The relationship between food ration and reproductive effort in the green sea urchin, Strongylocentrotus droebachiensis

Oecologia ◽  
1983 ◽  
Vol 56 (1) ◽  
pp. 50-57 ◽  
Author(s):  
R. J. Thompson
Keyword(s):  
Sea Urchin ◽  
Reproductive Effort ◽  
Strongylocentrotus Droebachiensis ◽  
Food Ration ◽  
Green Sea Urchin ◽  
The Relationship

scholarly journals New microsatellite loci for the green sea urchin Strongylocentrotus droebachiensis using universal M13 labelled markers

2014 ◽  
Vol 7 (1) ◽  
pp. 699 ◽  
Author(s):  
Marc B Anglès d’Auriac ◽  
Anders Hobæk ◽  
Hartvig Christie ◽  
Hege Gundersen ◽  
Camilla Fagerli ◽  
...  
Keyword(s):  
Sea Urchin ◽  
Microsatellite Loci ◽  
Strongylocentrotus Droebachiensis ◽  
Green Sea Urchin

Evidence for Association of Vibrio Echinoideorum with Tissue Necrosis on Body Shell of the Green Sea Urchin Strongylocentrotus Droebachiensis

2021 ◽  
Author(s):  
Jonathan Hira ◽  
Klara Stensvåg
Keyword(s):  
Sea Urchin ◽  
Virulence Genes ◽  
Vibrio Vulnificus ◽  
Sea Urchins ◽  
Opportunistic Pathogen ◽  
Significant Degree ◽  
Strongylocentrotus Droebachiensis ◽  
Host Immune System ◽  
Progressive Development ◽  
Green Sea Urchin

Abstract “Sea urchin lesion syndrome” is known as sea urchins disease with the progressive development of necrotic epidermal tissue and loss of external organs, including appendages on the outer body surface. Recently, a novel strain, Vibrio echinoideorum has been isolated from the lesions of green sea urchin (Strongylocentrotus droebachiensis), an economically important mariculture species in Norway. V. echinoideorum has not been reported elsewhere in association of with green sea urchin lesion syndrome. Therefore, in this study, an immersion based bacterial challenge experiment was performed to expose sea urchins (wounded and non-wounded) to V. echinoideorum, thereby mimicking a nearly natural host-pathogen interaction under controlled conditions. This infection experiment demonstrated that only the injured sea urchins developed the lesion to a significant degree when exposed to V. echinoideorum. Pure cultures of the employed bacterial strain was recovered from the infected animals and its identity was confirmed by the MALDI-TOF MS spectra profiling. Additionally, the hemolytic phenotype of V. echinoideorum substantiated its virulence potential towards the host, and this was also supported by the cytolytic effect on red spherule cells of sea urchins. Furthermore, the genome sequence of V. echinoideorum was assumed to encode potential virulence genes and were subjected for in silico comparison with the established virulence factors of Vibrio vulnificus and Vibrio tasmaniensis. This comparative virulence profile provided novel insights about virulence genes and their putative functions related to chemotaxis, adherence, invasion, evasion of the host immune system, and damage of host tissue and cells. Thus, it supports the pathogenicity of V. echinoideorum. In conclusion, the interaction of V. echinoideorum with injured sea urchins appears to be essential for the development of lesion syndrome and therefore, revealing its potentiality as an opportunistic pathogen.

Sympatric Growth Morphs and Size Bimodality in the Green Sea Urchin (Strongylocentrotus droebachiensis)

2002 ◽  
Vol 72 (1) ◽  
pp. 113 ◽  
Author(s):  
Robert L. Vadas ◽  
Barry D. Smith ◽  
Brian Beal ◽  
Tim Dowling
Keyword(s):  
Sea Urchin ◽  
Strongylocentrotus Droebachiensis ◽  
Green Sea Urchin
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