Extensive dinoflagellate phylogenies indicate infrequent marine-freshwater transitions

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Extensive dinoflagellate phylogenies indicate infrequent marine-freshwater transitions. / Logares, Ramiro; Shalchian-Tabrizi, Kamran; Boltovskoy, Andrés; Rengefors, Karin.

In: Molecular Phylogenetics and Evolution, Vol. 45, No. 3, 2007, p. 887-903.

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Logares, Ramiro ; Shalchian-Tabrizi, Kamran ; Boltovskoy, Andrés ; Rengefors, Karin. / Extensive dinoflagellate phylogenies indicate infrequent marine-freshwater transitions. In: Molecular Phylogenetics and Evolution. 2007 ; Vol. 45, No. 3. pp. 887-903.

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TY - JOUR

T1 - Extensive dinoflagellate phylogenies indicate infrequent marine-freshwater transitions

AU - Logares, Ramiro

AU - Shalchian-Tabrizi, Kamran

AU - Boltovskoy, Andrés

AU - Rengefors, Karin

PY - 2007

Y1 - 2007

N2 - We have constructed extensive 18S–28S rDNA dinoflagellate phylogenies (>200 sequences for each marker) using Maximum Likelihood and Bayesian Inference to study the evolutionary relationships among marine and freshwater species (43 new sequences). Our results indicated that (a) marine and freshwater species are usually not closely related, (b) several freshwater species cluster into monophyletic groups, (c) most marine–freshwater transitions do not seem to have occurred recently and, (d) only a small fraction of the marine lineages seem to have colonized fresh waters. Thus, it becomes apparent that the marine–freshwater boundary has acted as a barrier during the evolutionary diversification of dinoflagellates. Our results also shed light on the phylogenetic positions of several freshwater dinoflagellates which, to date, were uncertain.

AB - We have constructed extensive 18S–28S rDNA dinoflagellate phylogenies (>200 sequences for each marker) using Maximum Likelihood and Bayesian Inference to study the evolutionary relationships among marine and freshwater species (43 new sequences). Our results indicated that (a) marine and freshwater species are usually not closely related, (b) several freshwater species cluster into monophyletic groups, (c) most marine–freshwater transitions do not seem to have occurred recently and, (d) only a small fraction of the marine lineages seem to have colonized fresh waters. Thus, it becomes apparent that the marine–freshwater boundary has acted as a barrier during the evolutionary diversification of dinoflagellates. Our results also shed light on the phylogenetic positions of several freshwater dinoflagellates which, to date, were uncertain.

KW - Phylogeny

KW - Colonization

KW - Dinoflagellates

KW - Freshwater

U2 - 10.1016/j.ympev.2007.08.005

DO - 10.1016/j.ympev.2007.08.005

M3 - Article

VL - 45

SP - 887

EP - 903

JO - Molecular Phylogenetics and Evolution

T2 - Molecular Phylogenetics and Evolution

JF - Molecular Phylogenetics and Evolution

SN - 1095-9513

IS - 3

ER -