Evidence of phenotypic plasticity and local adaption in metabolic rates between components of the Icelandic cod (gadus morhua l.) stock

Timothy B. Grabowski; Shawn P. Young; Lísa A. Libungan; Agnar Steinarsson; Gurún Marteinsdóttir

doi:10.1007/s10641-009-9534-z

Evidence of phenotypic plasticity and local adaption in metabolic rates between components of the Icelandic cod (gadus morhua l.) stock

Timothy B. Grabowski
, Shawn P. Young
, Lísa A. Libungan
, Agnar Steinarsson
, Gurún Marteinsdóttir

Faculty of Life and Environmental Sciences

University of Iceland

Research output: Contribution to journal › Article › peer-review

Abstract

Phenotypic plasticity and local adaptations are important considerations in delineating population structure of marine fishes and critical to their conservation and management. We compared the weight-specific oxygen consumption rates (VO₂/M) of juvenile cod from the northern and southern components of the Icelandic stock acclimated to 4.0°C, 8.5°C, and 12.6°C and their metabolic response to abrupt temperatures changes within this range. Southern individuals exhibited VO₂/M up to 50% higher than their northern counterparts when tested at their acclimation temperature. However, northern fish generally experienced greater changes in VO₂/M, three to six-fold increases, relative to that expected at acclimation when moved to higher temperatures. Southern cod showed a greater decrease in VO₂/M when exposed to lower temperatures. Our results indicate physiological differences exist between the northern and southern components of the Icelandic cod stock and warrant considering them as two distinct populations.

Original language	English
Pages (from-to)	361-370
Number of pages	10
Journal	Environmental Biology of Fishes
Volume	86
Issue number	3
DOIs	https://doi.org/10.1007/s10641-009-9534-z
Publication status	Published - Nov 2009

Bibliographical note

Funding Information: Acknowledgments We thank Á. Gunnarsson and T. Sveinsson of the Marine Research Institute, Iceland; Capt. J. Á. Jónsson and the crew of the Friðrik Sigurðsson; Capt. G. Gunnarsson and the crew of the Þorleifur EA; and J.P. Jónasson, B. McAdam, and L. Stefansdóttir of the University of Iceland for their assistance in capturing broodstock for this experiment. We also thank M. Oddgeirsson, N. Jónsson, K. Sigurðsson and R. Guðmundsson at the Marine Research Laboratory in Grindavík for their assistance in hatching, rearing, and maintaining the larval and juvenile cod used in this study. Funding for this study was provided by the Marine Research Institute, Iceland; the University of Iceland Research Fund; and the Fisheries Project Fund of the Icelandic Ministry of Fisheries and Agriculture. The comments and suggestions of four anonymous reviewers greatly improved an earlier draft of this manuscript.

Other keywords

Atlantic cod
Chamber respirometry
Common garden experiment
Iceland
Population structure
Thermal physiology

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10.1007/s10641-009-9534-z

Cite this

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title = "Evidence of phenotypic plasticity and local adaption in metabolic rates between components of the Icelandic cod (gadus morhua l.) stock",

abstract = "Phenotypic plasticity and local adaptations are important considerations in delineating population structure of marine fishes and critical to their conservation and management. We compared the weight-specific oxygen consumption rates (VO2/M) of juvenile cod from the northern and southern components of the Icelandic stock acclimated to 4.0°C, 8.5°C, and 12.6°C and their metabolic response to abrupt temperatures changes within this range. Southern individuals exhibited VO2/M up to 50\% higher than their northern counterparts when tested at their acclimation temperature. However, northern fish generally experienced greater changes in VO2/M, three to six-fold increases, relative to that expected at acclimation when moved to higher temperatures. Southern cod showed a greater decrease in VO2/M when exposed to lower temperatures. Our results indicate physiological differences exist between the northern and southern components of the Icelandic cod stock and warrant considering them as two distinct populations.",

keywords = "Atlantic cod, Chamber respirometry, Common garden experiment, Iceland, Population structure, Thermal physiology",

author = "Grabowski, \{Timothy B.\} and Young, \{Shawn P.\} and Libungan, \{L{\'i}sa A.\} and Agnar Steinarsson and Gur{\'u}n Marteinsd{\'o}ttir",

