Marine Biology

, Volume 112, Issue 1, pp 57–65 | Cite as

Environmental regulation of feeding and egg production by Acartia tonsa off southern California

  • G. S. Kleppel


The feeding, diet and egg production of the copepod Acartia tonsa were dermined during ten experiments in Los Angeles Harbor, California, between November 1986 and October 1987. Copepods were incubated in situ, in quasi-natural food environments. Water temperatures ranged from 14.6 to 21.5°C. Particulate organic carbon and nitrogen (POC and PON) were high (534 to 3710 μg Cl-1, 51 to 459 Nl-1) but dominated by small (<8 μm diam) particles. Plankton (phytoplankton and microzooplankton) C-biomass composed about 10% of the total POC and was usually dominated by particles >8 μm. Plankton biomass was always low. Daily ingestion rates ranged from 3 to 96% of body C; egg production ranged from 4 to 35% of body carbon. Mean ingestion and egg production rates during spring-summer were 1.9 and 1.5 times higher than average for the entire study, respectively. The average gross efficiency of egg production for the study was 80%; the spring-summer mean was 41%. Bivariate and multiple-regression analyses revealed that the ingestion rate was dependent upon both temperature and food availability, but that, below 21°C, egg production depended more upon temperature than upon food concentration. To detect dietary preferences, the composition of diet was compared with that of the food supply. Selective feeding was infrequent, but the diet was often dominated by dinoflagellates and ciliates. It would appear that within metabolic limits governed by temperature, the feeding response of A. tonsa is dependent upon food concentration, while egg production depends more on qualitative attributes of the food supply.


Biomass Phytoplankton Food Concentration Ingestion Rate Food Supply 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Literature cited

