In situ variability in phenoloxidase activity in the shore crab, Carcinus maenas (L)
In situ variability in phenoloxidase activity in the shore crab, Carcinus maenas (L)
This paper presents data from a 13-month investigation of the variation in phenoloxidase enzyme activity associated with the changing seasonal conditions in an estuarine ecosystem. Haemolymph samples were collected from shore crabs sampled in the field on alternate spring tides and ancillary measures of water temperature and salinity, total suspended particulate and organic load and bacterial population were made to provide data on the changing nature of the sublittoral ecosystem. Bacterial densities in the water column tended to be low (less than 7500 colonies ml(-1)) throughout the study except during September and October 1994 when mean recorded densities were 9200 and 12,500 colonies ml(-1), respectively. This peak in bacterial abundance correlated (P < 0.05) with the maximum phenoloxidase enzyme activities recorded. Fluctuations in the activity of phenoloxidase were not attributable to changes in the circulating haemocyte population and the collected data is explained in terms of a stimulation of those processes involved in the formation of prophenoloxidase, the zymogen precursor of phenoloxidase, in response to the presence of bacterially derived compounds present in the water column.
267-271
Hawkins, Lawrence
9c4d1845-82db-4305-acb5-31b218ac9c0e
Hauton, Christopher
7706f6ba-4497-42b2-8c6d-00df81676331
Williams, J.A.
2b6837bb-4353-4228-94a8-de4deb43c588
1 June 1997
Hawkins, Lawrence
9c4d1845-82db-4305-acb5-31b218ac9c0e
Hauton, Christopher
7706f6ba-4497-42b2-8c6d-00df81676331
Williams, J.A.
2b6837bb-4353-4228-94a8-de4deb43c588
Hawkins, Lawrence, Hauton, Christopher and Williams, J.A.
(1997)
In situ variability in phenoloxidase activity in the shore crab, Carcinus maenas (L).
Comparative Biochemistry and Physiology Part B: Biochemistry and Molecular Biology, 117 (2), .
(doi:10.1016/S0305-0491(97)00050-3).
Abstract
This paper presents data from a 13-month investigation of the variation in phenoloxidase enzyme activity associated with the changing seasonal conditions in an estuarine ecosystem. Haemolymph samples were collected from shore crabs sampled in the field on alternate spring tides and ancillary measures of water temperature and salinity, total suspended particulate and organic load and bacterial population were made to provide data on the changing nature of the sublittoral ecosystem. Bacterial densities in the water column tended to be low (less than 7500 colonies ml(-1)) throughout the study except during September and October 1994 when mean recorded densities were 9200 and 12,500 colonies ml(-1), respectively. This peak in bacterial abundance correlated (P < 0.05) with the maximum phenoloxidase enzyme activities recorded. Fluctuations in the activity of phenoloxidase were not attributable to changes in the circulating haemocyte population and the collected data is explained in terms of a stimulation of those processes involved in the formation of prophenoloxidase, the zymogen precursor of phenoloxidase, in response to the presence of bacterially derived compounds present in the water column.
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Published date: 1 June 1997
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Local EPrints ID: 453669
URI: http://eprints.soton.ac.uk/id/eprint/453669
ISSN: 1096-4959
PURE UUID: 7b8e1854-20bb-48ae-ae07-46ca77047276
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Date deposited: 20 Jan 2022 17:45
Last modified: 17 Mar 2024 02:43
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J.A. Williams
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