Comparison and evaluation of different techniques for measuring absorption efficiency in suspension feeders
We compared several methods for measuring absorption efficiency (AE) in marine invertebrates using the horse mussel Modiolus modiolus . All were based on the principle of comparing the digestion of organic material relative to an unabsorbed tracer substance but varied in the nature of the absorbable...
Published in: | Limnology and Oceanography |
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crwiley:10.4319/lo.1994.39.1.0159 2023-12-03T10:25:50+01:00 Comparison and evaluation of different techniques for measuring absorption efficiency in suspension feeders Navarro, J. M. Thompson, R. J. 1994 http://dx.doi.org/10.4319/lo.1994.39.1.0159 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.4319%2Flo.1994.39.1.0159 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.4319/lo.1994.39.1.0159 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Limnology and Oceanography volume 39, issue 1, page 159-164 ISSN 0024-3590 1939-5590 Aquatic Science Oceanography journal-article 1994 crwiley https://doi.org/10.4319/lo.1994.39.1.0159 2023-11-09T13:30:27Z We compared several methods for measuring absorption efficiency (AE) in marine invertebrates using the horse mussel Modiolus modiolus . All were based on the principle of comparing the digestion of organic material relative to an unabsorbed tracer substance but varied in the nature of the absorbable fraction and the inert, nonabsorbed marker. For mussels feeding on natural seston, estimates of AE were slightly higher when silicate was used instead of ash (the marker commonly used in the Conover ratio method), except when the proportion of silicate in the food was very low. When mussels were fed cultured algae, estimates of AE were lower and less reproducible with either ash or silicate as the nonabsorbable fraction. The use of carbon or total chloropigments instead of organic content (weight loss on ignition) as the absorbable component in Conover’s equation gave acceptable values for AE. Differences between mean values from the various techniques were significant, but small, owing to the high precision of the measurements. The Conover ratio procedure is convenient for determining the AE of suspension feeders when the food source is natural seston, and the method provides reproducible values, but variance is greater when the inorganic content of the food is low, as in cultured algae. Article in Journal/Newspaper Modiolus modiolus Wiley Online Library (via Crossref) Limnology and Oceanography 39 1 159 164 |
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Wiley Online Library (via Crossref) |
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language |
English |
topic |
Aquatic Science Oceanography |
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Aquatic Science Oceanography Navarro, J. M. Thompson, R. J. Comparison and evaluation of different techniques for measuring absorption efficiency in suspension feeders |
topic_facet |
Aquatic Science Oceanography |
description |
We compared several methods for measuring absorption efficiency (AE) in marine invertebrates using the horse mussel Modiolus modiolus . All were based on the principle of comparing the digestion of organic material relative to an unabsorbed tracer substance but varied in the nature of the absorbable fraction and the inert, nonabsorbed marker. For mussels feeding on natural seston, estimates of AE were slightly higher when silicate was used instead of ash (the marker commonly used in the Conover ratio method), except when the proportion of silicate in the food was very low. When mussels were fed cultured algae, estimates of AE were lower and less reproducible with either ash or silicate as the nonabsorbable fraction. The use of carbon or total chloropigments instead of organic content (weight loss on ignition) as the absorbable component in Conover’s equation gave acceptable values for AE. Differences between mean values from the various techniques were significant, but small, owing to the high precision of the measurements. The Conover ratio procedure is convenient for determining the AE of suspension feeders when the food source is natural seston, and the method provides reproducible values, but variance is greater when the inorganic content of the food is low, as in cultured algae. |
format |
Article in Journal/Newspaper |
author |
Navarro, J. M. Thompson, R. J. |
author_facet |
Navarro, J. M. Thompson, R. J. |
author_sort |
Navarro, J. M. |
title |
Comparison and evaluation of different techniques for measuring absorption efficiency in suspension feeders |
title_short |
Comparison and evaluation of different techniques for measuring absorption efficiency in suspension feeders |
title_full |
Comparison and evaluation of different techniques for measuring absorption efficiency in suspension feeders |
title_fullStr |
Comparison and evaluation of different techniques for measuring absorption efficiency in suspension feeders |
title_full_unstemmed |
Comparison and evaluation of different techniques for measuring absorption efficiency in suspension feeders |
title_sort |
comparison and evaluation of different techniques for measuring absorption efficiency in suspension feeders |
publisher |
Wiley |
publishDate |
1994 |
url |
http://dx.doi.org/10.4319/lo.1994.39.1.0159 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.4319%2Flo.1994.39.1.0159 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.4319/lo.1994.39.1.0159 |
genre |
Modiolus modiolus |
genre_facet |
Modiolus modiolus |
op_source |
Limnology and Oceanography volume 39, issue 1, page 159-164 ISSN 0024-3590 1939-5590 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.4319/lo.1994.39.1.0159 |
container_title |
Limnology and Oceanography |
container_volume |
39 |
container_issue |
1 |
container_start_page |
159 |
op_container_end_page |
164 |
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1784274898482364416 |