Cladogenesis


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cladogenesis

[‚klad·ə′jen·ə·səs]
(evolution)
Evolution associated with altered habit and habitat, usually in isolated species populations.

Cladogenesis

 

(from Greek klados, “branch,” and “genesis”), a form of evolution of a group of living organisms leading by means of divergence to an increase in the number of separate species, genera, and families. The term, introduced by the German biologist B. Rensch in 1947, is often used as a synonym for speciation in the narrow sense—not completely accurately, since cladogenesis includes any increase in evolutionary diversity. The concept of cladogenesis is closely related to adaptive radiation and idioadaptation.

REFERENCES

Takhtadzhian, A. L. Sistema i filogeniia tsvetkovykh rastenii. Moscow-Leningrad, 1966. Pages 15–25.
Rensch, B. Neuere Probleme der Abstammungslehre: Die transspezifische Evolution, 2nd ed. Stuttgart, 1954.
References in periodicals archive ?
By contrast, cladogenesis (branching evolution) leads to the origin of two or more lineages from a common ancestor (Figure 1) (Futuyma, 2009).
Multiple lines of evidence support the hypothesis that cladogenesis and anagenesis occurred within the human lineage after the initial split between the human and chimp lineages.
One of the major important issues to testing for key innovations is the need to have full taxonomic sampling or to accommodate incomplete taxonomic sampling if one is to claim correlated cladogenesis.
Juliformian millipedes from the Lower Devonian of Euramerica: implications for the timing of millipede cladogenesis in the Paleozoic.
Molecular evidence suggests that cladogenesis within Natalina s.
With a common bifurcating pattern, it is used to illustrate phylogenetic relationships and show points at which various taxa have diverged from common ancestral forms; cladogenesis = the evolutionary change and diversification resulting from the branching off of new taxa from common ancestral lineages.
This places the latest possible period for cladogenesis between the subgenera Pseudo-Gunnera and Panke at the end of the Cretaceous, although additional evidence suggests an earlier divergence.
correlation of cladogenesis and vicariance events proposed by Moretti et
Parallel cladogenesis on the species level between insects and their host plants has really been documented in only very few instances (Farrell & Mitter, 1990), and in no case have the chemical components involved in these associations been investigated.
Our data may be used to analyze the role of plant chemistry in plant-insect interactions that are the result of adaptive radiation rather than parallel cladogenesis.