Pumping Rate and Size of Demosponges—Towards an Understanding Using Modeling
Filter-feeding sponges pump large amounts of water and contribute significantly to grazing impact, matter transport and nutrient cycling in many marine benthic communities. For ecological studies it is therefore of interest to be able to estimate the pumping rate of different species from their volu...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-11-01
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| Series: | Journal of Marine Science and Engineering |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2077-1312/9/11/1308 |
| _version_ | 1797509810207326208 |
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| author | Poul S. Larsen Hans Ulrik Riisgård |
| author_facet | Poul S. Larsen Hans Ulrik Riisgård |
| author_sort | Poul S. Larsen |
| collection | DOAJ |
| description | Filter-feeding sponges pump large amounts of water and contribute significantly to grazing impact, matter transport and nutrient cycling in many marine benthic communities. For ecological studies it is therefore of interest to be able to estimate the pumping rate of different species from their volume size or osculum cross-sectional area by means of experimentally determined allometric correlations. To help understand allometric data correlations and observed large variations of volume-specific pumping rate among species we developed a model that determines the pumping rate as a function of the size (volume) of a tubular-type demosponge described by 4 geometric length scales. The model relies on a choanocyte-pump model and standard pressure loss relations for flow through the aquiferous system, and density and pumping rate per choanocyte is assumed to be constant. By selecting different possibilities for increase of the length scales, which may also simulate different growth forms, we demonstrate that the model can imitate the experimental allometric correlations. It is concluded that the observed dependence of pumping rate on size is primarily governed by the hydraulics of pump performance and pressure losses of the aquiferous system rather than, e.g., decreasing density of choanocytes with increasing sponge size. |
| first_indexed | 2024-03-10T05:23:01Z |
| format | Article |
| id | doaj.art-d08d24d0dc70474ab7a2fff976f29000 |
| institution | Directory Open Access Journal |
| issn | 2077-1312 |
| language | English |
| last_indexed | 2024-03-10T05:23:01Z |
| publishDate | 2021-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Marine Science and Engineering |
| spelling | doaj.art-d08d24d0dc70474ab7a2fff976f290002023-11-22T23:54:49ZengMDPI AGJournal of Marine Science and Engineering2077-13122021-11-01911130810.3390/jmse9111308Pumping Rate and Size of Demosponges—Towards an Understanding Using ModelingPoul S. Larsen0Hans Ulrik Riisgård1Department of Mechanical Engineering, Technical University of Denmark, 2800 Kgs. Lyngby, DenmarkMarine Biological Research Centre, University of Southern Denmark, 5300 Kerteminde, DenmarkFilter-feeding sponges pump large amounts of water and contribute significantly to grazing impact, matter transport and nutrient cycling in many marine benthic communities. For ecological studies it is therefore of interest to be able to estimate the pumping rate of different species from their volume size or osculum cross-sectional area by means of experimentally determined allometric correlations. To help understand allometric data correlations and observed large variations of volume-specific pumping rate among species we developed a model that determines the pumping rate as a function of the size (volume) of a tubular-type demosponge described by 4 geometric length scales. The model relies on a choanocyte-pump model and standard pressure loss relations for flow through the aquiferous system, and density and pumping rate per choanocyte is assumed to be constant. By selecting different possibilities for increase of the length scales, which may also simulate different growth forms, we demonstrate that the model can imitate the experimental allometric correlations. It is concluded that the observed dependence of pumping rate on size is primarily governed by the hydraulics of pump performance and pressure losses of the aquiferous system rather than, e.g., decreasing density of choanocytes with increasing sponge size.https://www.mdpi.com/2077-1312/9/11/1308spongeschoanocyte pumppressure dropgrowthallometric scaling |
| spellingShingle | Poul S. Larsen Hans Ulrik Riisgård Pumping Rate and Size of Demosponges—Towards an Understanding Using Modeling Journal of Marine Science and Engineering sponges choanocyte pump pressure drop growth allometric scaling |
| title | Pumping Rate and Size of Demosponges—Towards an Understanding Using Modeling |
| title_full | Pumping Rate and Size of Demosponges—Towards an Understanding Using Modeling |
| title_fullStr | Pumping Rate and Size of Demosponges—Towards an Understanding Using Modeling |
| title_full_unstemmed | Pumping Rate and Size of Demosponges—Towards an Understanding Using Modeling |
| title_short | Pumping Rate and Size of Demosponges—Towards an Understanding Using Modeling |
| title_sort | pumping rate and size of demosponges towards an understanding using modeling |
| topic | sponges choanocyte pump pressure drop growth allometric scaling |
| url | https://www.mdpi.com/2077-1312/9/11/1308 |
| work_keys_str_mv | AT poulslarsen pumpingrateandsizeofdemospongestowardsanunderstandingusingmodeling AT hansulrikriisgard pumpingrateandsizeofdemospongestowardsanunderstandingusingmodeling |