Understanding the effect of time, temperature and salts on carrageenan extraction from Chondrus crispus

2021 ◽  
Vol 58 ◽  
pp. 102371
Author(s):  
Adiguna Bahari ◽  
Katlijn Moelants ◽  
Joel Wallecan ◽  
Gino Mangiante ◽  
Jacques Mazoyer ◽  
...  
Keyword(s):  
Chondrus Crispus

Effect of caffeine on the growth and photosynthetic efficiency of marine macroalgae

2021 ◽  
Vol 64 (1) ◽  
pp. 13-18
Author(s):  
Ira Gray ◽  
Lindsay A. Green-Gavrielidis ◽  
Carol Thornber
Keyword(s):  
Growth Rate ◽  
Photosynthetic Efficiency ◽  
Sublethal Effects ◽  
Marine Species ◽  
Marine Organisms ◽  
Marine Macroalgae ◽  
Chondrus Crispus ◽  
Coastal Environments ◽  
Codium Fragile ◽  
High Concentrations

Abstract Caffeine is present in coastal environments worldwide and there is a need to assess its impact on marine organisms. Here, we exposed two species of ecologically important marine macroalgae (Chondrus crispus and Codium fragile subsp. fragile) to a suite of caffeine concentrations and measured their response. Caffeine concentrations of 10–100 ng L−1 had no significant effect on the growth rate or photosynthetic efficiency of either algae. Extremely high concentrations (100–200 mg L−1), which may occur acutely, produced sublethal effects for both species and mortality in C. fragile subsp. fragile. Our results highlight the need to understand how caffeine impacts marine species.

Observations on the theca of the motile phase of free-living and symbiotic isolates of Zooxanthella microadriatica (Freudenthal) comb.nov.

1979 ◽  
Vol 59 (1) ◽  
pp. 195-205 ◽  
Author(s):  
Alfred R. Loeblich ◽  
James L. Sherley
Keyword(s):  
Cell Cycle ◽  
Aqueous Medium ◽  
Chondrus Crispus ◽  
Free Living

A strain of Zooxanthella microadriatica (Freudenthal) comb.nov. has been isolated from decaying Chondrus crispus (L.) Stackh. The ultrastructure of this isolate has been compared to that of Z. microadriatica inhabiting Cassiopea Peron and Lesueur, 1809, sp. In an aqueous medium the cell cycle of both isolates consists of a coccoid non-motile phase alternating with a thecate motile phase.

ENDOPHYTIC ALGAE OF CHONDRUS CRISPUS (RHODOPHYTA). III. HOST SPECIFICITY1

1991 ◽  
Vol 27 (3) ◽  
pp. 448-459 ◽  
Author(s):  
Juan A. Correa ◽  
J. L. McLachlan
Keyword(s):  
Chondrus Crispus

The effect of sulphate concentration on the uptake and incorporation of [35S]sulphate in Chondrus crispus

1982 ◽  
Vol 60 (2) ◽  
pp. 162-165
Author(s):  
Susan G. Jackson ◽  
Esther L. McCandless
Keyword(s):  
Research Council ◽  
Higher Plants ◽  
National Research Council ◽  
Chondrus Crispus ◽  
Sulphate Concentration ◽  
Sulphate Uptake

The effect of different sulphate concentrations (2 × 10−5 to 10−2 M) in the labelling medium on [35S]sulphate uptake and incorporation into National Research Council of Canada gametophytic strain T4 Chondrus crispus has been investigated. Sulphate uptake appears to be multiphasic as in higher plants. An apparent Km for sulphate uptake has been determined over the range of concentrations 10−4 to 10−2 M. Sulphate incorporation is also altered at different sulphate concentrations.

scholarly journals O father where art thou? Paternity analyses in a natural population of the haploid–diploid seaweed Chondrus crispus

Heredity ◽  
2014 ◽  
Vol 114 (2) ◽  
pp. 185-194 ◽  
Author(s):  
S A Krueger-Hadfield ◽  
D Roze ◽  
J A Correa ◽  
C Destombe ◽  
M Valero
Keyword(s):  
Natural Population ◽  
Chondrus Crispus

Winter Survival and Growth of Chondrus crispus in Onshore Culture Tanks

1986 ◽  
Vol 43 (2) ◽  
pp. 263-268 ◽  
Author(s):  
Peter F. Shacklock ◽  
James S. Craigie
Keyword(s):  
Environmental Conditions ◽  
Stocking Density ◽  
Ice Cover ◽  
Winter Survival ◽  
Chondrus Crispus ◽  
Eastern Canada ◽  
Net Production ◽  
Survival And Growth ◽  
Reliable Methods ◽  
Natural Irradiance

Commercial aquaculture of Chondrus crispus in eastern Canada required the development of reliable methods for ensuring the winter survival of a healthy, vegetative inoculum. Two procedures were investigated. Agitated cultures of C. crispus (stocking density <6 kg∙m−2) in running seawater grew at average rates of 0.21–0.34 kg∙m−2∙wk−1 during two winters under natural irradiance. Cultures maintained in undisturbed, outdoor tanks of seawater over three winters showed little or no net production; however, survival was excellent provided that the stocking density remained below approximately 10 kg∙m−2. The plants were capable of resuming growth when environmental conditions improved. We found no difference in the responses of the several haploid and diploid isolates examined. Large vegetative inocula required for commercial aquaculture can be maintained simply and reliably in tanks of clean seawater if they are undisturbed and an ice cover is allowed to form.

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