Egg production and associated losses of carbon, nitrogen and fatty acids from maternal biomass in Calanus finmarchicus before the spring bloom

Daniel Justin Mayor, Thomas R. Anderson, David W. Pond, Xabier Irigoien

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

We present concurrent data on ingestion, egg production and the loss of maternal biomass in pre-spring bloom female Calanus finmarchicus incubated under conditions representative of those in situ in the North Atlantic. A balanced metabolic budget was constructed and used to examine the relative importance of ingestion and biomass for fuelling egg production during the incubations. Ingested carbon was not sufficient to meet the observed demands for egg production. More than 80% of the carbon utilised by the females was instead derived from their biomass. Fatty acid analysis demonstrated that the storage reserves, 20:1 (n-9) and 22:1 (n-11), were virtually absent before experimentation began, and therefore could not have been used to supply the carbon required for egg production during the incubations. The C:N mass-specific ratio of the biomass utilised was 4.1, suggesting that the females had instead catabolised protein in order to meet their metabolic demands. These results suggest that C finmarchicus adopts a sacrificial reproductive strategy when food availability is low. (C) 2009 Elsevier B.V. All rights reserved.

Original languageEnglish
Pages (from-to)505-510
Number of pages6
JournalJournal of Marine Systems
Volume78
Issue number4
Early online date21 Feb 2009
DOIs
Publication statusPublished - Nov 2009

Keywords

  • Calanus finmarchicus
  • Feeding experiments
  • Egg production
  • Body reserves
  • Fatty acids
  • North Atlantic
  • Semelparity
  • frequency time-series
  • biochemical-composition
  • gonad development
  • Northern Norway
  • Norwegian Sea
  • Weathership M
  • body-weight
  • reproduction
  • copepods
  • plankton

Cite this

Egg production and associated losses of carbon, nitrogen and fatty acids from maternal biomass in Calanus finmarchicus before the spring bloom. / Mayor, Daniel Justin; Anderson, Thomas R.; Pond, David W.; Irigoien, Xabier.

In: Journal of Marine Systems, Vol. 78, No. 4, 11.2009, p. 505-510.

Research output: Contribution to journalArticle

Mayor, Daniel Justin ; Anderson, Thomas R. ; Pond, David W. ; Irigoien, Xabier. / Egg production and associated losses of carbon, nitrogen and fatty acids from maternal biomass in Calanus finmarchicus before the spring bloom. In: Journal of Marine Systems. 2009 ; Vol. 78, No. 4. pp. 505-510.
@article{96f34c9c73544b77827d10379a6fc8f6,
title = "Egg production and associated losses of carbon, nitrogen and fatty acids from maternal biomass in Calanus finmarchicus before the spring bloom",
abstract = "We present concurrent data on ingestion, egg production and the loss of maternal biomass in pre-spring bloom female Calanus finmarchicus incubated under conditions representative of those in situ in the North Atlantic. A balanced metabolic budget was constructed and used to examine the relative importance of ingestion and biomass for fuelling egg production during the incubations. Ingested carbon was not sufficient to meet the observed demands for egg production. More than 80{\%} of the carbon utilised by the females was instead derived from their biomass. Fatty acid analysis demonstrated that the storage reserves, 20:1 (n-9) and 22:1 (n-11), were virtually absent before experimentation began, and therefore could not have been used to supply the carbon required for egg production during the incubations. The C:N mass-specific ratio of the biomass utilised was 4.1, suggesting that the females had instead catabolised protein in order to meet their metabolic demands. These results suggest that C finmarchicus adopts a sacrificial reproductive strategy when food availability is low. (C) 2009 Elsevier B.V. All rights reserved.",
keywords = "Calanus finmarchicus, Feeding experiments, Egg production, Body reserves, Fatty acids, North Atlantic, Semelparity, frequency time-series, biochemical-composition, gonad development, Northern Norway, Norwegian Sea, Weathership M, body-weight, reproduction, copepods, plankton",
author = "Mayor, {Daniel Justin} and Anderson, {Thomas R.} and Pond, {David W.} and Xabier Irigoien",
year = "2009",
month = "11",
doi = "10.1016/j.jmarsys.2008.12.019",
language = "English",
volume = "78",
pages = "505--510",
journal = "Journal of Marine Systems",
issn = "0924-7963",
publisher = "Elsevier",
number = "4",

}

TY - JOUR

T1 - Egg production and associated losses of carbon, nitrogen and fatty acids from maternal biomass in Calanus finmarchicus before the spring bloom

AU - Mayor, Daniel Justin

AU - Anderson, Thomas R.

AU - Pond, David W.

AU - Irigoien, Xabier

PY - 2009/11

Y1 - 2009/11

N2 - We present concurrent data on ingestion, egg production and the loss of maternal biomass in pre-spring bloom female Calanus finmarchicus incubated under conditions representative of those in situ in the North Atlantic. A balanced metabolic budget was constructed and used to examine the relative importance of ingestion and biomass for fuelling egg production during the incubations. Ingested carbon was not sufficient to meet the observed demands for egg production. More than 80% of the carbon utilised by the females was instead derived from their biomass. Fatty acid analysis demonstrated that the storage reserves, 20:1 (n-9) and 22:1 (n-11), were virtually absent before experimentation began, and therefore could not have been used to supply the carbon required for egg production during the incubations. The C:N mass-specific ratio of the biomass utilised was 4.1, suggesting that the females had instead catabolised protein in order to meet their metabolic demands. These results suggest that C finmarchicus adopts a sacrificial reproductive strategy when food availability is low. (C) 2009 Elsevier B.V. All rights reserved.

AB - We present concurrent data on ingestion, egg production and the loss of maternal biomass in pre-spring bloom female Calanus finmarchicus incubated under conditions representative of those in situ in the North Atlantic. A balanced metabolic budget was constructed and used to examine the relative importance of ingestion and biomass for fuelling egg production during the incubations. Ingested carbon was not sufficient to meet the observed demands for egg production. More than 80% of the carbon utilised by the females was instead derived from their biomass. Fatty acid analysis demonstrated that the storage reserves, 20:1 (n-9) and 22:1 (n-11), were virtually absent before experimentation began, and therefore could not have been used to supply the carbon required for egg production during the incubations. The C:N mass-specific ratio of the biomass utilised was 4.1, suggesting that the females had instead catabolised protein in order to meet their metabolic demands. These results suggest that C finmarchicus adopts a sacrificial reproductive strategy when food availability is low. (C) 2009 Elsevier B.V. All rights reserved.

KW - Calanus finmarchicus

KW - Feeding experiments

KW - Egg production

KW - Body reserves

KW - Fatty acids

KW - North Atlantic

KW - Semelparity

KW - frequency time-series

KW - biochemical-composition

KW - gonad development

KW - Northern Norway

KW - Norwegian Sea

KW - Weathership M

KW - body-weight

KW - reproduction

KW - copepods

KW - plankton

U2 - 10.1016/j.jmarsys.2008.12.019

DO - 10.1016/j.jmarsys.2008.12.019

M3 - Article

VL - 78

SP - 505

EP - 510

JO - Journal of Marine Systems

JF - Journal of Marine Systems

SN - 0924-7963

IS - 4

ER -