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Metabolic rate and growth in the temperate bivalve Mercenaria mercenaria at a biogeographic limit, from the English Channel

Metabolic rate and growth in the temperate bivalve Mercenaria mercenaria at a biogeographic limit, from the English Channel
Metabolic rate and growth in the temperate bivalve Mercenaria mercenaria at a biogeographic limit, from the English Channel
Metabolism and growth rate of the hard clam, Mercenaria mercenaria, were investigated in a population invasive to Southampton Water, southern England. An individual metabolic model expressed as a function of soft tissue dry mass was fitted to data of 18 individuals (log (VO2) = −1.952 + 0.543 • log (DM); F1,16 = 201.18, P < 0.001, r2 = 0.926). A von Bertalanffy growth function was fitted to 227 size-at-age data pairs of 18 individuals (Ht = 80.13 • (1 − e−0.149 • (t−0.542)); r2 = 0.927). Individual age-specific somatic production was calculated, demonstrating increase with age to a maximum of 3.88 kJ y−1 at ten years old followed by decrease, and individual age-specific annual respiration was calculated, demonstrating asymptotic increase with age to 231.37 kJ y−1 at 30 years old. Results found here lie within the physiological tolerances reported across the biogeographical range, suggesting that the species' biogeographical limitation in the UK to Southampton Water results from ecological rather than physiological factors.
0025-3154
1019-1023
Brown, Alastair
909f34db-bc9c-403f-ba8f-31aee1c00161
Heilmayer, O.
cbad0ced-292f-41ad-a42f-7ff810750457
Thatje, S.
f1011fe3-1048-40c0-97c1-e93b796e6533
Brown, Alastair
909f34db-bc9c-403f-ba8f-31aee1c00161
Heilmayer, O.
cbad0ced-292f-41ad-a42f-7ff810750457
Thatje, S.
f1011fe3-1048-40c0-97c1-e93b796e6533

Brown, Alastair, Heilmayer, O. and Thatje, S. (2010) Metabolic rate and growth in the temperate bivalve Mercenaria mercenaria at a biogeographic limit, from the English Channel. Journal of the Marine Biological Association of the United Kingdom, 90 (5), 1019-1023. (doi:10.1017/S0025315409991470).

Record type: Article

Abstract

Metabolism and growth rate of the hard clam, Mercenaria mercenaria, were investigated in a population invasive to Southampton Water, southern England. An individual metabolic model expressed as a function of soft tissue dry mass was fitted to data of 18 individuals (log (VO2) = −1.952 + 0.543 • log (DM); F1,16 = 201.18, P < 0.001, r2 = 0.926). A von Bertalanffy growth function was fitted to 227 size-at-age data pairs of 18 individuals (Ht = 80.13 • (1 − e−0.149 • (t−0.542)); r2 = 0.927). Individual age-specific somatic production was calculated, demonstrating increase with age to a maximum of 3.88 kJ y−1 at ten years old followed by decrease, and individual age-specific annual respiration was calculated, demonstrating asymptotic increase with age to 231.37 kJ y−1 at 30 years old. Results found here lie within the physiological tolerances reported across the biogeographical range, suggesting that the species' biogeographical limitation in the UK to Southampton Water results from ecological rather than physiological factors.

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Accepted/In Press date: February 2010
e-pub ahead of print date: 1 July 2010
Published date: August 2010
Organisations: Ocean and Earth Science, Southampton Marine & Maritime Institute

Identifiers

Local EPrints ID: 68840
URI: https://eprints.soton.ac.uk/id/eprint/68840
ISSN: 0025-3154
PURE UUID: 644d1c06-3597-4936-aa77-036f60ddf69c

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Date deposited: 06 Oct 2009
Last modified: 25 Jan 2018 17:31

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