A 28 Day Sediment Bioassay with the Marine Polychaete,

2009 ◽  
pp. 201-201-15
Author(s):  
TM Dillon ◽  
DW Moore ◽  
DJ Reish
Keyword(s):  
Sediment Bioassay ◽  
Marine Polychaete

Formation and Function of the Primary Tube During Settlement and Metamorphosis of the Marine Polychaete Hydroides elegans (Haswell, 1883) (Serpulidae)

2021 ◽  
Vol 240 (2) ◽  
pp. 82-94
Author(s):  
Megan J. Huggett ◽  
Eugenio J. Carpizo-Ituarte ◽  
Brian T. Nedved ◽  
Michael G. Hadfield
Keyword(s):  
Hydroides Elegans ◽  
Settlement And Metamorphosis ◽  
Marine Polychaete ◽  
And Function

scholarly journals An ecological genetic analysis of the settling behaviour of a marine polychaete:

Heredity ◽  
1978 ◽  
Vol 40 (1) ◽  
pp. 1-12 ◽  
Author(s):  
Trudy F C Mackay ◽  
Roger W Doyle
Keyword(s):  
Genetic Analysis ◽  
Settling Behaviour ◽  
Marine Polychaete

scholarly journals A comprehensive fate map by intracellular injection of identified blastomeres in the marine polychaete Capitella teleta

EvoDevo ◽  
2010 ◽  
Vol 1 (1) ◽  
pp. 8 ◽  
Author(s):  
Néva P Meyer ◽  
Michael J Boyle ◽  
Mark Q Martindale ◽  
Elaine C Seaver
Keyword(s):  
Fate Map ◽  
Intracellular Injection ◽  
Marine Polychaete ◽  
Capitella Teleta

Reduced seawater pH alters marine biofilms with impacts for marine polychaete larval settlement

2021 ◽  
pp. 105291
Author(s):  
Nadjejda Espinel-Velasco ◽  
Sven P. Tobias-Hünefeldt ◽  
Sam Karelitz ◽  
Linn J. Hoffmann ◽  
Sergio E. Morales ◽  
...  
Keyword(s):  
Larval Settlement ◽  
Seawater Ph ◽  
Marine Biofilms ◽  
Marine Polychaete

scholarly journals Modulation of Human Complement System by Antimicrobial Peptide Arenicin-1 from Arenicola marina

Marine Drugs ◽  
2018 ◽  
Vol 16 (12) ◽  
pp. 480 ◽  
Author(s):  
Ekaterina Umnyakova ◽  
Nikolay Gorbunov ◽  
Alexander Zhakhov ◽  
Ilia Krenev ◽  
Tatiana Ovchinnikova ◽  
...  
Keyword(s):  
Antimicrobial Peptides ◽  
Antimicrobial Peptide ◽  
Complement System ◽  
Complement Activation ◽  
Marine Invertebrates ◽  
Cytotoxic Agents ◽  
Arenicola Marina ◽  
Low Concentrations ◽  
Marine Polychaete ◽  
Hypothetical Mechanism

Antimicrobial peptides from marine invertebrates are known not only to act like cytotoxic agents, but they also can display some additional activities in mammalian organisms. In particular, these peptides can modulate the complement system as was described for tachyplesin, a peptide from the horseshoe crab. In this work, we investigated the influence on complement activation of the antimicrobial peptide arenicin-1 from the marine polychaete Arenicola marina. To study effects of arenicin on complement activation in human blood serum, we used hemolytic assays of two types, with antibody sensitized sheep erythrocytes and rabbit erythrocytes. Complement activation was also assessed, by the level of C3a production that was measured by ELISA. We found that the effect of arenicin depends on its concentration. At relatively low concentrations the peptide stimulates complement activation and lysis of target erythrocytes, whereas at higher concentrations arenicin acts as a complement inhibitor. A hypothetical mechanism of peptide action is proposed, suggesting its interaction with two complement proteins, C1q and C3. The results lead to the possibility of the development of new approaches for therapy of diseases connected with complement dysregulation, using peptide regulators derived from natural antimicrobial peptides of invertebrates.

scholarly journals Response of the marine polychaete Hediste diversicolor to controlled laboratory cadmium exposure: preliminary results

2018 ◽  
Vol 5 ◽  
Author(s):  
Carmen Pedro ◽  
Mafalda M.R.S. Catarino ◽  
Teresa Baptista ◽  
Susana M. F. Ferreira ◽  
Ana Pombo ◽  
...  
Keyword(s):  
Cadmium Exposure ◽  
Hediste Diversicolor ◽  
Preliminary Results ◽  
Marine Polychaete

Mn2+ Ions Pass Through Ca2+ Channels in Myoepithelial Cells

1979 ◽  
Vol 82 (1) ◽  
pp. 227-238
Author(s):  
M. ANDERSON
Keyword(s):  
Sea Water ◽  
Myoepithelial Cells ◽  
Fold Change ◽  
Applied Current ◽  
Bathing Medium ◽  
Current Pulses ◽  
Marine Polychaete ◽  
Intracellular Stimulation ◽  
Pass Through ◽  
Ca2 Channels

1. Intracellular recordings were made from the myoepithelial cells of the proventriculus of the marine polychaete worm Syllis spongiphila. Overshooting responses were elicited either by carbamylcholine added to the bathing medium or by directly applied intracellular current pulses. 2. In control artificial sea water (ASW) directly applied current pulses elicited regenerative responses of 68–119 mV in amplitude and 70–1800 ms in duration; these responses were associated with contractions of the myoepithelial cells. 3. Both pharmacologically and electrically elicited responses were reversibly abolished in Ca-free ASW and were unaffected by TTX or lowsodium solutions. Regenerative responses were elicited by direct intracellular stimulation in calcium-free ASW containing 1 mM-B2+ or 10 mM-Sr2+. Directly elicited responses were blocked reversibly in ASW containing calcium and 15-20 mM-Co2+ or 2.5-10 mM-Ni2+; they were blocked irreversibly in ASW containing calcium and 10 mM-La3+ or 100 μM-Zn2+. 4. Regenerative responses were elicited in Ca-free solutions containing 10-50 mM-Mn2+; these responses were not associated with contractions, were consistently of longer duration than responses elicited in control ASW, and were blocked by 20 mM-Co2+ or 10 mM-La3+. The overshoots of Mn2+ responses elicited in both Na-free and Na-containing, Ca-free solutions increased as the external concentration of Mn2+ was increased, with a slope of about 27 mV per 10-fold change in concentration of Mn2+. In Cacontaining solutions the slope was reduced to about 15mV per 10-fold change. 5. The results indicate that the myoepithelial cells generate Ca-spikes and that Mn2+ ions, in addition to Sr2+ and Ba2+ ions, pass through the Ca2+ channels of the myoepithelial cell membranes. Although Mn^ can replace Ca2+ in generating spikes, it apparently cannot replace Ca2+ in initiating contraction, and it many compete with Ca2+ in activating repolarization of the cell.

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