scholarly journals Regeneration in the enteropneust hemichordate, Ptychodera flava , and its evolutionary implications

2018 ◽  
Vol 60 (6) ◽  
pp. 400-408 ◽  
Author(s):  
Asuka Arimoto ◽  
Kuni Tagawa
Keyword(s):  
Ptychodera Flava

scholarly journals Development and Neural Organization of the Tornaria Larva of the Hawaiian Hemichordate, Ptychodera flava

2004 ◽  
Vol 21 (1) ◽  
pp. 69-78 ◽  
Author(s):  
Yoko Nakajima ◽  
Tom Humphreys ◽  
Hiroyuki Kaneko ◽  
Kunifumi Tagawa
Keyword(s):  
Neural Organization ◽  
Ptychodera Flava

Deuterostome evolution: early development in the enteropneust hemichordate, Ptychodera flava

2001 ◽  
Vol 3 (6) ◽  
pp. 375-390 ◽  
Author(s):  
Jonathan Q. Henry ◽  
Kunifumi Tagawa ◽  
Mark Q. Martindale
Keyword(s):  
Early Development ◽  
Deuterostome Evolution ◽  
Ptychodera Flava

scholarly journals HedgehogExpression During Development and Regeneration in the Hemichordate,Ptychodera flava

2015 ◽  
Vol 32 (1) ◽  
pp. 33-37 ◽  
Author(s):  
Asuka Arimoto ◽  
Kuni Tagawa
Keyword(s):  
Ptychodera Flava

Getting a Head with Ptychodera flava Larval Regeneration

2018 ◽  
Vol 234 (3) ◽  
pp. 152-164 ◽  
Author(s):  
Shawn M. Luttrell ◽  
Yi-Hsien Su ◽  
Billie J. Swalla
Keyword(s):  
Ptychodera Flava

scholarly journals Identification of an intact ParaHox cluster with temporal colinearity but altered spatial colinearity in the hemichordate Ptychodera flava

2013 ◽  
Vol 13 (1) ◽  
pp. 129 ◽  
Author(s):  
Tetsuro Ikuta ◽  
Yi-Chih Chen ◽  
Rossella Annunziata ◽  
Hsiu-Chi Ting ◽  
Che-huang Tung ◽  
...  
Keyword(s):  
Parahox Cluster ◽  
Ptychodera Flava

scholarly journals GENOMA: a multilevel platform for marine biology

2018 ◽  
Author(s):  
Chiara Colantuono ◽  
Marco Miralto ◽  
Mara Sangiovanni ◽  
Luca Ambrosino ◽  
Maria Luisa Chiusano
Keyword(s):  
Gasterosteus Aculeatus ◽  
Marine Biology ◽  
Marine Species ◽  
Gene Annotations ◽  
Ptychodera Flava ◽  
On Line ◽  
Set Up ◽  
Genome Assemblies ◽  
Next Generation Sequencing Ngs ◽  
Patiria Miniata

Next-generation sequencing (NGS) technologies are greatly facilitating the sequencing of whole genomes leading to the production of different gene annotations, released often from both reference resources (such as NCBI or Ensembl) and specific consortia. All these annotations are in general very heterogeneous and not cross-linked, providing ambiguous knowledge to the users. In order to give a quick view of what is available, and trying to centralize all the genomic information of reference marine species, we set up GENOMA (GENOmes for MArine biology). GENOMA is a multilevel platform that includes all the available genome assemblies and gene annotations about 12 species (Acanthaster planci, Branchiostoma floridae, Ciona robusta, Ciona savignyi, Gasterosteus aculeatus, Octopus bimaculoides, Patiria miniata, Phaeodactylum tricornutum, Ptychodera flava and Saccoglossus kowalevskii). Each species has a dedicated JBroswe and web page, where is summarized the comparison between the different genome versions and gene annotations available, together with the possibility to directly download all the information. Moreover, an interactive table including the union of different gene annotations is also consultable on-line. Finally, a query page system that allows to search specific features in one or more annotations simultaneously, is embedded in the platform. GENOMA is publicly available at http://bioinfo.szn.it/genoma/.

