Regulation of spirocyst discharge in the model sea anemone, Nematostella vectensis

Regulation of spirocyst discharge in the model sea anemone, Nematostella vectensis

Test probes were touched to tentacles to investigate whether discharge of spirocysts likely is regulated by hair bundle mechanoreceptors. Significantly more spirocysts discharge onto test probes in the presence of vibrations at 11-15 Hz as compared to 0 Hz. Adding N-acetylneuraminic acid, NANA, shif...

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Bibliographic Details
Published in:Marine biology Vol. 157; no. 5; pp. 1041 - 1047
Main Authors: Krayesky, Sherry L, Mahoney, Janna L, Kinler, Katherine M, Peltier, Stacey, Calais, Warnesha, Allaire, Kate, Watson, Glen M
Format: Journal Article
Language:English
Published: Berlin/Heidelberg Berlin/Heidelberg : Springer-Verlag 01-05-2010
Springer-Verlag
Springer
Springer Nature B.V
Subjects:
Animal and plant ecology
Animal, plant and microbial ecology
Biological and medical sciences
Biomedical and Life Sciences
Cnidaria. Ctenaria
Freshwater & Marine Ecology
Fundamental and applied biological sciences. Psychology
Invertebrates
Life Sciences
Marine
Marine & Freshwater Sciences
Marine biology
Microbiology
Nematostella vectensis
Oceanography
Original Paper
Physiological aspects
Prey
Probes
Sea water ecosystems
Sea-anemones
Seawater
Sugar
Swimming
Synecology
Vibration
Zoology
United States
Test Probe
Maximal Discharge
Hair Bundle
Hair Cell
Prey Capture
Coelenterata
Models
Invertebrata
Cnidaria
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Summary:Test probes were touched to tentacles to investigate whether discharge of spirocysts likely is regulated by hair bundle mechanoreceptors. Significantly more spirocysts discharge onto test probes in the presence of vibrations at 11-15 Hz as compared to 0 Hz. Adding N-acetylneuraminic acid, NANA, shifts maximal discharge of spirocysts upwards to 36-40 Hz, and possibly to 21-25 Hz. In contrast, NANA shifts maximal discharge of basitrichous isorhiza nematocysts downwards to 1-20 Hz. Thus, discharge of cnidae (‘stinging capsules') is differentially regulated according to the type of cnida. Furthermore, it appears that chemodetection of N-acetylated sugars is not a prerequisite to capturing prey because, in seawater alone, maximal discharge of cnidae occurs at frequencies overlapping movements of calmly swimming prey. Nevertheless, chemodetection of N-acetylated sugars broadens the range of frequencies stimulating maximal discharge of cnidae and, therefore, likely enhances prey capture.
Bibliography:http://dx.doi.org/10.1007/s00227-009-1384-x
ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:0025-3162
1432-1793
DOI:10.1007/s00227-009-1384-x