Reference : Les populations de rats noirs insulaires de l'ouest de l'Europe. Essai préliminaire d...
Scientific journals : Article
Life sciences : Zoology
Les populations de rats noirs insulaires de l'ouest de l'Europe. Essai préliminaire de caractérisation génétique (caryotype et ADN mitochondrial)
[en] A first insight into the genetic structure (karyotype and mtDNA) of the insular black rats of western Europe
Libois, Roland mailto [Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Zoogéographie >]
Torrico, Jorge [U. de Rech. Zoogeographiques, Institut de Zoologie, Université de Liège, Quai Van Beneden, 224020 Liège, Belgium, c/Nataniel Aguirre, 37, Casilla 4995, Santa Cruz, Bolivia]
Ramalhinho, Maria Graça [Museu Nacional de Historia Natural, Rua da Escola Politecnica, 58, 1200 Lisboa, Portugal]
Michaux, Johan mailto [Université de Liège - ULiège > Département des sciences de la vie > Génétique et physiologie des microalgues >]
Fons, Roger [Observatoire Océanologique, Laboratoire Arago, Univ. P.-et-M.-Curie CNRS URA 2156, 66650 Banyuls-sur-Mer, France]
Mathias, Maria da Luz [Depto. de Zoologia e Antropologia, Faculdade de Ciencias, Universidade de Lisboa, Bloco C2, Campo Grande, 1700 Lisboa, Portugal]
Vie et Milieu
[en] Black rat ; Islands ; karyotype ; mtDNA ; Rattus rattus ; Western Europe
[en] The colonisation of Europe by the black rat (Rattus rattus) dates back only to the Roman times. This rodent is now widespread all over the continent as well as on many islands where it was introduced by man. In some instances, insular populations are morphologically differentiated by their greater size. In order to study the possible origin of these insular populations, rats were caught on many Mediterranean (Sicily, Sardinia, Lavezzi, Corsica, Elba, Porquerolles) and Atlantic islands (Ré, Oléron, Azores) and compared to animals from continental Europe (Spain), and Africa (Tunisia, Benin). Their karyotype was determined and their mtDNA restriction patterns studied using the HAE III and RSA I endonucleases and a polyacrylamide gel electrophoresis. These patterns appear very similar to each other though one of them is specific to the African animals, probably indicating that Europe and Africa were colonised by different strains.
Researchers ; Professionals

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