An arsenic-containing nucleoside from the kidney of the giant clam, Tridacna maxima

1991 ◽  
pp. 928 ◽  
Author(s):  
Kevin A. Francesconi ◽  
Robert V. Stick ◽  
John S. Edmonds
Keyword(s):  
Giant Clam ◽  
Tridacna Maxima

scholarly journals Tissue-Specific Microbiomes of the Red Sea Giant Clam Tridacna maxima Highlight Differential Abundance of Endozoicomonadaceae

2019 ◽  
Vol 10 ◽  
Author(s):  
Susann Rossbach ◽  
Anny Cardenas ◽  
Gabriela Perna ◽  
Carlos M. Duarte ◽  
Christian R. Voolstra
Keyword(s):  
Red Sea ◽  
Giant Clam ◽  
Differential Abundance ◽  
Tissue Specific ◽  
Tridacna Maxima

scholarly journals Metabarcoding reveals distinct microbiotypes in the giant clam Tridacna maxima

Microbiome ◽  
2020 ◽  
Vol 8 (1) ◽  
Author(s):  
Isis Guibert ◽  
Gael Lecellier ◽  
Gergely Torda ◽  
Xavier Pochon ◽  
Véronique Berteaux-Lecellier
Keyword(s):  
Giant Clam ◽  
Tridacna Maxima

Influence of field-based nutrient enrichment on the photobiology of the giant clam Tridacna maxima

1999 ◽  
Vol 133 (4) ◽  
pp. 659-664 ◽  
Author(s):  
Not Available Not Available ◽  
O. Hoegh-Guldberg
Keyword(s):  
Nutrient Enrichment ◽  
Giant Clam ◽  
Tridacna Maxima

The Synthesis of (R)-2',3'-Dihydroxypropyl 5-Deoxy-5-Dimethylarsinyl-β-D-Riboside, a Naturally Occurring Arsenic-Containing Carbohydrate

1987 ◽  
Vol 40 (11) ◽  
pp. 1901 ◽  
Author(s):  
DP Mcadam ◽  
AMA Perera ◽  
RV Stick
Keyword(s):  
Natural Product ◽  
Hydroxy Group ◽  
Title Compound ◽  
Protecting Groups ◽  
Giant Clam ◽  
Free Hydroxy Group ◽  
Naturally Occurring ◽  
Step Procedure ◽  
Tridacna Maxima ◽  
Subsequent Chemical

The synthesis of the title compound, isolated from the brown kelp ( Ecklonia radiata ) or the giant clam (Tridacna maxima), is reported. Glycosidation of 1-O-acetyl-2,3,5-tri- O- benzoyl -β-D-ribose, either directly with (S)-1,2-di-O-benzylglycerol or via the derived orthoester with (S)-1,2-O-isopropylideneglycerol, led to two fully protected glycerol β-D- ribofuranosides. Subsequent chemical manipulations led to a common intermediate having a free hydroxy group at C5 of the D-ribose residue. Replacement of this hydroxy group by a chlorine atom allowed the introduction of the dimethylarsinyl group at C5 in a two-step procedure, and removal of protecting groups provided the natural product.

scholarly journals Towards an in-depth characterization of Symbiodiniaceae in tropical giant clams via multiplex metabarcoding

2018 ◽  
Author(s):  
Xavier Pochon ◽  
Patricia Wecker ◽  
Michael Stat ◽  
Veronique Berteaux-Lecellier ◽  
Gael Lecellier
Keyword(s):  
High Throughput Sequencing ◽  
Critical Role ◽  
Cost Savings ◽  
Giant Clam ◽  
Sequence Coverage ◽  
Single Marker ◽  
Coral Reef Ecosystems ◽  
Phylogenetic Resolution ◽  
Small Set ◽  
Tridacna Maxima

High-throughput sequencing is revolutionizing our ability to comprehensively characterize free-living and symbiotic Symbiodiniaceae, a diverse dinoflagellate group that plays a critical role in coral reef ecosystems. Most studies however, focus on a single marker for metabarcoding Symbiodiniaceae, potentially missing important ecological traits that a combination of markers may capture. In this proof-of-concept study, we used a small set of symbiotic giant clam (Tridacna maxima) samples obtained from nine French Polynesian locations and developed a multiplex metabarcoding method that pools and simultaneously sequences multiple Symbiodiniaceae genes for in-depth biodiversity assessments. Our results showed that the technique effectively recovered very similar proportions of sequence reads and dominant Symbiodiniaceae clades among the three multiplexed genes investigated per sample, and captured varying levels of phylogenetic resolution enabling a more comprehensive assessment of the diversity present. Multiplex metabarcoding offers significant analytical cost savings while providing exceptional phylogenetic information and sequence coverage.

scholarly journals Large dendrinids meet giant clam: the bioerosion trace fossil <i>Neodendrina carnelia</i> igen. et isp. n. in a <i>Tridacna</i> shell from Pleistocene–Holocene coral reef deposits, Red Sea, Egypt

Fossil Record ◽  
2018 ◽  
Vol 21 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Max Wisshak ◽  
Christian Neumann
Keyword(s):  
Coral Reef ◽  
Red Sea ◽  
Trace Fossil ◽  
Giant Clam ◽  
Shallow Marine ◽  
Tropical Coral ◽  
Tropical Coral Reef ◽  
Tridacna Maxima ◽  
Large Representative ◽  
Sea Coast

Abstract. The rosette-shaped microboring trace fossil Neodendrina carnelia igen. et isp. n. – a large representative of the ichnofamily Dendrinidae – is identified on the inner side of the giant clam Tridacna maxima from Pleistocene to Holocene coral reef deposits of the El Quseir district at the Egyptian Red Sea coast. The new dendritic bioerosion trace fossil is diagnosed as a radial rosette comprised of a prostrate system of roofless canals that ramify in a strictly dichotomous fashion forming intermittent branches of uniform width and rounded terminations. The trace appears to be rare, although in the type material it occurs in a cluster of more than a hundred specimens. The location of traces on the interior surface of the shell suggests that boring occurred post-mortem to the host. Its record is presently restricted to shallow marine, euphotic, tropical coral reef settings in the Western Indo-Pacific (Red Sea and Madagascar). The biological identity of the trace maker cannot be resolved yet, but several lines of reasoning allow speculations directed towards a complex attachment scar, perhaps produced by a benthic foraminiferan or a macrophyte.

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