Memoirs: On Ptychodera flava, Eschscholtz

1897 ◽  
Vol s2-40 (157) ◽  
pp. 165-184
Author(s):  
ARTHUR WILLEY
Keyword(s):  
Living Condition ◽  
Structure And Function ◽  
The Other ◽  
Detailed Structure ◽  
Pharyngeal Wall ◽  
Littoral Habitat ◽  
Collar Region ◽  
Ptychodera Flava ◽  
And Function ◽  
First Time

1. This is the first time that an Enteropneust with a free pharynx has been studied in the living condition. 2. The Ptychodera flava of Eschscholtz (char. emend. mihi) is rightly assigned by Spengel to his amended genus Ptychodera, as shown by the presence of the genital pleura, of external liver saccules, and by the length of the collar region. 3. P. flava belongs to Spengel's sub-genus Chlamydothorax, as shown by the ventral origin of the genital pleura, the diffuse gonads, and the free pharynx. 4. In the fact of the gill-slits being open directly to the exterior throughout their entire length, P. flava is more closely related to P. bahamensis than to any other described species. This is also indicated by the simple rows of paired liver saccules as opposed to the irregular multiple arrangement met with in P. erythræa. 5. The genus Ptychodera. (referring more especially to the sub-genus Chlamydothorax) probably represents an archaic type, as shown by the diffuse arrangement of the gonads, the free pharynx, and its littoral habitat; and it is probably not, as Spengel supposes it to be, phylogenetically younger than the other genera of Enteropneusta. 6. The gill-slits, branchial skeleton, and the temporary atrium formed by the apposition of the genital pleura in Ptychodera, offer a general homology to the corresponding structures in Amphioxus and the Ascidians, while presenting many differences in the details of their structure and relations. 7. Some of these differences are comparatively unimportant, and such as might well be expected to occur in distantly related forms with such totally different habits of existence, while others are to be accounted for by a wide interpretation of the principle of correlation between structure and function. 8. Many differences of detailed structure in the pharyngeal wall and its skeletal supports between the Enteropneusta and Amphioxus are to be correlated with the fact that, in the former, the tongue-bars are larger (often, as in P. flava, very much larger) than the primary bars, while in the latter the reverse condition obtains.

scholarly journals Biomineral ultrastructure, elemental constitution and genomic analysis of biomineralization-related proteins in hemichordates

2012 ◽  
Vol 279 (1740) ◽  
pp. 3041-3048 ◽  
Author(s):  
C. B. Cameron ◽  
C. D. Bishop
Keyword(s):  
Expressed Sequence Tag ◽  
Genomic Analysis ◽  
Mineralized Tissue ◽  
Saccoglossus Kowalevskii ◽  
Ptychodera Flava ◽  
The Common ◽  
Gene Regulatory ◽  
Related Proteins ◽  
Expressed Sequence

Here, we report the discovery and characterization of biominerals in the acorn worms Saccoglossus bromophenolosus and Ptychodera flava galapagos (Phylum: Hemichordata). Using electron microscopy, X-ray microprobe analyses and confocal Raman spectroscopy, we show that hemichordate biominerals are small CaCO 3 aragonitic elements restricted to specialized epidermal structures, and in S. bromophenolosus, are apparently secreted by sclerocytes. Investigation of urchin biomineralizing proteins in the translated genome and expressed sequence tag (EST) libraries of Saccoglossus kowalevskii indicates that three members of the urchin MSP-130 family, a carbonic anhydrase and a matrix metaloprotease are present and transcribed during the development of S. kowalevskii . The SM family of proteins is absent from the hemichordate genome. These results increase the number of phyla known to biomineralize and suggest that some of the gene-regulatory ‘toolkit’, if not mineralized tissue themselves, may have been present in the common ancestor to hemichordates and echinoderms.

Sign in / Sign up

Export Citation Format

Share Document