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Feeding selectivity and egg production of Calanus helgolandicus in the English Channel

Feeding selectivity and egg production of Calanus helgolandicus in the English Channel
Feeding selectivity and egg production of Calanus helgolandicus in the English Channel
Copepods are able to discriminate between different foods on the basis of particle size and nutritional quality. However, the extent of selective feeding behavior and the mechanisms controlling it in the field are still poorly understood. In this study, we investigated selective feeding behavior and egg production for Calanus helgolandicus feeding on natural phytoplankton (using high-performance liquid chromatography techniques), and egg production, at a coastal station off Plymouth with the annual phytoplankton cycle from July 1996 to June 1997. The phytoplankton succession included biomass peaks of dinoflagellates, prymnesiophytes, and diatoms. C. helgolandicus showed little selective feeding behavior throughout the study with a slight preference for diatoms. The influence of the diet composition on egg production was analyzed using forward stepwise regression methods. Prymnesiophytes and diatoms were shown to have positive effects whereas the effect of dinoflagellates was negative. The effect of the different phytoplankton peaks is analyzed and discussed in relation to the phytoplankton taxonomic composition and dietary diversity.
0024-3590
44-54
Irigoien, X.
25aa155a-3d8c-4ea8-a7c4-7f7be79b5efa
Harris, R.P.
a507befb-c320-4af6-a48c-41ce48ca9e70
Head, R.N.
547cf2b4-08b0-4fa2-b51c-62e3470dd439
Cummings, D.
3c87ece0-fb3b-4212-8173-88aa01529f2f
Harbour, B.
4fa7543d-51dd-4471-b74d-b5a69a818a40
Meyer-Harms, B.
61a8901d-d433-46ef-ba5e-e99e39068e5d
Irigoien, X.
25aa155a-3d8c-4ea8-a7c4-7f7be79b5efa
Harris, R.P.
a507befb-c320-4af6-a48c-41ce48ca9e70
Head, R.N.
547cf2b4-08b0-4fa2-b51c-62e3470dd439
Cummings, D.
3c87ece0-fb3b-4212-8173-88aa01529f2f
Harbour, B.
4fa7543d-51dd-4471-b74d-b5a69a818a40
Meyer-Harms, B.
61a8901d-d433-46ef-ba5e-e99e39068e5d

Irigoien, X., Harris, R.P., Head, R.N., Cummings, D., Harbour, B. and Meyer-Harms, B. (2000) Feeding selectivity and egg production of Calanus helgolandicus in the English Channel. Limnology and Oceanography, 45 (1), 44-54.

Record type: Article

Abstract

Copepods are able to discriminate between different foods on the basis of particle size and nutritional quality. However, the extent of selective feeding behavior and the mechanisms controlling it in the field are still poorly understood. In this study, we investigated selective feeding behavior and egg production for Calanus helgolandicus feeding on natural phytoplankton (using high-performance liquid chromatography techniques), and egg production, at a coastal station off Plymouth with the annual phytoplankton cycle from July 1996 to June 1997. The phytoplankton succession included biomass peaks of dinoflagellates, prymnesiophytes, and diatoms. C. helgolandicus showed little selective feeding behavior throughout the study with a slight preference for diatoms. The influence of the diet composition on egg production was analyzed using forward stepwise regression methods. Prymnesiophytes and diatoms were shown to have positive effects whereas the effect of dinoflagellates was negative. The effect of the different phytoplankton peaks is analyzed and discussed in relation to the phytoplankton taxonomic composition and dietary diversity.

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Published date: 2000

Identifiers

Local EPrints ID: 1275
URI: https://eprints.soton.ac.uk/id/eprint/1275
ISSN: 0024-3590
PURE UUID: c1ce64b8-5215-4f4a-b986-fd58718ca8cb

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Date deposited: 07 Apr 2004
Last modified: 17 Jul 2017 17:17

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