Mechanisms of Suspension Feeding in Bivalves: Resolution of Current Controversies by Means of Endoscopy
Controversy concerning the mechanism of suspension feeding in bivalves centers around whether particle capture and transport on the gills (ctenidia) is accomplished via mucociliary or hydrodynamic action. Evidence for and against these fundamentally different processes has been based on examinations...
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| Veröffentlicht in: | Limnology and oceanography 1993-03, Vol.38 (2), p.265-272 |
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| container_title | Limnology and oceanography |
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| creator | Ward, J. E. MacDonald, B. A. Thompson, R. J. Beninger, P. G. |
| description | Controversy concerning the mechanism of suspension feeding in bivalves centers around whether particle capture and transport on the gills (ctenidia) is accomplished via mucociliary or hydrodynamic action. Evidence for and against these fundamentally different processes has been based on examinations of isolated feeding structures and dissected specimens, techniques that may produce artifactual data owing to the trauma associated with the procedures. In the present study, in vivo observations of the ctenidia of undisturbed bivalves, made with a fiber-optic endoscope and video image-analysis system, revealed that the two mechanisms are not mutually exclusive. Both mucociliary and hydrodynamic mechanisms function concurrenlty at different sites on the ctenidia, thereby minimizing particle loss and optimizing particle transport efficiently. The importanc of mucus in the normal feeding process of bivalves is confirmed. These findings refute results of previous studies that used surgically invasive techniques and emphasize the importance of making observations on morphologically intact specimens. |
| doi_str_mv | 10.4319/lo.1993.38.2.0265 |
| format | Article |
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Both mucociliary and hydrodynamic mechanisms function concurrenlty at different sites on the ctenidia, thereby minimizing particle loss and optimizing particle transport efficiently. The importanc of mucus in the normal feeding process of bivalves is confirmed. These findings refute results of previous studies that used surgically invasive techniques and emphasize the importance of making observations on morphologically intact specimens.</description><identifier>ISSN: 0024-3590</identifier><identifier>EISSN: 1939-5590</identifier><identifier>DOI: 10.4319/lo.1993.38.2.0265</identifier><identifier>CODEN: LIOCAH</identifier><language>eng</language><publisher>Waco, TX: American Society of Limnology and Oceanography</publisher><subject>Animals ; Biochemistry. Physiology. Immunology ; Biological and medical sciences ; Bivalvia ; Brackish ; Chemical suspensions ; Cilia ; Freshwater ; Fundamental and applied biological sciences. 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In the present study, in vivo observations of the ctenidia of undisturbed bivalves, made with a fiber-optic endoscope and video image-analysis system, revealed that the two mechanisms are not mutually exclusive. Both mucociliary and hydrodynamic mechanisms function concurrenlty at different sites on the ctenidia, thereby minimizing particle loss and optimizing particle transport efficiently. The importanc of mucus in the normal feeding process of bivalves is confirmed. These findings refute results of previous studies that used surgically invasive techniques and emphasize the importance of making observations on morphologically intact specimens.</description><subject>Animals</subject><subject>Biochemistry. Physiology. Immunology</subject><subject>Biological and medical sciences</subject><subject>Bivalvia</subject><subject>Brackish</subject><subject>Chemical suspensions</subject><subject>Cilia</subject><subject>Freshwater</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Hydrodynamics</subject><subject>Ingestion</subject><subject>Invertebrates</subject><subject>Marine</subject><subject>Mollusca</subject><subject>Mucus</subject><subject>Mussels</subject><subject>Palps</subject><subject>Particle velocity</subject><subject>Physiology. 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| ispartof | Limnology and oceanography, 1993-03, Vol.38 (2), p.265-272 |
| issn | 0024-3590 1939-5590 |
| language | eng |
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| source | Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; Jstor Complete Legacy; Alma/SFX Local Collection |
| subjects | Animals Biochemistry. Physiology. Immunology Biological and medical sciences Bivalvia Brackish Chemical suspensions Cilia Freshwater Fundamental and applied biological sciences. Psychology Hydrodynamics Ingestion Invertebrates Marine Mollusca Mucus Mussels Palps Particle velocity Physiology. Development Slurries |
| title | Mechanisms of Suspension Feeding in Bivalves: Resolution of Current Controversies by Means of Endoscopy |
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