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Development, validation and field application of an RNA-based growth index in juvenile plaice Pleuronectes platessa

Development, validation and field application of an RNA-based growth index in juvenile plaice Pleuronectes platessa
Development, validation and field application of an RNA-based growth index in juvenile plaice Pleuronectes platessa
A general mechanism relating RNA concentration and growth rate is derived from four physiological assumptions and developed into a growth index for juvenile plaice Pleuronectes platessa. The index describing instantaneous growth rates (G, day?1) in the laboratory with the lowest Akaike information criterion with small-sample bias adjustment was a function of RNA concentration (R, inline image), temperature (T, ° K), body mass (M, g) and DNA concentration (D, inline image): G = ?0 + ?RR + ?TT + ?T2T2 + ?MM + ?DD + ?RTRT. RNA concentration began to respond to changes in feeding conditions within 8 days, suggesting that the index reflects growth rate in the short-term. Furthermore, the index distinguished between rapid growth and negative growth of juvenile P. platessa measured directly in laboratory and field enclosures, respectively. An application of the RNA-based growth index at two beaches on the west coast of Scotland suggested that the growth of juvenile P. platessa varies considerably in space and time and is submaximum in late summer.
food condition, habitat quality, maximum growth, model selection, physiological mechanisms, RNA:DNA
0022-1112
2181-2209
Ciotti, B.J.
034551e4-d770-4cd2-80cc-b95c677938d2
Targett, T.E.
7c2f9c56-5a26-4e29-a5bb-388fc1240335
Nash, R.D.M.
9f436c35-e5a1-4221-8117-1ef8ac66eb8b
Batty, R.S.
b7b8f5fd-a6e5-48f6-abcc-c70c1879036a
Burrows, M.T.
89ce4c9d-01e6-4ae8-a4a2-5a0d8bb09ec2
Geffen, A.J.
a54aa273-4e8c-4246-a8a4-645c3bef5025
Ciotti, B.J.
034551e4-d770-4cd2-80cc-b95c677938d2
Targett, T.E.
7c2f9c56-5a26-4e29-a5bb-388fc1240335
Nash, R.D.M.
9f436c35-e5a1-4221-8117-1ef8ac66eb8b
Batty, R.S.
b7b8f5fd-a6e5-48f6-abcc-c70c1879036a
Burrows, M.T.
89ce4c9d-01e6-4ae8-a4a2-5a0d8bb09ec2
Geffen, A.J.
a54aa273-4e8c-4246-a8a4-645c3bef5025

Ciotti, B.J., Targett, T.E., Nash, R.D.M., Batty, R.S., Burrows, M.T. and Geffen, A.J. (2010) Development, validation and field application of an RNA-based growth index in juvenile plaice Pleuronectes platessa. Journal of Fish Biology, 77, 2181-2209. (doi:10.1111/j.1095-8649.2010.02786.x). (PMID:21155778)

Record type: Article

Abstract

A general mechanism relating RNA concentration and growth rate is derived from four physiological assumptions and developed into a growth index for juvenile plaice Pleuronectes platessa. The index describing instantaneous growth rates (G, day?1) in the laboratory with the lowest Akaike information criterion with small-sample bias adjustment was a function of RNA concentration (R, inline image), temperature (T, ° K), body mass (M, g) and DNA concentration (D, inline image): G = ?0 + ?RR + ?TT + ?T2T2 + ?MM + ?DD + ?RTRT. RNA concentration began to respond to changes in feeding conditions within 8 days, suggesting that the index reflects growth rate in the short-term. Furthermore, the index distinguished between rapid growth and negative growth of juvenile P. platessa measured directly in laboratory and field enclosures, respectively. An application of the RNA-based growth index at two beaches on the west coast of Scotland suggested that the growth of juvenile P. platessa varies considerably in space and time and is submaximum in late summer.

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More information

Published date: December 2010
Keywords: food condition, habitat quality, maximum growth, model selection, physiological mechanisms, RNA:DNA
Organisations: Ocean and Earth Science

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Local EPrints ID: 360280
URI: http://eprints.soton.ac.uk/id/eprint/360280
ISSN: 0022-1112
PURE UUID: 09e98b67-9690-4dd2-add1-f0138636e503

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Date deposited: 03 Dec 2013 09:21
Last modified: 16 Jul 2019 21:16

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