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Incongruence between genetic and morphological diversity in Microcebus griseorufus of Beza Mahafaly.

Publication ,  Journal Article
Heckman, KL; Rasoazanabary, E; Machlin, E; Godfrey, LR; Yoder, AD
Published in: BMC evolutionary biology
November 2006

The past decade has seen a remarkable increase in the number of recognized mouse lemur species (genus Microcebus). As recently as 1994, only two species of mouse lemur were recognized according to the rules of zoological nomenclature. That number has now climbed to as many as fifteen proposed species. Indeed, increases in recognized species diversity have also characterized other nocturnal primates--galagos, sportive lemurs, and tarsiers. Presumably, the movement relates more to a previous lack of information than it does to any recent proclivity for taxonomic splitting. Due to their nocturnal habits, one can hypothesize that mouse lemurs will show only minimal variation in pelage coloration as such variation should be inconsequential for the purposes of mate and/or species recognition. Even so, current species descriptions for nocturnal strepsirrhines place a good deal of emphasis on relatively fine distinctions in pelage coloration.Here, we report results from a multi-year study of mouse lemur populations from Beza Mahafaly in southern Madagascar. On the basis of morphological and pelage variation, we initially hypothesized the presence of up to three species of mouse lemurs occurring sympatrically at this locality, one of which appeared to be undescribed. Genetic analysis reveals definitively, however, that all three color morphs belong to a single recognized species, Microcebus griseorufus. Indeed, in some cases, the three color morphs can be characterized by identical mitochondrial haplotypes.Given these results, we conclude that investigators should always proceed with caution when using a single data source to identify novel species. A synthetic approach that combines morphological, genetic, geographic, and ecological data is most likely to reveal the true nature of species diversity.

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Published In

BMC evolutionary biology

DOI

EISSN

1471-2148

ISSN

1471-2148

Publication Date

November 2006

Volume

6

Start / End Page

98

Related Subject Headings

  • Species Specificity
  • Phylogeny
  • Models, Genetic
  • Madagascar
  • Lemur
  • Haplotypes
  • Genetic Variation
  • Genetic Speciation
  • Evolutionary Biology
  • Evolution, Molecular
 

Citation

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Heckman, K. L., Rasoazanabary, E., Machlin, E., Godfrey, L. R., & Yoder, A. D. (2006). Incongruence between genetic and morphological diversity in Microcebus griseorufus of Beza Mahafaly. BMC Evolutionary Biology, 6, 98. https://doi.org/10.1186/1471-2148-6-98
Heckman, Kellie L., Emilienne Rasoazanabary, Erica Machlin, Laurie R. Godfrey, and Anne D. Yoder. “Incongruence between genetic and morphological diversity in Microcebus griseorufus of Beza Mahafaly.BMC Evolutionary Biology 6 (November 2006): 98. https://doi.org/10.1186/1471-2148-6-98.
Heckman KL, Rasoazanabary E, Machlin E, Godfrey LR, Yoder AD. Incongruence between genetic and morphological diversity in Microcebus griseorufus of Beza Mahafaly. BMC evolutionary biology. 2006 Nov;6:98.
Heckman, Kellie L., et al. “Incongruence between genetic and morphological diversity in Microcebus griseorufus of Beza Mahafaly.BMC Evolutionary Biology, vol. 6, Nov. 2006, p. 98. Epmc, doi:10.1186/1471-2148-6-98.
Heckman KL, Rasoazanabary E, Machlin E, Godfrey LR, Yoder AD. Incongruence between genetic and morphological diversity in Microcebus griseorufus of Beza Mahafaly. BMC evolutionary biology. 2006 Nov;6:98.
Journal cover image

Published In

BMC evolutionary biology

DOI

EISSN

1471-2148

ISSN

1471-2148

Publication Date

November 2006

Volume

6

Start / End Page

98

Related Subject Headings

  • Species Specificity
  • Phylogeny
  • Models, Genetic
  • Madagascar
  • Lemur
  • Haplotypes
  • Genetic Variation
  • Genetic Speciation
  • Evolutionary Biology
  • Evolution, Molecular