Abstract
Gammarus pulex were sampled from five English streams during April 1992. The population density, number of precopula pairs and incidence of parasitic infection were recorded, and the biomass was estimated from subsamples by relating body area to dry weight. Physical and chemical measurements were taken from each stream. The abundance and standing crop biomass differed significantly between streams, probably due to the influence of pollutants or the physical structure of the stream bed. The size of individual G. pulex also differed significantly between streams, although there was no obvious causal explanation for this. Few individuals were visibly parasitised in any of the populations. Males were significantly larger than females, both in precopula pairs and in the general populations. The sex ratio differed between populations and may explain inter-stream differences in the relationship between precopula male and female size.
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References
Adams, J., J. Gee, P. Greenwood, S. McKelvey & R. Perry, 1987. Factors affecting the microdistribution of Gammarus pulex (Amphipoda): an experimental study. Freshwat. Biol. 17: 307–316.
Ahmad, M. F., 1969. Anaesthetic effects of tricaine methane sulphonate (MS 222 Sandoz) on Gammarus pulex (L.) (Amphipoda). Crustaceana 16: 197–201.
BSI, 1986. Water Quality. Part 6. Sampling. Section 6.3. Guidance on the handling and preservation of samples. BS 6068: Section 6.3. British Standards Institution, London.
BSI, 1989. Water Quality. Part 5. Biological Methods. Section 5.8. Methods of biological sampling: guidance on the design and use of quantitative samplers for benthic macroinvertebrates on stony substrata in shallow waters. BS 6068: Section 5.8. British Standards Institution, London.
Crane, M. & L. Maltby, 1991. The lethal and sublethal responses of Gammarus pulex to stress: sensitivity and sources of variation in an in situ bioassay. Envir. Toxicol Chem. 10: 1331–1339.
Dick, J. T. A. & R. W. Elwood, 1990. Symmetrical assessment of female quality by male Gammarus pulex (Amphipoda) during struggles over precopula females. Anim. Behav. 40: 877–833.
Gee, J. H. R., 1982. Resource utilization by Gammarus pulex (Amphipoda) in a Cotswold stream: a microdistribution study. J. anim. Ecol. 51: 817–832.
Genstat 5 Committee, 1987. Genstat 5 Reference Manual. Oxford Science Publications, Oxford.
Glazier, D. S., M. T. Home & M. E. Lehman, 1992. Abundance, body composition and reproductive output of Gammarus pulex (Crustacea, Amphipoda) in ten cold springs differing in pH and ionic content. Freshwat. Biol. 28: 149–163.
Hobrough, J. E., 1973. The effects of pollution on Gammarus pulex (L.) subsp, pulex (Schellenberg) in the inlet streams of Rostherne Mere, Cheshire. Hydrobiologia 41: 13–35.
Iversen, T. M. & J. Jessen, 1977. Life-cycle, drift and production of Gammarus pulex L. (Amphipoda) in a Danish spring. Freshwat. Biol. 7: 287–296.
Karaman, G. S. & S. Pinkster, 1977. Freshwater Gammarus species from Europe, North Africa and adjacent regions of Asia (Crustacea, Amphipoda). Part I, Gammarus pulex group and related species. Bijdr. Dierk. 47: 1–97.
Kennedy, C. R. & A. Rumpus, 1977. Long-term changes in the size of the Pomphorhynchus laevis (Acanthocephala) population in the River Avon. J. Fish. Biol. 10: 35–42.
Maitland, P. S., 1966. Notes on the biology of Gammarus pulex in the River Endrick. Hydrobiologia 28: 142–152.
Maltby, L. & M. Crane, 1993. Responses of Gammarus pulex (Amphipoda, Crustacea) to metalliferous effluents: identification of toxic components and the importance of interpopulation variation. Envir. Pollut. (in press).
McCahon, C. P. & M. J. Poulton, 1991. Lethal and sublethal effects of acid, aluminium and lime on G. pulex during repeated simulated episodes in a Welsh stream. Freshwat. Biol. 25: 169–178.
McCahon, C. P., M. J. Poulton, P. C. Thomas, Q. Xu, D. Pascoe & C. Turner, 1991. Lethal and sublethal toxicity of field simulated farm waste episodes to several freshwater invertebrate species. Wat. Res. 25: 661–671.
