Abstract
Nitrogen regeneration by two surf zone mysids,Mesopodopsis slabberi andGastrosaccus psammodytes, was determined under laboratory conditions. The mysids were collected from the lower Sundays River estuary, South Africa, from early spring 1984 to late summer 1985. The forms of nitrogen excreted and the effects of mass, temperature and feeding on excretion rate were determined for each species at three experimental temperatures. Comparison of the forms of nitrogen excreted revealed only slight differences between species, with ammonia the major form and urea and amino acids the secondary excretory products in both cases. Mass significantly influenced the rate of ammonia excretion at all experimental temperatures, with no significant difference in slope (common b=0.602) detected between species. During the day sediment deprivation resulted in a 15% and 20% increase in mean ammonia excretion rates of juvenile and adultG. psammodytes respectively, whereas no significant differences were found at night. The mean ammonia excretion rates of fedM. slabberi andG. psammodytes were 2 and 2.5 times higher than ‘starved’ excretion rates, respectively.G. psammodytes andM. slabberi recycle 139 to 150 g N per running meter of surf zone per year and 1 007 to 1 208 g N m-1 yr-1, respectively. Togehter this constitutes 10% of total phytoplankton nitrogen requirements in the surf zone.
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Literature cited
Bidigare, R. R. (1983). Nitrogen excretion by marine zooplankton. In: Nitrogen in the marine environment. Carpenter E. J., and Capone, D. G. (eds.) Academic Press, New York, p. 385–409
Campbell, E. E. (1986). The influence of abiotic variable on the photosynthetic rate ofAnaulus birostratus (Grunow) from the Sundays River beach surf zone. M. Sc. thesis, Botany Department, University of Port Elizabeth, Port Elizabeth, South Africa
Cockcroft, A. C., McLachlan, A. (1987). Nitrogen regeneration by the surf zone penaeid prawnMacropetasma africanus (Balss). Mar. Biol. 96: 343–348
Corner, E. D. S., Newell, B. S. (1967). On the nutrition and metabolism of zooplankton. IV. The forms of nitrogen excreted byCalanus. J. mar. biol. Ass. U.K. 47: 113–120
Corner, E. D. S., Head, R. N., Kilvington, C. C., Pennycuick, L. (1976). On the nutrition and metabolism of zooplankton. X. Quantitative aspects ofCalanus helgolandicus feeding as a carnivore. J. mar. biol. Ass. U. K. 56: 345–358
Dagg, M. J. (1976). Complete carbon and nitrogen budgets for the carnivorous amphipod,Calliopius laeviusculus (Kroyer). Int. Rev. gesamten Hydrobiol. 61: 297–357
Dagg, M. J., Vidal, M., Whitledge, T. E., Iverson, R. L., Goering, J. J. (1982). The feeding, respiration and excretion of zooplankton in the Bering Sea during a spring bloom. Deep-Sea Res. 29A: 45–63
Gardner, W. S., Scavia, D.. (1984). Kinetic examination of nitrogen release by zooplankters. Limnol. Oceanogr. 23: 801–810
Gardner, W. S., Paffenhofer, G. A. (1982). Nitrogen regeneration by the subtropical marine copepodEucalanus pileatus. J. Plankton Res. 4: 725–734
Harris, E. (1959). The nitrogen cycle in Long Island Sound. Bull. Bingham. oceanogr. Collect. 17: 31–65
Ikeda, T., Hing Fay, E. (1981). Metabolic activity of zooplankton from the Antarctic Ocean. Aust. J. Mar. Freshwater Res. 32: 921–930
Ikeda, T., Motoda, S. (1978). Estimated zooplankton production and their ammonia excretion in the Kuroshio and adjacent seas. Fish. Bull. U.S. 76: 357–367
Ikeda, T., Carleton, J. H., Mitchell, A. W., Dixon, P. (1982a). Ammonia and phosphate excretion by zooplankton from the inshore waters of the Great Barrier Reef. II. Theirin situ contributions to nutrient regeneration. Aust. J. Mar. Freshwater Res. 33: 683–698
