Related Experiment Video
Updated: Jul 1, 2026
08:16
Experimental Protocol for Manipulating Plant-induced Soil Heterogeneity
Published on: March 13, 2014
Ecological fitting by phenotypically flexible genotypes: implications for species associations, community assembly
Salvatore J Agosta1, Jeffrey A Klemens1
1Department of Biology, University of Pennsylvania, Philadelphia, PA 19014, USA.
Ecology Letters
|September 10, 2008
Summary
Ecological fitting explains how organisms adapt to new environments and resources using their existing traits. This process, driven by phenotypic plasticity, can lead to evolutionary diversity or stasis.
Area of Science:
- Ecology
- Evolutionary Biology
Background:
- Ecological fitting describes organismal adaptation to novel conditions via pre-existing traits.
- Phenotypic plasticity, trait evolution, and phylogenetic conservatism are key mechanisms.
- The concept relates to exaptation and the evolutionary role of plasticity.
Purpose of the Study:
- Review the concept of ecological fitting and its evolutionary implications.
- Propose specific mechanisms driving ecological fitting.
- Operationalize ecological fitting with definitions and a conceptual model.
- Illustrate ecological fitting in colonization and novel association contexts.
- Discuss its dual role in promoting diversity or stasis.
Main Methods:
- Literature review of ecological fitting and related concepts.
- Conceptual analysis and definition of key terms.
- Development of a conceptual model for ecological fitting.
- Comparative analysis with ecological resource tracking.
- Case illustrations of species colonization and novel associations.
Main Results:
- Ecological fitting is driven by phenotypic plasticity, correlated trait evolution, and phylogenetic conservatism.
- A conceptual model clarifies ecological fitting, distinguishing it from resource tracking.
- Ecological fitting can initiate evolutionary diversification or maintain evolutionary stasis.
- The concept is broadly applicable to community assembly, invasions, and biodiversity evolution.
Conclusions:
- Ecological fitting is a crucial evolutionary process influencing biodiversity.
- Understanding ecological fitting aids in studying community dynamics and biological invasions.
- The interplay of traits and novel conditions shapes evolutionary trajectories.
More Related Videos
Related Concept Videos
00:57Inclusive Fitness
Most altruistic behavior—in which one animal helps another at a cost to themselves—occurs between relatives. Scientists think these altruistic behaviors evolved because they increase the inclusive fitness of the animal providing help.
02:27Background and Environment Affect Phenotype
Although the genetic makeup of an organism plays a major role in determining the phenotype, there are also several environmental factors, such as temperature, oxygen availability, presence of mutagens, that can alter an organism’s phenotype.
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...
02:02Ecological Niches
All organisms have a position within an ecosystem. The complete set of living and nonliving factors—including food resources, climate, and terrain—that define the position of a given organism are collectively referred to as the organism’s ecological niche.Multiple species cannot occupy the exact same niche within their habitat. If the niches of two or more species overlap to a large extent, the competitive exclusion principle dictates that one species will outcompete the other, forcing it to...
02:16Genetics of Speciation
Speciation is the evolutionary process resulting in the formation of new, distinct species—groups of reproductively isolated populations.The genetics of speciation involves the different traits or isolating mechanisms preventing gene exchange, leading to reproductive isolation. Reproductive isolation can be due to reproductive barriers that have effects either before or after the formation of a zygote. Pre-zygotic mechanisms prevent fertilization from occurring, and post-zygotic mechanisms...
01:31Formation of Species
Speciation describes the formation of one or more new species from one or sometimes multiple original species. The resulting species are discrete from the parent species, and barriers to reproduction will typically exist. There are two primary mechanisms, speciation with and without geographic isolation—allopatric and sympatric speciation, respectively.Allopatric SpeciationIn allopatric speciation, gene flow between two populations of the same species is prevented by a geographic barrier, like...
01:22Phylogenetic Species Concept in Microbiology
The phylogenetic species concept (PSC) is a framework used to delineate species based on evolutionary relationships, emphasizing shared ancestry and diagnosable genetic traits. Unlike morphological or biological species concepts, the PSC is particularly advantageous for microbial taxonomy, where traditional reproductive or phenotypic criteria often fall short due to the prevalence of asexual reproduction, minimal morphological differentiation, and widespread horizontal gene transfer among...