Borovikova E., Makhrov A. Study of Coregonus Populations in the Zone of Intergradation between the Vendace and Least Cisco: the Role of the Environment in Speciation // Principy èkologii. 2012. № 4. P. 5‒20. DOI: 10.15393/j1.art.2012.1761


Issue № 4

Analytical review

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Study of Coregonus Populations in the Zone of Intergradation between the Vendace and Least Cisco: the Role of the Environment in Speciation

Borovikova
   Elena 		I. D. Papanin Institute for biology of inland waters of RAS, Borok, Nekouzski district, Yaroslavl region, 152742, Russia, elenalex1@yandex.ru
Makhrov
   Alexander 		A. N. Severtsov Institute of Ecology and Evolution, 33 Lenin, makhrov12@mail.ru
Keywords:
speciation
distribution
phylogeography
Coregonus
hybridization		 Summary: Phylogenetic analysis using mitochondrial and nuclear DNA markers showed that the Least Cisco gradually spread from Siberia to Europe until the last glaciation. This was accompanied by gradual replacement of "typically Siberian" gene variants with "typically European" ones. Morphological traits also changed as the species expanded, the changes in the body proportions being apparently adaptive. They are likely to reflect the transition of the cisco from the semi-anadromous life history type to the lacustrine type, which is more characteristic of the European form. Thus, the speciation of the vendace is clearly adaptive, at least with respect to some traits. It should be noted, however, that the results of this study raise doubt as to whether the vendace has entirely diverged from the Least Cisco, and the speciation has completed.

© Petrozavodsk State University
Reviewer: I. Bolotov
Reviewer: A. E. Veselov
Received on: 06 December 2012
Published on: 05 March 2013

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