30 research outputs found
Pierre Loti'nin yĂŒzĂŒncĂŒ doÄum yıldönĂŒmĂŒ
Taha Toros ArĆivi, Dosya Adı: Pierre LotiÄ°stanbul Kalkınma Ajansı (TR10/14/YEN/0033) Ä°stanbul Development Agency (TR10/14/YEN/0033
Patellogastropod species, specimens, accession numbers, and sampling localities included in the study.
<p>Specimen identifications were based on Powell [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0170103#pone.0170103.ref014" target="_blank">14</a>], Valdovinos and RĂŒth [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0170103#pone.0170103.ref070" target="_blank">70</a>], Nakano and Ozawa [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0170103#pone.0170103.ref017" target="_blank">17</a>], and GonzĂĄlez-Wevar et al. [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0170103#pone.0170103.ref018" target="_blank">18</a>]. New COI sequences obtained in this study are marked in bold. Other Accession Numbers and their respective sources are indicated.</p
Bayesian maximum credibility tree (100 x 10<sup>6</sup> generations trees sampled every 1000 generations) in the evolution of the Patellogastropoda.
<p>Support values and posterior probabilities are marked in each node MP/ML/BI. Scale at the x-axis represents estimated age in million years and grey bars represent 95% highest posterior density intervals. * indicates the separation of the major clades (A, B, and C) within <i>Cellana</i> and ** indicates the separation between clades A and B.</p
Bayesian maximum credibility tree (100 x 10<sup>6</sup> generations trees sampled every 1000 generations) showing the recognized clades in the evolution of <i>Cellana</i>.
<p>Each clade was named according to the current distribution of their representatives.</p
Long-distance dispersal events in the biogeography of <i>Cellana</i>.
<p>A) red line, colonization of Hawaii (Haw) during the Miocene from a North-Western Pacific source (N-WP1); B) blue line, colonization of Juan FernĂĄndez Archipelago (JFI) during the Mio-Pliocene from a New Zealand source (NZ), yellow arrow head, colonization of New Zealand sub-Antarctic Islands (SAI) during the Plio-Pleistocene from a New Zealand South Island source (NZSI). Whether the colonization of French Polynesia represents a long-distance dispersal event or a stepping-stone mediated process is still uncertain (?).</p
Current distribution of <i>Cellana</i> along the Indo-Pacific showing sampling localities of <i>Cellana</i>, <i>Nacella</i> and Outgroups.
<p>Current distribution of <i>Cellana</i> along the Indo-Pacific showing sampling localities of <i>Cellana</i>, <i>Nacella</i> and Outgroups.</p
DataSheet_1_Complete mitochondrial genomes of the âAcmaeidaeâ limpets provide new insights into the internal phylogeny of the Patellogastropoda (Mollusca: Gastropoda).docx
The subclass Patellogastropoda (called âtrue limpetsâ) is one of the most primitive groups of the Gastropoda and contains approximately 350 species worldwide. Within this subclass, internal phylogeny among family members, including relationships of the âAcmaeidaeâ with other patellogastropod families, remains incompletely clarified. Here, we newly determined two complete mitochondrial genome sequences of âAcmaeidaeâ (Acmaea mitra and Niveotectura pallida) and one sequence from Lottiidae species (Discurria insessa) and combined them with mitochondrial genome sequences of 20 other published limpet species for phylogenetic analysis of the sequence dataset (nucleotides and amino acids) of 13 protein-coding genes using maximum likelihood and Bayesian inference methods. The resulting phylogenetic trees showed monophyly of Patellogastropoda species that were subsequently subdivided into two clades [clade I (Nacellidae, Pectinodontidae, Acmaeidae, and Patellidae) and clade II (Eoacmaeidae and Lottiidae)]. The sister relationship between the Acmaeidae and Pectinodontidae species revealed by phylogenetic analysis was also supported by sharing their similar gene arrangement patterns, which differ substantially from those of clade II members including the Lottiidae species. The polyphyletic relationship between Acmaeidae (grouped with Pectinodontidae as a sister taxon in clade I) and Lottiidae species (grouped with Eoacmaeidae in clade II) corroborates that they are phylogenetically distinct from each other. This mitochondrial genome phylogeny contradicts previous morphology-based hypotheses, yet highlights that Acmaeidae and Pectinodontidae are the most closely related. Further in-depth analysis of the complete mitochondrial genome sequences based on a broad range of samples including those from relatively unstudied and/or underrepresented taxa is required to fully understand the mitochondrial genome evolution and a more comprehensive phylogeny among the major groups of the Patellogastropoda.</p
The Impact of Yangtze River Discharge, Ocean Currents and Historical Events on the Biogeographic Pattern of <em>Cellana toreuma</em> along the China Coast
<div><h3>Aim</h3><p>Genetic data were used to measure the phylogeographic distribution of the limpet, <em>Cellana toreuma</em> along the China coast in order to acsertain impacts of historic events, ocean currents and especially freshwater discharge from the Yangtze River on the connectivity of intertidal species with limited larval dispersal capability.</p> <h3>Methodology/Principal Findings</h3><p>Genetic variation in 15 populations of <em>C. toreuma</em> (nâ=â418), ranging from the Yellow Sea (YS), East China Sea (ECS) and South China Sea (SCS), were determined from partial mitochondrial cytochrome c oxidase subunit I gene. Genetic diversity and divergence based on haplotype frequencies were analyzed using CONTRIB, and AMOVA was used to examine genetic population structure. Historic demographic expansions were evaluated from both neutrality tests and mismatch distribution tests. Among the 30 haplotypes identified, a dominant haplotype No. 1 (H1) existed in all the populations, and a relatively abundant private haplotype (H2) in YS. Pairwise F<sub>ST</sub> values between YS and the other two groups were relatively high and the percentage of variation among groups was 10.9%.</p> <h3>Conclusions</h3><p>The high nucleotide and gene diversity in the YS, with large pairwise genetic distances and relatively high percentages of variation among groups, suggests that this group was relatively isolated from ECS and SCS. This is likely driven by historic events, ocean currents, and demographic expansion. We propose that freshwater discharge from the Yangtze River, which may act as physical barrier limiting the southward dispersal of larvae from northern populations, is especially important in determining the separation of the YS group from the rest of the Chinese populations of <em>C. toreuma</em>.</p> </div
Collection sites, sample size, allocated geographic group and summary of molecular diversity for <i>Cellana toreuma</i> collected along the coast of China.
1<p>Values in the parentheses are the percentages of haplotype 1 in the populations;</p>*<p>percentages of haplotype no. 2 in QD and DGD populations;</p>**<p>percentages of haplotype no. 10 in SZ populations.</p>2<p>Based on the geographical locations, these populations were divided into three groups. YS, ECS and SCS represent populations from Yellow Sea, East China Sea and South China Sea, respectively.</p
Measures of genetic diversity and divergence for 15 population and three groups based on haplotype frequencies using CONTRIB 1.02 (see Table 1 for site and group abbreviations).
<p>Measures of genetic diversity and divergence for 15 population and three groups based on haplotype frequencies using CONTRIB 1.02 (see <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0036178#pone-0036178-t001" target="_blank">Table 1</a> for site and group abbreviations).</p