  1. Alcaraz, M., Paffenhöfer, G.-A., Strickler, J. R. (1980). Catching the algae: a first account of visual observations on filter-feeding calanoids. In: Kerfoot, W.C. (ed.) Evolution and ecology in zooplankton communities. University Press of New England. Hanover, New Hampshire, p. 241–248Google Scholar
  2. Ambler, J. W. (1985). Seasonal factors affecting egg production and viability of eggs of Acartia tonsa Dana, from East Lagoon, Galveston, Texas. Estuar., cstl Shelf Sci. 20: 743–760Google Scholar
  3. Ambler, J. W. (1986). Effect of food quantity and quality on egg production of Acartia tonsa Dana from East Lagoon, Galveston, Texas. Estuar., cstl Shelf Sci. 23: 183–196Google Scholar
  4. Bartram, W. C. (1980). Experimental development of a model for the feeding of neritic copepods on phytoplankton. J. Plankton Res. 3: 25–51Google Scholar
  5. Beers, J. R., Stewart, G. L. (1970). Part IV. Numerical abundance and estimated biomass of microzooplankton. In: Strickland, J. D. H. (ed.) The ecology of the plankton off La Jolla, California, in the period April through September, 1967. University of California, Berkley, p. 67–87Google Scholar
  6. Bellantoni, D. C., Peterson, W. T. (1987). Temporal variabillity in egg production rates of Acartia tonsa Dana in Long Island Sound. J. exp. mar. Biol. Ecol. 107: 100–208Google Scholar
  7. Checkley, D. M. (1980). Food limitation of egg production by a marine planktonic copepod in the sea off southern California. Limnol. Oceanogr. 25: 991–998Google Scholar
  8. Chervin, M. B. (1978). Assimilation of particulate organic carbon by estuarine and coastal copepods. Mar. Biol. 49: 265–275Google Scholar
  9. Cowles, T. J. (1979). The feeding response of copepods from the Peru upwelling system: food size selection. J mar. Res. 13: 601–622Google Scholar
  10. Cowles, T. J., Olson, R. J., Chisholm, S. W. (1988). Food selection by copepods: discrimination on the basis of food quality. Mar. Biol. 100: 41–49Google Scholar
  11. Dagg, M. (1977). Some effects of patchy food environments on copepods. Limnol. Oceanogr. 22: 99–107Google Scholar
  12. Donaghay, P. L., Small, L. F. (1979). Food selection capabilities of the estuarine copepod Acartia clausi. Mar. Biol. 52: 137–146Google Scholar
  13. Downs, J. N., Lorenzen, C. J. (1985). Carbon:pheopigment ratios of zooplankton fecal pellets as an index of herbivorous feeding. Limnol. Oceanogr. 30: 1024–1036Google Scholar
  14. Durbin, E. G., Durbin, A. G., Smayda, T. J., Verity, P. G. (1983). Food limitation of production by adult Acartia tonsa in Narraganset Bay, Rhode Island. Limnol. Oceanogr. 28: 1199–1213Google Scholar
  15. Frost, B. W. (1972). Effect of size and concentration of food on the feeding behavior of the marine planktonic copepod Calanus pacificus. Limnol. Oceanogr. 17: 805–815Google Scholar
  16. Gifford, D. J. (1991). The protozoan-metazoan trophic link in pelagic ecosystems. J. Protozool. 38: 81–86Google Scholar
  17. Gifford, D. J., Dagg, M. J. (1988). Feeding of the estuarine copepod Acartia tonsa. Dana: carnivory vs. herbivory in natural microplankton assemblages. Bull. mar. Sci. 43: 458–468Google Scholar
  18. Gifford, D. J., Dagg, M. J. (1990). The protozoan-metazoan trophic link in the subarctic North Pacific Ocean: planktonic Protozoa in the diets of copepods and salps. EOS Trans. Am. geophys. Un. 71: 179–180Google Scholar
  19. Head, E. J. H., Harris, L. R., Abou Debs, C. (1985). Effects of daylength and food concentration of the in situ diurnal feeding rhythms of Arctic copepods. Mar. Ecol. Prog. Ser. 24: 281–288Google Scholar
  20. Heinle, D. R., Flemer, D. A. (1975). Carbon requirements of a population of the estuarine copepod Eurytemora affinis. Mar. Biol. 31: 235–247Google Scholar
  21. Hitchcock, G. L. (1982). A comparative study of the size-dependent organic composition of marine diatoms and dinoflagellates. J. Plankton Res. 4: 363–377Google Scholar
  22. Huntley, M. E., Sykes, P., Rohan, S., Marin, V. (1986). Chemically mediated rejection of dinoflagellate prey by the copepods Calanus pacificus and Paracalanus parvus: Mechanism, occurrence and significance. Mar. Ecol. Prog. Ser. 28: 105–120Google Scholar
  23. Kiørboe, T., Møhlenberg, F., Hamburger, K. (1985). Bioenergetics of the planktonic copepod Acartia tonsa: relation between feeding, egg production and respiration and composition of specific dynamic action. Mar. Ecol. Prog. Ser. 40: 1–10Google Scholar
  24. Kleppel, G. S., Frazel, D. W., Pieper, R. E., Holliday, D. V. (1988a). Natural diets of zooplankton off southern California. Mar. Ecol. Prog. Ser. 49: 231–241Google Scholar
  25. Kleppel, G. S., Holliday, D. V., Pieper, R. E. (1991). Trophic interactions between copepods and microplankton: a question about the role of diatoms. Limnol. Oceanogr. 36: 172–178Google Scholar
  26. Kleppel, G. S., Pieper, R. E. (1984). Phytoplankton pigments in the gut contents of planktonic copepods from coastal waters off southern California. Mar. Biol. 78: 193–198Google Scholar
  27. Kleppel, G. S., Pieper, R. E., Trager, G. (1988b). Variability in the gut contents of individual Acartia tonsa from waters off southern California. Mar. Biol. 97: 185–190Google Scholar
  28. Krinsky, N. I. (1971). Function. In: Isler, O. (ed.) Carotenoids. Birkhauser, Basel, p. 669–716Google Scholar
