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Observations on the Feeding Ecology of Estuarine Nematodes

  • Tom Moens (a1) and Magda Vincx (a1)

Extract

Observations on living estuarine nematodes show that previous feeding type classifications do not accurately represent the trophic structure of an intertidal mudflat in the Westerschelde Estuary (Netherlands). A new scheme with six major nematode feeding guilds is proposed: (1) microvores; (2) ciliate feeders; and (3) deposit feeders sensu stricto are all nematodes without a distinct buccal armature. In the first two groups bacteria and protozoa, respectively are the major particulate food sources, while other items are included in the diet of the third. The three other categories are recognized among the nematodes with a buccal armature: (4) epigrowth feeders; (5) facultative predators; and (6) predators. Diatoms and other microalgae are an important particulate food for many epigrowth feeders. The importance of bacteria as a food source for these nematodes remains poorly documented. A strictly or mainly predatory behaviour has been described for only few species from the study area. Several nematodes, however, are facultative predators. The predatory strategy of Calyptronema maxweberi, as described in this paper, suggests the use of a paralysing or lethal secretion in prey capture, which, to our knowledge, is the first report for aquatic nematodes. Furthermore, the importance of sources other than particulate food in free-living aquatic nematodes is stressed. Our observations show that many aquatic nematodes are in fact opportunistic feeders, which may change feeding strategies in response to available food.