note = "Funding Information: Acknowledgments We thank {\'A}. Gunnarsson and T. Sveinsson of the Marine Research Institute, Iceland; Capt. J. {\'A}. J{\'o}nsson and the crew of the Fri{\dh}rik Sigur{\dh}sson; Capt. G. Gunnarsson and the crew of the {\TH}orleifur EA; and J.P. J{\'o}nasson, B. McAdam, and L. Stefansd{\'o}ttir of the University of Iceland for their assistance in capturing broodstock for this experiment. We also thank M. Oddgeirsson, N. J{\'o}nsson, K. Sigur{\dh}sson and R. Gu{\dh}mundsson at the Marine Research Laboratory in Grindav{\'i}k for their assistance in hatching, rearing, and maintaining the larval and juvenile cod used in this study. Funding for this study was provided by the Marine Research Institute, Iceland; the University of Iceland Research Fund; and the Fisheries Project Fund of the Icelandic Ministry of Fisheries and Agriculture. The comments and suggestions of four anonymous reviewers greatly improved an earlier draft of this manuscript.",

year = "2009",

month = nov,

doi = "10.1007/s10641-009-9534-z",

language = "English",

volume = "86",

pages = "361--370",

journal = "Environmental Biology of Fishes",

issn = "0378-1909",

publisher = "Springer Science and Business Media B.V.",

number = "3",

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T1 - Evidence of phenotypic plasticity and local adaption in metabolic rates between components of the Icelandic cod (gadus morhua l.) stock

AU - Grabowski, Timothy B.

AU - Young, Shawn P.

AU - Libungan, Lísa A.

AU - Steinarsson, Agnar

AU - Marteinsdóttir, Gurún

N1 - Funding Information: Acknowledgments We thank Á. Gunnarsson and T. Sveinsson of the Marine Research Institute, Iceland; Capt. J. Á. Jónsson and the crew of the Friðrik Sigurðsson; Capt. G. Gunnarsson and the crew of the Þorleifur EA; and J.P. Jónasson, B. McAdam, and L. Stefansdóttir of the University of Iceland for their assistance in capturing broodstock for this experiment. We also thank M. Oddgeirsson, N. Jónsson, K. Sigurðsson and R. Guðmundsson at the Marine Research Laboratory in Grindavík for their assistance in hatching, rearing, and maintaining the larval and juvenile cod used in this study. Funding for this study was provided by the Marine Research Institute, Iceland; the University of Iceland Research Fund; and the Fisheries Project Fund of the Icelandic Ministry of Fisheries and Agriculture. The comments and suggestions of four anonymous reviewers greatly improved an earlier draft of this manuscript.

PY - 2009/11

Y1 - 2009/11

N2 - Phenotypic plasticity and local adaptations are important considerations in delineating population structure of marine fishes and critical to their conservation and management. We compared the weight-specific oxygen consumption rates (VO2/M) of juvenile cod from the northern and southern components of the Icelandic stock acclimated to 4.0°C, 8.5°C, and 12.6°C and their metabolic response to abrupt temperatures changes within this range. Southern individuals exhibited VO2/M up to 50% higher than their northern counterparts when tested at their acclimation temperature. However, northern fish generally experienced greater changes in VO2/M, three to six-fold increases, relative to that expected at acclimation when moved to higher temperatures. Southern cod showed a greater decrease in VO2/M when exposed to lower temperatures. Our results indicate physiological differences exist between the northern and southern components of the Icelandic cod stock and warrant considering them as two distinct populations.

AB - Phenotypic plasticity and local adaptations are important considerations in delineating population structure of marine fishes and critical to their conservation and management. We compared the weight-specific oxygen consumption rates (VO2/M) of juvenile cod from the northern and southern components of the Icelandic stock acclimated to 4.0°C, 8.5°C, and 12.6°C and their metabolic response to abrupt temperatures changes within this range. Southern individuals exhibited VO2/M up to 50% higher than their northern counterparts when tested at their acclimation temperature. However, northern fish generally experienced greater changes in VO2/M, three to six-fold increases, relative to that expected at acclimation when moved to higher temperatures. Southern cod showed a greater decrease in VO2/M when exposed to lower temperatures. Our results indicate physiological differences exist between the northern and southern components of the Icelandic cod stock and warrant considering them as two distinct populations.

KW - Atlantic cod

KW - Chamber respirometry

KW - Common garden experiment

KW - Iceland

KW - Population structure

KW - Thermal physiology

UR - https://www.scopus.com/pages/publications/70449525450

U2 - 10.1007/s10641-009-9534-z

DO - 10.1007/s10641-009-9534-z

M3 - Article

SN - 0378-1909

VL - 86

SP - 361

EP - 370

JO - Environmental Biology of Fishes

JF - Environmental Biology of Fishes

IS - 3

ER -

Evidence of phenotypic plasticity and local adaption in metabolic rates between components of the Icelandic cod (gadus morhua l.) stock

Abstract

Bibliographical note

Other keywords

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