0000021483 00000 n 0000033141 00000 n 0000026957 00000 n 0000021284 00000 n 0000020153 00000 n 0000034459 00000 n 0000031180 00000 n 0000035371 00000 n 0000041918 00000 n 0000047495 00000 n 0000027553 00000 n
0000037654 00000 n This arrangement contrasts sharply with the close relationship between blue and fin whales inferred by natural hybridizations (.Lineage IV is composed solely of the gray whale,In order to check whether or not the clock model holds for the mt-protein sequences, the likelihood ratio test was carried out as follows: twice the log-likelihood difference between the nonclock and clock models for the tree topology in,We used 12 mt-protein sequences to estimate divergence times of lineages leading to different species of Mysticeti (,The first divergence of extant mysticete lineages, separating right whales from other extant mysticetes, is estimated at 27.3 ± 1.9 Mya (late Oligocene). 0000013099 00000 n The merit of nucleotide sequence analysis is that it can take account of synonymous substitutions that might be informative in the timescale of evolution we are analyzing in this work. 0000014556 00000 n 0000041542 00000 n 0000037902 00000 n Le « Cetotheriidae » (mammalia, Cetacea, Mysticeti) de la Formation Pisco (Miocène inférieur - Pliocène inférieur) de la côte péruvienne. Noun 1. Geol,Evolutionary history of cetaceans: A review,Secondary Adaptation of Tetrapods to Life in Water,Evidence from milk casein genes that cetaceans are close relatives of hippopotamid artiodactyls,Morphological evidence for the phylogeny of Cetacea,A codon-based model of nucleotide substitution for protein-coding DNA sequences,The complete mitochondrial genome of the nudibranch,Amino acid difference formula to help explain protein evolution,Accuracies of the simple methods for estimating the bootstrap probability of a maximum likelihood tree,Dating of the human-ape splitting by a molecular clock of mitochondrial DNA,Time scale of eutherian evolution estimated without assuming a constant rate of molecular evolution,Mitochondrial genome variation and the origin of modern humans,A phylogenetic study of the origin of the domestic pig estimated from the near-complete mtDNA genome,A new cetothere (Cetacea: Mysticeti) from the early Miocene of Japan,Converting distance to time: An application to huma. 0000036500 00000 n However, most of these trees are very bad and unpromising and we eliminated such trees by an approximate method. 0000028929 00000 n Amphiptera pacifica.jpg 650 × 510; 36 KB. Baleen whales are sometimes referred to as the "great whales". 0000032389 00000 n
0000030544 00000 n 0000024547 00000 n
%PDF-1.4 %���� 0000025236 00000 n 0000018842 00000 n 0000023165 00000 n Even so, the constrained searches were large to allow exhaustive analysis with a computationally intensive method, and we conducted an approximate likelihood analysis with the ProtML program for all the candidate trees. Archaebalaenoptera liesselensis.jpg 1,260 × 726; 341 KB. We determined complete mtDNA sequences of 10 extant Mysticeti species, inferred their phylogenetic relationships, and estimated node divergence times. 0000016932 00000 n 0000024413 00000 n 0000036105 00000 n Families in Suborder Odontoceti (10) Physeteridae Kogiidae Ziphiidae Monodontidae Delphinidae Phocoenidae Platanistidae Iniidae Lipotidae Pontoporiidae. The 12 to 13 living species comprise the extant Mysticeti, one of the two suborders of the Cetacea. Analysis of a common cetacean DNA satellite confirmed the early divergence of the Balaenidae, but removed the morphologically anomalous Neobalaenidae from their long-held association with this group, suggesting instead a closer association with the Eschrichtiidae and Balaenopteridae (.Previous molecular phylogenetic analyses of baleen whale based on partial mitochondrial DNA sequences (A and B).
The fossil and molecular records concord that balaenid whales diverged soon thereafter, near the Oligocene/Miocene boundary, with right and bowhead whales as the extant representatives of this basal mysticete lineage. 0000039694 00000 n 0000024959 00000 n 0000015055 00000 n 0000020564 00000 n An SAP-Exo mixture containing 1 unit of Exo I and 1 unit of SAP (USB Corporation) for 50 μL of PCR product was heated to 37,The 12 proteins encoded in the same strand of mtDNA were prepared for phylogenetic analyses. 0000025568 00000 n 0000020767 00000 n 0000025027 00000 n 0000028284 00000 n We also estimated the divergence times of all extant mysticete species, accounting for evolutionary rate heterogeneity among lineages. 0000023518 00000 n 0000029938 00000 n 0000018375 00000 n 0000058426 00000 n 0000023999 00000 n 0000029132 00000 n 0000038376 00000 n 0000033911 00000 n 0000015189 00000 n 0000025928 00000 n 0000026537 00000 n
0000030852 00000 n In estimating the branch lengths for each tree topology by the ML, we used the Newton-Raphson method, which is time consuming. 0000014085 00000 n 0000014305 00000 n 0000013741 00000 n 0000030484 00000 n 0000038494 00000 n However, the most significant conflict in evolutionary timing between the fossil and molecular data is encountered among the balaenopterid crown group. The mtDNA analysis further suggests that four lineages exist within the clade of Eschrichtiidae + Balaenopteridae, including a sister relationship between the humpback and fin whales, and a monophyletic group formed by the blue, sei, and Bryde's whales, each of which represents a newly recognized phylogenetic relationship in Mysticeti.
0000040661 00000 n 0000025808 00000 n 0000021551 00000 n 0000026288 00000 n 0000034091 00000 n 0000012245 00000 n 0000012892 00000 n 0000045970 00000 n
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