The Early Development of the Sea Urchin Diadema setosum (Leske, 1778) in the region of North Jeddah, Red Sea

2010 ◽  
Vol 21 (2) ◽  
pp. 3-14 ◽  
Author(s):  
Adel Guirguis
Keyword(s):  
Early Development ◽  
Sea Urchin ◽  
Red Sea ◽  
Diadema Setosum

Description of Idiomysis diadema sp. nov. (Mysida, Mysidae, Anisomysini), associated with Diadema urchins in the Red Sea; with nomenclatorial notes on its genus

Crustaceana ◽  
2016 ◽  
Vol 89 (5) ◽  
pp. 611-623 ◽  
Author(s):  
Karl J. Wittmann
Keyword(s):  
Sea Urchin ◽  
Red Sea ◽  
Reef Flat ◽  
Feminine Gender ◽  
Species Inventory ◽  
The Feminine ◽  
Gender Attribution ◽  
Current Species ◽  
Antennal Scale ◽  
Diadema Setosum

The mysid Idiomysis diadema sp. nov. is described from small swarms hovering between the spines of the sea urchin Diadema setosum (Leske, 1778) at the reef flat of Dahab, Red Sea. The most striking characters within its genus are the subdivided antennal scale, endopod of uropods longer than exopod, and a pair of minute spines on the terminal margin of the telson. With this first description, a total of six Idiomysis species are now known, two of which are associated with cnidarians and only the new one with echinoids. An updated definition is given for the genus Idiomysis W. M. Tattersall, 1922, in order to match the current species inventory. To avoid previously incorrect and ambivalent gender attribution, I propose using the feminine gender for this genus throughout. Consequently, the spelling of two of its taxa, I. mozambica Deprez, Wooldridge & Mees, 2001, and I. robusta Connell, 2008, is changed.

scholarly journals Antimicrobial agents from sea urchin (Diadema setosum) collected from the Red Sea, Egypt

2020 ◽  
Vol 24 (5) ◽  
pp. 33-51
Author(s):  
Waleed M.M. El-Sayed ◽  
Mostafa M. Elshaer ◽  
Hassan A.H. Ibrahim ◽  
Mohammed E.A. El-Metwaly
Keyword(s):  
Sea Urchin ◽  
Red Sea ◽  
Antimicrobial Agents ◽  
Diadema Setosum

scholarly journals Select microRNAs are essential for early development in the sea urchin

2012 ◽  
Vol 362 (1) ◽  
pp. 104-113 ◽  
Author(s):  
Jia L. Song ◽  
Marlon Stoeckius ◽  
Jonas Maaskola ◽  
Marc Friedländer ◽  
Nadezda Stepicheva ◽  
...  
Keyword(s):  
Early Development ◽  
Sea Urchin

The impact of CO 2 -driven ocean acidification on early development and calcification in the sea urchin Strongylocentrotus intermedius

2016 ◽  
Vol 112 (1-2) ◽  
pp. 291-302 ◽  
Author(s):  
Yaoyao Zhan ◽  
Wanbin Hu ◽  
Weijie Zhang ◽  
Minbo Liu ◽  
Lizhu Duan ◽  
...  
Keyword(s):  
Ocean Acidification ◽  
Early Development ◽  
Sea Urchin ◽  
Strongylocentrotus Intermedius ◽  
The Impact

Synthesis of nuclear and cytoplasmic proteins in the early development of fishes and echinoderms

Development ◽  
1971 ◽  
Vol 26 (3) ◽  
pp. 611-622
Author(s):  
Maya R. Krigsgaber ◽  
Alla A. Kostomarova ◽  
Tamara A. Terekhova ◽  
Tatiana A. Burakova
Keyword(s):  
Amino Acids ◽  
Early Development ◽  
Sea Urchin ◽  
Nuclear Volume ◽  
Sea Urchin Embryos ◽  
Cytoplasmic Proteins ◽  
Specific Activities ◽  
Strongylocentrotus Nudus ◽  
Silver Grains ◽  
Misgurnus Fossilis

Synthesis of nuclear and cytoplasmic proteins was studied biochemically and autoradiographically in early loach (Misgurnus fossilis) and sea-urchin (Strongylocentrotus nudus) embryos. After incubation with [14C]amino acids for 5–120 min the ratio of the specific activities of nuclear, mitochondrial and 12000 g supernatant proteins was shown to be equal approximately to 6:1:2 in loach embryos and to 8:4:3 in sea-urchin embryos independently of the duration of labelling. After incubation with [3H]amino acids the number of silver grains per unit section was on the average 2·4 times higher for nuclei than it was for cytoplasm at mid-blastula and mid-gastrula stages. At the mid-gastrula the vegeto-animal gradient of protein synthesis was found. A higher level of the synthesis of nuclear proteins as compared with that of cytoplasmic proteins appears to be related to an increase in the nuclear volume and the nucleo-cytoplasmic ratio during the early development of the loach and sea-urchin embryos.

Sublethal mechanisms of Pb and Zn toxicity to the purple sea urchin (Strongylocentrotus purpuratus) during early development

2014 ◽  
Vol 146 ◽  
pp. 220-229 ◽  
Author(s):  
Margaret S. Tellis ◽  
Mariana M. Lauer ◽  
Sunita Nadella ◽  
Adalto Bianchini ◽  
Chris M. Wood
Keyword(s):  
Early Development ◽  
Sea Urchin ◽  
Strongylocentrotus Purpuratus ◽  
Zn Toxicity ◽  
Purple Sea Urchin
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