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Timing and Number of Colonizations but Not Diversification Rates Affect Diversity Patterns in Hemosporidian Lineages on a Remote Oceanic Archipelago
Josselin Cornuault, Ben H. Warren, Joris A. M. Bertrand, Borja Milá, Christophe Thébaud and Philipp Heeb
The American Naturalist
Vol. 182, No. 6 (December 2013), pp. 820-833
Stable URL: http://www.jstor.org/stable/10.1086/673724
Page Count: 14
You can always find the topics here!Topics: Haplotypes, Parasites, Genera, Parasite hosts, Crop diversification, Phylogenetics, Archipelagos, Taxa, Species, Maximum likelihood estimation
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AbstractParasite diversity on remote oceanic archipelagos is determined by the number and timing of colonizations and by in situ diversification rate. In this study, we compare intra-archipelago diversity of two hemosporidian parasite genera, Plasmodium and Leucocytozoon, infecting birds of the Mascarene archipelago. Despite the generally higher vagility of Plasmodium parasites, we report a diversity of Plasmodium cytochrome b haplotypes in the archipelago much lower than that of Leucocytozoon. Using phylogenetic data, we find that this difference in diversity is consistent with differences in the timing and number of colonizations, while rates of diversification do not vary significantly between the two genera. The prominence of immigration history in explaining current diversity patterns highlights the importance of historical contingencies in driving disparate biogeographic patterns in potentially harmful blood parasites infecting island birds.
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