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Alongi, D.M. & Tietjen, J.H., 1980. Population growth and trophic interactions among free-living marine nematodes. In Marine benthic dynamics (ed. K.R., Tenore and B.C., Coull), pp. 151166. Columbia: University South Carolina Press.
Bett, B.J. & Moore, C.G., 1988. The taxonomy and biology of a new species Pontonema (Nematoda, Oncholaimidae) dominant in organically polluted sublittoral sediments around Scotland, with a review of the genus. Journal of Natural History, 22, 13631377.
Bongers, T., Alkemade, R. & Yeates, G.W., 1991. Interpretation of disturbance-induced maturity decrease in marine nematode assemblages by means of the Maturity Index. Marine Ecology Progress Series, 76, 135142.
Boucher, G., 1973. Premières données écologiques sur les nématodes libres marins d'une station de vase cótière de Banyuls. Vie et Milieu. Série B, 23, 69100.
Bouwman, L.A., 1983. Systematics, ecology and feeding biology of estuarine nematodes. BOEDE (Biologisch Onderzoek Ems-Dollard Estuarium). Publicaties en Verslagen 3.
Bouwman, L. A., Romeyn, K., Kremer, D.R. & Es, F.B. Van, 1984. Occurrence and feeding biology of some nematode species in estuarine communities. Cahiers de Biologie Marine, 25, 287303.
Cheng, A.C., Lu, N.C., Briggs, G.M. & Stokstad, E.L.R., 1979. Effect of particulate materials on population growth of the free-living nematode Caenorhabditis briggsae. Proceedings of the Society for Experimental Biology and Medicine, New York, 160, 203207.
Chia, F.S. & Warwick, R.M., 1969. Assimilation of labelled glucose from seawater by marine nematodes. Nature, London, 224, 720721.
Cobb, N.A., 1932. Metoncholaimus pristiurus (ZUR STRASSEN); a nematode suitable for use in laboratory courses in zoology. journal of the Washington Academy of Sciences, 20, 344354.
Decho, A.W., 1990. Microbial exopolymer secretions in ocean environments: their role(s) in food webs and marine processes. Oceanography and Marine Biology. Annual Review. London, 28, 73153.
Decho, A.W. & Lopez, G.R., 1992. Exopolymer microenvironments of microbial flora: multiple and interactive effects on trophic relationships. Limnology and Oceanography, 38, 16331645.
Decho, A.W. & Moriarty, D.J., 1990. Bacterial exopolymer utilization by a harpacticoid copepod: a methodology and results. Limnology and Oceanography, 35, 10391049.
Deutsch, A., 1978. Gut structure and digestive physiology of two marine nematodes, Chromadorina germanica, Biitschli, 1874, and Diplolaimella sp. Biological Bulletin. Marine Biological Laboratory, Woods Hole, 155, 317335.
Ferris, V.R. & Ferris, J.M., 1979. Thread worms (Nematoda). In Pollution ecology of estuarine environments (ed. C.W., Hart and S.L.H., Fuller), pp. 133. New York: Academic Press.
Fitter, R. & Manuel, R., 1986, Collins field guide to freshwater life. London: Collins.
Grewal, P.S. & Wright, D.J., 1992. Migration of Caenorhabditis elegans (Nematoda: Rhabditidae) larvae towards bacteria and the nature of the bacterial stimulus. Fundamental and Applied Nematology, 15, 159166.
Heip, C., Smol, N. & Absillis, V., 1978. Influence of temperature on the reproductive potential of Oncholaimus oxyuris (Nematoda, Oncholaimdae). Marine Biology, 45, 255260.
Heip, C., Vincx, M. & Vranken, G., 1985. The ecology of marine nematodes. Oceanography and Marine Biology. Annual Review. London, 23, 399489.
Heip, C., Vincx, M., Smol, N. & Vranken, G., 1982. The systematics and ecology of free-living nematodes. Helminthological Abstracts Series B, Plant Nematology, 51, 131.
Hellwig-Armonies, M., Armonies, W. & Lorenzen, S., 1991. The diet of Enoplus brevis (Nematoda) in a supralittoral salt marsh of the North Sea. Helgoldnder Meeresuntersuchungen, 45, 357372.
Hopper, B.E. & Meyers, S.P., 1966. Observations on the bionomics of the marine nematode, Metoncholaimus sp. Nature, London, 209, 899900.
Hopper, B.E. & Meyers, S.P., 1967. Population studies on benthic nematodes within a subtropical seagrass community. Marine Biology, 1, 8596.
Jennings, J.B. & Colam, J.B., 1970. Gut struture, digestive physiology and food storage in Pontonema vulgaris (Nematoda: Enoplida). Journal of Zoology, 161, 211221.
Jennings, J.B. & Deutsch, A., 1975. Occurrence and possible adaptive significance of β-glucuronidase and arylamidase (Leucine aminopeptidase) activity in two species of marine nematodes. Comparative Biochemistry and Physiology, 52A, 611614.
Jensen, P., 1981. Species distribution and a microhabitat theory for marine mud dwelling Comesomatidae (Nematoda) in European waters. Cahiers de Biologie Marine, 22, 231241.
Jensen, P., 1982. Diatom-feeding behaviour of the free-living marine nematode Chromadorita tenuis. Nematologica, 28, 7176.
Jensen, P., 1986. Nematode fauna in the sulphide-rich brine seep and adjacent bottoms of the East Flower Garden, NW Gulf of Mexico. IV. Ecological aspects. Marine Biology, 92, 489503.
Jensen, P., 1987a. Feeding ecology of free-living aquatic nematodes. Marine Ecology Progress Series, 35, 187196.
Jensen, P., 1987b. Differences in microhabitat, abundance, biomass and body size between oxybiotic and thiobiotic free-living marine nematodes. Oecologia, 71, 564567.
Jonge, V.N. De & Bouwman, L.A., 1977. A simple density separation technique for quantitative isolation of meiobenthos using the colloidal silica Ludox-TM. Marine Biology, 42, 143148.
Li, J., 1993. The temporal variability of free-living nematodes in a brackish tidal flat of the Westerschelde with emphasis on the use of an ecological model. PhD thesis, State University of Gent, Belgium.
Lopez, G., Riemann, F. & Schrage, M., 1979. Feeding biology of the brackish-water Oncholaimid nematode Adoncholaimus thalassophygas. Marine Biology, 54, 311318.
