A new angle on microscopic suspension feeders near boundaries

Rachel E. Pepper, Marcus Roper, Sangjin Ryu, Nobuyoshi Matsumoto, Moeto Nagai, Howard A. Stone

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Microscopic sessile suspension feeders are a critical component in aquatic ecosystems, acting as an intermediate trophic stage between bacteria and higher eukaryotic taxa. Because they live attached to boundaries, it has long been thought that recirculation of the feeding currents produced by sessile suspension feeders inhibits their ability to access fresh fluid. However, previous models for the feeding flows of these organisms assume that they feed by pushing fluid perpendicular to surfaces they live upon, whereas we observe that sessile suspension feeders often feed at an angle to these boundaries. Using experiments and calculations, we show that living suspension feeders (Vorticella) likely actively regulate the angle that they feed relative to a substratum. We then use theory and simulations to show that angled feeding increases nutrient and particle uptake by reducing the reprocessing of depleted water. This work resolves an open question of how a key class of suspension-feeding organisms escapes physical limitations associated with their sessile lifestyle.

Original languageEnglish (US)
Pages (from-to)1796-1804
Number of pages9
JournalBiophysical journal
Volume105
Issue number8
DOIs
StatePublished - Oct 15 2013

Fingerprint

Suspensions
Aptitude
Ecosystem
Life Style
Bacteria
Food
Water

ASJC Scopus subject areas

  • Biophysics

Cite this

Pepper, R. E., Roper, M., Ryu, S., Matsumoto, N., Nagai, M., & Stone, H. A. (2013). A new angle on microscopic suspension feeders near boundaries. Biophysical journal, 105(8), 1796-1804. https://doi.org/10.1016/j.bpj.2013.08.029

A new angle on microscopic suspension feeders near boundaries. / Pepper, Rachel E.; Roper, Marcus; Ryu, Sangjin; Matsumoto, Nobuyoshi; Nagai, Moeto; Stone, Howard A.

In: Biophysical journal, Vol. 105, No. 8, 15.10.2013, p. 1796-1804.

Research output: Contribution to journalArticle

Pepper, RE, Roper, M, Ryu, S, Matsumoto, N, Nagai, M & Stone, HA 2013, 'A new angle on microscopic suspension feeders near boundaries', Biophysical journal, vol. 105, no. 8, pp. 1796-1804. https://doi.org/10.1016/j.bpj.2013.08.029
Pepper RE, Roper M, Ryu S, Matsumoto N, Nagai M, Stone HA. A new angle on microscopic suspension feeders near boundaries. Biophysical journal. 2013 Oct 15;105(8):1796-1804. https://doi.org/10.1016/j.bpj.2013.08.029
Pepper, Rachel E. ; Roper, Marcus ; Ryu, Sangjin ; Matsumoto, Nobuyoshi ; Nagai, Moeto ; Stone, Howard A. / A new angle on microscopic suspension feeders near boundaries. In: Biophysical journal. 2013 ; Vol. 105, No. 8. pp. 1796-1804.
@article{3d1074346ba546768d70d149f9a88d4e,
title = "A new angle on microscopic suspension feeders near boundaries",
abstract = "Microscopic sessile suspension feeders are a critical component in aquatic ecosystems, acting as an intermediate trophic stage between bacteria and higher eukaryotic taxa. Because they live attached to boundaries, it has long been thought that recirculation of the feeding currents produced by sessile suspension feeders inhibits their ability to access fresh fluid. However, previous models for the feeding flows of these organisms assume that they feed by pushing fluid perpendicular to surfaces they live upon, whereas we observe that sessile suspension feeders often feed at an angle to these boundaries. Using experiments and calculations, we show that living suspension feeders (Vorticella) likely actively regulate the angle that they feed relative to a substratum. We then use theory and simulations to show that angled feeding increases nutrient and particle uptake by reducing the reprocessing of depleted water. This work resolves an open question of how a key class of suspension-feeding organisms escapes physical limitations associated with their sessile lifestyle.",
author = "Pepper, {Rachel E.} and Marcus Roper and Sangjin Ryu and Nobuyoshi Matsumoto and Moeto Nagai and Stone, {Howard A.}",
year = "2013",
month = "10",
day = "15",
doi = "10.1016/j.bpj.2013.08.029",
language = "English (US)",
volume = "105",
pages = "1796--1804",
journal = "Biophysical Journal",
issn = "0006-3495",
publisher = "Biophysical Society",
number = "8",

}

TY - JOUR

T1 - A new angle on microscopic suspension feeders near boundaries

AU - Pepper, Rachel E.

AU - Roper, Marcus

AU - Ryu, Sangjin

AU - Matsumoto, Nobuyoshi

AU - Nagai, Moeto

AU - Stone, Howard A.

PY - 2013/10/15

Y1 - 2013/10/15

N2 - Microscopic sessile suspension feeders are a critical component in aquatic ecosystems, acting as an intermediate trophic stage between bacteria and higher eukaryotic taxa. Because they live attached to boundaries, it has long been thought that recirculation of the feeding currents produced by sessile suspension feeders inhibits their ability to access fresh fluid. However, previous models for the feeding flows of these organisms assume that they feed by pushing fluid perpendicular to surfaces they live upon, whereas we observe that sessile suspension feeders often feed at an angle to these boundaries. Using experiments and calculations, we show that living suspension feeders (Vorticella) likely actively regulate the angle that they feed relative to a substratum. We then use theory and simulations to show that angled feeding increases nutrient and particle uptake by reducing the reprocessing of depleted water. This work resolves an open question of how a key class of suspension-feeding organisms escapes physical limitations associated with their sessile lifestyle.

AB - Microscopic sessile suspension feeders are a critical component in aquatic ecosystems, acting as an intermediate trophic stage between bacteria and higher eukaryotic taxa. Because they live attached to boundaries, it has long been thought that recirculation of the feeding currents produced by sessile suspension feeders inhibits their ability to access fresh fluid. However, previous models for the feeding flows of these organisms assume that they feed by pushing fluid perpendicular to surfaces they live upon, whereas we observe that sessile suspension feeders often feed at an angle to these boundaries. Using experiments and calculations, we show that living suspension feeders (Vorticella) likely actively regulate the angle that they feed relative to a substratum. We then use theory and simulations to show that angled feeding increases nutrient and particle uptake by reducing the reprocessing of depleted water. This work resolves an open question of how a key class of suspension-feeding organisms escapes physical limitations associated with their sessile lifestyle.

UR - http://www.scopus.com/inward/record.url?scp=84886062473&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84886062473&partnerID=8YFLogxK

U2 - 10.1016/j.bpj.2013.08.029

DO - 10.1016/j.bpj.2013.08.029

M3 - Article

VL - 105

SP - 1796

EP - 1804

JO - Biophysical Journal

JF - Biophysical Journal

SN - 0006-3495

IS - 8

ER -