Phylogeography of the Tuco-Tuco Ctenomys Pearsoni: <span class="smallCaps">mt</span>DNa Variation and its Implication for Chromosomal Differentiation

Ivanna H. Tomasco and Enrique P. Lessa

in The Quintessential Naturalist

Published by University of California Press

Published in print July 2007 | ISBN: 9780520098596
Published online March 2012 | e-ISBN: 9780520916159 | DOI:
Phylogeography of the Tuco-Tuco Ctenomys Pearsoni: mtDNa Variation and its Implication for Chromosomal Differentiation

More Like This

Show all results sharing this subject:

  • Zoology and Animal Sciences


Show Summary Details


This chapter analyzes variation in the mitochondrial control region of the Ctenomys pearsoni throughout the distribution of this species, and shows that all variable populations and chromosomal forms are polyphyletic in their mitochondrial DNA. It notes that these results are incompatible with scenarios which entail the fixation by drift of negatively heterotic chromosomal rearrangements in this species because, under such scenarios, the monophyly of mitochondrial DNA of different chromosomal forms is expected. The chapter observes that C. pearsoni shows a broad pattern of isolation by distance and no consistent indication of possible departures from neutrality or historical demographic changes. It suggests that the species has occupied its current distribution for considerable time.

Keywords: mitochondrial control region; Ctenomys pearsoni; DNA; chromosomal rearrangements; historical demographic changes

Chapter.  8208 words.  Illustrated.

Subjects: Zoology and Animal Sciences

Full text: subscription required

How to subscribe Recommend to my Librarian

Users without a subscription are not able to see the full content. Please, subscribe or login to access all content.