| Circulation of fluids in the gastrovascular system of a stoloniferan octocoral. | |
| | |
MedLine Citation:
|
PMID: 20972256 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
Cilia-based transport systems characterize sponges and placozoans. Cilia are employed in cnidarian gastrovascular systems as well, but typically function in concert with muscular contractions. Previous reports suggest that anthozoans may be an exception to this pattern, utilizing only cilia in their gastrovascular systems. With an inverted microscope and digital image analysis, we used stoloniferan octocoral colonies growing on microscope cover glass to quantitatively describe the movement of fluids in this system for the first time. Flow in stolons (diameter ≈300 μm) is simultaneously bidirectional, with average velocities of 100-200 μm/s in each direction. Velocities are maximal immediately adjacent to the stolon wall and decrease to a minimum in the center of the stolon. Flow velocity is unaffected by stolonal contractions, suggesting that muscular peristalsis is not a factor in propelling the flow. Stolon intersections (diameter ≈500 μm) occur below polyps and serve as traffic roundabouts with unidirectional, circular flow. Such cilia-driven transport may be the plesiomorphic state for the gastrovascular system of cnidarians. |
| | |
Authors:
|
Austin P Parrin; Sarah E Netherton; Lori S Bross; Catherine S McFadden; Neil W Blackstone |
Related Documents
:
|
8971256 - Middle cerebral artery blood velocity and plasma catecholamines during exercise. 12820076 - Effect of head elevation on cerebral blood flow velocity in post-cerebral operation pat... 1396936 - Intracranial blood flow velocities during seizures and generalized epileptic discharges. 2337036 - A simplified normalized ejection phase index measured by doppler echocardiography for t... 10064646 - Betahistine increases vestibular blood flow. 11988816 - Effect of senescence on ocular blood flow in the retina, neuroretinal rim and lamina cr... |
Publication Detail:
|
Type: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S. |
Journal Detail:
|
Title: The Biological bulletin Volume: 219 ISSN: 1939-8697 ISO Abbreviation: Biol. Bull. Publication Date: 2010 Oct |
Date Detail:
|
Created Date: 2010-10-25 Completed Date: 2011-01-31 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 2984727R Medline TA: Biol Bull Country: United States |
Other Details:
|
Languages: eng Pagination: 112-21 Citation Subset: IM |
Affiliation:
|
Department of Biological Sciences, Northern Illinois University, DeKalb, Illinois 60115, USA. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Animal Structures
/
physiology* Animals Anthozoa / physiology* Biological Transport Cilia / physiology* Image Processing, Computer-Assisted Microscopy / methods |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Bioluminescent organs of two deep-sea arrow worms, Eukrohnia fowleri and Caecosagitta macrocephala, ...
Next Document: Effects of satiation and starvation on nematocyst discharge, prey killing, and ingestion in two spec...