Abstract
Natural feeding rates of Copepodite Stages IV and V, and adult female Calanus glacialis (Jaschnov) and Copepodite Stage V and adult female C. finmarchicus (Gunnerus) were estimated using fluorescence analysis of gut contents. Measurements were made on copepods sampled from arctic waters east of Svalbard (Barents Sea) during the spring phytoplankton increase, in the period from 27 May to 13 June, 1983. Observations on Copepodite Stages IV and V and adult female C. glacialis suggest that the gastric evacuation rate is independent of developmental stage, whereas C. finmarchicus Copepodite Stage V showed a lower gastric evacuation rate than adult females. Gut fullness displayed a low correlation with the ambient chlorophyll concentrations. Ingestion rates calculated for C. glacialis were 0.3, 2.3, and 11.0 μg C h-1 for Copepodite Stages IV and V and adult females, respectively. Copepodite Stage V and adult female C. finmarchicus ingested 0.9 and 1.1 μg C h-1 at a temperature of ca.-1.0°C. The maximum ingestion rate in terms of percent body carbon d-1 was higher for adult female C. glacialis and C. finmarchicus than for the respective Copepodite Stage V's. The results are discussed both in relation to the physiological state of the species and to the environmental conditions.
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Boyd, C. M., S. L. Smith and T. J. Cowles: Grazing patterns of copepods in the upwelling system off Peru. Limnol. Oceanogr. 25, 583–596 (1980)
Båmstedt, U.: Diel variations in the nutritional physiology of Calanus glacialis from Lat. 78°N in the summer. Mar. Biol. 29, 257–267 (1984)
Båmstedt, U. and A. Ervik: Local variations in size and activity among Calanus finmarchicus and Metridia longa (Copepoda, Calanoida) overwintering on the west coast of Norway. J. Plankton Res. 6, 843–857 (1984)
Båmstedt, U. and K. S. Tande: Respiration and excretion rates of Calanus glacialis in arctic waters of the Barents Sea. Mar. Biol. 87, 259–266 (1985)
Dagg, M. J. and D. W. Grill: Natural feeding rates of Centrophages typicus females in the New York Bight. Limnol. Oceanogr. 25, 597–609 (1980)
Dagg, M. J. and K. D. Wyman: Natural ingestion rates of the copepods Neocalanus plumchrus and N. cristatus calculated from gut contents. Mar. Ecol. Prog. Ser. 13, 37–46 (1983)
Elliott, J. M. and L. Persson: The estimation of daily rates of food consumption for fish. J. Anim. Ecol. 47, 977–991 (1978)
Gauld, D. T.: A periotrophic membrane in calanoid copepods. Nature, Lond. 179, 325–326 (1957)
Haney, J. F. and D. J. Hall: Diel vertical migration and filterfeeding activities of Daphnia. Arch. Hydrobiol. 75, 413–441 (1975)
Huntley, M.: Non-selective, nonsaturated feeding by three calanoid copepod species in the Labrador Sea. Limnol. Oceanogr. 26, 831–842 (1981)
Jaschnov, W. A.: The origin of the species Calanus finmarchicus s.l. Zool. Zh. 37, 838–845 (1958). [Transl. from Russian by P. B. Wells, Scottish Marine Biological Association, Oceanography Laboratory Edinburgh, 1959]
Jobling, M.: Mathematical models of gastric emptying and the estimation of daily rates of food consumption for fish. J. Fish Biol. 19, 245–257 (1981)
Kiørboe, T., F. Møhlenberg and H. Nicolajsen: Ingestion rate and gut clearance in the planktonic copepod Centrophages hamatus (Lilljeborg) in relation to food concentration and temperature. Ophelia 21, 181–194 (1982)
Mackas, D. and R. Bohrer: Fluorescence analysis of zooplankton gut contents and an investigation of diel feeding patterns. J. exp. mar. Biol. Ecol. 25, 77–85 (1976)
Mullin, M.: Some factors affecting the feeding of marine copepods of the genus Calanus. Limnol. Oceanogr. 8, 239–250 (1963)
Omori, M.: Variations of length, weight, respiratory rate, and chemical composition of Calanus cristatus in relation to its food and feeding. In: Marine food chains, pp 113–126. Ed. by J. H. Steele. Edinburgh: Oliver & Boyd 1970
Taguchii, S. and H. Ishii: Shipboard experiments on respiration, excretion and grazing of Calanus cristatus and C. plumchrus (Copepoda) in the Northern North Pacific. In: Biological oceanography of the North Pacific Ocean, pp 419–431. Ed. by A. Y. Takenouti. Tokyo: Idemitsu Shoten 1972
Tande, K. S.: Ecological investigations on the zooplankton community of Balsfjorden, northern Norway: generation cycles, body content of carbon and nitrogen related to overwintering and reproduction in the copepod Calanus finmarchicus (Gunnerus). J. exp. mar. Biol. Ecol. 62, 129–142 (1982)
Tande, K. S., A. Hassel and D. Slagstad: Gonad maturation and possible life cycle strategies in Calanus finmarchicus (Gunnerus) and C. glacialis (Jaschnov) in the northwestern part of the Barents Sea. In: Marine biology of polar regions and effects of stress on marine organisms, pp 141–155. Ed. by J. S. Gray and M. E. Christiansen. Chichester: Wiley 1985. (Proc. 18th Eur. mar. Biol. Symp. 1983)
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Communicated by J. Mauchline, Oban
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Tande, K.S., Båmstedt, U. Grazing rates of the copepods Calanus glacialis and C. finmarchicus in arctic waters of the Barents Sea. Mar. Biol. 87, 251–258 (1985). https://doi.org/10.1007/BF00397802
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DOI: https://doi.org/10.1007/BF00397802