Ikeda, T., Hing Fay, E., Hutchinson, S. A., Boto, G. M. (1982b). Ammonia and phosphate excretion by zooplankton from the inshore waters of the Great Barrier Reef, Queensland. I. Relationship between excretion rates and body size. Aust. J. Mar. Freshwater Res. 33: 55–70
Jawed, M. (1969). Body nitrogen and nitrogen excretion inNeomysis rayii Murdoch andEuphausia pacifica Hansen. Limnol. Oceanogr. 14: 748–754
Jawed, M. (1973). Ammonia excretion by zooplankton and its significance to primary productivity during summer. Mar. Biol. 23: 115–120
Lasiak, T. S. (1982). Structural and functional aspects of the surf zone fish community in the Eastern Cape. Ph. D. thesis, Zoology Department, University of Port Elizabeth, Port Elizabeth, South Africa
Lehman, J. T. (1980). Release and cycling of nutrients between planktonic algae and herbivores. Limnol. Oceanogr. 25: 620–632
Lewin, J., Eckman, J. E., Ware, J. W. (1979). Blooms of surf zone diatoms along the coast of the Olympic Peninsula, Washington. XI. Regeneration of ammonia in the surf environment by the Pacific Razor clam,Siliqua patula. Mar. Biol. 52: 1–9
Lund, J. W. G., Kipling, C., LeCren, E. D. (1958). The inverted microscope method of estimating algal numbers and the statistical basis of estimations by counting. Hydrobiologia 11: 143–170
Madeira, P. T., Brooks, A. S., Seale, D. B. (1982). Excretion of total phosphorus, dissolved reactive phosphorus, ammonia, and urea by Lake MichiganMysis relicta Hydrobiologia 93: 145–154
Mangum, C. P., Silverthorn, S. U., Harris, J. L., Towle, D. W., Knull, A. R. (1976). The relationship between blood pH, ammonia excretion and adaptation to low salinity in the blue crabCallinectes sapidus. J exp. Zool. 195: 129–136
McCarthy, J. (1970). A urease method for urea in seawater. Limnol. Oceanogr. 15: 309
McLachlan, A. (1980). Exposed sandy beaches as semi-closed ecosystems. Mar. Environ. Res. 4: 59–63
McLachlan, A. (1982). A model for the estimation of water filtration and nutrient regeneration by exposed sandy beaches. Mar. Environ. Res. 6: 37–47
McLachlan, A., Bate, G. (1984). Carbon budget for a high energy surf zone. Vie Milieu 34: 67–77
McLachlan, A., Illenberger, W. (1986). Significance of groundwater nitrogen input to a beach/surf zone ecosystem. Stygologia 2: 291–296
McLachlan, A., Wooldridge, T., van der Horst, G. (1979). Tidal movements of the macrofauna on an exposed sandy beach in South Africa. J. Zool. Lond. 188: 433–442
Moore, J., Stein, W. H. (1954). A modified ninhydrin reagent for the determination of amino acids and related compounds. J. biol. Chem. 211: 907–913
Mostert, S. A. (1983). Procedures used in South Africa for the automatic photometric determination of micronutrients in seawater. S. Afr. J. mar. Sci. 1: 189–198
Needham, A. E. (1957). Factors affecting nitrogen inCarcinus maenas (Pennant). Physiol. Comp. Oecol. 4: 209–239
Nelson, S. G., Knight, A. W., Li, H. W. (1977). The metabollic cost of food utilization and ammonia production by juvenileMacrobrachium rosenbergii (Crustacea: Palaemonidae). Comp. Biochem. Physiol. 57A: 67–72
Nelson, S. G., Simmons, M. A., Knight, A. W. (1979). Ammonia excretion by the benthic estuarine shrimpCrangon franciscorum (Crustacea: Crangonidae) in relation to diet. Mar. Biol. 54: 25–31
Prosch, R. M., McLachlan, A. (1984). The regeneration of surf zone nutrients by the sand mussel,Donax serra Rodring. J. exp. mar. Biol. Ecol. 80: 221–233
Regnault, M. (1986). Production d'NH4+ pas la crevetteCrangon crangon L. dans deux ecosystemes cotiers. Approche experimentale et etude de l'influence du sediment sur le taux d'excretion. J. exp. mar. Biol. Ecol. 100: 113–126