Lorenzen, S., Prein, M. & Valentin, C., 1987. Mass aggregations of the free-living marine nematode Pontonema vulgare (Oncholaimidae) in organically polluted fjords. Marine Ecology Progress Series, 37, 2734.
Meyers, S.P. & Hopper, B.E., 1966. Attraction of the marine nematode Metoncholaimus sp., to fungal substrates. Bulletin of Marine Science, 16, 142150.
Meyers, S.P. & Hopper, B.E., 1973. Nematological-microbial interrelationships and estuarine biodegradative processes. In Estuarine microbial ecology (ed. L.M., Stevenson and R.R., Colwell), pp. 484489. Columbia: University of South Carolina Press.
Meyers, S.P., Hopper, B.E. & Cefalu, R., 1970. Ecological investigations of the marine nematode Metoncholaimus scissus. Marine Biology, 6, 4347.
Montagna, P.A., 1984. Competition for dissolved glucose between meiobenthos and sediment microbes. Journal of Experimental Marine Biology and Ecology, 76, 177190.
Nehring, S., 1992a. Die Vegetarier unter den freilebenden Nematoden. 1. Die Aufwuchsfresser. Mikrokosmos, 81, 135140.
Nehring, S., 1992b. Die Vegetarier unter den freilebenden Nematoden. 2. Die Depositfresser. Mikrokosmos, 81, 260266.
Nuß, B., 1985. Ultrastrukturuntersuchungen zur Nahrungsabsorption von Aquatischen Nematoden. Veröffentlichungen des Institut für Meeresforschungen in Bremerhaven, 21, 169.
Perkins, E.J., 1958. The food relationships of the microbenthos with particular reference to that found at Whitstable, Kent. Annals and Magazine of Natural History, 13, 6477.
Platt, H.M. & Warwick, R.M., 1983. Free-living marine nematodes. Part I. British enoplids. Cambridge University Press.
Prein, M., 1988. Evidence for a scavenging lifestyle in the free-living Nematode Pontonema vulgare (Enoplida, Oncholaimidae). Kieler Meeresforschungen, 6, 389394.
Rasmussen, E., 1973. Systematics and ecology of the Isefjord marine fauna (Denmark) with a survey of the ecology of the eelgrass (Zostera) vegetation and its communities. Ophelia, 11, 1495.
Riemann, F., 1986. Berichte der Abteilungen: Nematodenkunde. Veröffentlichungen des Institut Meeresforschungen in Bremerhaven, 21, 195201.
Riemann, F., Ernst, W. & Ernst, R., 1990. Acetate uptake from ambient water by the free-living marine nematode Adoncholaimus thalassophygas. Marine Biology, 104, 453457.
Riemann, F. & Schrage, M., 1978. The mucus-trap hypothesis on feeding of aquatic nematodes and implications for biodegradation and sediment texture. Oecologia, 34, 7588.
Riemann, F. & Schrage, M., 1988. Carbon dioxide as an attractant for the free-living marine nematode Adoncholaimus thalassophygas. Marine Biology, 98, 8185.
Romeyn, K. & Bouwman, L.A., 1983. Food selection and consumption by estuarine nematodes. Hydrobiological Bulletin, 17, 103109.
Romeyn, K., Bouwman, L.A. & Admiraal, W., 1983. Ecology and cultivation of the herbivorous brackish-water nematode Eudiplogaster paramatus. Marine Ecology Progress Series, 12, 145153.
Sikora, J.P., Sikora, W.B., Erkenbrecher, C. W. & Coull, B.C., 1977. Significance of ATP, carbon and caloric content of meiobentic nematodes in partitioning benthic biomass. Marine Biology, 44, 714.
Smol, N., Huys, R. & Vincx, M. 1991. A 4-years’ analysis of the meiofauna community of a dumping site for TiO2-waste off the Dutch coast. Chemistry and Ecology, 5, 197215.
Surey-Gent, S.C., 1981. Distribution of Anoplostoma vivipanim (Nematoda) in Southampton Water sediments. Marine Biology, 62, 157160.
Thistle, D., Lambshead, P.J.D. & Sherman, K.M., 1995. Nematode tail-shape groups respond to environmental differences in the deep-sea. Vie et Milieu, 45, 107115.
Tietjen, J.H. & Lee, J.J., 1973. Life-history and feeding habits of the marine nematode Chromadora macrolaimoides Steiner. Oecologia, 12, 303314.
Tietjen, J.H. & Lee, J.J., 1975. Axenic culture and uptake of dissolved organic substances by the marine nematode, Rhabditis marina Bastian. Cahiers de Biologie Marine, 16, 685693.
Tietjen, J.H., Lee, J.J., Rullman, J., Greengart, A. & Trompeter, J., 1970. Gnotobiotic culture and physiological ecology of the marine nematode Rhabditis marina Bastian. Limnology and Oceanography, 15, 535543.
Trotter, D.B. & Webster, J.M., 1984. Feeding preferences and seasonality of free-living marine nematodes inhabiting the kelp Macrocystis integrifolia. Marine Ecology Progress Series, 14, 151—157.
Vincx, M., 1989. Free-living marine nematodes from the southern bight of the North Sea. Academiae Analecta, Klasse Wetenschappen, 51, 3970.
Vincx, M. et al., 1994. Meiobenthos of the deep northeast Atlantic. Advances in Marine Biology, 30, 188.
Von Thun, W., 1968. Antokolgische Untersuchungen anfreilebenden Nematoden des Brackwassers. PhD thesis, Universität Kiel.
Vranken, G. & Heip, C., 1985. Aspects of the life-cycle of free-living marine nematodes. In Progress in Belgian oceanographic research (ed. R., Van Grieken and R., Wollast), pp. 267278.: University of Antwerp.
Wieser, W., 1953. Die Beziehung zwischen Mundhöhlengestalt, Ernährungsweise und Vorkommen bei freilebenden marinen Nematoden. Eine skologisen-morphologische studie. Arkiv für Zoologie, 4, 439484.
Wieser, W., 1960. Benthic studies in Buzzards Bay. II. The meiofauna. Limnology and Oceanography, 5, 121137.
Yeates, G.W., 1970. Studies on laboratory cultures of dune sand nematodes. journal of Natural History, 4, 119136.
Yeates, G.W., 1987. Nematode feeding and activity: the importance of development stages. Biology and Fertility of Soils, 3, 143146.
Yeates, G.W., Bongers, T., De Goede, R.G.M., Freckman, D.W. & Georgieva, S.S., 1993. Feeding habits in soil nematode families and genera: an outline for soil ecologists. Journal of Nematology, 25, 315331.

Observations on the Feeding Ecology of Estuarine Nematodes

  • Tom Moens (a1) and Magda Vincx (a1)

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