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...

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Autores principales:	Poul S. Larsen, Hans Ulrik Riisgård
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	sponges choanocyte pump pressure drop growth allometric scaling Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581
Acceso en línea:	https://doaj.org/article/d08d24d0dc70474ab7a2fff976f29000
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spelling	oai:doaj.org-article:d08d24d0dc70474ab7a2fff976f290002021-11-25T18:05:21ZPumping Rate and Size of Demosponges—Towards an Understanding Using Modeling10.3390/jmse91113082077-1312https://doaj.org/article/d08d24d0dc70474ab7a2fff976f290002021-11-01T00:00:00Zhttps://www.mdpi.com/2077-1312/9/11/1308https://doaj.org/toc/2077-1312Filter-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.Poul S. LarsenHans Ulrik RiisgårdMDPI AGarticlespongeschoanocyte pumppressure dropgrowthallometric scalingNaval architecture. Shipbuilding. Marine engineeringVM1-989OceanographyGC1-1581ENJournal of Marine Science and Engineering, Vol 9, Iss 1308, p 1308 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	sponges choanocyte pump pressure drop growth allometric scaling Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581
spellingShingle	sponges choanocyte pump pressure drop growth allometric scaling Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581 Poul S. Larsen Hans Ulrik Riisgård Pumping Rate and Size of Demosponges—Towards an Understanding Using Modeling
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.
format	article
author	Poul S. Larsen Hans Ulrik Riisgård
author_facet	Poul S. Larsen Hans Ulrik Riisgård
author_sort	Poul S. Larsen
title	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_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_sort	pumping rate and size of demosponges—towards an understanding using modeling
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/d08d24d0dc70474ab7a2fff976f29000
work_keys_str_mv	AT poulslarsen pumpingrateandsizeofdemospongestowardsanunderstandingusingmodeling AT hansulrikriisgard pumpingrateandsizeofdemospongestowardsanunderstandingusingmodeling
_version_	1718411645621895168

Pumping Rate and Size of Demosponges—Towards an Understanding Using Modeling

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