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Dispersion pattern of the medfly from its geographic centre of origin and genetic relationships of the medfly with two close relatives
Author(s) -
Kourti A.,
Loukas M.,
Sourdis J.
Publication year - 1992
Publication title -
entomologia experimentalis et applicata
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.765
H-Index - 83
eISSN - 1570-7458
pISSN - 0013-8703
DOI - 10.1111/j.1570-7458.1992.tb02420.x
Subject(s) - ceratitis capitata , biology , phylogenetic tree , capitata , mediterranean climate , population , principal component analysis , evolutionary biology , analysis of molecular variance , zoology , tephritidae , ecology , pest analysis , botany , genetic structure , genetic variation , genetics , demography , artificial intelligence , sociology , computer science , gene , brassica oleracea
We used three different approaches, a phylogenetic analysis, the principal component analysis, and Gabriel Graphs, to study the dispersion of the medfly from its geographic centre of origin. Our analysis was based on 13 enzyme polymorphisms detected electrophoretically in 15 natural populations coming from distinct geographic areas. The results indicate that (i) there is a clear‐cut separation of the native African from the introduced populations, (ii) the population from Spain seems to connect the African and the Mediterranean or American populations, and (iii) the Mediterranean populations as well as the American ones comprise two distinct groups of closely related populations. We have also estimated a phylogenetic tree for 3 species of the genus Ceratitis: C. capitata, C. rosa and C. nigra , based on electrophoretic data under the assumption of a molecular clock. The results suggest that C. capitata and C. rosa are more closely related to each other than either is to C. nigra.