent evolution of functional traits is crucial for specialization.
- Body mass is a primary driver of functional trait variation in birds.
Related Concept Videos
01:21Trait Centrality
161
Trait centrality refers to the degree to which a particular characteristic influences the overall impression of an individual. Some traits exert a disproportionately strong impact on perception, shaping how people interpret other attributes of a person. Solomon Asch first systematically studied this phenomenon in 1946.Asch’s Experiment on Trait CentralityAsch's seminal study demonstrated the centrality of certain traits through a controlled experiment. Participants were presented with a...
161
01:20Trait Theory by Gordon Allport
2.2K
Gordon Allport, often regarded as the father of American personality psychology, developed a theory that emphasized the importance of understanding people in their present lives rather than focusing on their past, as psychoanalysis did. Allport believed that personality should be studied in healthy, well-adjusted individuals rather than those with psychological problems. He was particularly interested in defining traits, which he saw as fundamental mental structures that guide behavior across...
2.2K
01:23Phylogeny
56.6K
Phylogeny is concerned with the evolutionary diversification of organisms or groups of organisms. A group of organisms with a name is called a taxon (singular). Taxa (plural) can span different levels of the evolutionary hierarchy. For instance, the group containing all birds is a taxon (comprising the class Aves), and the group of all species of daisies (the genus Bellis) is a taxon. Phylogenies can likewise include just one genus (i.e., depict species relationships) or span an entire kingdom.
56.6K
01:19X-linked Traits
58.2K
In most mammalian species, females have two X sex chromosomes and males have an X and Y. As a result, mutations on the X chromosome in females may be masked by the presence of a normal allele on the second X. In contrast, a mutation on the X chromosome in males more often causes observable biological defects, as there is no normal X to compensate. Trait variations arising from mutations on the X chromosome are called “X-linked”.
58.2K
01:54Convergent Evolution
31.3K
Evolution shapes the features of organisms over time, ensuring that they are suited for the environments in which they live. Sometimes, selection pressure leads to the rise of similar but unrelated adaptations in organisms with no recent common ancestors, a process known as convergent evolution.
31.3K
01:20Mate Choice
11.5K
Mate choice—the decision about whom to mate with—is a type of natural selection, since animals must reproduce to pass down their genes. Mate choice is also called intersexual selection because the behavior occurs between the sexes.
11.5K