Meijering, M. P. D., 1991. Lack of oxygen and low pH as limiting factors for Gammarus in Hessian brooks and rivers. Hydrobiologia 223 (Dev. Hydrobiol. 70): 159–169.
Minshall, G. W. & J. N. Minshall, 1978. Further evidence on the role of chemical factors in determining the distribution of benthic invertebrates in the River Duddon. Arch. Hydrobiol. 83: 324–355.
Mortensen, E., 1982. Production of Gammarus pulex L. (Amphipoda) in a small Danish stream. Hydrobiologia 87: 77–82.
Schrimpff, E. & F. Foeckler, 1985. Gammarids in streams of northeastern Bavaria, F.R.G. I. Prediction of their general occurrence by selected hydrochemical variables. Arch. Hydrobiol. 103: 479–495.
Smyly, W. J. P., 1957. The life history of the bullhead or miller's thumb (Cottus gobio L.). Proc. Zool. Soc. Lond. 128: 431–453.
Standing Committee of Analysts, 1979. Methods for the examination of waters and associated materials. The instrumental determination of total organic carbon, total oxygen demand and related determinants. Her Majesty's Stationery Office (HMSO), London.
Standing Committee of Analysts, 1980a. Methods for the examination of waters and associated materials. Suspended matter, settleable and total dissolved solids in water and effluents. HSMO, London.
Standing Committee of Analysts, 1980b. Methods for the examination of waters and associated materials. Phosphorus in waters, effluents and solid samples. HMSO, London.
Standing Committee of Analysts, 1981a. Methods for the examination of waters and associated materials. Oxidised nitrogen in waters. HMSO, London.
Standing Committee of Analysts, 1981b. Methods for the examination of waters and associated materials. The determination of alkalinity and acidity in waters. HMSO, London.
Standing Committee of Analysts, 1981c. Methods for the examination of waters and associated materials. Ammonia in waters. HMSO, London.
Sutcliffe, D. W., T. R. Carrick & L. J. Willoughby, 1981. Effects of diet, body size, age and temperature on growth rates in the amphipod Gammarus pulex. Freshwat. Biol. 11: 183–214.
Thompson, D. J. & S. J. Moule, 1983. Substrate selection and assortative mating in Gammarus pulex L. Hydrobiologia 99: 3–6.
Thompson, M. & J. N. Walsh, 1983. A handbook of inductively coupled plasma spectrometry. Blackie, Glasgow.
Veerasingham, M. & M. Crane, 1992. Impact of farm waste on freshwater invertebrate abundance and the feeding rate of Gammarus pulex L. Chemosphere 25: 869–874.
Ward, P. I., 1984. The effects of size on the mating decisions of Gammarus pulex (Crustacea, Amphipoda). Z. Tierpsychol. 64: 174–184.
Ward, P. I., 1986. A comparative field study of the breeding behaviour of a stream and a pond population of Gammarus pulex (Amphipoda). Oikos 46: 29–36.
Welton, J. S., 1979. Life-history and production of the amphipod Gammarus pulex in a Dorset chalk stream. Freshwat. Biol. 9: 263–275.
Welton, J. S., M. Ladle, J. A. B. Bass & I. R. John, 1983. Estimation of the gut throughput time in Gammarus pulex under laboratory and field conditions with a note on the feeding of the young in the brood pouch. Oikos 41: 133–138.
Whitehurst, I. T., 1991. The Gammarus: Asellus ratio as an index of organic pollution. Wat. Res. 25: 333–339.
Willoughby, L. G. & R. Earnshaw, 1982. Gut passage times in Gammarus pulex (Crustacea: Amphipoda) and aspects of summer feeding in a stony stream. Hydrobiologia 97: 105–117.
Willoughby, L. G. & D. W. Sutcliffe, 1976. Experiments on feeding and growth of the amphipod Gammarus pulex (L.) related to its distribution in the River Duddon. Freshwat. Biol. 6: 577–568.
Zar, J. H., 1984. Biostatistical Analysis. Second Edition. Prentice-Hall International Editions, New Jersey.
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Crane, M. Population characteristics of Gammarus pulex (L.) from five English streams. Hydrobiologia 281, 91–100 (1994). https://doi.org/10.1007/BF00006438
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DOI: https://doi.org/10.1007/BF00006438