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Comparison of five methods for estimating growth of Calanus helgolandicus later developmental stages (CV–CVI)

Comparison of five methods for estimating growth of Calanus helgolandicus later developmental stages (CV–CVI)
Comparison of five methods for estimating growth of Calanus helgolandicus later developmental stages (CV–CVI)
The activity of the enzymes aminoacyl-tRNA synthetases (AARS) in adult females and males and copepodites stage V of Calanus helgolandicus was studied at the L4 time-series station in the English Channel from June 2002 to December 2003. AARS activity was explored as an index of somatic growth in the laboratory as well as in the field by comparison with other methods of measuring growth: (1) the direct method (Heinle in Chesapeake Sci 7:59–74, 1966), (2) the weight increment (WI) method, (3) the Hirst and Bunker (HB) equation (Limnol Oceanogr 48(5):1988–2010, 2003) and (4) the egg production (EPR) method. AARS activity showed a significant correlation with the direct measurement of growth in the laboratory (R 2=0.55). However, the correlation was lower for growth assessed either with the WI or the HB approaches in the field (R 2=0.05–0.17). Female AARS activity showed a positive correlation with specific EPR during the reproductive season (R 2=0.40) but no relationship was found during the non-reproductive period.
0025-3162
1367-1375
Yebra, L.
e912decd-986d-4c04-9a5c-5919437ea99a
Harris, R.P.
a507befb-c320-4af6-a48c-41ce48ca9e70
Smith, T.
8af789d2-e097-40af-9632-514501c3c2f1
Yebra, L.
e912decd-986d-4c04-9a5c-5919437ea99a
Harris, R.P.
a507befb-c320-4af6-a48c-41ce48ca9e70
Smith, T.
8af789d2-e097-40af-9632-514501c3c2f1

Yebra, L., Harris, R.P. and Smith, T. (2005) Comparison of five methods for estimating growth of Calanus helgolandicus later developmental stages (CV–CVI). Marine Biology, 147 (6), 1367-1375. (doi:10.1007/s00227-005-0039-9).

Record type: Article

Abstract

The activity of the enzymes aminoacyl-tRNA synthetases (AARS) in adult females and males and copepodites stage V of Calanus helgolandicus was studied at the L4 time-series station in the English Channel from June 2002 to December 2003. AARS activity was explored as an index of somatic growth in the laboratory as well as in the field by comparison with other methods of measuring growth: (1) the direct method (Heinle in Chesapeake Sci 7:59–74, 1966), (2) the weight increment (WI) method, (3) the Hirst and Bunker (HB) equation (Limnol Oceanogr 48(5):1988–2010, 2003) and (4) the egg production (EPR) method. AARS activity showed a significant correlation with the direct measurement of growth in the laboratory (R 2=0.55). However, the correlation was lower for growth assessed either with the WI or the HB approaches in the field (R 2=0.05–0.17). Female AARS activity showed a positive correlation with specific EPR during the reproductive season (R 2=0.40) but no relationship was found during the non-reproductive period.

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Published date: July 2005

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Local EPrints ID: 54675
URI: http://eprints.soton.ac.uk/id/eprint/54675
ISSN: 0025-3162
PURE UUID: 3be0a260-aecf-4637-bd6d-9fbd9614ff1c

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Date deposited: 17 Jul 2008
Last modified: 15 Mar 2024 10:49

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Contributors

Author: L. Yebra
Author: R.P. Harris
Author: T. Smith

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