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A macroevolutionary perspective on species range limits.

Kaustuv Roy1, Gene Hunt, David Jablonski

  • 1Section of Ecology, Behavior and Evolution, University of California San Diego, La Jolla, CA 92093-0116, USA. kroy@ucsd.edu

Proceedings. Biological Sciences
|March 28, 2009
PubMed
Summary
This summary is machine-generated.

Species geographic range limits are influenced by macroevolutionary history. Marine bivalve genera with higher species richness have wider ranges, and phylogenetic signals in range limits show interoceanic variation.

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Area of Science:

  • Ecology
  • Evolutionary Biology
  • Paleontology
  • Biogeography

Background:

  • Geographic range limits are crucial for understanding species ecology, evolution, and conservation.
  • These limits result from complex interactions between species traits, dispersal, and the environment.
  • Macroevolutionary history and conserved traits likely influence species' range boundaries.

Purpose of the Study:

  • To investigate the influence of macroevolutionary history on the geographic range limits of marine bivalves.
  • To determine the relationship between genus-level range limits, species richness, and lineage age.
  • To assess the presence and variation of phylogenetic signals in range limits.

Main Methods:

  • Analysis of paleontological and biogeographic data for marine bivalve genera.
  • Statistical examination of the correlation between range limits, species richness, and genus age.
  • Evaluation of phylogenetic conservatism in range limits at genus and family levels.

Main Results:

  • Marine bivalve genus range limits are significantly related to their species richness.
  • The influence of genus age on range limits is weak and inconsistent.
  • A significant phylogenetic signal in range limits was detected at both genus and family levels, with interoceanic variation.

Conclusions:

  • Phylogenetic conservatism plays a key role in shaping marine bivalve geographic range limits.
  • Wide-ranging lineages tend to have clustered species within biogeographic provinces.
  • Understanding these evolutionary patterns is vital for predicting species distributions and informing conservation strategies.