  29. Lessard, E. J., Swift, E. (1985). Species-specific grazing rates of heterotrophic dinoflagellates in oceanic waters measured with a dual-label radioisotope technique. Mar. Biol. 87: 289–296Google Scholar
  30. McLaren, I. A. (1986) Is structural growth of Calanus potentially exponential? Limnol. Oceanogr. 31: 1342–1346Google Scholar
  31. Miller, C. B., Johnson, J. K., Heinle, D. R. (1977). Growth rules in the marine copepod genus Acartia. Limnol. Oceanogr. 22: 326–334Google Scholar
  32. Morey-Gaines, G. (1980). The ecological role of dinoflagellate blooms in the Los Angeles-Long Beach Harbor. Ph. D. thesis. University of Southern California, Los AngelesGoogle Scholar
  33. Nival, P., Nival, S. (1976). Particle retention efficiencies of the herbivorous copepod Acartia clausi (adult and copepodite stages): effects on grazing. Limnol. Oceanogr. 21: 24–38Google Scholar
  34. Paffenhöfer, G.-A. (1984). Food ingestion by the marine planktonic copepod Paracalanus in relation to abundance and size distribution of food. Mar. Biol. 80: 323–333Google Scholar
  35. Peterson, W. T. (1988). Rates of egg production by the copepod Calanus marshallae in the laboratory and in the sea off Oregon, USA. Mar. Ecol. Prog. Ser. 47: 229–237Google Scholar
  36. Poulet, S. A., Marsot, P. (1978). Chemosensory grazing by marine calanoid copepods (Arthropoda: Crustacea). Science, N.Y. 200: 1403–1405Google Scholar
  37. Poulet, S. A., Ouellet, G. (1982). The role of amino acids in the chemosensory swarming and feeding of copepods. J. Plankton Res. 4: 341–361Google Scholar
  38. Price, H. J., Paffenhöfer, G.-A. (1986). Capture of small cells by the copepod Eucalanus elongatus. Limnol. Oceanogr. 31: 189–194Google Scholar
  39. Pyke, G. H. (1984). Optimal foraging theory: a critical review. A. Rev. Ecol. Syst. 15: 523–575Google Scholar
  40. Reeve, M. R., Walter, M. A. (1977). Observations on the existence of lower threshold and upper critical food concentrations for the copepod Acartia tonsa Dana. J. exp. mar. Biol. Ecol. 29: 211–221Google Scholar
  41. Roman, M. R. (1977). Feeding of the copepod Acartia tonsa on the diatom Nitzschia closterium and brown algae (Fucus vesiculosus) detritus. Mar. Biol. 42: 149–155Google Scholar
  42. Roman, M. R. (1984). Utilization of detritus by the copepod Acartia tonsa. Limnol. Oceanogr. 29: 949–959Google Scholar
  43. Rothschild, B. J. (1988). Biodynamics of the sea: the ecology of high dimensionality systems. In: Rothschild, B. J. (ed.) Toward a theory of biological — physical interactions in the world ocean. Kluwer, Boston, p. 527–548Google Scholar
  44. Runge, J. A. (1984). Egg production of the marine planktonic copepod, Calanus pacificus Brodsky: laboratory observations. J. exp. mar. Biol. Ecol. 74: 53–66Google Scholar
  45. Runge, J. A. (1985). Relationship of egg production of Calanus pacificus to seasonal changes in phytoplankton availability in Puget Sound, Washington. Limnol. Oceanogr. 30: 382–396Google Scholar
  46. Sherr, E. B., Sherr, B. F., Pfaffenhöfer, G.-A. (1987). Phagotrophic protozoa as food for metazoans: a missing trophic link in marine pelagic food webs? Mar. microb. Fd Webs 1: 61–80Google Scholar
  47. Smith, S. L., Lane, P. V. Z. (1985). Laboratory studies of the marine copepod Centropages typicus: egg production and development rates. Mar. Biol. 85: 153–162Google Scholar
  48. Soule, D. F., Oguri, M. (1980). The marine environment in Los Angeles and Long Beach Harbors during 1978. Marine studies of San Pedro Bay, California. Part 17. Allan Hancock Foundation and University of Southern California Office of Sea Grant, Los AngelesGoogle Scholar
  49. Stearns, D. E. (1986). Copepod grazing behavior in simulated natural light and its relation to nocturnal feeding. Mar. Ecol. Prog. Ser. 30: 65–76Google Scholar
  50. Stearns, D. E., Tester, P. A., Walker, R. L. (1989). Diel changes in the egg production rate of the copepod Acartia tonsa (Copepoda, Calanoida) and related environmental factors in two estuaries. Mar. Ecol. Prog. Ser. 52: 7–16Google Scholar
  51. Stoecker, D. K., Capuzzo, J. M. (1990). Predation on Protozoa: its importance to zooplankton. J. Plankton Res. 12: 891–908Google Scholar
  52. Stoecker, D. K., Egloff, D. A. (1987). Predation by Acartia tonsa Dana on planktonic ciliates and rotifers. J. exp. mar. Biol. Ecol. 110: 53–68Google Scholar
  53. Stoecker, D. K., Michaels, A. E., Davis, L. H. (1988). Large proportion of marine ciliates found to contain functional chloroplasts. Nature, Lond. 326: 790–792Google Scholar
  54. Stoecker, D. K., Sanders, N K. (1985). Differential grazing by Acartia tonsa on a dinoflagellate and a tintinnid. J. Plankton. Res. 7: 85–100Google Scholar
  55. Strathmann, R. R. (1967). Estimating the organic carbon content of phytoplankton from cell volume or plasma volume. Limnol. Oceanogr. 12: 411–418Google Scholar
  56. Uye, S.-I. (1981). Fecundity studies of the neritic calanoid copepods Acartia clausi Giesbrecht and A. steueri Smirnov: a simple empirical model of daily egg production. J. exp. mar. Biol. Ecol. 50: 255–271Google Scholar
  57. Verity, P. G., Langdon, C. (1984). Relationships between lorica volume, carbon, nitrogen and ATP content of tintinnids in Narragansett Bay. J. Plankton Res. 6: 859–868Google Scholar

Copyright information

© Springer-Verlag 1992

Authors and Affiliations

  • G. S. Kleppel
    • 1
  1. 1.Nova University Oceanographic CenterDaniaUSA

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