Genetic change after colonization

Krakatau. A century of change

Auteurs :
CARSON, H. L.
THORNTON, I. W. B.

Description :
Consideration is given to the case of a daughter population of a sexual species that becomes successfully established in an area previously lacking that species, as has occurred recently in the Krakataus. Growing shield volcanoes in particular show rapid turnover of their surfaces such that organisms surviving there must continually recolonize or become extinct. Such species, existing as metapopulations, should be prone to bottleneck effects that produce genetic shifts. Examples are given from Drosophila silvestris on the island of Hawaii. The relevance of such genetic shifts to population structure and evolutionary change in populations is discussed, emphasizing the probable role of meta-population structure.


Type de document :
Article de monographie

Source :
GeoJournal, issn : 0343-2521, 1992, vol. 28, n°. 2, p. 297-302, Collation : Illustration, Références bibliographiques : 21 réf.

Date :
1992

Editeur :
Pays édition : Allemagne, Heidelberg, Springer