Abstract
The numerical abundance of peritrich ciliates epizoic on larvae of Brachycentrus subnubilus in an English chalk stream is described for an 18-month period. Peaks in the epizoic population occurred during winter at a time when protozoan populations in other stream habitats were low. Ciliates were absent from the first three instars of their host, but were abundant on fourth and fifth instar larvae. Estimates of generation times in the field were made for the ciliate populations (January – February 186 h; July – August 471 h). The relative importance of the epizoic ciliate population as a whole is considered in relation to other protozoan populations in the streams.
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References
Baker, J. H. & I. S. Farr, 1977. Origins, characterization and dynamics of suspended bacteria in two chalk streams. Arch. Hydrobiol. 80: 308–326.
Baker, W. V., 1961. Some observations on the associations of trichopterous larvae. Ent. mon. Mag. 97: 192.
Baldock, B. M., 1980. The ecology of protozoa in chalk streams, with particular reference to ciliates and amoebae associated with selected macrophytes. Ph.D. Thesis, Univ. Southampton, 248 pp.
Baldock, B. M., J. H. Baker & M. A. Sleigh, 1983. Abundance and productivity of protozoa in chalk streams. Holarct. Ecol. 6: 238–246.
Campbell, P. G. C. & J. H. Baker, 1978. Estimation of bacterial production in freshwaters by the simultaneous measurements of [35S]sulphate and D-[3H]glucose uptake in the dark. Can. J. Microbiol. 24: 939–946.
Casey, H., 1975. Variation in chemical composition of the River Frome, England, from 1965–1970. Freshwat. Biol. 5: 507–514.
Casey, H. & P. V. R. Newton, 1973. The chemical composition and flow of the River Frome and its main tributaries. Freshwat. Biol. 3: 317–333.
Dawson, F. H., 1976. The annual production of the aquatic macrophyte Ranunculus penicillatus var. calcareus (R. W. Butcher) C. D. K. Cook. Aquat. Bot. 2: 51–73.
Fenchel, T., 1965. On the ciliate fauna associated with the marine amphipod Gammarus J. G. Fabricius. Ophelia 2: 281–303.
Finlay, B. J., 1977. The dependence of reproductive rate on cell size and temperature in freshwater ciliated protozoa. Oecologia (Berlin) 30: 75–81.
Gallepp, G., 1974. Diel periodicity in the behaviour of the caddisfly, Brachycentrus americanus (Banks). Freshwat. Biol. 4: 193–204.
Gates, M. A., A. Rogerson & J. Berger, 1982. Dry to wet weight biomass conversion constant for Tetrahymena elliotti (Ciliophora, Protozoa). Oecologia (Berl.) 55: 145–148.
Green, J., 1974. Parasites and epibionts of Cladocera. Trans. zool. Soc. Lond. 32: 417–515.
Gunn, R. J. M., 1985. The biology of Brachycentrus subnubilus Curtis (Trichoptera) in the River Frome, Dorset. Hydrobiologia 120: 133–140.
Henebry, M. S. & B. T. Ridgeway, 1980. Epizoic ciliated protozoa of planktonic copepods and cladocerans and their possible use as indicators of organic water pollution. Trans am. microsc. Soc. 98: 495–508.
Hickin, N. E., 1967. Caddis larvae. Larvae of the British Trichoptera. Hutchinson, Lond. 476 pp.
Hossell, J. C. & J. H. Baker, 1979. Estimation of the growth rates of epiphytic bacteria and Lemna minor L. in a river. Freshwat. Biol. 9: 319–327.
Jilek, R., 1980. Epistylis cambari (Ciliata: Peritrichida) and dragonfly nymphs, an epizoic association. J. N.Y. ent. Soc. 88: 113–114.
Lüpkes, G., 1975. Contribution to the knowledge of the symphoriont fauna on caddis-fly larvae; Haplocalus brehmi n.sp. and Epistylis daxi n. sp. Protistologica 11: 295–296.
Matthes, D. & L. Guhl, 1973. Sessile Ciliaten auf Flusskrebse. Protistologica 9: 459–470.
Matthes, D. & L. Guhl, 1974. Neue operculariforme Epistyliden mit symphorionter Lebenweise. Arch. Protistenk. 116: 366–380.
Mitchell, G. C., 1984. Aspects of the ecology and feeding behaviour of flagellates from two chalk streams. Ph.D. Thesis, Univ. Southampton, 357 pp.
Morgan, C. I., 1976. Studies on the British tardigrade fauna. Some zoogeographical and ecological notes. J. Nat. Hist. 10: 607–632.
Nenninger, U., 1948. Die Peritrichen der Umgebung von Erlangen mit besonderer Berucksichtigung ihrer Wirtsspeziftat. Zool. Jb. Syst. 77: 169–266.
Reynoldson, T. B., 1955. Factors influencing population fluctuations of Urceolaria mitra (Peritricha) epizoic on freshwater triclads. J. anim. Ecol. 24: 57–83.
Siegel, S., 1956. Nonparemetric Statistics for the Behavioral Sciences. Int. Student Edn, Tokoyo, 312 pp.
Sudo, R. & S. Aiba, 1984. Role and function of protozoa in the biological treatment of polluted waters. Adv. Biochem. Engng Biotechnol. 29: 117–141.
Taylor, W. D., 1978. Growth responses of ciliate protozoa to the abundance of their bacterial prey. Microb. Ecol. 4: 207–214.
Taylor, W. D. & J. Berger, 1976. Growth responses of cohabiting ciliate protozoa to various prey bacteria. Can. J. Zool. 54: 1111–1114.
Trager, W., 1957. Excystation of apostome ciliates in relation to moulting of their crustacean hosts. Biol. Bull. 112: 132–136.
Welton, J. S., 1979. Life history and production of the amphipod Gammarus pulex in a Dorset chalk stream. Freshwat. Biol. 9: 263–275.
Wright, J. F., P. D. Hiley & A. D. Berrie, 1981. A 9-year study of the life cycle of Ephemera danica Müll. (Ephemeridae: Ephemeroptera) in the River Lambourn, England. Ecol. Ent. 6: 321–331.
Wright, J. F., P. D. Hiley, A. C. Cameron, M. E. Wigham & A. D. Berrie, 1983. A quantitative study of the macroinvertebrate fauna of five biotopes in the River Lambourn, Berkshire, England. Arch. Hydrobiol. 96: 271–292
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Baldock, B.M. Peritrich ciliates epizoic on larvae of Brachycentrus subnubilus (Trichoptera): importance in relation to the total protozoan population in streams. Hydrobiologia 131, 125–131 (1986). https://doi.org/10.1007/BF00006775
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DOI: https://doi.org/10.1007/BF00006775