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Reconstructing the history of intercontinental dispersal in Daphnia lumholtzi by use of genetic markers
Author(s) -
Havel John E.,
Colbourne John K.,
Hebert Paul D. N.
Publication year - 2000
Publication title -
limnology and oceanography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.7
H-Index - 197
eISSN - 1939-5590
pISSN - 0024-3590
DOI - 10.4319/lo.2000.45.6.1414
Subject(s) - biological dispersal , biology , genetic divergence , divergence (linguistics) , ecology , mitochondrial dna , phylogeography , daphnia , genetic structure , branchiopoda , zoology , genetic similarity , cladocera , genetic variation , crustacean , genetic diversity , phylogenetics , population , demography , genetics , linguistics , philosophy , sociology , gene
After its appearance in 1989, the cladoceran Daphnia lumholtzi rapidly dispersed throughout the southern United States. In the current study, we used allozyme and mitochondrial deoxyribonucleic acid sequence data to infer the past dispersal of this species. Both genetic markers revealed the similarity among all U.S. populations and those from Uganda and Nepal but their divergence from Australian lineages. The extent of genetic divergence among populations, when coupled with estimates of rates of molecular evolution, suggests that the distribution of this species reflects a series of long‐distance dispersal events over the last 4 million years.