Romer, G. S. (1986). Faunal assemblages and food chains associated with surf zone phytoplankton blooms. M. Sc. thesis, Zoology Department, University of Port Elizabeth, Port Elizabeth, South Africa
Rossouw, G. J. (1983). The importance of non-teleost fishes (Elasmobranchs) in the surf zone with special reference toRhinobatus annulatus. In: McLachlan, A., Erasmus, T. (eds.) Sandy beaches as Ecosystems. Junk publishers, The Hague, p. 749
Seale, D. B., Borass, M. E. (1982). Influence of experimental conditions on nitrogenous excretion by Lake MichiganMysis relicta (Loven): laboratory studies with animals acclimated in Fragilaria. Hydrobiologia 93: 163–169
Smith, S. L., Whitledge, T. W. (1977). The role of zooplankton in the regeneration of nitrogen in a coastal upwelling system of northwest Africa. Deep-Sea Res. 24: 49–56
Snow, N. B., Williams, P. (1971). A simple method to determine the O/N ratio of small marine animals. J. mar. biol. Ass. U.K. 51: 105–109
Solorzano, L., Sharp, J. H. (1980). Determination of total dissolved nitrogen in natural waters. Limnol. Oceanogr. 25: 751–754
Strickland, J. D., Parsons, T. R. (1972). A practical handbook of seawater analysis. 2nd ed. Bull. Fish. Res. Bd. Can. 167: 310
Takahashi, M., Ikeda, T. (1975). Excretion of ammonia and inorganic phosphorus byEuphausia pacifica andMetridia pacifica at different concentrations of phytoplankton. Fish. Res. Bd. Can. 32: 2189–2195
Talbot, M. M. B. (1986). The distribution of the surf diatomAnaulus birostratus in relation to the nearshore circulation in an exposed beach/surfzone ecosystem. Ph. D. thesis, Botany Department, University of Port Elizabeth, Port Elizabeth, South Africa
Vanderploeg, H. A., Laird, G. A., Liebig, J. R., Gardner, W. S. (1986). Ammonium release by zooplankton in suspensions of heat-killed algae and an evaluation of the flow cell method. J. Plankton Res. 8: 341–352
Vargo, G. A. (1979). The contribution of ammonia excreted by zooplankton to phytoplankton in Narragansett Bay. J. Plankton Res. 1: 75–84
Webb, P. (1986). The diet and feeding of two shallow water marine mysid shrimps in Algoa Bay, South Africa, M. Sc. thesis, Zoology Department, University of Port Elizabeth, Port Elizabeth, South Africa
Welsh, B. L. (1975). The role of gras shrimpPalaemonetes pugio, in a tidal marsh ecosystem. Ecology 56: 513–530
Whitledge, T. E., Packard, T. T. (1971). Nutrient excretion by anchovies and zooplankton in Pacific upwelling regions. Invest. Pesq. 35: 243–250
Wooldridge, T. H. (1981). Zonation and distribution of the beach mysid,Gastrosaccus psammodytes (Crustacea: Mysidacea). J. Zool. Lond. 193: 183–189
Wooldridge, T. H. (1983). Ecology of beach and surf zone mysid shrimps in the Eastern Cape, South Africa. In: McLachlan, A., Erasmus, T. (eds.). Sandy Beaches as Ecosystems. Junk publishers. The Hague, p. 449–460
Wooldridge, T., Bailey, C. (1982). Euryhaline zooplankton of the Sundays estuary and notes on trophic relationships. S. Afr. J. Zool. 17: 151–163
Wooldridge, T., Erasmus, T. (1980). Utilization of tidal currents by estuarine zooplankton. Estuar. cstl. mar. Sci. 11: 107–114
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Communicated by O. Kinne, Oldendorf/Luhe
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Cockcroft, A.C., Webb, P. & Wooldridge, T. Nitrogen regeneration by two surf-zone mysids,Mesopodopsis slabberi andGastrosaccus psammodytes . Mar. Biol. 99, 75–82 (1988). https://doi.org/10.1007/BF00644979
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DOI: https://doi.org/10.1007/BF00644979