Consumer growth linked to diet and RNA-P stoichiometry: Response of Bosmina to variation in riverine food resources

Kumud Acharya, Paul A. Bukaveckas, Jeffrey D. Jack, Marcia Kyle, James Elser

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Feeding experiments were performed with riverine Bosmina to investigate how their somatic growth rate responded to variation in food resources arising from changing hydrodynamic conditions. Experimental manipulations of food quality and quantity were achieved by diluting riverine suspended particulate matter (seston) to obtain a range of food concentrations and by amending natural seston with laboratory-grown Scenedesmus acutus. Bosmina experienced food limitation during periods of elevated discharge when the P content of seston was low (C:P > 600). Growth rates covaried with body RNA and P contents (R2 = 0.96 and 0.86, respectively; content expressed as percent of dry mass), which is consistent with the hypothesis that high growth rates require increased allocation to P-rich ribosomal RNA and that high seston C:P induces P limitation in riverine Bosmina. P limitation arises in riverine consumers of riverine seston when hydrologic conditions favor terrestrial inputs, sediment resuspension, and low algal productivity, thereby resulting in seston fractions dominated by P-poor materials. During low discharge, riverine seston was P-rich relative to Bosmina requirements and growth rates were decoupled from body P content. Bosmina RNA content was strongly and linearly related to growth over a broad range of resource conditions, suggesting that it may be a useful surrogate to assess dietary sufficiency of food resources in natural settings.

Original languageEnglish (US)
Pages (from-to)1859-1869
Number of pages11
JournalLimnology and Oceanography
Volume51
Issue number4
StatePublished - Jul 2006

Fingerprint

seston
stoichiometry
RNA
diet
Scenedesmus
food
resource
food quality
natural resources
hydrodynamics
particulates
ribosomal RNA
sediments
food limitation
suspended particulate matter
resuspension
productivity
sediment

ASJC Scopus subject areas

  • Oceanography
  • Aquatic Science

Cite this

Consumer growth linked to diet and RNA-P stoichiometry : Response of Bosmina to variation in riverine food resources. / Acharya, Kumud; Bukaveckas, Paul A.; Jack, Jeffrey D.; Kyle, Marcia; Elser, James.

In: Limnology and Oceanography, Vol. 51, No. 4, 07.2006, p. 1859-1869.

Research output: Contribution to journalArticle

Acharya, Kumud ; Bukaveckas, Paul A. ; Jack, Jeffrey D. ; Kyle, Marcia ; Elser, James. / Consumer growth linked to diet and RNA-P stoichiometry : Response of Bosmina to variation in riverine food resources. In: Limnology and Oceanography. 2006 ; Vol. 51, No. 4. pp. 1859-1869.
@article{c151da893a394451b149101dbc7d36e0,
title = "Consumer growth linked to diet and RNA-P stoichiometry: Response of Bosmina to variation in riverine food resources",
abstract = "Feeding experiments were performed with riverine Bosmina to investigate how their somatic growth rate responded to variation in food resources arising from changing hydrodynamic conditions. Experimental manipulations of food quality and quantity were achieved by diluting riverine suspended particulate matter (seston) to obtain a range of food concentrations and by amending natural seston with laboratory-grown Scenedesmus acutus. Bosmina experienced food limitation during periods of elevated discharge when the P content of seston was low (C:P > 600). Growth rates covaried with body RNA and P contents (R2 = 0.96 and 0.86, respectively; content expressed as percent of dry mass), which is consistent with the hypothesis that high growth rates require increased allocation to P-rich ribosomal RNA and that high seston C:P induces P limitation in riverine Bosmina. P limitation arises in riverine consumers of riverine seston when hydrologic conditions favor terrestrial inputs, sediment resuspension, and low algal productivity, thereby resulting in seston fractions dominated by P-poor materials. During low discharge, riverine seston was P-rich relative to Bosmina requirements and growth rates were decoupled from body P content. Bosmina RNA content was strongly and linearly related to growth over a broad range of resource conditions, suggesting that it may be a useful surrogate to assess dietary sufficiency of food resources in natural settings.",
author = "Kumud Acharya and Bukaveckas, {Paul A.} and Jack, {Jeffrey D.} and Marcia Kyle and James Elser",
year = "2006",
month = "7",
language = "English (US)",
volume = "51",
pages = "1859--1869",
journal = "Limnology and Oceanography",
issn = "0024-3590",
publisher = "American Society of Limnology and Oceanography Inc.",
number = "4",

}

TY - JOUR

T1 - Consumer growth linked to diet and RNA-P stoichiometry

T2 - Response of Bosmina to variation in riverine food resources

AU - Acharya, Kumud

AU - Bukaveckas, Paul A.

AU - Jack, Jeffrey D.

AU - Kyle, Marcia

AU - Elser, James

PY - 2006/7

Y1 - 2006/7

N2 - Feeding experiments were performed with riverine Bosmina to investigate how their somatic growth rate responded to variation in food resources arising from changing hydrodynamic conditions. Experimental manipulations of food quality and quantity were achieved by diluting riverine suspended particulate matter (seston) to obtain a range of food concentrations and by amending natural seston with laboratory-grown Scenedesmus acutus. Bosmina experienced food limitation during periods of elevated discharge when the P content of seston was low (C:P > 600). Growth rates covaried with body RNA and P contents (R2 = 0.96 and 0.86, respectively; content expressed as percent of dry mass), which is consistent with the hypothesis that high growth rates require increased allocation to P-rich ribosomal RNA and that high seston C:P induces P limitation in riverine Bosmina. P limitation arises in riverine consumers of riverine seston when hydrologic conditions favor terrestrial inputs, sediment resuspension, and low algal productivity, thereby resulting in seston fractions dominated by P-poor materials. During low discharge, riverine seston was P-rich relative to Bosmina requirements and growth rates were decoupled from body P content. Bosmina RNA content was strongly and linearly related to growth over a broad range of resource conditions, suggesting that it may be a useful surrogate to assess dietary sufficiency of food resources in natural settings.

AB - Feeding experiments were performed with riverine Bosmina to investigate how their somatic growth rate responded to variation in food resources arising from changing hydrodynamic conditions. Experimental manipulations of food quality and quantity were achieved by diluting riverine suspended particulate matter (seston) to obtain a range of food concentrations and by amending natural seston with laboratory-grown Scenedesmus acutus. Bosmina experienced food limitation during periods of elevated discharge when the P content of seston was low (C:P > 600). Growth rates covaried with body RNA and P contents (R2 = 0.96 and 0.86, respectively; content expressed as percent of dry mass), which is consistent with the hypothesis that high growth rates require increased allocation to P-rich ribosomal RNA and that high seston C:P induces P limitation in riverine Bosmina. P limitation arises in riverine consumers of riverine seston when hydrologic conditions favor terrestrial inputs, sediment resuspension, and low algal productivity, thereby resulting in seston fractions dominated by P-poor materials. During low discharge, riverine seston was P-rich relative to Bosmina requirements and growth rates were decoupled from body P content. Bosmina RNA content was strongly and linearly related to growth over a broad range of resource conditions, suggesting that it may be a useful surrogate to assess dietary sufficiency of food resources in natural settings.

UR - http://www.scopus.com/inward/record.url?scp=33746876703&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33746876703&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:33746876703

VL - 51

SP - 1859

EP - 1869

JO - Limnology and Oceanography

JF - Limnology and Oceanography

SN - 0024-3590

IS - 4

ER -