Homology versus convergence in resolving transphyletic correspondences of brain organization

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Due to the largely absent fossil record, phylogenetic comparisons of brain structures rely on the analysis of nervous systems in extant taxa, many of which appear to have distinctive and dissimilar neural arrangements. The use of a multitude of comparative criteria, including developmental genetics, phylogenomics and neural circuit architecture, has recently resolved a highly conserved structural and functional ground pattern organization in the arthropod central complex and vertebrate basal ganglia. The minuteness of resemblance is exemplified by orthologous action selection circuits that are formed by homologous gene networks and which can lead to similar pathologies and behavioral disorders. It has been argued, however, that these similarities of brain centers can only be due to convergent evolution. What is still missing is a plausible scenario to explain how convergence could result in such a multitude of similarities and minuteness of resemblances, including gene expression, functional attributes and pathologies. In contrast, homology by common descent is the more parsimonious explanation. Moreover, the divergent elaboration of arthropod central complex and vertebrate basal ganglia does not obscure their shared ground pattern organization and thus genealogical correspondence.

Original languageEnglish (US)
Pages (from-to)215-219
Number of pages5
JournalBrain, Behavior and Evolution
Volume82
Issue number4
DOIs
StatePublished - 2013

Fingerprint

Arthropods
Basal Ganglia
Vertebrates
Pathology
Gene Regulatory Networks
Brain
Systems Analysis
Nervous System
Gene Expression

Keywords

  • Arthropods
  • Basal ganglia
  • Brain evolution
  • Central complex
  • Convergence
  • Homology
  • Vertebrate

ASJC Scopus subject areas

  • Developmental Neuroscience
  • Behavioral Neuroscience

Cite this

Homology versus convergence in resolving transphyletic correspondences of brain organization. / Strausfeld, Nicholas J; Hirth, Frank.

In: Brain, Behavior and Evolution, Vol. 82, No. 4, 2013, p. 215-219.

Research output: Contribution to journalArticle

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