scholarly journals Sea ice protects the embryos of the Antarctic sea urchin Sterechinus neumayeri from oxidative damage due to naturally enhanced levels of UV-B radiation

2010 ◽  
Vol 213 (11) ◽  
pp. 1967-1975 ◽  
Author(s):  
K. N. Lister ◽  
M. D. Lamare ◽  
D. J. Burritt
Keyword(s):  
Oxidative Damage ◽  
Sea Ice ◽  
Sea Urchin ◽  
Sterechinus Neumayeri ◽  
The Antarctic

scholarly journals Expression pattern of heat shock proteins during acute thermal stress in the Antarctic sea urchin, Sterechinus neumayeri

2016 ◽  
Vol 89 (1) ◽  
Author(s):  
Karina González ◽  
Juan Gaitán-Espitia ◽  
Alejandro Font ◽  
César A. Cárdenas ◽  
Marcelo González-Aravena
Keyword(s):  
Thermal Stress ◽  
Heat Shock ◽  
Heat Shock Proteins ◽  
Expression Pattern ◽  
Sea Urchin ◽  
Sterechinus Neumayeri ◽  
Shock Proteins ◽  
The Antarctic

Polystyrene nanoparticles affect the innate immune system of the Antarctic sea urchin Sterechinus neumayeri

Polar Biology ◽  
2019 ◽  
Vol 42 (4) ◽  
pp. 743-757 ◽  
Author(s):  
E. Bergami ◽  
A. Krupinski Emerenciano ◽  
M. González-Aravena ◽  
C. A. Cárdenas ◽  
P. Hernández ◽  
...  
Keyword(s):  
Immune System ◽  
Sea Urchin ◽  
Innate Immune System ◽  
Innate Immune ◽  
Polystyrene Nanoparticles ◽  
Sterechinus Neumayeri ◽  
The Antarctic

Phagocytosis in vitro and in vivo in the Antarctic sea urchin Sterechinus neumayeri at 0°C

Polar Biology ◽  
2002 ◽  
Vol 25 (12) ◽  
pp. 891-897 ◽  
Author(s):  
João Borges ◽  
Laércio Porto-Neto ◽  
Maria Mangiaterra ◽  
Bernard Jensch-Junior ◽  
José da Silva
Keyword(s):  
Sea Urchin ◽  
Sterechinus Neumayeri ◽  
The Antarctic

On the food of the Antarctic sea anemone Urticinopsis antarctica Carlgren, 1927 (Actiniidae, Actiniaria, Anthozoa)

2016 ◽  
Vol 97 (1) ◽  
pp. 29-34 ◽  
Author(s):  
N. Yu. Ivanova ◽  
S.D. Grebelnyi
Keyword(s):  
Sea Urchin ◽  
Sea Anemone ◽  
Gastropod Species ◽  
Gastrovascular Cavity ◽  
Food Items ◽  
Sterechinus Neumayeri ◽  
The Family ◽  
Invertebrate Animals ◽  
The Antarctic

The results of an investigation into coelenteron content of the Antarctic sea anemone Urticinopsis antarctica Carlgren, 1927 are presented. Remains of invertebrate animals and fishes were found in the gastrovascular cavity of anemones. Some of them were damaged by digestion and were considered as food items of U. antarctica. These items were molluscs Addamussium colbecki (Smith, 1902), Laevilacunaria pumilia Smith, 1879, Eatoniella caliginosa Smith, 1875 and one not strictly identified gastropod species from the family Rissoidae; a crinoid from the family Comatulida; sea-urchin Sterechinus neumayeri Meissner, 1900; ophiuroid Ophiurolepis brevirima Mortensen, 1936 and a fish Trematomus sp. In contrast to the prey mentioned above, three specimens of amphipods Conicostoma sp. were not destroyed by digestion. They may represent commensals, which live in the gastrovascular cavity of the anemone.

Impacts of Petroleum Fuels on Fertilization and Development of the Antarctic Sea Urchin Sterechinus neumayeri

2020 ◽  
Vol 39 (12) ◽  
pp. 2527-2539
Author(s):  
Kathryn E. Brown ◽  
Catherine K. King ◽  
Peter L. Harrison
Keyword(s):  
Sea Urchin ◽  
Sterechinus Neumayeri ◽  
The Antarctic ◽  
Petroleum Fuels

Molecular phylogeny and divergence time of the Antarctic sea urchin (Sterechinus neumayeri) in relation to the South American sea urchins

2004 ◽  
Vol 16 (1) ◽  
pp. 29-36 ◽  
Author(s):  
YOUN-HO LEE ◽  
MIWHA SONG ◽  
SANGHOON LEE ◽  
ROXANA LEON ◽  
SYLVIA O. GODOY ◽  
...  
Keyword(s):  
South America ◽  
Sea Urchin ◽  
Dna Sequences ◽  
Phylogenetic Trees ◽  
Divergence Time ◽  
Paracentrotus Lividus ◽  
Sequence Evolution ◽  
Tectonic Event ◽  
Sterechinus Neumayeri ◽  
The Antarctic

Sterechinus neumayeri is an abundant regular sea urchin that lives in the shallow Antarctic waters. This organism has been used as a model system in many fields of the Antarctic biology. Yet, understanding of the evolutionary identity of the species, such as its phylogenetic relationships and divergence time, remains limited. Here, we reconstructed the molecular phylogenies of the species together with two sea urchin species in southernmost South America (Loxechinus albus and Pseudechinus magellanicus), a parechinid species (Paracentrotus lividus) and three strongylocentrotid species (Strongylocentrotus purpuratus, S. intermedius, and Hemicentrotus pulcherrimus) using mitochondrial DNA sequences of 12S rDNA-tRNA(gln) region (877nt) and cytochrome oxidase subunit I (COI, 1079nt). The rate of sequence evolution and the divergence time of the species were then estimated from the trees. The phylogenetic trees reveal that S. neumayeri is a sister group to the lineage of L. albus and P. lividus, and separated from the lineage 24–35 million years ago (m.y.a.). The divergence between S. neumayeri and L. albus coincides with the separation of Antarctica from South America, suggesting that the tectonic event must have provoked the cladogenesis of the species through vicariance.

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